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NET INCOME PER COMMON SHARE NET INCOME (LOSS) PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$ 15,382	$ 10,964	$ 10,624	$ 9,743
Weighted Average Number of Shares Outstanding, Basic	45,859,286	45,953,312	45,841,446	45,871,166
Incremental Common Shares Attributable to Call Options and Warrants	498,802	663,419	503,908	726,359
Incremental Common Shares Attributable to Nonvested Shares with Forfeitable Dividends	138,032	240,578	178,186	299,373
DILUTED (in shares)	46,496,120	46,857,309	46,523,540	46,896,898
Earnings Per Share, Basic	$ 0.34	$ 0.24	$ 0.23	$ 0.21
Earnings Per Share, Diluted	$ 0.33	$ 0.23	$ 0.23	$ 0.21

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