Equity Incentive Plan (Tables)

12 Months Ended

Dec. 31, 2014

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

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

Restricted share activity is summarized as follows:

	Shares Outstanding		Weighted Average Grant Date Fair Value
Unvested restricted stock at December 31, 2011		216,920	$	21.74
Restricted stock granted		94,850	$	24.40
Restricted stock vested		(55,870)	$	21.87
Restricted stock forfeited		(5,720)	$	24.32
Unvested restricted stock at December 31, 2012		250,180	$	22.66
Restricted stock granted		87,950	$	27.70
Restricted stock vested		(73,368)	$	22.50
Restricted stock forfeited		(15,680)	$	25.01
Unvested restricted stock at December 31, 2013		249,082	$	24.33
Restricted stock granted		83,210	$	28.72
Restricted stock vested		(79,588)	$	22.64
Restricted stock forfeited		(14,078)	$	26.03
Unvested restricted stock at December 31, 2014		238,626	$	26.24