Schedule IV - Mortgage Loans on Real Estate - Reconciliation of Mortgage Loans (Detail) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2014	Jul. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Mortgage Loans on Real Estate [Abstract]
Beginning balance		$ 101,100	$ 24,005	$ 101,100	$ 211,250
Purchase and advances				35,992	22,314
Interest received, net			(190)	(283)	(514)
Repayments / Sale Proceeds			(18,535)	(120,194)	(75,407)
Loan accretion		2,086		2,086	4,121
Discount accretion received in cash		(5,865)		(5,865)	(37)
Liquidation adjustment				6,071
Change in liquidation value	$ 5,098		(410)	5,098
Elimination of 1515 Market Street in consolidation					(60,279)
Provision for loss on loans receivable		$ 0			(348)
Ending balance	$ 24,005		$ 5,280	$ 24,005	$ 101,100