Supplemental Balance Sheet Information [Abstract] | Period [Axis] |
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2015-12-27 - 2016-12-31 |
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Supplemental Balance Sheet Information [Abstract] | |
Composition of Trade Receivables, Net | The composition of trade receivables, net is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Client receivables | $ | 283,997 |
| | $ | 230,010 |
| Unbilled revenue | 82,203 |
| | 45,996 |
| Total | 366,200 |
| | 276,006 |
| Less: Allowance for doubtful accounts | (2,150 | ) | | (5,938 | ) | Trade receivables, net | $ | 364,050 |
| | $ | 270,068 |
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Composition of Inventories | The composition of inventories is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Raw materials and supplies | $ | 18,893 |
| | $ | 15,998 |
| Work in process | 13,681 |
| | 12,101 |
| Finished products | 63,259 |
| | 65,636 |
| Inventories | $ | 95,833 |
| | $ | 93,735 |
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Composition of Other Current Assets | The composition of other current assets is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Investments | $ | 3,771 |
| | $ | 20,516 |
| Prepaid income tax | 40,705 |
| | 26,350 |
| Restricted cash | 532 |
| | 271 |
| Other | — |
| | 149 |
| Other current assets | $ | 45,008 |
| | $ | 47,286 |
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Composition of Property, Plant and Equipment, Net | The composition of property, plant and equipment, net is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Land | $ | 47,392 |
| | $ | 39,846 |
| Buildings (1) | 784,129 |
| | 713,841 |
| Machinery and equipment | 403,123 |
| | 362,695 |
| Leasehold improvements | 47,071 |
| | 41,477 |
| Furniture and fixtures | 24,148 |
| | 21,783 |
| Computer hardware and software | 127,283 |
| | 113,466 |
| Vehicles | 4,118 |
| | 3,819 |
| Construction in progress | 24,703 |
| | 25,845 |
| Total | 1,461,967 |
| | 1,322,772 |
| Less: Accumulated depreciation | (706,140 | ) | | (644,813 | ) | Property, plant and equipment, net | $ | 755,827 |
| | $ | 677,959 |
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(1) The balances as of December 31, 2016 and December 26, 2015 include capital lease buildings. See Note 7, “Long-Term Debt and Capital Lease Obligations.” |
Composition of Other Assets | The composition of other assets is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Life insurance policies | $ | 29,456 |
| | $ | 27,554 |
| Venture capital investments | 45,331 |
| | 32,730 |
| Restricted cash | 1,736 |
| | 1,745 |
| Other | 11,907 |
| | 9,614 |
| Other assets | $ | 88,430 |
| | $ | 71,643 |
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Composition of Other Current Liabilities | The composition of other current liabilities is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Accrued income taxes | $ | 25,621 |
| | $ | 12,168 |
| Other | 879 |
| | 376 |
| Other current liabilities | $ | 26,500 |
| | $ | 12,544 |
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Schedule of Other Liabilities | The composition of other long-term liabilities is as follows: | | | | | | | | | | December 31, 2016 | | December 26, 2015 | | | | | | (in thousands) | Long-term pension liability | $ | 89,984 |
| | $ | 34,604 |
| Accrued executive supplemental life insurance retirement plan and deferred compensation plan | 32,880 |
| | 30,188 |
| Other | 36,375 |
| | 24,270 |
| Other long-term liabilities | $ | 159,239 |
| | $ | 89,062 |
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