Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Share-based Compensation [Abstract]

Restricted Stock and Performance Unit Awards [Table Text Block]

The following table summarizes the restricted stock award and performance unit award activity for the period ended March 31, 2017:

		Performance		Weighted Average
	Restricted	Stock		Grant Date
	Stock	Units		Fair Value
Outstanding at December 31, 2016	79,272	63,690	$	21.66
Granted	167,404	112,208		13.82
Vested	(21,808)	-		28.08
Adjustment for incentive awards expected to vest	-	3,871		29.69
Cancelled	(31,066)	(35,274)		14.07
Outstanding at March 31, 2017	193,802	144,495	$	16.35