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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2019
Income Tax Disclosure [Abstract] |
Components of Income Before Income Taxes | The components of our income before income taxes are as follows: ໿
﻿ |  | 2019 |  | 2018 |  | 2017
Income (Loss) before income taxes: |  |  |  |  |  |
Domestic |  | $ | (79,821) |  |  | $ | (59,233) |  |  | $ | (75,965) |
Foreign |  | 14,721 |  |  | 16,005 |  |  | 18,444 |
Total |  | $ | (65,100) |  |  | $ | (43,228) |  |  | $ | (57,521) |
Components of Income Tax Provision | The components of income tax provision for the years ended December 31, 2019, 2018 and 2017 are as follows: ໿
﻿ |  | 2019 |  | 2018 |  | 2017
Current: |  |  |  |  |  |
U.S. federal |  | $ | (135) |  |  | $ | (5,882) |  |  | $ | (83) |
State |  | 801 |  |  | 286 |  |  | 741 |
Foreign |  | 7,220 |  |  | 10,621 |  |  | 12,711 |
Total |  | 7,886 |  |  | 5,025 |  |  | 13,369 |
﻿ |  |  |  |  |  |
Deferred: |  |  |  |  |  |
U.S. federal |  | (1,008) |  |  | (322) |  |  | — |
State |  | — |  |  | 3 |  |  | 1,097 |
Foreign |  | (2,346) |  |  | (2,671) |  |  | (6,664) |
Total |  | (3,354) |  |  | (2,990) |  |  | (5,567) |
Total income tax provision |  | $ | 4,532 |  |  | $ | 2,035 |  |  | $ | 7,802 |
Schedule of Effective Tax Rate Reconciliation | The overall effective tax rate differs from the statutory federal tax rate for the years ended December 31, 2019, 2018 and 2017 as follows:
﻿ |  | % of Pretax Loss |  |  |  |
﻿ |  | 2019 |  | 2018 |  | 2017
Tax provision based on the federal statutory rate |  | 21.0 | % |  | 21.0 | % |  | 35.0 | %
Increase in valuation allowances |  | (21.3) |  |  | (34.8) |  |  | 48.8 |
Global intangible low-taxed income inclusion |  | (7.0) |  |  | (6.6) |  |  | — |
One-Time transition tax |  | — |  |  | (2.8) |  |  | (16.5) |
Nondeductible expenses |  | (1.8) |  |  | (2.3) |  |  | (3.3) |
Taxes related to distributions |  | (0.8) |  |  | (2.3) |  |  | — |
Foreign income tax rate differential |  | 1.0 |  |  | (1.5) |  |  | — |
Deemed income related to foreign operations |  | (0.5) |  |  | (1.5) |  |  | (4.1) |
Tax rate change |  | (1.1) |  |  | (1.4) |  |  | 2.2 |
Employee share-based payments |  | — |  |  | 0.1 |  |  | (13.2) |
Other |  | (0.9) |  |  | 0.6 |  |  | 2.9 |
Deferred and payable adjustments |  | 3.3 |  |  | 0.9 |  |  | (1.1) |
ASU 842 Adoption |  | (0.1) |  |  | — |  |  | — |
State taxes, net of federal benefit, before valuation allowance |  | 2.8 |  |  | 2.4 |  |  | 1.0 |
Return to provision adjustments |  | (2.5) |  |  | 2.7 |  |  | 2.0 |
Other tax credits |  | (1.9) |  |  | 5.1 |  |  | — |
U.S. Tax Cuts and Jobs Act - rate change adjustment |  | — |  |  | 6.4 |  |  | (65.9) |
Uncertain tax positions and audit settlements |  | 2.8 |  |  | 9.4 |  |  | (1.4) |
Effective tax rate |  | (7.0) | % |  | (4.6) | % |  | (13.6) | %
Components of Net Deferred Income Tax Assets and Net Deferred Income Tax Liabilities | The components of our net deferred income tax assets and net deferred income tax (liabilities) at December 31, 2019 and 2018 are as follows: ໿
(in thousands) |  | 2019 |  | 2018
Deferred income tax assets: |  |  |  |
Intangibles |  | $ | 20,624 |  |  | $ | 22,530 |
Stock options and restricted stock awards |  | 6,065 |  |  | 5,916 |
Reserves and allowances |  | 11,959 |  |  | 15,656 |
Net operating loss carryforwards |  | 57,782 |  |  | 41,356 |
Tax credit carryforwards |  | 12,749 |  |  | 13,669 |
Accrued liabilities |  | 3,218 |  |  | 3,040 |
Deferred revenue |  | 3,940 |  |  | 5,036 |
Lease Tax Asset |  | 5,970 |  |  | — |
163(j) Limitation Carryforward |  | 1,519 |  |  | — |
Valuation allowance |  | (109,643) |  |  | (95,398) |
Total deferred income tax assets |  | 14,183 |  |  | 11,805 |
﻿ |  |  |  |
Deferred income tax liabilities: |  |  |  |
Intangibles |  | 4,495 |  |  | 6,994 |
Property, plant and equipment |  | 3,282 |  |  | 5,265 |
Lease Tax Liability |  | 4,195 |  |  | — |
Liabilities related to distributions |  | — |  |  | 997 |
Other |  | 830 |  |  | 522 |
Total deferred income tax liabilities |  | 12,802 |  |  | 13,778 |
﻿ |  |  |  |
Net deferred income tax assets/( liabilities) |  | $ | 1,381 |  |  | $ | (1,973) |
Schedule of Unrecognized Tax Benefits |
﻿ |  | Unrecognized Tax Benefits* |  |  |  |
(in thousands) |  | 2019 |  | 2018 |  | 2017
Balance at January 1 |  | $ | (13,031) |  |  | $ | (18,310) |  |  | $ | (18,251) |
Increases related to prior year tax positions |  | (2,684) |  |  | (1,400) |  |  | (4,104) |
Decreases related to prior year tax positions |  | 857 |  |  | 8,272 |  |  | 4,045 |
Increases related to current year tax positions |  | (609) |  |  | (1,593) |  |  | — |
Balance at December 31 |  | $ | (15,467) |  |  | $ | (13,031) |  |  | $ | (18,310) |
*The unrecognized tax benefit balance includes an insignificant amount of interest and penalties.
Summary of Deferred Income Tax Asset Valuation Allowance | The following presents the changes in the balance of our deferred income tax asset valuation allowance:
Year Ended |  | Item |  | Balance at beginning of year |  | Additions (reductions) charged to expense |  | Other |  | Balance at end of year
2019 |  | Deferred income tax asset valuation allowance |  | $ | 95,398 |  |  | $ | 14,245 |  |  | $ | — |  |  | $ | 109,643 |
2018 |  | Deferred income tax asset valuation allowance |  | 80,796 |  |  | 14,602 |  |  | — |  |  | 95,398 |
2017 |  | Deferred income tax asset valuation allowance |  | 109,913 |  |  | (28,071) |  |  | (1,046) |  |  | 80,796 |

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