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Earnings Per Share - Factors Used in Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Basic
Net income to common stockholders	$ 4,506	$ 5,732	$ 13,749	$ 24,041
Weighted average common shares outstanding	17,859,604	17,711,527	17,845,431	17,711,527
Basic earnings per common share	$ 0.25	$ 0.32	$ 0.77	$ 1.36
Diluted
Net income to common stockholders	$ 4,506	$ 5,732	$ 13,749	$ 24,041
Dilutive effect of preferred stock		196		583
Net income to common stockholders - diluted	$ 4,506	$ 5,928	$ 13,749	$ 24,624
Weighted average common shares outstanding	17,859,604	17,711,527	17,845,431	17,711,527
Average shares and dilutive potential common shares	18,101,676	18,587,821	18,041,897	18,502,220
Diluted earnings per common share	$ 0.25	$ 0.32	$ 0.76	$ 1.33
Stock Options
Diluted
Antidilutive shares	164,175		164,175
Restricted Stock
Diluted
Dilutive effects of restricted stock	148,977	149,790	125,215	77,591
Preferred Stock - Series A
Diluted
Dilutive effects of assumed conversion of shares		315,773		315,773
Antidilutive shares	315,773		315,773
Preferred Stock - Series B
Diluted
Dilutive effects of assumed conversion of shares		360,578		360,578
Antidilutive shares	360,578		360,578
Warrant
Diluted
Dilutive effects of assumed exercises of stock warrants	93,095	50,153	71,251	36,751

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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