Note 10 - Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

	December 31,
	2012		2013
	(in thousands)
Senior Unsecured Notes Payable (a)	$	250,000	$	250,000
Senior Secured Revolving Credit Facility, Bank of America, N.A. (b)		99,926		45,027
Working capital facilities, Barclays (c)		34,459		37,943
Various subordinated unsecured notes payable; maturing at various dates from 2011 through 2014 (d)		575		318
		384,960		333,288
Less current portion		6,258		318
	$	378,702	$	332,970

Schedule of Guarantor Obligations [Table Text Block]

Pricing Tier	Consolidated Senior Secured Leverage Ratio						Commitment Fee/Unused Line Fee			Letter of Credit Fee			Eurocurrency Rate Loans			Base Rate Loans
1	≥	2.50	to 1.0					0.50	%		3.75	%		3.75	%		2.75	%
2	≥	2.00	to 1.0	but <	2.50	to 1.0		0.45	%		3.50	%		3.50	%		2.50	%
3	≥	1.50	to 1.0	but <	2.00	to 1.0		0.40	%		3.25	%		3.25	%		2.25	%
4	≥	1.00	to 1.0	but <	1.50	to 1.0		0.35	%		3.00	%		3.00	%		2.00	%
5				<	1.00	to 1.0	0.30	%		2.75	%		2.75	%		1.75	%

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

	Amount
Years ended December 31:
2014	$	318
2015		37,943
2016		45,027
2017		—
2018		—
Thereafter		250,000
Total	$	333,288