Note 1 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($)				12 Months Ended
	Feb. 26, 2021	May 12, 2020	Nov. 15, 2016	Dec. 31, 2020	Dec. 31, 2019	Nov. 15, 2021	Feb. 25, 2021	Mar. 27, 2020	Jan. 27, 2020	Jan. 26, 2020
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Cash And Cash Equivalents				$ 196,000,000	$ 233,000,000
Outstanding inter-company loans				449,000,000	408,000,000
Short-Term Intercompany Loans				150,000,000	110,000,000
Net increase (decrease) in cash, cash equivalents, restricted cash and cash in assets held for sale				(34,000,000)	23,000,000
Net cash (used in) provided by operating activities				(35,000,000)	12,000,000
Inter-company transactions amount transferred		$ 70,000,000
Estimated recoveries				$ 21,000,000	21,000,000
Operating or finance lease classification criteria description				The primary criteria used to classify transactions as operating or finance leases are: (1) whether the ownership transfers at the end of the lease, (2) whether the lease term is equal to or greater than 75% of the economic life of the asset, and (3) whether the present value of the minimum lease payments is equal to or greater than 90% of the fair value of the asset at inception of the lease.
Advertising Expense				$ 2,000,000	5,000,000
Minimum [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Service agreements prepayment period				3 months
Revenue recognition payment terms				30 days
Interest for payment terms				1 year
Minimum [Member] | Equipment Subject to Operating Leases [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Property, Plant and Equipment, Useful Life				3 years
Maximum [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Service agreements prepayment period				6 years
Revenue recognition payment terms				60 days
Maximum [Member] | Equipment Subject to Operating Leases [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Property, Plant and Equipment, Useful Life				7 years
Other Long-Term Assets [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Estimated recoveries				$ 18,000,000	18,000,000
Other Current Assets [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Estimated recoveries				$ 3,000,000	3,000,000
Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Proceeds from issuance of convertible preferred stock	$ 235,000,000
Payments of stock issuance costs	$ 10,000,000
Subsequent Event [Member] | Securities Purchase Agreement [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Common stock, shares, issued	1,000,000
Common stock, shares, issued price	$ 10.00
Common stock, aggregate purchase price	$ 10,000,000
Term Loan Credit Agreement [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Long-term debt, term	5 years
Long-term debt	$ 225,000,000
Long-term debt, maximum additional withdrawal	$ 50,000,000
Unsecured Convertible Promissory Notes [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Debt instrument, maturity date	May 28, 2026
Debt instrument, aggregate principal amount	$ 25,000,000
Debt instrument, interest rate	5.00%
Series A Preferred Stock [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Redeemable preferred stock						$ 200,000,000
Preferred stock, redemption date			Nov. 15, 2021	Nov. 15, 2021
Series A Preferred Stock [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Stock repurchased	1,000,000
Payments for repurchase of preferred stock	$ 100,000,000
Series C Preferred Stock [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Preferred stock, redemption terms				If any shares of Series C Preferred Stock have not been converted prior to 91 days following the fifth anniversary of the initial issuance of the Series C Preferred Stock, the Company will be required to redeem such shares at a redemption price equal to the liquidation preference of the redeemed shares plus the amount of accrued and unpaid dividends thereon; however, the holders of the Series C Preferred Stock have the right to extend such date by up to two years.
Series C Preferred Stock [Member] | Subsequent Event [Member] | Purchase Agreement [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Proceeds from issuance of preferred stock	100,000,000
Initial proceeds from issuance of preferred stock	75,000,000
Proceeds from issuance of preferred stock subject to Hart-Scott-Rodino Antitrust Improvements Act clearance	$ 25,000,000
Series B Preferred Stock [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Preferred stock, redemption terms				If any shares of Series B Preferred Stock have not been converted prior to 91 days following the fifth anniversary of the initial issuance of the Series B Preferred Stock, the Company will be required to redeem such shares at a redemption price equal to the liquidation preference of the redeemed shares plus the amount of accrued and unpaid dividends thereon.
Series B Preferred Stock [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Preferred stock, number of shares issued	1,000,000
ABL Credit Agreement [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Long-term line of credit				$ 90,000,000	80,000,000
Debt instrument, maturity date				May 26, 2021
Line of credit facility, maximum borrowing capacity				$ 150,000,000				$ 110,000,000	$ 120,000,000	$ 150,000,000
Credit facility, maturity date				February 26, 2024, or the date that is 90 days prior to the earliest scheduled maturity date or mandatory redemption date of any of the Company’s outstanding term loan, convertible notes, Series B Preferred Stock, Series C Preferred Stock or any refinancings of any of the foregoing
ABL Credit Agreement [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Line of credit facility, maximum borrowing capacity	$ 90,000,000						$ 110,000,000
Cash Collateralized Letter of Credit Facility Agreement [Member] | Subsequent Event [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Line of credit facility, maximum borrowing capacity	$ 50,000,000
United States [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Cash And Cash Equivalents				$ 99,000,000	72,000,000
Outside US [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Cash And Cash Equivalents				97,000,000	161,000,000
China [Member]
Basis Of Presentation And Recent Accounting Pronouncements [Line Items]
Cash And Cash Equivalents				$ 34,000,000	$ 89,000,000