Note 2 - Common Stock Outstanding and Earnings Per Share (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		7 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Apr. 30, 2020	Dec. 31, 2019
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)	1,000		1,500	1,000
Stock Repurchased During Period, Shares (in shares)	0	1,400	1,500
Payments for Repurchase of Common Stock			$ 13.6
Payments for Repurchase of Common Stock, Average Price Per Share (in dollars per share)			$ 9.11