Commitments and Contingencies (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended				12 Months Ended
	Jun. 30, 2012 item	Sep. 30, 2012 Bay Holdings	Sep. 30, 2011 Bay Holdings	Sep. 30, 2012 Bay Holdings	Sep. 30, 2011 Bay Holdings	Sep. 30, 2012 Amenities	Sep. 30, 2012 Amenities Kapalua Bay	Dec. 31, 2011 Amenities Kapalua Bay	Dec. 31, 2010 Amenities Kapalua Bay Bay Holdings	Sep. 30, 2012 Settlement agreement with County of Maui
Commitments and Contingencies
Percentage of capital costs to install filtration systems in water wells if the presence of DBCP exceeds specified levels, and for the ongoing maintenance and operating cost for filtration systems										90.00%
Liability recorded for estimated share of cost to operate and maintain the filtration systems for the existing wells, and share of the cost of a letter of credit used to secure obligations										$ 105,000
Purchase of amenities at actual construction cost						35,000,000	35,000,000
Impairment charges									23,000,000
Loss from the operations of the amenities		$ (17,645,000)	$ (9,674,000)	$ (38,208,000)	$ (22,811,000)		$ (394,000)	$ (432,000)
Number of whole-ownership units owned by group of owners who filed lawsuit against multiple parties	10