Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Total stock-based compensation	$ 839	$ 998	$ 2,577	$ 2,949
Cost of goods sold — direct
Total stock-based compensation	52	45	129	130
Sales and marketing
Total stock-based compensation	50	77	140	255
Technology
Total stock-based compensation	165	183	491	550
General and administrative
Total stock-based compensation	$ 572	$ 693	$ 1,817	$ 2,014