Income Tax Disclosure [Abstract] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Income Tax Disclosure [Abstract] | |
Components of Income Before Income Taxes |
For financial reporting purposes, income before income taxes
includes the following components (in thousands):
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Years Ended
December 31, |
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2016 |
|
|
2015 |
|
|
2014 |
|
United States
|
|
$ |
134,740 |
|
|
$ |
52,563 |
|
|
$ |
47,963 |
|
Foreign
|
|
|
50,841 |
|
|
|
60,810 |
|
|
|
50,806 |
|
|
|
|
|
|
|
|
|
|
|
|
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Total
|
|
$ |
185,581 |
|
|
$ |
113,373 |
|
|
$ |
98,769 |
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Income Tax Expense (Benefit) |
The expense (benefit) for income taxes consists of the following
(in thousands):
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Years Ended
December 31, |
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2016 |
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2015 |
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|
2014 |
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Federal
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|
|
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|
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|
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|
Current
|
|
$ |
14,108 |
|
|
$ |
(6,889 |
) |
|
$ |
7,895 |
|
Deferred
|
|
|
19,034 |
|
|
|
18,024 |
|
|
|
7,021 |
|
|
|
|
|
|
|
|
|
|
|
|
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Total
|
|
|
33,142 |
|
|
|
11,135 |
|
|
|
14,916 |
|
State
|
|
|
|
|
|
|
|
|
|
|
|
|
Current
|
|
|
12,565 |
|
|
|
379 |
|
|
|
1,542 |
|
Deferred
|
|
|
(2,502 |
) |
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|
(4,096 |
) |
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|
(2,397 |
) |
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|
|
|
|
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|
|
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Total
|
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|
10,063 |
|
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|
(3,717 |
) |
|
|
(855 |
) |
Foreign
|
|
|
|
|
|
|
|
|
|
|
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Current
|
|
|
11,671 |
|
|
|
15,117 |
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|
|
13,335 |
|
Deferred
|
|
|
1,170 |
|
|
|
5,402 |
|
|
|
3,813 |
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|
|
|
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|
|
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Total
|
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|
12,841 |
|
|
|
20,519 |
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|
|
17,148 |
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|
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Total
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|
$ |
56,046 |
|
|
$ |
27,937 |
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|
$ |
31,209 |
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|
Summary of Differences Between Income Tax Expense Computed at Statutory Federal Income Tax Rate and Per Consolidated Statements of Income |
Differences between the income tax expense computed at the
statutory federal income tax rate and per the consolidated
statements of income are summarized as follows (in thousands):
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Years Ended
December 31, |
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2016 |
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|
2015 |
|
|
2014 |
|
Tax expense at federal rate of 35%
|
|
$ |
64,953 |
|
|
$ |
39,680 |
|
|
$ |
34,569 |
|
State income taxes, net of federal benefit
|
|
|
7,060 |
|
|
|
(2,462 |
) |
|
|
(544 |
) |
Change in valuation allowance
|
|
|
(8,524 |
) |
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|
(9,066 |
) |
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|
3,521 |
|
Foreign tax rate differential
|
|
|
(11,830 |
) |
|
|
(5,710 |
) |
|
|
(5,508 |
) |
Unrecognized tax benefit increase
|
|
|
1,045 |
|
|
|
2,977 |
|
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|
65 |
|
Tax effect of foreign operations
|
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|
5,988 |
|
|
|
261 |
|
|
|
(104 |
) |
Acquisition costs
|
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|
28 |
|
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|
— |
|
|
|
289 |
|
Tax benefit of research & development
|
|
|
(1,088 |
) |
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|
(871 |
) |
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|
(3,446 |
) |
Other
|
|
|
(1,586 |
) |
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|
3,128 |
|
|
|
2,367 |
|
|
|
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|
Income tax provision
|
|
$ |
56,046 |
|
|
$ |
27,937 |
|
|
$ |
31,209 |
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|
|
|
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|
|
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Deferred Tax Assets and Liabilities Result from Differences in Timing of Recognition of Certain Income and Expense Items for Tax and Financial Accounting Purposes |
The deferred tax assets and liabilities result from differences in
the timing of the recognition of certain income and expense items
for tax and financial accounting purposes. The sources of these
differences at each balance sheet date are as follows (in
thousands):
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December 31, |
|
|
|
2016 |
|
|
2015 |
|
Deferred income tax assets:
|
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|
|
|
|
|
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|
Net operating loss carryforwards
|
|
$ |
65,351 |
|
|
$ |
112,193 |
|
Tax credits
|
|
|
25,173 |
|
|
|
40,614 |
|
Compensation
|
|
|
39,340 |
|
|
|
25,752 |
|
Deferred revenue
|
|
|
27,303 |
|
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|
25,287 |
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Other
|
|
|
6,279 |
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|
8,346 |
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Gross deferred income tax assets
|
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|
163,446 |
|
|
|
212,192 |
|
Less: valuation allowance
|
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|
(9,659 |
) |
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|
(18,742 |
) |
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|
|
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|
Net deferred income tax assets
|
|
$ |
153,787 |
|
|
$ |
193,450 |
|
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|
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|
|
|
|
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|
Deferred income tax liabilities:
|
|
|
|
|
|
|
|
|
Depreciation and amortization
|
|
$ |
(102,657 |
) |
|
$ |
(130,645 |
) |
|
|
|
|
|
|
|
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|
Total deferred income tax liabilities
|
|
|
(102,657 |
) |
|
|
(130,645 |
) |
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|
|
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|
Net deferred income taxes
|
|
$ |
51,130 |
|
|
$ |
62,805 |
|
|
|
|
|
|
|
|
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|
Deferred income taxes / liabilities included in the balance sheet
are:
|
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|
|
|
|
|
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|
Deferred income tax asset—noncurrent
|
|
$ |
77,479 |
|
|
$ |
90,872 |
|
Deferred income tax liability—noncurrent
|
|
|
(26,349 |
) |
|
|
(28,067 |
) |
|
|
|
|
|
|
|
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|
Net deferred income taxes
|
|
$ |
51,130 |
|
|
$ |
62,805 |
|
|
|
|
|
|
|
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|
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|
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits |
A reconciliation of the beginning and ending amount of unrecognized
tax benefits for the years ended December 31 is as follows (in
thousands):
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
2016 |
|
|
2015 |
|
|
2014 |
|
Balance of unrecognized tax benefits at beginning of year
|
|
$ |
21,079 |
|
|
$ |
14,780 |
|
|
$ |
14,996 |
|
Increases for tax positions of prior years
|
|
|
58 |
|
|
|
1,449 |
|
|
|
84 |
|
Decreases for tax positions of prior years
|
|
|
(361 |
) |
|
|
(47 |
) |
|
|
(412 |
) |
Increases for tax positions established for the current period
|
|
|
5,185 |
|
|
|
9,866 |
|
|
|
491 |
|
Decreases for settlements with taxing authorities
|
|
|
(167 |
) |
|
|
(594 |
) |
|
|
— |
|
Reductions resulting from lapse of applicable statute of
limitation
|
|
|
(1,310 |
) |
|
|
(4,218 |
) |
|
|
(239 |
) |
Adjustment resulting from foreign currency translation
|
|
|
(206 |
) |
|
|
(157 |
) |
|
|
(140 |
) |
|
|
|
|
|
|
|
|
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|
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|
Balance of unrecognized tax benefits at end of year
|
|
$ |
24,278 |
|
|
$ |
21,079 |
|
|
$ |
14,780 |
|
|
|
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|