Discontinued Operations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member]	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member] Land [Member]	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member] Building [Member]	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member] Intangible Lease Assets [Member]	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member] Accumulated Depreciation [Member]	Dec. 31, 2013 Allowance for Doubtful Accounts, Discontinued Operations [Member] Accumulated Amortization [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate held for sale	$ 25,537	$ 25,500	$ 1,900	$ 26,700	$ 800	$ 3,500	$ 400