Real Estate and Lending Activities - Summary of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Loans [Line Items]
Loans Receivable Net	$ 532,511	$ 549,746
Mortgage loans [Member]
Loans [Line Items]
Loans Receivable Net	385,093	388,756
Acquisition loans [Member]
Loans [Line Items]
Loans Receivable Net	108,028	109,655
Working capital and other loans [Member]
Loans [Line Items]
Loans Receivable Net	36,038	47,983
Convertible loan [Member]
Loans [Line Items]
Loans Receivable Net	$ 3,352	$ 3,352

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant