Note 11 - Long-Term Debt And Convertible Debentures (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Debt [Table Text Block]

	December 31,		December 31,
	2012		2011
Revolving credit facility	$	230,740	$	180,057
6.40% Senior Notes		37,500		50,000
5.44% Senior Notes		60,000		80,000
Unamortized gain on settlement of interest rate swaps		229		386
Adjustment to senior notes resulting from interest rate swap		358		332
Capital leases maturing at various dates through 2017		2,815		2,337
Other long-term debt maturing at various dates up to 2018		5,563		3,303
		337,205		316,415
Less: current portion		39,038		216,373
Long-term debt - non-current	$	298,167	$	100,042
Convertible Debentures		77,000		77,000
	$	375,167	$	177,042

Schedule of Maturities of Long-term Debt [Table Text Block]

2013	$	39,038
2014		110,693
2015		33,396
2016		28
2017 and thereafter		231,050