Note 10 - Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

	December 31,		September 30,
	2013		2014
	(in thousands)
Senior Unsecured Notes Payable (a)	$	250,000	$	250,000
Senior Secured Revolving Credit Facility, Bank of America, N.A. (b)		45,027		163,358
Working capital facilities, Barclays (c)		37,943		44,668
Subordinated unsecured notes payable, matured in 2014		318		—
		333,288		458,026
Less current portion		318		44,668
	$	332,970	$	413,358

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
Three months ended December 31, 2014	$	—
Year ended December 31:
2015		44,668
2016		163,358
2017		—
2018		—
Thereafter		250,000
Total	$	458,026