Income Taxes (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Valuation allowance release	$ 13,600,000		$ (15,268,000)	$ 5,435,000	$ 6,110,000
Income tax expense due to adjustments to deferred tax assets or liabilities			4,400,000
Income tax expense based on earnings			1,400,000	1,000,000	700,000
Decrease in uncertain tax position				(1,500,000)
Reversal of interest accrued on uncertain tax position				(100,000)
Interest expense recognized				42,000	55,000
Current:
Current Federal tax benefit (provision)			(298,000)	1,379,000	(655,000)
Current State and Local tax benefit (provision)			(1,162,000)	(763,000)	(779,000)
Current income tax benefit (provision), net			(1,460,000)	616,000	(1,434,000)
Deferred:
Deferred Federal income tax benefit (provision)			(5,591,000)	3,797,000	4,856,000
Deferred State and Local income tax benfit (provision)			(442,000)	1,638,000	1,254,000
Change in deferred tax asset valuation allowance	$ (13,600,000)		15,268,000	(5,435,000)	(6,110,000)
Deferred income tax benefit (provision), net			9,235,000	0	0
Income tax benefit (provision), net			7,775,000	616,000	(1,434,000)
Effective Income Tax Rate Reconciliation, Amount
Expected federal tax expense at statutory rate			(44,930,000)	(47,621,000)	(115,960,000)
Tax impact of REIT election			41,169,000	44,320,000	113,278,000
Expected tax benefit (provision) at TRS			(3,761,000)	(3,301,000)	(2,682,000)
State income tax expense, net of federal benefit			(318,000)	(1,081,000)	(483,000)
Change in valuation allowance			14,340,000	6,556,000	2,832,000
Other permanent items			(381,000)	(1,558,000)	(1,101,000)
Alternative minimum tax credit			1,421,000
Effect of rate change			(3,526,000)
Income tax benefit (provision), net			7,775,000	616,000	(1,434,000)
Deferred tax assets
Net operating loss carryover			4,427,000	10,270,000
Other reserves			1,301,000	1,945,000
State taxes and other			3,232,000	2,716,000
Depreciation			532,000	702,000
Total deferred tax assets			9,492,000	15,633,000
Deferred tax liabilities
Amortization			(63,000)	(119,000)
Deferred revenue			(157,000)	(192,000)
Other			(37,000)	(54,000)
Total deferred tax liabilities			(257,000)	(365,000)
Total net deferred tax asset before valuation allowance			9,235,000	15,268,000
Valuation allowance				(15,268,000)
Deferred tax assets, net			9,235,000
Net operating loss carryforwards for federal income tax purposes			$ 15,600,000	$ 27,100,000
BuyEfficient, LLC | Sold, not considered a discontinued operation
Income tax expense related to gain on sale of entity					700,000
Rochester Portfolio | Sold, considered a discontinued operation
Income tax provision included in discontinued operations					$ 105,000
Forecast
Corporate tax rate (as a percent)		21.00%
Maximum
Corporate tax rate (as a percent)			35.00%