Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
U.S federal income tax rate	35.00%
Impact of REIT election	$ 0	$ 0	$ 14,946
Tax benefit related to settlements of uncertain tax positions			5,700
State income taxes (benefit), net of federal tax benefit	(322)	2,510	1,104
State income taxes (benefit), net of federal tax benefit (impact of REIT election), net of valuation allowance	900	2,500	1,000
Valuation allowance	(17,069)	(13,368)
Increase in valuation allowance	3,702	664	(802)
Accumulated undistributed earnings invested	9,000
Additional taxes (net of foreign tax credits)	500
Foreign operating losses carry forward	48,000
State tax credits	2,900
Deferred tax asset net of valuation allowance	4,900
Unrecognized tax benefits, net	1,600
Decrease in unrecognized tax benefits	1,500
Recognized tax benefits that will reduce company's tax rate	1,700
Interest and penalties recognized		400	$ 700
Accrued income tax examination penalties and interest	$ 100	600
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards		145,900
Domestic Country
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards		$ 8,000