NET INCOME PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
NET INCOME PER SHARE
Net income (loss)	$ 5,010	$ 4,235	$ (707)	$ 11,014
Less: amounts allocated to nonvested shares		(43)		(111)
Basic net income (loss) available to common stockholders	5,010	4,192		10,903
Computation of basic and diluted net income per share
Add back: amounts allocated to nonvested shares		43		111
Less: amounts re-allocated to nonvested shares		(43)		(111)
Diluted net income (loss) available to common stockholders	$ 5,010	$ 4,192		$ 10,903
Weighted Average Common Shares Outstanding (Denominator)
Weighted Average Common Shares Outstanding Basic	35,780,000	35,684,000	35,339,000	35,738,000
Weighted Average Common Shares Outstanding Diluted	36,288,000	36,497,000	35,339,000	36,634,000
Per Share Amount
Basic net income (loss) available to common stockholders (in dollars per share)	$ 0.14	$ 0.12	$ (0.02)	$ 0.31
Diluted net income (loss) available to common stockholders (in dollars per share)	$ 0.14	$ 0.11	$ (0.02)	$ 0.30
Stock options
Weighted Average Common Shares Outstanding (Denominator)
Effect on weighted average common shares outstanding from dilutive securities	366,000	813,000		896,000
Antidilutive securities excluded from computation of diluted net income per share
Anti-dilutive securities (in shares)	1,200,000	2,300,000	1,800,000	2,400,000
Nonvested share awards
Weighted Average Common Shares Outstanding (Denominator)
Effect on weighted average common shares outstanding, nonvested shares	142,000
Employee And Directors Stock Options Or Restricted Stock Member
Antidilutive securities excluded from computation of diluted net income per share
Anti-dilutive securities (in shares)			500,000