Subsequent Event (Details) $ in Thousands				3 Months Ended
	May. 06, 2016 USD ($)	May. 04, 2016 USD ($)	Apr. 18, 2016 USD ($) property	Mar. 31, 2016 USD ($) property	Mar. 31, 2015 USD ($)
Subsequent Event [Line Items]
Payment of debt				$ 11,185	$ 2,463
Disposal Group, Not Discontinued Operations | Eleven | Austin, Texas
Subsequent Event [Line Items]
Number of units of multifamily project | property				257
Disposal Group, Not Discontinued Operations | Eleven | Austin, Texas | Subsequent Event
Subsequent Event [Line Items]
Number of units of multifamily project | property			257
Purchase price of properties sold			$ 60,150
Net proceeds			35,150
Payment of debt			$ 23,936
Disposal Group, Not Discontinued Operations | Radisson Hotel & Suites, Austin | Austin, Texas | Subsequent Event
Subsequent Event [Line Items]
Purchase price of properties sold		$ 130,000
Net proceeds		112,000
Payment of debt		$ 15,400
Disposal Group, Not Discontinued Operations | Bakken/Three Forks Oil and Gas Properties | Subsequent Event
Subsequent Event [Line Items]
Purchase price of properties sold	$ 50,000
Net proceeds	$ 46,525