Federal Income Taxes - Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal tax benefit at statutory tax rate	$ (548)	$ (1,225)	$ (538)
TRS state and local taxes, net of Federal benefit	(165)	(190)	(84)
Permanent differences, net	951	1,131	1,663
Prior year over-accrual, net	0	(1,541)	0
Effect of Tax Cuts and Jobs Act	0	1,982	0
Other	172	404	(1,516)
REIT state and local income and franchise taxes	524	443	370
Total provision (benefit) for income taxes	$ 934	$ 1,004	$ (105)