| **RELATED PARTY TRANSACTIONS (Tables)**             | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| **Related Party Transactions [Abstract]**           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Schedule Of Gross Management Fee [Table Text Block] | The partnership management fees accrued for the quarters ended June 30, 2012 and 2011 are as follows:
 
2012

2011

Series 1

$   -

$  5,016

Series 2

-

5,418

Series 3

7,935

10,215

Series 4

-

5,367

Series 5

-

3,837

Series 6

      -

      -

$  7,935

$ 29,853                                                                                              |
| Schedule Of Management Fees Paid [Table Text Block] | The partnership management fees paid for the quarters ended June 30, 2012 and 2011 are as follows:
 
2012

2011

Series 1

$       -

$       -

Series 2

-

  5,418

Series 3

-

-

Series 4

-

   5,367

Series 5

-

3,837

Series 6

       -

       -

$   -

$  14,622 |

| X                                                                                                                                                                                                                                                                              |
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| - Definition
Tabular disclosure for gross management fee.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tabular disclosure for management fees paid.
+ References
No definition available.
+ Details**Name:**bctci_ScheduleOfManagementFeesPaidTableTextBlock**Namespace Prefix:**bctci_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |
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| - Details**Name:**us-gaap_RelatedPartyTransactionsAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |