CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2011	$ 3,738	$ 1,185	$ 89,953	$ (1,458)	$ 93,418us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2011	37,375,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	76	2,604			2,680
Stock issued for stock incentive plans, net (in shares)	767,000
Stock purchased and retired	(32)	(1,751)			(1,783)
Stock purchased and retired (in shares)	(321,000)
Net income			6,979		6,979us-gaap_NetIncomeLoss
Pension adjustment, net of taxes				(105)	(105)
Unrealized loss on securities, net of taxes and reclassification adjustments				(9)	(9)
Excess tax benefits for share-based payments		379			379
Dividends declared			(23,812)		(23,812)us-gaap_DividendsCommonStockCash
Balance at Dec. 31, 2012	3,782	2,417	73,120	(1,572)	77,747us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2012	37,821,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	37	1,597			1,634
Stock issued for stock incentive plans, net (in shares)	364,000
Stock purchased and retired	(9)	(567)			(576)
Stock purchased and retired (in shares)	(90,000)
Net income			7,528		7,528us-gaap_NetIncomeLoss
Pension adjustment, net of taxes				781	781
Unrealized loss on securities, net of taxes and reclassification adjustments				(62)	(62)
Excess tax benefits for share-based payments		136			136
Dividends declared			(5,705)		(5,705)us-gaap_DividendsCommonStockCash
Balance at Dec. 31, 2013	3,810	3,583	74,943	(853)	81,483us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2013	38,095,000				38,095,322us-gaap_CommonStockSharesOutstanding
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	25	1,729			1,754
Stock issued for stock incentive plans, net (in shares)	260,000
Stock purchased and retired	(22)	(1,759)			(1,781)
Stock purchased and retired (in shares)	(224,000)
Net income			8,914		8,914us-gaap_NetIncomeLoss
Pension adjustment, net of taxes				(1,034)	(1,034)
Unrealized loss on securities, net of taxes and reclassification adjustments				(82)	(82)
Excess tax benefits for share-based payments		342			342
Dividends declared			(6,102)		(6,102)us-gaap_DividendsCommonStockCash
Balance at Dec. 31, 2014	$ 3,813	$ 3,895	$ 77,755	$ (1,969)	$ 83,494us-gaap_StockholdersEquity
Balance (in shares) at Dec. 31, 2014	38,131,000				38,130,862us-gaap_CommonStockSharesOutstanding

Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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