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Basis of Reporting - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
6 Months Ended | ||||
|---|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2012
ACAC
|
Aug. 31, 2011
ACAC
|
Jun. 30, 2012
Tiger and AMT Alpha
|
Jun. 30, 2012
Tiger and AMT Alpha
ACAC
|
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| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | |||||
| Percentage Ownership interest | 21.25% | 21.25% | 50.00% | 50.00% | |
| Profits and losses of investment in life insurance policies and premium finance loans | 60.625% | ||||
| Income and losses attributable to indirect ownership as a component of Equity in Earnings of Unconsolidated Subsidiaries | 10.625% | ||||
| Decrease in Equity Investment in Subsidiary | $ 3,807 | ||||