Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Supplemental Equity and Accumulated Other Comprehensive Income (Loss) - Consolidated Changes in Equity (Details)

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Note 8 - Supplemental Equity and Accumulated Other Comprehensive Income (Loss) - Consolidated Changes in Equity (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Mar. 31, 2020
Mar. 31, 2019
Balance (in shares)     37,934,040       37,934,040  
Balance $ 1,323,348 $ 1,174,224 $ 1,165,589 $ 1,096,425 $ 1,109,469 $ 1,079,061 $ 1,165,589 $ 1,079,061
Net earnings 36,432 119,622 14,398 44,654 17,556 17,403 170,451 79,612
Other comprehensive income (loss) (25,105) 13,275 (8,106) 3,378 (12,379) (1,136) $ (19,936) $ (10,137)
Common stock issued for exercise of options (in shares)             398,320 263,995
Common stock issued for exercise of options 10,027 18,295 7,855 7,337 2,408 15,611    
Common stock issued for restricted stock awards (114) 0 (1,926) 0 0 (2,405)    
Cash dividends (12,279) (12,197) (12,169) (12,086) 0 (12,066)    
Stock-based compensation expense 7,745 10,017 8,267 5,640 6,784 11,327    
Common stock issued to employee stock purchase plan 1,216   1,096 834 0 842    
Employee stock purchase plan expense 110 112 99 84 77 238    
Share repurchases $ (50,112)     0 (15,404)      
Balance (in shares) 38,122,138           38,122,138  
Balance $ 1,291,268 $ 1,323,348 1,174,224 $ 1,146,266 $ 1,096,425 1,109,469 $ 1,291,268 $ 1,146,266
Cumulative Effect, Period of Adoption, Adjustment [Member]                
Balance     $ (879)     $ 594 $ (879) $ 594
Common Stock [Member]                
Balance (in shares) 38,283,000 38,084,000 37,934,000 37,735,000 37,803,000 37,608,000 37,934,000 37,608,000
Balance $ 383 $ 381 $ 379 $ 377 $ 378 $ 376 $ 379 $ 376
Common stock issued for exercise of options (in shares) 100,000 195,000 94,000 73,000 24,000 166,000    
Common stock issued for exercise of options $ 1 $ 2 $ 1 $ 1   $ 2    
Common stock issued for restricted stock awards (in shares) 1,000 4,000 50,000 1,000 3,000 24,000    
Common stock issued for restricted stock awards $ 0 $ 0 $ 0 $ 0 $ 0 $ 0    
Common stock issued to employee stock purchase plan (in shares) 8,000   6,000 4,000 0 5,000    
Common stock issued to employee stock purchase plan $ 0   $ 0 $ 0 $ 0 $ 0    
Share repurchases (in shares) (279,000)       (95,000)      
Share repurchases $ (3)       $ (1)      
Balance (in shares) 38,112,000 38,283,000 38,084,000 37,813,000 37,735,000 37,803,000 38,112,000 37,813,000
Balance $ 381 $ 383 $ 381 $ 378 $ 377 $ 378 $ 381 $ 378
Additional Paid-in Capital [Member]                
Balance 362,534 334,112 316,797 283,854 274,584 246,568 316,797 246,568
Common stock issued for exercise of options 10,026 18,293 7,854 7,336 2,408 15,609    
Common stock issued for restricted stock awards (0) (0) (0)          
Stock-based compensation expense 7,745 10,017 8,267 5,640 6,784 11,327    
Common stock issued to employee stock purchase plan 1,216   1,096 834   842    
Employee stock purchase plan expense 110 112 99 84 77 238    
Balance 381,632 362,534 334,112 297,748 283,854 274,584 381,632 297,748
Retained Earnings [Member]                
Balance 1,038,783 931,358 931,934 895,205 905,139 876,931 931,934 876,931
Net earnings 36,432 119,622 14,398 44,654 17,556 17,403    
Common stock issued for restricted stock awards (114)   (1,926)     (2,405)    
Cash dividends (12,279) (12,197) (12,169) (12,086) (12,086) (12,066)    
Share repurchases (50,109)       (15,404)      
Balance 1,012,713 1,038,783 931,358 927,773 895,205 905,139 1,012,713 927,773
Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]                
Balance     (879)     25,276 (879) 25,276
AOCI Attributable to Parent [Member]                
Balance (78,352) (91,627) (83,521) (83,011) (70,632) (44,814) (83,521) (44,814)
Other comprehensive income (loss) (25,105) 13,275 (8,106) 3,378 (12,379) (1,136)    
Balance $ (103,458) [1],[2] $ (78,352) $ (91,627) $ (79,633) [1] $ (83,011) (70,632) $ (103,458) [1],[2] (79,633) [1]
AOCI Attributable to Parent [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]                
Balance           $ (24,682)   $ (24,682)
[1] The Company reclassified ($2,102) to interest expense and a related tax benefit tax of $488 during the nine months ended March 31, 2020. The Company had deferred tax benefits of $4,390 and $1,792 included in the accumulated other comprehensive income loss as of March 31, 2020 and March 31, 2019, respectively.
[2] The gain (loss) on the interest rate swap will be reclassified into interest expense as payments on the derivative agreement are made. Approximately ($7,487) of the ($14,336) will be reclassified into earnings in the 12 months subsequent to March 31, 2020.