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Stock-Based Compensation - Stock Options (Details)
 3 Months Ended
Sep. 30, 2020
$ / shares
shares
Shares  
Outstanding options at beginning of period (in shares) | shares 173,348
Options granted (in shares) | shares 0
Options exercised (in shares) | shares (9,625)
Outstanding options at end of period (in shares) | shares 163,723
Weighted Average Exercise Price/Share  
Outstanding options at beginning of period (in dollars per share) | $ / shares $ 32.61
Options granted (in dollars per share) | $ / shares 0
Options exercised (in dollars per share) | $ / shares 31.14
Outstanding options at end of period (in dollars per share) | $ / shares $ 32.70
Exercisable at end of period (in shares) | shares 77,744
Exercisable at end of period (in dollars per share) | $ / shares $ 31.50