Consolidated Statements of Shareholders’ Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2011	$ 6,000	$ 19,347,000	$ 48,590,000	$ (6,897,000)	$ 61,046,000
Balance (in Shares) at Dec. 31, 2011	5,993,062
Comprehensive Income (Loss):
Net earnings			3,031,000		3,031,000
Net change during the period related to:
Pensions, net of tax benefit				(1,060,000)	(1,060,000)
Comprehensive Income					1,971,000
Common shares issued upon exercise of options		889,000			889,000
Common shares issued upon exercise of options (in Shares)	138,252				138,252
Common shares issued upon exercise of Stock Appreciation Rights (in Shares)	10,324
Share-based compensation expense		893,000			893,000
Warrants exercised (in Shares)	44,912
Common shares received as payment for stock options		282,000	(282,000)
Common shares received as payment for stock options (in Shares)	(34,073)
Purchase and retirement of common shares		(123,000)	(314,000)		(437,000)
Purchase and retirement of common shares (in Shares)	(36,570)				(36,570)
Cash dividends declared			(6,574,000)		(6,574,000)
Balance at Dec. 31, 2012	6,000	21,288,000	44,451,000	(7,957,000)	57,788,000
Balance (in Shares) at Dec. 31, 2012	6,115,907				6,115,907
Comprehensive Income (Loss):
Net earnings			5,850,000		5,850,000
Net change during the period related to:
Cash flow hedges, net of taxes of $40,000				(85,000)	(85,000)
Pensions, net of tax benefit				4,828,000	4,828,000
Comprehensive Income					10,593,000
Common shares issued upon exercise of options		2,216,000			2,216,000
Common shares issued upon exercise of options (in Shares)	206,441				206,441
Restricted shares issued		1,555,000			1,555,000
Restricted shares issued (in Shares)	208,617
Common shares issued upon exercise of Stock Appreciation Rights (in Shares)	2,654
Share-based compensation expense		788,000			788,000
Tax benefit from exercise of stock options		31,000			31,000
Purchase and retirement of common shares		(50,000)	(112,000)		(162,000)
Purchase and retirement of common shares (in Shares)	(13,211)				(13,211)
Cash dividends declared			(874,000)		(874,000)
Balance at Dec. 31, 2013	$ 6,000	$ 25,828,000	$ 49,315,000	$ (3,214,000)	$ 71,935,000
Balance (in Shares) at Dec. 31, 2013	6,520,408				6,520,408