CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - 9 months ended Sep. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2014	$ 3,813	$ 3,895	$ 77,755	$ (1,969)	$ 83,494
Balance (in shares) at Dec. 31, 2014	38,131
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued for stock incentive plans, net	$ 32	1,440			1,472
Stock issued for stock incentive plans, net (in shares)	317
Stock purchased and retired	$ (31)	(2,077)			(2,108)
Stock purchased and retired (in shares)	(311)
Net income			10,461		10,461
Pension adjustment, net of taxes				36	36
Unrealized gain on securities, net of taxes and reclassification adjustment				14	14
Dividends declared			(4,588)		(4,588)
Excess tax benefits for share-based payments		221			221
Balance at Sep. 30, 2015	$ 3,814	$ 3,479	$ 83,628	$ (1,919)	$ 89,002
Balance (in shares) at Sep. 30, 2015	38,137