Note 12 - Long-Term Debt and Convertible Debentures (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Text Block [Abstract]

Schedule of Debt [Table Text Block]

	December 31, 2013			December 31, 2012
Revolving credit facility	$	148,647		$	230,740
3.84% Notes		150,000			-
6.40% Notes		25,000			37,500
5.44% Notes		40,000			60,000
Unamortized gain on settlement of interest rate swaps		107			229
Adjustments to long term debt resulting from interest rate swaps		(5,196	)		358
Capital leases maturing at various dates through 2017		2,555			2,815
Other long-term debt maturing at various dates up to 2017		11,681			5,563
		372,794			337,205
Less: current portion		44,785			39,038
Long-term debt - non-current	$	328,009		$	298,167
Convertible Debentures		-			77,000
	$	328,009		$	375,167

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

2014	$	44,785
2015		34,230
2016		346
2017		148,736
2018 and thereafter		144,697