Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2008	$ 24,526	$ 15,506	$ 43,251	$ (385)	$ 82,898
Balance (in shares) at Dec. 31, 2008	4,905,229
Comprehensive income:
Net income	0	0	1,682	0	1,682
Unrealized holding gains (losses) arising during the period (net of tax expense)	0	0	0	(450)	(450)
Reclassification adjustment, (net of tax)	0	0	0	(191)	(191)
Pension liability adjustment (net of tax benefit)	0	0	0	(237)	(237)
Total comprehensive income	0	0	1,682	(878)	804
Exercise of stock options (in shares)	13,124
Exercise of stock options	66	152	(80)	0	138
Repurchase and retirement of common stock (in shares)	(1,818)
Repurchase and retirement of common stock	(9)	0	(27)	0	(36)
Stock compensation expense	0	111	0	0	111
Cash dividends	0	0	(2,307)	0	(2,307)
Balance at Dec. 31, 2009	24,583	15,769	42,519	(1,263)	81,608
Balance (in shares) at Dec. 31, 2009	4,916,535
Comprehensive income:
Net income	0	0	1,547	0	1,547
Unrealized holding gains (losses) arising during the period (net of tax expense)	0	0	0	(601)	(601)
Reclassification adjustment, (net of tax)	0	0	0	(357)	(357)
Pension liability adjustment (net of tax benefit)	0	0	0	(348)	(348)
Total comprehensive income	0	0	1,547	(1,306)	241
Exercise of stock options (in shares)	23,874
Exercise of stock options	119	127	0	0	246
Tax benefit from disqualification of stock options	0	16	0	0	16
Repurchase and retirement of common stock (in shares)	(3,420)
Repurchase and retirement of common stock	(17)	0	(24)	0	(41)
Stock compensation expense	0	114	0	0	114
Cash dividends	0	0	(1,232)	0	(1,232)
Balance at Dec. 31, 2010	24,685	16,026	42,810	(2,569)	80,952
Balance (in shares) at Dec. 31, 2010	4,936,989				4,936,989
Comprehensive income:
Net income	0	0	3,290	0	3,290
Unrealized holding gains (losses) arising during the period (net of tax expense)	0	0	0	2,971	2,971
Reclassification adjustment, (net of tax)	0	0	0	(519)	(519)
Pension liability adjustment (net of tax benefit)	0	0	0	(232)	(232)
Total comprehensive income	0	0	3,290	2,220	5,510
Exercise of stock options (in shares)	22,020
Exercise of stock options	110	174	0	0	284
Stock compensation expense	0	110	0	0	110
Cash dividends	0	0	(991)	0	(991)
Balance at Dec. 31, 2011	$ 24,795	$ 16,310	$ 45,109	$ (349)	$ 85,865
Balance (in shares) at Dec. 31, 2011	4,959,009				4,959,009