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9. Income Taxes (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Net deferred tax asset $ 19,200    
Unrecognized tax benefits 0    
Income tax expense 3,841 $ 28,306 $ 20,361
Operating Income (Loss) [Member]      
Net deferred tax asset 12,400    
Federal [Member]      
Net deferred tax asset 13,900    
State [Member]      
Net deferred tax asset 5,300    
Net operating loss carryforwards $ 35,700    
Net operating losses expire Dec. 31, 2019