Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
U.S federal income tax rate	35.00%
State income taxes (benefit), net of federal tax benefit	$ 1,161,000	$ (322,000)	$ 2,510,000
State income taxes (benefit), net of federal tax benefit (impact of REIT election), net of valuation allowance	1,200,000	900,000	2,500,000
Valuation allowance	(17,312,000)	(17,069,000)
Increase in valuation allowance	243,000	3,702,000	664,000
Accumulated undistributed earnings invested	6,100,000
Additional taxes (net of foreign tax credits)	300,000
Foreign operating losses carry forward	83,200,000
State tax credits	3,500,000
Deferred tax asset net of valuation allowance	4,400,000
Unrecognized tax benefits, net	1,200,000
Decrease in unrecognized tax benefits	100,000
Recognized tax benefits that will reduce company's tax rate	1,200,000
Interest and penalties recognized	100,000	0
Accrued income tax examination penalties and interest	100,000	100,000
Tax adjustment due to immaterial error correction	(7,904,000)	$ (7,389,000)	$ (14,093,000)
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards	146,000,000
Domestic Country
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards	300,000
Restatement Adjustment | Prior Year Misstatement
Operating Loss Carryforwards [Line Items]
Tax adjustment due to immaterial error correction	$ 2,700,000