Receivables - Additional Information (Detail) (USD $)	3 Months Ended
Mar. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan secured by real estate	$ 31,963,000	$ 39,278,000
Due period of notes receivable as secured by deed of trust	3 years
Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan secured by real estate	6,172,000	7,610,000
Interest accrue percentage till year three	9.00%
Interest accrue percentage year four	10.00%
Interest accrue percentage year five	12.00%
Forgiven interest rate	6.25%
Principal amount of loan received	3,394,000
Interest amount of loan received	216,000
Outstanding principal balance	$ 12,305,000
Due period of notes receivable as secured by deed of trust	3 years

Accounts and notes receivable gross.

No definition available.

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- Definition

Due period of notes receivable as secured by a deed of trust.

+ References

No definition available.

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- Definition

Interest accrue percentage till year three.

+ References

No definition available.

+ Details

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- Definition

Interest accrue percentage year five.

+ References

No definition available.

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- Definition

Interest accrue percentage year four.

+ References

No definition available.

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- Definition

Interest forgiven over interest rate stated percentage for prepaid loan.

+ References

No definition available.

+ Details

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- Definition

Loan Secured By Real Estate Principal Amount Received

+ References

No definition available.

+ Details

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- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Interest received on loans and other debt instruments during the current period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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