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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Income Taxes [Abstract]    
Warranty reserves $ 2,356 $ 1,944
Amortizable intangible assets 2,183 1,127
Stock-based compensation 598 3,055
Accrued compensation and other 2,775 5,075
Inventories, additional costs capitalized for tax 8,206 7,281
Deferred tax asset 16,118 18,482
Prepaid expenses 264 1,133
Property and equipment 5,265 3,586
Deferred tax liability 5,529 4,719
Net deferred tax asset $ 10,589 $ 13,763