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Note 17 - Income Taxes - Summary of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Contract assets, net $ 425  
Accrued employee benefits 2,157   2,806
Inventories 347   296
Trade receivable, net 1,040   105
Net operating loss carryforwards 12,867   9,850
Tax credit carryforwards 5,181   5,478
Other assets   1,201
Other 226   81
Deferred tax assets, gross 22,243   19,817
Valuation allowance (9,433)   (10,413)
Deferred tax assets, net 12,810   9,404
Contract assets, net   (110)
Property and equipment (11,984)   (9,524)
Intangible assets (310)   (433)
Prepaid expenses (470)   (278)
Total deferred tax liabilities (12,764)   (10,345)
Net deferred income tax assets (liabilities) 46    
Net deferred income tax assets (liabilities)     (941)
Deferred income tax assets, included in Other assets 114  
Deferred income taxes (68) $ (684) (941)
Net deferred income tax assets (liabilities) $ 46    
Net deferred income tax assets (liabilities)     $ (941)