Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Deferred Tax Assets, State Taxes	$ 74	$ 633
Deferred Tax Assets, Reserves and Accruals	2,258	1,893
Deferred Tax Assets, Intangible Assets	28	207
Deferred Tax Assets, Tax Deferred Expense, Share-based Compensation	1,594	1,585
Deferred Tax Assets, Inventory	3,699	627
Deferred Tax Assets, Investments in JVs	6,318	1,411
Deferred Tax Liabilities, Depreciation	(34)	(39)
Deferred tax asset	13,937	6,317
Tax Cuts And Jobs Act Of 2017, Deferred Tax Asset, Change In Tax Rate, Provisional Adjustment	$ (148)	$ 3,190