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Income Taxes - Deferred Income Tax Balances (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
U.S. foreign tax credit | $ 3,309 | $ 5,516
Stock and long-term compensation plans | 2,817 | 1,693
Foreign NOL & other carryforwards | 13,771 | 2,629
US state NOL carryforwards | 248 | 263
US alternative minimum tax | 395 | 395
Deferred revenue | 672 | 752
Reserve for uncertain tax issues | (560) | (560)
Amortization and depreciation | 627 | 434
US tax on unremitted foreign earnings | (137) | (955)
Accrued expenses and other | 288 | 124
Total gross deferred tax assets | 21,430 | 10,291
Less: Valuation allowance | (13,719) | (2,500)
Net deferred income tax assets | 7,711 | 7,791
Swiss tax allowances | 851 | 1,235
Deferred revenue | 901 | 0
Intangible assets | 8,008 | 213
Deferred tax liabilities | $ 9,760 | $ 1,448

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