BUSINESS SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment reporting information
Revenue, net	$ 293,204	$ 239,536	$ 605,198	$ 501,903
Cost of goods sold	235,365	196,367	488,423	411,226
Gross profit	57,839	43,169	116,775	90,677
Operating expenses	(53,674)	(43,150)	(105,195)	(88,183)
Other income (expense), net	(155)	493	173	746
Provision for income taxes	312	42	358	51
Net income	3,698	470	11,395	3,189	22,875	(8,007)
Direct
Segment reporting information
Revenue, net	36,250	33,936	78,192	74,833
Cost of goods sold	31,842	31,108	68,991	68,738
Gross profit	4,408	2,828	9,201	6,095
Fulfillment partner
Segment reporting information
Revenue, net	256,954	205,600	527,006	427,070
Cost of goods sold	203,523	165,259	419,432	342,488
Gross profit	53,431	40,341	107,574	84,582
Inter-segment
Segment reporting information
Revenue, net	$ 0	$ 0	$ 0	$ 0