EQUITY TRANSACTIONS (Details) (USD $)	12 Months Ended					0 Months Ended	12 Months Ended										0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Aug. 05, 2010	Aug. 04, 2010	Jan. 25, 2013 Stock options	Dec. 31, 2012 Stock options	Dec. 31, 2011 Stock options	Dec. 31, 2010 Stock options	Dec. 31, 2009 Stock options	Dec. 31, 2012 Stock options Minimum	Dec. 31, 2011 Stock options Minimum	Dec. 31, 2010 Stock options Minimum	Dec. 31, 2012 Stock options Maximum	Dec. 31, 2011 Stock options Maximum	Dec. 31, 2010 Stock options Maximum	Jan. 25, 2013 RSUs	Dec. 31, 2012 RSUs	Dec. 31, 2011 RSUs	Dec. 31, 2010 RSUs
Stock option activity
Common stock, shares authorized	100,000,000	100,000,000		100,000,000	50,000,000
Common stock, par value	$ 0.00001	$ 0.00001		$ 0.00001
Total stock-based compensation expense recognized	$ 1,060,000	$ 947,000	$ 606,000
Vesting period							3 years
Options
Outstanding at the beginning of the period (in shares)							800,800	398,000	1,209,500
Granted (in shares)						216,800	392,100	537,000
Expired (in shares)							(25,000)	(80,000)	(470,000)
Forfeited (in shares)							(24,000)	(54,200)	(341,500)
Outstanding at the end of the period (in shares)							1,143,900	800,800	398,000	1,209,500
Exercisable at the end of the period (in shares)							478,824
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)							$ 6.22	$ 11.46	$ 6.91		$ 2.04	$ 7.30	$ 2.50	$ 16.27	$ 16.27	$ 16.27
Granted (in dollars per share)						$ 3.94	$ 2.53	$ 2.28			$ 2.44	$ 2.04		$ 4.02	$ 2.78
Expired (in dollars per share)							$ 15.00	$ 8.48	$ 2.50			$ 7.30			$ 13.60
Forfeited (in dollars per share)							$ 14.24	$ 2.32	$ 7.68		$ 8.00		$ 3.71	$ 16.27		$ 16.27
Outstanding at the end of the period (in dollars per share)							$ 4.59	$ 6.22	$ 11.46	$ 6.91	$ 2.04	$ 2.04	$ 7.30	$ 16.27	$ 16.27	$ 16.27
Exercisable at the end of the period (in dollars per share)							$ 7.59				$ 2.04			$ 16.27
Weighted-Average Remaining Contractual Life
Outstanding							7 years 1 month 6 days	6 years 9 months 22 days	3 years 6 months 22 days	3 years 7 months 24 days
Exercisable at the end of the period							4 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding							1,400,000
Exercisable at the end of the period							400,000
Additional disclosures
Weighted-average grant date fair value of stock options granted (in dollars per share)							$ 1.65	$ 1.50
Unrecognized compensation expense							600,000											400,000
Recognition period of unrecognized compensation cost							1 year 9 months 14 days											1 year 7 months 24 days
Weighted-average assumptions
Expected stock price volatility (as a percent)							74.30%	72.90%
Risk-free interest rates (as a percent)							1.32%	2.43%
Expected life of options							6 years	5 years 10 months 10 days
RSUs
Unvested outstanding at the beginning of the period (in shares)																		227,769	350,000
Granted (in shares)																	163,768	192,790	246,200	880,000
Exercised (in shares)																			(199,997)
Vested (in shares)																		(120,523)	(117,000)	(180,000)
Forfeited (in shares)																			(51,434)	(350,000)
Unvested outstanding at the end of the period (in shares)																		300,036	227,769	350,000
Weighted-Average Grant Date Fair Value
Unvested outstanding at the beginning of the period (in dollars per share)																		$ 2.11	$ 1.81
Granted (in dollars per share)																		$ 3.39	$ 2.57	$ 1.87
Exercised (in dollars per share)																			$ 1.80
Vested (in dollars per share)																		$ 3.58	$ 2.77	$ 2.14
Forfeited (in dollars per share)																			$ 1.97	$ 1.78
Unvested outstanding at the end of the period (in dollars per share)																		$ 2.35	$ 2.11	$ 1.81
Additional Disclosures
Weighted Average Remaining Contractual Life																		1 year 7 months 24 days	1 year 10 months 6 days	2 years 3 months 18 days
Aggregate Fair Value																		$ 1,300,000	$ 400,000	$ 700,000
Fair value per unit (in dollars per share)						$ 2.64											$ 3.94