BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Allowance for Sales Returns and Exchanges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for sales returns and exchanges - beginning of year	$ 12,519	$ 19,460	$ 22,767	$ 23,658
Additions to the allowance	9,243	11,402	22,161
Deductions against the allowance	$ (16,184)	$ (14,709)	$ (23,052)