Condensed Combined Balance Sheets of Limited Liabilities Accounted for under Equity Method (Detail) - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Equity Method Investments And Joint Ventures [Abstract]
Net property, including CIP		$ 61,838	$ 61,668
Other assets		5,415	5,264
Total assets		67,253	66,932
Liabilities		2,657	2,538
Mortgage notes payable, non-recourse to us		28,763	28,895
Advances payable to us		22,280	22,489
Equity		13,553	13,010
Total liabilities and equity		67,253	66,932
Our share of equity in and advances to LLCs reflected as:
Investments in LLCs	[1]	14,555	9,108
Advances to LLCs		22,280	22,489
Subtotal-Investments in and advances to LLCs before amounts included in accrued expenses and other liabilities		36,835	31,597
Amounts included in accrued expenses and other liabilities		(1,311)	(1,105)
Our share of equity in and advances to LLCs, net		$ 35,524	$ 30,492

[1] As mentioned above, effective February 1, 2016, we purchased an additional 10% of the ownership interest in Arlington Medical Properties, LLC thereby increasing our ownership interest to 85%, from 75% in 2015.