Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Weighted-average shares for basic and diluted earnings per share [Table Text Block]

Weighted-average shares for basic and diluted earnings per share are presented below.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Weighted-average common shares outstanding (basic)		7,287,435		7,192,350		7,262,541		7,192,350
Dilutive effect of assumed exercise of stock options		16,467		58,352		16,392		54,965
Weighted-average common shares outstanding (diluted)		7,303,902		7,250,702		7,278,933		7,247,315