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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning balance	$ 2,362	$ 1,236	$ 2,171	$ 1,088
Provision	2,769	679	4,966	1,649
Write Offs	(1,086)	(339)	(3,092)	(1,161)
Ending balance	$ 4,045	$ 1,576	$ 4,045	$ 1,576
Accounts receivable, general payment terms	30 days		30 days
Accounts receivable, international extended payment terms greater than	90 days		90 days