STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Option Shares, Outstanding	584,688
Option Shares, Granted	0
Option Shares, Exercised	(5,500)
Option Shares, Forfeited	0
Option Shares, Expired	0
Option Shares, Outstanding	579,188	584,688
Option Shares, Vested and expected to vest	438,188
Weighted-Average Exercise Price, Outstanding	$ 6.48
Weighted-Average Exercise Price, Granted	$ 0
Weighted-Average Exercise Price, Exercised	$ 3.99
Weighted-Average Exercise Price, Forfeited	$ 0
Weighted-Average Exercise Price, Expired	$ 0
Weighted-Average Exercise Price, Outstanding	$ 6.51	$ 6.48
Weighted-Average Exercise Price, Vested and expected to vest	$ 7.21
Weighted Average Remaining ContractualLife, Outstanding (Years)	5 years 1 month 6 days	5 years 4 months 24 days
Weighted Average Remaining Contractual Life (Years), Vested and expected to vest	4 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding (in dollars)	$ 758,000
Aggregate Intrinsic Value, Outstanding (in dollars)	1,278,000	758,000
Aggregate Intrinsic Value, Vested and expected to vest (in dollars)	$ 796,000