Note 4 - Debt - Summary of Interest Expense (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accretion of original issue discount
Amortization of Debt Issuance Costs		608
Amortization of deferred financing costs		608
Interest income and other		(1,331)
Interest expense, net		1,527
Accretion of Original Issue Discount [Member]
Accretion of original issue discount
Amortization of Deferred Financing Costs [Member]
Amortization of Debt Issuance Costs		608
Amortization of deferred financing costs		608
Original Issue Discount Accelerated Amortization [Member]
Accretion of original issue discount
Deferred Financing Costs Accelerated Amortization [Member]
Amortization of Debt Issuance Costs
Amortization of deferred financing costs
Predecessor [Member]
Accretion of original issue discount			$ 52,414	$ 6,187
Amortization of Debt Issuance Costs			48,310	10,926
Amortization of deferred financing costs			48,310	$ 10,926
Interest income and other			(148)
Interest expense, net			157,465
Predecessor [Member] | Accretion of Original Issue Discount [Member]
Accretion of original issue discount			4,193
Predecessor [Member] | Amortization of Deferred Financing Costs [Member]
Amortization of Debt Issuance Costs			4,590
Amortization of deferred financing costs			4,590
Predecessor [Member] | Original Issue Discount Accelerated Amortization [Member]
Accretion of original issue discount			48,221
Predecessor [Member] | Deferred Financing Costs Accelerated Amortization [Member]
Amortization of Debt Issuance Costs			43,720
Amortization of deferred financing costs			43,720
Amended Credit Facility [Member]
Interest expense, debt, excluding amortization		1,779
Amended Credit Facility [Member] | Predecessor [Member]
Interest expense, debt, excluding amortization
DIP Lenders [Member]
Interest expense, debt, excluding amortization
DIP Lenders [Member] | Predecessor [Member]
Interest expense, debt, excluding amortization			2,087
Original Credit Agreement [Member]
Interest expense, debt, excluding amortization
Original Credit Agreement [Member] | Predecessor [Member]
Interest expense, debt, excluding amortization			53,596
Capital Lease Obligations [Member]
Interest expense, debt, excluding amortization		$ 471
Capital Lease Obligations [Member] | Predecessor [Member]
Interest expense, debt, excluding amortization			$ 1,206