Employee Benefit Plans - Defined Contribution and Profit Sharing Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Required service period to participate in plans	1 year
401(k) plan
Defined Contribution Plan Disclosure [Line Items]
Company matching contribution of employees' contributions (as a percent)	5.00%	5.00%
Employer's matching contribution (in dollars)	$ 62,000	$ 60,000
Profit sharing plan
Defined Contribution Plan Disclosure [Line Items]
Employer's matching contribution (in dollars)	$ 0	$ 0