Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Supplemental Equity and Accumulated Other Comprehensive Income (Loss) (Details Textual)

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Note 8 - Supplemental Equity and Accumulated Other Comprehensive Income (Loss) (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.32 $ 0.32 $ 0.64 $ 0.64
Interest Expense, Total $ 2,902 $ 3,585 $ 6,311 $ 8,002
Income Tax Expense (Benefit), Total 14,120 10,224 12,522 16,168
Nonoperating Income (Expense), Total $ 23,831 $ 5,373 27,992 (4,381)
AOCI Attributable to Parent [Member]        
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent     (2,884) [1] (4,249) [2]
Interest Expense, Total     3,777  
Income Tax Expense (Benefit), Total     (892)  
Deferred Income Tax Expense (Benefit), Total     502 2,886
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI Attributable to Parent [Member]        
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent     $ 2,900 4,200
Interest Expense, Total       5,026
Deferred Income Tax Expense (Benefit), Total       1,289
Nonoperating Income (Expense), Total       $ 512
[1] Gains (losses) on the interest swap are reclassified into interest expense as payments on the derivative agreement are made. The Company reclassified $3,777 to interest expense and a related tax benefit of $892 during the six months ended December 31, 2021.
[2] Gains (losses) on the interest swap are reclassified into interest expense as payments on the derivative agreement are made. The Company reclassified $5,026 to interest expense and $512 to non-operating income relating to variable interest payments that were probable not to occur in the six months ended December 31, 2020. The Company also recorded a related tax benefit of $1,289 during the six months ended December 31, 2020.