Note 20 - Stock Repurchase Program (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		8 Months Ended	11 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Mar. 31, 2020	May 07, 2019
Treasury Stock, Value, Acquired, Cost Method	$ 12,880	$ 8,601
May 2019 Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount					$ 50,000
Treasury Stock, Shares, Acquired (in shares)	400,000		741,934	1,141,934
Treasury Stock, Value, Acquired, Cost Method	$ 12,900		$ 26,400	$ 39,300
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)	$ 32.20		$ 35.59	$ 34.40
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 10,700			$ 10,700