Note 15 - Earnings Per Share - Basic and Diluted Earnings Per Share Attributable to Common Shareholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended						9 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2024	Mar. 31, 2023
Net income available to common Shareholders		$ 12,953	$ 17,411	$ 14,939	$ 22,356	$ 28,166	$ 29,880	$ 45,303	$ 80,402
Basic weighted average shares common shares outstanding (in shares)		25,531			25,477			25,520	25,470
Dilutive effect of stock options and other share-based awards (1) (in shares)	[1]	119			122			112	110
Diluted weighted average shares common shares outstanding (in shares)		25,650			25,599			25,632	25,580
Net income per basic share (in dollars per share)		$ 0.51			$ 0.88			$ 1.78	$ 3.16
Net income per diluted share (in dollars per share)		$ 0.5			$ 0.87			$ 1.77	$ 3.14

[1] Dilutive potential common shares consist of stock options, restricted stock units and performance units.