Note 12 - Share-based Compensation - Summary of Restricted Stock Awards Outstanding (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Non-vested, Shares (in shares) | shares	7,104
Non-vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 3.31
Vested, Shares (in shares) | shares	(1,261)
Vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 6.17
Restricted Stock [Member]
Non-vested, Shares (in shares) | shares	3,038
Non-vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 5.88
Granted, Shares (in shares) | shares	217
Granted, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 2.21
Vested, Shares (in shares) | shares	(1,507)
Vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 4.29
Forfeited, Shares (in shares) | shares	(665)
Forfeited, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 5.81
Non-vested, Shares (in shares) | shares	1,083
Non-vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ / shares	$ 7.51