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v3.20.2

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended
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Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019
Exercise of stock options | 6,455 | 13,642 | 14,609 | 28,152 | 85,379 | 186,521
Issuance of common stock through performance stock awards |  |  | 272,813 |  |  | 286,350
Common stock purchase plan | 31,705 | 31,114 | 58,734 | 26,726 | 31,455 | 44,161
Purchase of treasury stock |  | 1,196 | 110,520 |  |  | 111,835
Common stock shares issued for cash |  |  |  | 266,410 |  |
Common stock dividends/distributions | $ 0.50 | $ 0.50 | $ 1.00 | $ 0.96 | $ 0.96 | $ 0.96
Preferred stock dividend shares | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95
Additional Paid-in Capital [Member] |  |  |  |  |  |
Exercise of stock options | 6,455 | 13,642 | 14,609 | 28,152 | 85,379 | 186,521
Issuance of common stock through performance stock awards |  |  | 272,813 |  |  | 286,350
Common stock purchase plan | 31,705 | 31,114 | 58,734 | 26,726 | 31,455 | 44,161
Common stock shares issued for cash |  |  |  | 266,410 |  |
Treasury Stock [Member] |  |  |  |  |  |
Purchase of treasury stock |  | 1,196 | 110,520 |  |  | 111,835
Accumulated Deficit [Member] |  |  |  |  |  |
Common stock dividends/distributions | $ 0.50 | $ 0.50 | $ 1.00 | $ 0.96 | $ 0.96 | $ 0.96
Preferred stock dividend shares | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95 | $ 15.95

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