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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