Current Liabilities - Schedule of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables And Accruals [Abstract]
Accounts payable	$ 5,738	$ 7,448
Accrued inventory (in-transit and unvouchered receipts) and trade payables	4,290	3,548
Accrued purchasing card liability	1,760	1,581
Accrued franchise, sales and use taxes	281	45
Other accrued expenses	726	245
Accounts payable and accrued expenses	$ 12,795	$ 12,867