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v3.19.1

At the Market Offering (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Aug. 09, 2018 | Dec. 31, 2017
Class of Stock [Line Items] |  |  |
Common stock, par value (in dollars per share) | $ 1 |  | $ 1
Number of shares issued in transaction (shares) | 44,378 |  |
Value of shares issued | $ 982,521 |  |
At-The-Market Program | BB&T Capital Markets |  |  |
Class of Stock [Line Items] |  |  |
Common stock, par value (in dollars per share) |  | $ 1.00 |
Aggregate offering price, up to |  | $ 10,000,000 |
Number of shares issued in transaction (shares) | 44,378 |  |
Value of shares issued | $ 982,519 |  |
Payments for commissions | $ 20,470 |  |

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