Note 2 - Earnings Per Share (Details Textual) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	0.8	0.9
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	1.5	0.5
Series A Redeemable Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	9.3	9.3
Series A Redeemable Convertible Preferred Stock [Member]
Temporary Equity, Par or Stated Value Per Share (in dollars per share)	$ 0.0001