Note 1 - Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Weighted Average Number of Shares [Table Text Block]

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Weighted-average shares outstanding - basic		57,155		57,118		57,151		57,115
Weighted-average shares underlying stock options and restricted stock		132		-		58		-
Weighted-average shares outstanding - diluted		57,287		57,118		57,209		57,115

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	September 30,			December 31,
	2012			2011
Accumulated balances of items included in accumulated other comprehensive loss:
Increase in pension liability	$	(26,889	)	$	(26,889	)
Income tax benefit		(10,487	)		(10,487	)
Accumulated other comprehensive loss	$	(16,402	)	$	(16,402	)

Property, Plant and Equipment [Table Text Block]

	September 30,			December 31,			Estimated Useful Lives
	2012			2011			(in years)
Property and equipment:
Land	$	23,625		$	23,451
Buildings and improvements		55,658			53,322		7	to	40
Equipment		311,868			308,454		3	to	20
		391,151			385,227
Accumulated depreciation		(256,015	)		(248,128	)
Total property and equipment, net	$	135,136		$	137,099