Income Taxes - Reconciliation of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount
Pre-tax income from taxable subsidiaries	$ 12,016	$ 13,768	$ 9,581
Federal provision at statutory tax rate	2,524	2,892	3,353
Valuation allowance	(2,174)	(127)	(1,020)
Income not subject to federal tax	(513)	(555)	(1,102)
State and local taxes, net of federal provision	387	539	644
Other	(174)	477	126
Non-deductible expenses	35	33	42
Revaluation of deferred taxes due to Tax Cuts and Jobs Act	0	0	1,857
Total Provision	$ 85	$ 3,259	$ 3,900