NET INCOME PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
NET INCOME PER SHARE
Net Income (Numerator)	$ 3,937	$ 2,039
Less: amounts allocated to nonvested shares	(39)	(6)
Basic net income available to common stockholders	3,898	2,033
Computation of basic and diluted net income per share
Add-back: amounts allocated to nonvested shares	39	6
Less: amounts re-allocated to nonvested shares	(39)	(6)
Diluted net income available to common stockholders	$ 3,898	$ 2,033
Weighted Average Common Shares Outstanding (Denominator)
Weighted Average Common Shares Outstanding Basic	35,600,000	35,478,000
Weighted Average Common Shares Outstanding Diluted	36,547,000	36,447,000
Per Share Amount
Basic net income available to common stockholders (in dollars per share)	$ 0.11	$ 0.06
Diluted net income available to common stockholders (in dollars per share)	$ 0.11	$ 0.06
Antidilutive securities excluded from computation of diluted net income per share
Weighted-average outstanding stock options that were antidilutive (in Shares)	2,600,000	3,200,000
Stock options
Weighted Average Common Shares Outstanding (Denominator)
Effect on weighted average common shares outstanding from dilutive securities	947,000	969,000