SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 12) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based compensation
Non-cash stock-based compensation	$ 4,454	$ 3,323	$ 2,737
Stock options
Stock-based compensation
Options granted (in shares)	0	64,000	146,500
Non-cash stock-based compensation	1,400	1,800	1,600
Vesting period	4 years
Restricted Stock
Stock-based compensation
Non-cash stock-based compensation	$ 3,100	$ 1,800	$ 1,600
Restricted shares of common stock issued (in shares)	100,902	72,083	21,925
Vesting period	4 years