Stockholders' Equity and Earnings per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Unrealized Gains (Losses) on Securities [Abstract]
Balance at beginning of the period	$ 1,526	$ (926)
Net change for the year	466	2,452
Balance at end of the period	1,992	1,526
Defined Benefit Pension Plans [Abstract]
Balance at beginning of the period	(1,875)	(1,643)
Net change for the year	(309)	(232)
Balance at end of the period	(2,184)	(1,875)
Accumulated Other Comprehensive Income (Loss) [Abstract]
Balance at beginning of the period	(349)	(2,569)
Net change for the year	157	2,220
Balance at end of the period	(192)	(349)
Computation of earnings per share [Abstract]
Net Income applicable to common stock	$ 4,187	$ 3,290
Average number of common shares outstanding (in shares)	4,959,009	4,952,313
Effect of dilutive options (in shares)	0	0
Average number of common share outstanding used to calculate diluted earnings per common share (in shares)	4,959,009	4,952,313
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	161,000	191,000