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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

Options activity under the stock-based compensation plans as of March 31, 2015 and changes during the three months ended March 31, 2015 were as follows:

		Shares				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding at December 31, 2014			882,657			$	5.65
Exercised			(110,500	)		$	3.85
Canceled/expired			—
Forfeited			(3,362	)
Outstanding at March 31, 2015			768,795			$	5.87				2.67			$	10,273,607
Exercisable at March 31, 2015			763,028			$	5.80				2.62			$	10,244,830

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

The fair value of the stock granted was based on the closing market price of its common stock as of the grant date. Generally, grants of restricted shares vest one-third, each, on the first, second and third anniversaries of the grant date

		Nonvested Shares				Weighted- Average Grant Date Fair Value
Nonvested at December 31, 2014			50,203			$	11.79

Granted			59,466				18.47
Vested			(20,565	)			10.76
Forfeited/cancelled/expired			—				—
Outstanding at March 31, 2015			89,104			$	16.43

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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