Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Stock-based Compensation [Abstract]

Schedule of Nonvested Share Activity [Table Text Block]

The following table summarizes the Restricted Stock Award and Performance Unit Award activity for the period ended March 31, 2015:

	Restricted	Performance		Weighted Average
	Stock	Stock		Grant Date
	Units	Units		Fair Value
Outstanding at December 31, 2014	108,237	71,990	$	36.25
Granted	13,706	41,114		44.64
Vested	(24,839)	(23,877)		30.27
Adjustment for incentive awards expected to vest	-	3,844		47.71
Canceled	(1,000)	-		38.44
Outstanding at March 31, 2015	96,104	93,071	$	40.44