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Consolidated Condensed Statement of Changes in Stockholders' Equity - 3 months ended Sep. 30, 2018 - USD ($)
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Beginning Balance at Jun. 30, 2018 $ 77,289,479 $ 33,080 $ 41,757,645 $ 35,498,754 $ 0
Beginning Balance (shares) at Jun. 30, 2018 33,080,543 33,080,543      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of restricted common stock (shares)   86,396      
Issuance of restricted common stock $ 0 $ 86 (86)    
Common share repurchases, including shares surrendered for tax withholding (shares)   (9,087)      
Common share repurchases, including shares surrendered for tax withholding (89,992)       (89,992)
Retirements of treasury stock   $ (9) (89,983)   89,992
Stock-based compensation 215,373   215,373    
Net income attributable to the Company 5,795,801     5,795,801  
Common stock cash dividends, $0.10 per share (3,315,785)     (3,315,785)  
Ending Balance at Sep. 30, 2018 $ 79,894,876 $ 33,157 $ 41,882,949 $ 37,978,770 $ 0
Ending Balance (shares) at Sep. 30, 2018 33,157,852 33,157,852