Earnings per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Basic earnings per share computation [Abstract]
Net income applicable to common stock	$ 3,280	$ 3,753	$ 6,567	$ 7,202
Weighted average common shares outstanding (in shares)	3,031,279	3,058,663	3,032,491	3,063,500
Earnings per share - basic (in dollars per share)	$ 1.08	$ 1.23	$ 2.17	$ 2.35
Diluted earnings per share computation [Abstract]
Weighted average common shares outstanding for basic earnings per share (in shares)	3,031,279	3,058,663	3,032,491	3,063,500
Add: Dilutive effects of restricted stock (in shares)	1,578	1,409	781	624
Weighted average common shares outstanding for dilutive earnings per share (in shares)	3,032,857	3,060,072	3,033,272	3,064,124
Earnings per share - diluted (in dollars per share)	$ 1.08	$ 1.23	$ 2.16	$ 2.35
Antidilutive restricted stock excluded from net income per share calculations (in shares)	0	2,447	1,415	4,115