Note 11 - Leases - Lease Related Assets and Liabilities - Lease Related Assets and Liabilities on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating lease right-of-use assets	$ 39	$ 47
Total lease assets	40	48
Current portion of operating leases	15	13
Operating leases, net of current portion	31	45
Finance	1	1
Total lease liabilities	47	$ 59
Operating weighted average remaining lease term (Year)		5 years
Finance weighted average remaining lease term (Year)		3 years
Operating weighted average discount rate		12.17%
Finance weighted average discount rate		5.18%
Property, Plant and Equipment, Net [Member]
Finance lease assets	1	$ 1
Long-term Debt, Net of Current Portion [Member]
Finance	$ 1	$ 1