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Basis of Reporting - Additional Information (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
ACAC
|
Aug. 31, 2011
ACAC
|
Sep. 30, 2012
Tiger and AMT Alpha
|
Sep. 30, 2012
Tiger and AMT Alpha
ACAC
|
Sep. 30, 2011
Restatement Adjustment
Majestic
|
Sep. 30, 2011
Restatement Adjustment
Majestic
|
|
| Subsidiary of Limited Liability Company or Limited Partnership [Line Items] | ||||||||||
| Retrospective gain, pretax | $ 3,185 | $ 3,185 | ||||||||
| Retrospective gain, after tax | 2,070 | 2,070 | ||||||||
| Impact on diluted earnings per share in both periods | $ 0.03 | $ 0.03 | ||||||||
| Percentage of stock dividend paid | 10.00% | |||||||||
| Impact of dividends declared on earnings per share | $ (0.02) | $ (0.02) | ||||||||
| Percentage of 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 | |||||||||