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Significant Components of Net Deferred Income Tax (Liability) Asset (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred income tax liabilities:    
Depreciation and amortization $ (3,121) $ (3,461)
Intangibles (12,380) (12,549)
Equity in earnings (154) (504)
Total deferred income tax liabilities (15,655) (16,514)
Net deferred income tax asset (liability) (33) (1,881)
Valuation allowance (2,077) (1,897)
Net deferred income tax (liability) asset $ (2,110) $ (3,778)