SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 7) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares
Basic (in shares)									16,734	16,302	16,140
Effect of dilutive stock options (in shares)									373	642	110
Diluted (in shares)									17,107	16,944	16,250
Per Share Amount
Basic (in dollars per share)	$ 0.23	$ 0.24	$ 0.18	$ 0.20	$ 0.12	$ 0.34	$ 0.38	$ 0.26	$ 0.85	$ 1.10	$ 0.55
Effect of dilutive stock options (in dollars per share)									$ (0.02)	$ (0.04)
Diluted (in dollars per share)	$ 0.22	$ 0.24	$ 0.18	$ 0.19	$ 0.12	$ 0.32	$ 0.37	$ 0.26	$ 0.83	$ 1.06	$ 0.55
Stock options
Anti-dilutive securities
Options to purchase shares of common stock									563,633	418,071	1,518
Exercise prices, low end of range (in dollars per share)									$ 16.66	$ 21.65	$ 11.00
Exercise prices, high end of range (in dollars per share)									$ 29.00	$ 29.00	$ 29.00