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Note 22 - Subsequent Events (Details Textual) - The 10.0% 2022 Notes [Member] - Senior Secured Notes [Member] - USD ($) $ in Millions	Jun. 02, 2021	Apr. 30, 2021	Oct. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Dec. 10, 2019
Debt Instrument, Interest Rate, Stated Percentage		10.00%	10.00%	10.00%	10.00%	10.00%
Subsequent Event [Member]
Debt Instrument, Repurchased Face Amount	$ 111.2
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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X

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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X

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Details

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- Details

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