Note 7 - Debt, Credit Facilities and Capital Leases (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

Twelve-month period ending December 31,	Senior Notes			RQ Notes			Total
2019	$	34,822		$	1,372		$	36,194
2020		34,822			1,372		$	36,194
2021		518,107			29,778		$	547,885
Total		587,751			32,522			620,273
Less: interest		(81,251	)		(3,202	)	$	(84,453	)
Principal		506,500			29,320			535,820
Less: unamortized discount		(3,021	)		—		$	(3,021	)
Long-term debt	$	503,479		$	29,320		$	532,799

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) (1)	not more than 4.50:1
Interest coverage ratio (EBITDA/interest expense)	not less than 3.00:1

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

Twelve-month period ending December 31,
2019	$	5,745
2020		4,480
2021		3,052
2022		733
2023		23
Total		14,033
Less: imputed interest		(898	)
Net capital lease obligation		13,135
Current portion of capital leases		5,264
Long-term capital leases	$	7,871