Earnings per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Basic earnings per share computation [Abstract]
Net income applicable to common stock	$ 3,365	$ 3,280	$ 6,541	$ 6,567
Weighted average common shares outstanding (in shares)	3,039,734	3,060,998	3,040,822	3,062,210
Earnings per share - basic (in dollars per share)	$ 1.11	$ 1.07	$ 2.15	$ 2.14
Diluted earnings per share computation [Abstract]
Weighted average common shares outstanding for basic earnings per share (in shares)	3,039,734	3,060,998	3,040,822	3,062,210
Add: Dilutive effects of restricted stock (in shares)	927	1,578	405	781
Weighted average common shares outstanding for dilutive earnings per share (in shares)	3,040,661	3,062,576	3,041,227	3,062,991
Earnings per share - diluted (in dollars per share)	$ 1.11	$ 1.07	$ 2.15	$ 2.14
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive restricted stock excluded from net income per share calculations (in shares)	2,188	0	2,409	1,415
Antidilutive stock share price range (in dollars per share)		$ 0
Restricted Stock [Member] | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive stock share price range (in dollars per share)	$ 50.15		$ 34.70	$ 36.00
Restricted Stock [Member] | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive stock share price range (in dollars per share)	$ 50.50		$ 50.50	$ 44.50