SEGMENTS (Details)	12 Months Ended
Dec. 31, 2012 item
Segments reporting
Number of residential condominium projects located in Natick (Boston), Massachusetts	215
Number of reportable segments	3
Strategic Developments
Segments reporting
Number of residential condominium projects located in Natick (Boston), Massachusetts	1
The Woodlands \| Master Planned Communities
Segments reporting
Ownership percentage	100.00%

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration