Note 9 - Senior Notes, Credit Facilities and Capital Leases (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities [Table Text Block]

Interest rates:
Spread over the London Interbank Offer Rate	2.25	-	3.25%
Spread over alternative base rate	1.25	-	2.25%
Standby fee per annum on undrawn amounts		0.50%
Covenant financial ratios:
Senior leverage ratio (debt secured by liens/EBITDA)		not more than	2.50	:1
Leverage ratio (total debt less unencumbered cash/EBITDA)		not more than	4.00	:1
Interest coverage ratio (EBITDA/interest expense)		not more than	3.00	:1

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

Twelve-month period ending March 31,
2016	$	10,195
2017		6,997
2018		3,821
2019		1,700
Total		22,713
Less: imputed interest		(1,046	)
Net capital lease obligation	$	21,667