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Stock-Based Compensation and Awards - Stock Options (Narratives) (Details 3) - Stock Options - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Stock-based compensation |  |  |
Weighted average grant date fair value (in dollars per share) |  | $ 14.47 | $ 10.19
First anniversary vesting |  |  |
Stock-based compensation |  |  |
Expiration period | 1 year |  |
Vesting percentage | 33.33% |  |
Second anniversary vesting |  |  |
Stock-based compensation |  |  |
Expiration period | 2 years |  |
Vesting percentage | 33.33% |  |
Third anniversary vesting |  |  |
Stock-based compensation |  |  |
Expiration period | 3 years |  |
Vesting percentage | 33.33% |  |
Maximum |  |  |
Stock-based compensation |  |  |
Expiration period | 7 years |  |

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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