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CAPITAL STOCK and EARNINGS PER SHARE - Additional Information (Details) | Mar. 31, 2021 series shares | Mar. 31, 2020 series shares
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EARNINGS PER SHARE (EPS) |  |
Number of authorized common shares | 90,000,000 | 90,000,000
Number of outstanding common shares | 29,498,662 | 29,354,594
Preferred stock, shares authorized | 10,000,000 | 10,000,000
Number of series of preferred stock | series | 1 | 1
Shares of preferred stock outstanding | 0 | 0

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