Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
U.S federal income tax rate	35.00%
Impact of REIT election	$ 0	$ 14,946,000	$ 79,033,000
Tax benefit related to settlements of uncertain tax positions		5,700,000
Valuation allowance	(13,368,000)	(12,704,000)
Increase in valuation allowance	(700,000)
Accumulated undistributed earnings invested	8,000,000
Additional taxes (net of foreign tax credits)	400,000
Foreign operating losses carry forward	26,900,000
State tax credits	1,800,000
Deferred tax asset net of valuation allowance	3,600,000
Unrecognized tax benefits, net	2,000,000
Decrease in unrecognized tax benefits	400,000
Recognized tax benefits that will reduce company's tax rate	2,000,000
Interest and penalties recognized	400,000	700,000	0
Accrued income tax examination penalties and interest	600,000	400,000
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards		142,200,000
Domestic Country
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards		$ 16,900,000