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Asset Liquidation Investments and Other Investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Gross revenues			$ 5,026	$ 2,023
Gross profit			1,237	1,620
Income from continuing operations			1,227	1,717
Net income	$ 158	$ 157	$ 1,227	$ 1,717

X

- Definition

The amount of gross profit (loss) reported by an asset liquidation investment of the entity and attributable to the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	crbn_
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Period Type:	duration

X

- Definition

The amount of income (loss) from continuing operations before extraordinary items reported by an asset liquidation investment of the entity and attributable to the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	crbn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an asset liquidation investment of the entity and attributable to the Company.

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No definition available.

+ Details

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Namespace Prefix:	crbn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Company's proportionate share of Joint Ventures' net income (loss) reported in the consolidated statement of operations as Earnings (Loss) of Equity Accounted Asset Liquidation Investments.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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