Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Total stock-based compensation	$ 5,171	$ 2,973	$ 9,156	$ 9,408
Cost of goods sold — retail
Total stock-based compensation	54	41	101	111
Sales and marketing
Total stock-based compensation	533	315	974	1,188
Technology
Total stock-based compensation	1,670	621	2,897	1,142
General and administrative
Total stock-based compensation	$ 2,914	$ 1,996	$ 5,184	$ 6,967