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Shareholder's Equity - Additional Information (Detail) (USD $)
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12 Months Ended | 1 Months Ended | |||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Oct. 31, 2011
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Mar. 31, 2007
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Nov. 30, 2011
Securities America Acquisition [Member]
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Apr. 30, 2010
Former Employees [Member]
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Apr. 30, 2010
Former Employees [Member]
Reduced Exercise Price [Member]
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Apr. 30, 2009
Stock Repurchase Price [Member]
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| Capital Unit [Line Items] | |||||||||
| Shares authorized for repurchase | 2,500,000 | ||||||||
| Shares authorized for additional repurchase | 5,000,000 | ||||||||
| Shares repurchased, shares | 2,981,967 | ||||||||
| Shares repurchased, value | $ 4,653,000 | ||||||||
| Share Price | $ 1.68 | $ 0.68 | |||||||
| Number of Shares | 17,122,332,000 | 10,713,332,000 | 2,300,000,000 | ||||||
| Exercise Price | 0.96 | ||||||||
| Non-cash compensation expense | $ 4,744,000 | $ 4,014,000 | $ 5,439,000 | $ 243,000 | |||||
| X | ||||||||||
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- Definition
Stock Repurchase Program Number Of Additional Shares Authorized To Be Repurchased No definition available.
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- Details
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- Definition
The exercise price of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Price of a single share of a number of saleable stocks of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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- Definition
Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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