Statement of Shareholders' Equity (Statement) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Stock held in trust [member] [Member]	Deferred Compensation, Share-based Payments [Member]
Stock Issued During Period, Shares, New Issues		54,235
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 391,979	$ 10,847	$ 235,660	$ 261,870	$ (116,398)	$ (3,777)	$ 3,777
Net (loss) earnings	21,723			21,723
Other Comprehensive (Loss) Income, Net of Tax	(9,676)				(9,676)
Stock Issued During Period, Shares, Employee Benefit Plan		2
Stock Issued During Period, Value, Employee Benefit Plan	91		91
Stock Issued During Period, Shares, Restricted Stock Award, Gross		186
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	$ (37)	(37)
Dividends, Cash	3			3
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	3,345		3,345
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		87
Stock Issued During Period, Value, Stock Options Exercised	1,328	$ 18	1,310
Adjustments to Additional Paid in Capital, Other	(6,405)		(6,405)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust	0					3	(3)
Treasury Stock, Shares, Retired		(110)
Treasury Stock, Retired, Par Value Method, Amount		$ (22)
Treasury Stock, Retired, Cost Method, Amount	(4,379)			(4,357)
Net (loss) earnings	64,668
Other Comprehensive (Loss) Income, Net of Tax	6,014
Stock Issued During Period, Shares, New Issues		54,400
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	398,009	$ 10,880	233,964	279,239	(126,074)	(3,774)	3,774
Net (loss) earnings	20,901			20,901
Other Comprehensive (Loss) Income, Net of Tax	(4,827)				(4,827)
Stock Issued During Period, Shares, Employee Benefit Plan		2
Stock Issued During Period, Value, Employee Benefit Plan	97		97
Stock Issued During Period, Shares, Restricted Stock Award, Gross		73
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	$ (14)	(14)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	2,841		2,841
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		2
Stock Issued During Period, Value, Stock Options Exercised	38	$ 1	37
Adjustments to Additional Paid in Capital, Other	(996)		(996)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust	91	$ 1	90			199	(199)
Treasury Stock, Shares, Retired		(220)
Treasury Stock, Retired, Par Value Method, Amount		$ (44)
Treasury Stock, Retired, Cost Method, Amount	(10,176)			10,132
Stock Issued To Acquired For And Distributed From Rabbi Trust		2
Stock Issued During Period, Shares, New Issues		54,259
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	405,978	$ 10,852	236,019	290,008	(130,901)	(3,575)	3,575
Net (loss) earnings	22,044			22,044
Other Comprehensive (Loss) Income, Net of Tax	20,517				20,517
Stock Issued During Period, Shares, Employee Benefit Plan		5
Stock Issued During Period, Value, Employee Benefit Plan	117	$ 1	116
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	3,340		3,340
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		11
Stock Issued During Period, Value, Stock Options Exercised	278	$ 2	276
Adjustments to Additional Paid in Capital, Other	(9)		(9)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust	0	$ 3	(3)			(1)	1
Treasury Stock, Shares, Retired		(330)
Treasury Stock, Retired, Par Value Method, Amount		$ (66)
Treasury Stock, Retired, Cost Method, Amount	(14,040)			13,974
Stock Issued To Acquired For And Distributed From Rabbi Trust		15
Stock Issued During Period, Shares, New Issues		53,960
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	438,225	$ 10,792	239,739	298,078	(110,384)	(3,576)	3,576
Stock Issued During Period, Shares, New Issues		52,946
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	433,694	$ 10,589	243,137	284,102	(104,134)	(3,542)	3,542
Net (loss) earnings	19,131			19,131
Other Comprehensive (Loss) Income, Net of Tax	(4,617)				(4,617)
Stock Issued During Period, Shares, Employee Benefit Plan		4
Stock Issued During Period, Value, Employee Benefit Plan	133	$ 1	132
Stock Issued During Period, Shares, Restricted Stock Award, Gross		185
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	$ (37)	(37)
Dividends, Cash	1			1
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	2,975		2,975
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		16
Stock Issued During Period, Value, Stock Options Exercised	408	$ 3	405
Adjustments to Additional Paid in Capital, Other	(5,770)		(5,770)
Treasury Stock, Shares, Retired		(377)
Treasury Stock, Retired, Par Value Method, Amount		$ (75)
Treasury Stock, Retired, Cost Method, Amount	(14,899)			(14,824)
Net (loss) earnings	65,238
Other Comprehensive (Loss) Income, Net of Tax	1,407
Stock Issued During Period, Shares, New Issues		52,774
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	431,054	$ 10,555	240,842	288,408	(108,751)	(3,542)	3,542
Net (loss) earnings	16,308			16,308
Other Comprehensive (Loss) Income, Net of Tax	7,823				7,823
Stock Issued During Period, Shares, Employee Benefit Plan		2
Stock Issued During Period, Value, Employee Benefit Plan	125	$ 1	124
Stock Issued During Period, Shares, Restricted Stock Award, Gross		17
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	$ (3)	3
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 2,941		2,941
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	15
Stock Issued During Period, Value, Stock Options Exercised	$ 352	3	349
Adjustments to Additional Paid in Capital, Other	(43)		(43)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust	0	$ 2	(2)			3,112	3,112
Treasury Stock, Shares, Retired		(1,278)
Treasury Stock, Retired, Par Value Method, Amount		$ (256)
Treasury Stock, Retired, Cost Method, Amount				50,769
Treasury Stock, Value, Acquired, Cost Method	(51,025)
Stock Issued To Acquired For And Distributed From Rabbi Trust		10
Stock Issued During Period, Shares, New Issues		51,540
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	407,535	$ 10,308	244,208	253,947	(100,928)	(6,654)	6,654
Net (loss) earnings	29,798			29,798
Other Comprehensive (Loss) Income, Net of Tax	(1,799)				(1,799)
Stock Issued During Period, Shares, Employee Benefit Plan		4
Stock Issued During Period, Value, Employee Benefit Plan	155	$ 1	154
Stock Issued During Period, Shares, Restricted Stock Award, Gross		3
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	$ (1)	1
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 3,478		3,478
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	5
Stock Issued During Period, Value, Stock Options Exercised	$ 129	$ 1	128
Adjustments to Additional Paid in Capital, Other	(58)		(58)
Stock Value Issued to Acquired For and Distributed From Rabbi Trust	0					(1,794)	(1,794)
Treasury Stock, Shares, Retired		(423)
Treasury Stock, Retired, Par Value Method, Amount		$ (85)
Treasury Stock, Retired, Cost Method, Amount				15,125
Treasury Stock, Value, Acquired, Cost Method	(15,210)
Stock Issued During Period, Shares, New Issues		51,129
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 424,028	$ 10,226	$ 247,909	$ 268,620	$ (102,727)	$ (4,860)	$ 4,860