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Supplemental Executive Retirement Plan (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) installment age	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2013 USD ($)
Defined benefit plan, net periodic benefit cost	$ 108	$ 101
Supplemental Executive Retirement and Death Benefit Agreements
Time period for calculating base salary under SERP agreements	5 years
Retirement age | age	67
Share-based compensation arrangement by share-based payment award, award vesting period	6 years
Retirement plan monthly instalments | installment	180
Purchased Fixed Annuity for Financing Retirement Benefits | Supplemental Executive Retirement and Death Benefit Agreements
Other investments			$ 2,600	$ 11,400
Annuity contracts accrued income	$ 40	$ 32
Purchased Fixed Annuity for Financing Retirement Benefits | Supplemental Executive Retirement and Death Benefit Agreements | Other Assets
Cash surrender value of life insurance	$ 14,700

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Age for retirement for calculation of benefit under SERP Agreements.

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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