Note 9 - Earnings Per Share Attributable to Common Stockholders - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Antidilutive Securities (in shares)	2,362	2,321	2,350	2,357
Service Period Stock Options [Member]
Antidilutive Securities (in shares)	1,269	1,275	1,259	1,298
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities (in shares)	149	160	147	173
Performance Stock Options [Member]
Antidilutive Securities (in shares)	944	886	944	886