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Note 17 - Income Taxes - Summary of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Contract assets, net $ 425
Accrued employee benefits 3,089 2,157
Inventories 147 347
Trade receivable, net 788 1,040
Net operating loss carryforwards 5,391 12,867
Tax credit carryforwards 5,173 5,181
Other 509 226
Deferred tax assets, gross 15,097 22,243
Valuation allowance (6,126) (9,433)
Deferred tax assets, net 8,971 12,810
Contract assets, net (1,703)
Property and equipment (10,578) (11,984)
Intangible assets (226) (310)
Prepaid expenses (587) (470)
Total deferred tax liabilities (13,094) (12,764)
Net deferred income tax assets (liabilities) (4,123)  
Net deferred income tax assets (liabilities)   46
Deferred income taxes (4,265) (68)
Net deferred income tax assets (liabilities) (4,123)  
Net deferred income tax assets (liabilities)   46
Other Assets [Member]    
Deferred income tax assets, included in Other assets $ 142 $ 114