Note 7 - Long-term Debt - Early Extinguisment of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loss on early extinguishments and modifications of debt	$ 34,949	$ 61	$ 1,582
Senior Notes 6.875% Due 2023 [Member] | Premium and Consent Fees [Member]
Loss on early extinguishments and modifications of debt	25,785	0	0
Senior Notes 6.875% Due 2023 [Member] | Deferred Finance Charges [Member]
Loss on early extinguishments and modifications of debt	6,092	0	0
Bank Credit Facility [Member]
Loss on early extinguishments and modifications of debt	3,072	61	1,086
Amended Credit Facility [Member]
Loss on early extinguishments and modifications of debt	$ 0	$ 0	$ 496