|
Shareholders' Equity - Additional Information (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 70 Months Ended | ||
|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2013
|
Oct. 31, 2011
|
Mar. 31, 2007
|
|
| Capital Unit [Line Items] | ||||
| Shares authorized for repurchase | 2,500,000 | |||
| Shares authorized for additional repurchase | 5,000,000 | |||
| Shares repurchased, shares | 3,086,363 | |||
| Shares repurchased, value | $ 4,810 | |||
| Options forfeited | 100,000 | |||
| Unrecognized compensation cost for stock based compensation | 12,193 | 12,193 | ||
| Unrecognized compensation cost for stock based compensation, period of recognition | 2 years 7 months 6 days | |||
| Stock options exercise | 4,500 | |||
| Intrinsic value of options exercised | 4 | |||
| Warrant exercise | 260,000 | |||
| Intrinsic value of warrant exercised | 169 | |||
|
Awards Granted during Twenty Twelve
|
||||
| Capital Unit [Line Items] | ||||
| Unrecognized compensation cost for stock based compensation | $ 1,497 | $ 1,497 | ||
| Unrecognized compensation cost for stock based compensation, period of recognition | 3 years 8 months 12 days |
| X | ||||||||||
|
- Definition
Class of Warrant or Right, Exercises in Period No definition available.
|
| X | ||||||||||
|
- Definition
Class of Warrant or Right, Exercises in Period, Total Intrinsic Value No definition available.
|
| X | ||||||||||
|
- Definition
Stock Repurchase Program Number Of Additional Shares Authorized To Be Repurchased No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- Definition
The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
|