STOCKHOLDERS' EQUITY (Details 5) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock options
Stock based compensation
Total intrinsic value of options exercised	$ 1.7	$ 1.0	$ 0.5
Intrinsic value of options outstanding	0.8
Total unrecognized compensation cost	0.9
Weighted average period over which unrecognized compensation cost is expected to be recognized	2 years 2 months 12 days
Cash received from exercise of options	0.7	0.8	0.1
Restricted Shares
Stock based compensation
Total unrecognized compensation cost	$ 2.6
Weighted average period over which unrecognized compensation cost is expected to be recognized	1 year 7 months 6 days
Shares
Outstanding at the beginning of the period (in shares)	1,606,460	615,731	28,373
Granted (in shares)	886,331	1,405,965	662,562
Vested (in shares)	(398,838)	(405,650)	(36,248)
Forfeited (in shares)	(195,820)	(9,586)	(38,956)
Outstanding at the end of the period (in shares)	1,898,133	1,606,460	615,731
Weighted Average Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 2.54	$ 4.22	$ 11.15
Granted (in dollars per share)	$ 1.87	$ 2.19	$ 4.22
Vested (in dollars per share)	$ 3.52	$ 3.86	$ 9.67
Forfeited (in dollars per share)	$ 3.07	$ 3.20	$ 4.22
Outstanding at the end of the period (in dollars per share)	$ 1.97	$ 2.54	$ 4.22
Vesting period (excluding shares granted in March 2010)	3 years
Vesting period for shares granted in March 2010	9 months