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Note 14 - Summary of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Costs and estimated earnings in excess of billings on uncompleted contracts, net $ 2,888 $ 2,186
Accrued employee benefits 5,946 5,324
Inventories 2,618 1,937
Trade receivable, net 266 372
Net operating loss carryforwards 7,843 582
Tax credit carryforwards 4,791 996
Other assets 2,737 6,067
Other 520 1,441
Deferred Tax Assets, Gross 27,609 18,905
Valuation allowance (7,057) (1,858)
Deferred Tax Assets, Net 20,552 17,047
Property and equipment (24,229) (23,903)
Intangible assets (980) (1,150)
Prepaid expenses (467) (522)
Total Deferred Tax Liabilities (25,676) (25,575)
Net deferred tax liabilities $ (5,124) $ (8,528)