Emergence from Voluntary Reorganization under Chapter 11 / Fresh Start Accounting Reconciliation of Enterprise Value to Estimated Fair Vale of Successor Company (Details) - USD ($) $ / shares in Units, $ in Thousands	May 31, 2020	May 30, 2020	May 29, 2020
Debt Instrument [Line Items]
Plus: Cash and cash equivalents	$ 10,592	$ 21,253
Less: fair value of debt	(145,420)
Total implied equity	141,172
Postconfirmation, Stockholders' Equity	$ 18,084
Postconfirmation Common Stock Per Share Value	$ 17.23
Convertible Debt [Member]
Debt Instrument [Line Items]
Less: equity portion of Convertible Notes			$ (193,508)
Common Stock [Member]
Debt Instrument [Line Items]
Shares issued upon emergence	1,049,804		1,049,804
Median [Member]
Debt Instrument [Line Items]
Enterprise Value	$ 276,000
Equity Component [Member] | Convertible Debt [Member]
Debt Instrument [Line Items]
Less: equity portion of Convertible Notes	$ (123,088)		$ (123,088)