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Shareholders' Equity - Secondary Offering (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2016 | Sep. 30, 2015
Class of Stock [Line Items] |  |  |
Stock issuance expenses |  | $ 15,922 | $ 0
Secondary Offering |  |  |
Class of Stock [Line Items] |  |  |
Common shares issued by shareholder | 43.5 |  |
Pricer per share of shares issued by shareholders (in USD per share) | $ 21.75 | $ 21.75 |
Stock issuance expenses | $ 200 |  |

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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