BUSINESS SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Segment reporting information
Revenue, net	$ 311,994	$ 262,367
Cost of goods sold	253,058	214,859
Gross profit	58,936	47,508
Operating expenses	(51,521)	(45,033)
Other income (expense), net	328	253
Provision for income taxes	46	9
Net income	7,697	2,719	19,647	(16,275)
Direct
Segment reporting information
Revenue, net	41,942	40,897
Cost of goods sold	37,149	37,630
Gross profit	4,793	3,267
Fulfillment partner
Segment reporting information
Revenue, net	270,052	221,470
Cost of goods sold	215,909	177,229
Gross profit	54,143	44,241
Inter-segment
Segment reporting information
Revenue, net	$ 0	$ 0