ACCOUNTING POLICIES (Details 4) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2010
Revenue recognition
Number of principal segments									2
Product delivery period from date of shipment, minimum									1 day
Product delivery period from date of shipment, maximum									8 days
Consignment
Maximum revenue from consignment as a percentage of total net revenues									1.00%	1.00%	1.00%
International business
Maximum sales from international businesses as a percentage of aggregate net revenues									1.00%	1.00%	1.00%
Total revenues from International sales									$ 10,200,000	$ 8,800,000	$ 9,400,000
Ecommerce marketplace channels
Revenue from ecommerce marketplace channels as a percentage of aggregate net revenues									1.00%
Other businesses
Maximum revenue from other businesses as a percentage of total net revenues									1.00%
Club O loyalty program
Expiration period of Club O reward dollars after expiration of the customer's membership									90 days
Deferred revenue
Likelihood of gift card redemption to be remote, period									36 months
Sales returns allowance
Sales return period for which full refund will be granted									30 days
Sales return period for which reduced refund will be granted									30 days
Sales return received at returns processing facility for which reduced refund will be granted, period									45 days
Allowance for sales returns									10,600,000	10,900,000
Credit card chargeback allowance
Credit card chargeback allowance	182,000				187,000				182,000	187,000
Cost of goods sold
Total net revenue	342,034,000	255,352,000	239,536,000	262,367,000	314,077,000	239,738,000	234,992,000	265,470,000	1,099,289,000	1,054,277,000	1,089,873,000
Total net revenue (as a percent)									100.00%	100.00%	100.00%
Cost of goods sold
Product costs and other cost of goods sold									848,842,000	821,739,000	842,064,000
Fulfillment and related costs									52,017,000	53,450,000	58,169,000
Total cost of goods sold	280,823,000	208,810,000	196,367,000	214,859,000	263,216,000	201,365,000	195,222,000	215,386,000	900,859,000	875,189,000	900,233,000
Product costs and other cost of goods sold (as a percent)									77.00%	78.00%	78.00%
Fulfillment and related costs (as a percent)									5.00%	5.00%	5.00%
Total cost of goods sold (as a percent)									82.00%	83.00%	83.00%
Gross profit	61,211,000	46,542,000	43,169,000	47,508,000	50,861,000	38,373,000	39,770,000	50,084,000	198,430,000	179,088,000	189,640,000
Gross profit (as a percent)									18.00%	17.00%	17.00%
Advertising expense
Advertising expense									55,600,000	52,500,000	53,200,000
Prepaid advertising expense	$ 1,200,000				$ 1,407,000				$ 1,200,000	$ 1,407,000
Minimum
International business
Number of countries where entity offers its products to customers	100								100