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Other assets | 12 Months Ended
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Dec. 31, 2011
Other assets |
| 10. | Other assets
As of December 31, 2011 and 2010, other assets include an equity investment in a private investment fund with a carrying value of $1.4 million and $1.7 million, respectively. During 2011, the Bank did not increase its participation in this fund.

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- Definition The entire disclosure for other assets. + References No definition available. + Details
Name: | us-gaap_OtherAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration