Receivables Secured by Property Tax Liens, Net - Aging Analysis of Receivables Secured by Tax Liens (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable Recorded Investment Aging[Line Items]
Receivables secured by tax liens	$ 198,065	$ 135,100
Property tax payment agreements receivable [Member]
Financing Receivable Recorded Investment Aging[Line Items]
Current	123,196	101,052
31-60 days past due	10,238	10,175
61-90 days past due	4,956	1,982
> 90 days past due	20,673	21,891
Tax lien transfer [Member]
Financing Receivable Recorded Investment Aging[Line Items]
Receivables secured by tax liens	159,063	135,100
Tax lien certificates [Member]
Financing Receivable Recorded Investment Aging[Line Items]
Receivables secured by tax liens	$ 39,002

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Property tax payment agreements receivable, net.

+ References

No definition available.

+ Details

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- Definition

Financing receivables that are less than 60 days past due but more than 29 days past due.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524

+ Details

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- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

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+ Details

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- Definition

Financing receivables that are current.

+ References

+ Details

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

+ References

+ Details

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