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Stock Compensation - Other (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 01, 2018 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Stock Compensation |  |  |  |  |
Special stock dividend, rate percent | 4.00% |  |  |  |
Dividends Payable, Date to be Paid | Jul. 01, 2018 |  |  |  |
Stock based compensation expense |  |  | $ 0 | $ 3,000 | $ 17,000
Remaining unrecognized compensation expense related to non-vested stock awards |  |  |  | $ 0 |
Exercised (in shares) |  | 20,909 | 20,909 | 0 | 0
Exercised (per share) |  | $ 14.20 | $ 14.20 | $ 0.00 | $ 0.00
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  |  | $ 1,500,000 | $ 1,700,000 |

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