Organization and Summary of Significant Accounting Policies - Additional Information 2 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Operating lease liabilities	$ 2,319		$ 2,319
Operating lease right of use assets	2,299		2,299
Net assets obtained in exchange for new operating lease liabilities			2,862
Accounting Standards Update 2016-02
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Operating lease liabilities					$ 141
Operating lease right of use assets					$ 141
Net assets obtained in exchange for new operating lease liabilities			2,862
Selling Expenses
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Freight-out costs	$ 568	$ 806	$ 1,789	$ 1,966