Real Estate and Lending Activities - Assets Acquired (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Business Acquisition [Line Items]
Total assets acquired	$ 109,991	$ 562,633
Loans repaid		(183,826)
Total net assets acquired	109,991	378,807
Land and Land Improvements [Member]
Business Acquisition [Line Items]
Total assets acquired	9,398	62,434
Building [Member]
Business Acquisition [Line Items]
Total assets acquired	37,593	390,320
Intangible Lease Assets - Subject to Amortization [Member]
Business Acquisition [Line Items]
Total assets acquired		42,262
Net Investments in Direct Financing Leases [Member]
Business Acquisition [Line Items]
Total assets acquired	$ 63,000	10,700
Other Loans [Member]
Business Acquisition [Line Items]
Total assets acquired		16,917
Mortgage Loans [Member]
Business Acquisition [Line Items]
Total assets acquired		$ 40,000