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Supplemental Disclosure of Noncash Investing and Financing Activities (Details Textual) - USD ($) $ in Millions	Jul. 31, 2020	Mar. 25, 2020	Jan. 31, 2020	Dec. 10, 2019	Oct. 31, 2019	Jan. 15, 2019	Jan. 29, 2018	Jul. 27, 2017
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member]
Debt Instrument, Face Amount			$ 158.5	$ 158.5
Debt Instrument, Interest Rate, Stated Percentage	10.00%		10.00%	10.00%	10.00%
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	10.00%	10.00%	10.00%	10.00%	10.00%			10.00%
Debt Instrument Exchanged, Face Amount		$ 59.1	$ 23.2	$ 23.2
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member]
Debt Instrument, Face Amount						$ 25.0
Debt Instrument, Interest Rate, Stated Percentage	10.50%		10.50%	10.50%	10.50%	10.50%
Debt Instrument Exchanged, Face Amount			$ 141.7	$ 141.7
Senior Unsecured Term Loan Credit Facility [Member]
Debt Instrument, Interest Rate, Stated Percentage							5.00%
Debt Instrument Exchanged, Face Amount			163.0	163.0
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member]
Debt Instrument, Face Amount			81.5	$ 81.5
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member]
Debt Instrument, Interest Rate, Stated Percentage		11.25%			11.25%
Debt Instrument, Exchange, Amount Issued		$ 59.1
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	11.25%				11.25%
Debt Instrument Exchanged, Face Amount					$ 103.1
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			23.3
Operating Lease, Liability, Total			$ 24.4

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