| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of income tax expense (benefit) | The income tax expense (benefit) consisted of the following (in thousands): | | | | | | | | | | | | | | Years Ended December 31, | | 2016 | | 2015 | | 2014 | Current: | | | | | | Federal | $ | — |
| | $ | — |
| | $ | — |
| State | 4,259 |
| | 2,058 |
| | — |
| Total current | $ | 4,259 |
| | $ | 2,058 |
| | $ | — |
| Deferred: | | | | | | Federal | $ | 9,815 |
| | $ | 9,819 |
| | $ | (142,884 | ) | State | (2,536 | ) | | (4,812 | ) | | (10,275 | ) | Total deferred | $ | 7,279 |
| | $ | 5,007 |
| | $ | (153,159 | ) | Total income tax expense (benefit) | $ | 11,538 |
| | $ | 7,065 |
| | $ | (153,159 | ) |
|
Schedule of reconciliation of the statutory U.S. federal income tax rate to the entity's effective income tax rate | The reconciliation of the statutory U.S. federal income tax rate to our effective income tax rate was as follows: | | | | | | | | | | | Years Ended December 31, | | 2016 | | 2015 | | 2014 | Statutory U.S. federal tax rate | 35.0 | % | | 35.0 | % | | (34.0 | )% | State taxes, net of federal benefit | 6.4 |
| | 0.1 |
| | (7.9 | ) | Equity-based compensation expense | 34.0 |
| | 0.4 |
| | 10.6 |
| Contingent consideration | 69.9 |
| | 4.7 |
| | 3.1 |
| Transaction costs | — |
| | 3.9 |
| | 9.7 |
| Other permanent items, net | 21.2 |
| | 3.2 |
| | 3.2 |
| Tax credits | (32.3 | ) | | (1.7 | ) | | (3.0 | ) | Write-down of acquired state net operating losses | 114.2 |
| | — |
| | — |
| Valuation allowance | (115.2 | ) | | (28.0 | ) | | (864.9 | ) | Other, net | (5.8 | ) | | 0.1 |
| | — |
| Effective tax rate | 127.4 | % | | 17.7 | % | | (883.2 | )% |
|
Schedule of components of the entity's deferred tax assets and liabilities | The components of our deferred tax assets and liabilities were as follows (in thousands): | | | | | | | | | | December 31, | | 2016 | | 2015 | Assets | | | | Net operating loss carryforwards | $ | 116,275 |
| | $ | 172,944 |
| Tax credit carryforwards | 9,415 |
| | 6,262 |
| Deferred revenue | 1,811 |
| | 626 |
| Equity-based compensation expense | 8,045 |
| | 5,464 |
| Capitalized research & development | 18,284 |
| | 25,216 |
| Reserves | 8,018 |
| | 8,900 |
| Contingent consideration | 4,140 |
| | 1,258 |
| Other | 9,769 |
| | 9,636 |
| Liabilities | | | | Property, plant and equipment depreciation | (2,145 | ) | | (2,844 | ) | Intangible assets and inventory | (367,667 | ) | | (400,357 | ) | Debt instruments | (1,040 | ) | | (1,213 | ) | Other | (542 | ) | | (3,178 | ) | | (195,637 | ) | | (177,286 | ) | Valuation allowance | (1,429 | ) | | (11,859 | ) | Net deferred tax liabilities | $ | (197,066 | ) | | $ | (189,145 | ) |
|
Summary of income tax contingencies | A reconciliation of our changes in uncertain tax positions is as follows (in thousands): | | | | | | | | | | | | | | Years Ended December 31, | | 2016 | | 2015 | | 2014 | Uncertain tax benefits at the beginning of the year | $ | 12,695 |
| | $ | — |
| | $ | — |
| Additions based on tax positions related to the current year | 300 |
| | 12,695 |
| | — |
| Additions for tax positions from prior years | 379 |
| | — |
| | — |
| Subtractions for tax positions from prior years | (44 | ) | | — |
| | — |
| Uncertain tax benefits at the end of the year | $ | 13,330 |
| | $ | 12,695 |
| | $ | — |
|
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