Note 2 - Bankruptcy and Related Matters - Debtor-in-Possession Unaudited Condensed Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net loss	$ (40,547)	$ (47,580)	$ (165,362)	$ (138,762)
Amortization of stock-based compensation			1,896	2,731
Amortization of deferred financing costs			10,279	2,127
Deferred income tax expense (benefit)			73,107	(38,600)
Accounts receivable			1,072	11,306
Prepaids and other			(4,891)	406
Accounts payable			(3,202)	294
Net cash used in operating activities			(42,455)	(4,283)
Proceeds from intercompany DIP financing			17,000
Net cash provided by financing activities			69,144	5,142
Net (decrease) increase in cash and cash equivalents			5,295	(11,292)
Cash and cash equivalents at beginning of period			8,822	21,939
Cash and cash equivalents at end of period	14,117	$ 10,647	14,117	$ 10,647
Parent Company [Member]
Net loss	(22,834)		(118,996)
Amortization of stock-based compensation			1,464
Amortization of deferred financing costs			6,471
Deferred income tax expense (benefit)			84,091
Accounts receivable			25
Prepaids and other			(1,144)
Accounts payable			(26)
Other accrued liabilities and other, including intercompany activity			22,120
Net cash used in operating activities			(5,995)
Proceeds from intercompany DIP financing			10,000
Net cash provided by financing activities			10,000
Net (decrease) increase in cash and cash equivalents			4,005
Cash and cash equivalents at beginning of period			2
Cash and cash equivalents at end of period	$ 4,007		$ 4,007