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Stockholders' Equity (Details) - USD ($)
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Feb. 01, 2019
Nov. 27, 2017
Class of Stock [Line Items]        
Stock repurchase program authorized amount     $ 15,000,000 $ 5,000,000
Stock repurchase program shares repurchased (in shares) 100,000      
Repurchase of company stock $ 1,393,000 $ 0    
Remaining authorized repurchase amount $ 7,500,000      
Common Stock        
Class of Stock [Line Items]        
Exercise of options (in shares) 3,000      
Shares canceled or surrendered as payment of tax withholding (in shares) 4,000