DEFERRED REVENUE AND COSTS (DEFERRED COSTS ROLLFORWARD TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
DEFERRED REVENUE AND COSTS [ABSTRACT]
Balance, beginning of year deferred costs	$ 18,604	$ 4,733	$ 4,873
Add: Amounts deferred due to new business	26,211	24,569	4,476
Less: Recognized expense	(20,220)	(10,701)	(4,636)
Net increase/(decrease) in deferred costs	5,991	13,868	(160)
Effect of foreign currency	26	3	20
Balance, end of year deferred costs	$ 24,621	$ 18,604	$ 4,733