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Stockholders' Equity - Repurchases of our common stock (Details) - USD ($)
1 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2021
Jun. 30, 2020
Total Number of Shares Purchased 11,050 10,750 31,167 25,500 19,800 25,150 42,500 28,750 78,467 116,200
Average Price Paid per Share $ 2.50 $ 2.15 $ 2.21 $ 2.29 $ 2.68 $ 2.75 $ 3.00 $ 2.50 $ 2.27 $ 2.77
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs $ 349,263 $ 376,888 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 349,263 $ 0
Publicly Announced Plans Or Programs [Member]                    
Total Number of Shares Purchased 0 0 0 0 0 0 0 0 0 0