Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Benefit Plans [Abstract]
Employer contribution (in hundredths)	50.00%
Maximum annual contribution per employee (in hundredths)	6.00%
Contributions made by employer	$ 1,600,000	$ 1,300,000	$ 1,000,000
Retirement benefits paid per month	25,000
Disbursements under plan	$ 300,000	300,000	300,000
Actuarial assumption discount rate	2.62%
Actuarial assumption monthly benefit	$ 25,000
Actuarial Assumption, Projected Payouts, Year One	300,000
Actuarial Assumption, Projected Payouts, Year Two	300,000
Actuarial Assumption, Projected Payouts, Year Three	300,000
Actuarial Assumption, Projected Payouts, Year Four	300,000
Actuarial Assumption, Projected Payouts, Year Five	300,000
Actuarial Assumption, Projected Payouts, After Five Years	1,100,000
Retirement plan expense	357,000	$ (34,000)	$ 219,000
Accrued potential future payouts	$ 3,300,000