RELATED PARTY TRANSACTIONS (Details Textual) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Percentage Of Annual Management Fee	0.50%
Percentage Of Permanent Financing	99.00%
Accrued Management Fees	$ 23,197,360	$ 23,715,718

Represents the percentage of permanent financing comprising the aggregate cost for calculation of partnership management fee during period.

No definition available.

Name:	bctciii_PercentageOfPermanentFinancing
Namespace Prefix:	bctciii_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration