Shareholders' Equity - Schedule of Common Shares (Details) - shares |
12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|
Mar. 05, 2015 |
Feb. 19, 2015 |
Jan. 01, 2015 |
Feb. 19, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||
| Issued and outstanding shares – January 1 (in shares) | 72,932,702 | 72,932,702 | 72,633,561 | 72,343,947 | |||
| Issuance of vested restricted shares and restricted share units (in shares) | 378,120 | 184,396 | 0 | ||||
| Shares repurchased (in shares) | (33,846) | (7,658) | (4,954) | (5,851) | (46,458) | (5,851) | 0 |
| Exercise of options (in shares) | 456,776 | 120,596 | 289,614 | ||||
| Issued and outstanding shares – December 31 (in shares) | 73,721,140 | 72,932,702 | 72,633,561 | ||||
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of share options (or share units) exercised during the current period. 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 are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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