Shareholders' Equity (Repurchase Program and Warrants) (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | 106 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Aug. 15, 2013 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2015 |
Nov. 30, 2014 |
Oct. 31, 2011 |
Mar. 31, 2007 |
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| Class of Stock [Line Items] | ||||||||
| Warrant exercise | 646,000 | 13,333 | ||||||
| Exercise of stock options, shares tendered in payment of exercise price | 196,518 | 43,535 | 224,601 | |||||
| Intrinsic value of warrant exercised | $ 966 | $ 23 | $ 2,526 | |||||
| Common Stock | ||||||||
| Class of Stock [Line Items] | ||||||||
| Shares authorized for repurchase | 2,500,000 | |||||||
| Shares authorized for additional repurchase | 10,000,000 | 5,000,000 | ||||||
| Shares repurchased, shares | 3,000,000 | 5,673,415 | 2,846,395 | 12,269,567 | ||||
| Shares repurchased, value | $ 5,010 | $ 16,355 | $ 9,535 | $ 31,979 | ||||
| Cost per share | $ 1.67 | |||||||
| Exercise of warrants (in shares) | 449,482 | 13,333 | 1,002,065 | |||||
| X | ||||||||||
- Definition Class of Warrant or Right, Exercises in Period No definition available.
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- Definition Class of Warrant or Right, Exercises in Period, Total Intrinsic Value No definition available.
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- Definition Number of shares issued during the period as a result of the exercise of warrants. No definition available.
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- Definition Stock Repurchase Program Number Of Additional Shares Authorized To Be Repurchased No definition available.
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- Definition Stock Tendered During Period, Shares No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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 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 Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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