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Share-Based Compensation - Narrative (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 24, 2016 | May 22, 2007 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock authorized to be issued under plan (in shares) | 3,800,000.0 |  |  |  |
Unrecognized pre-tax compensation cost |  |  | $ 8,500 |  |
Weighted average recognition period (in years) |  |  | 2 years 7 months 10 days |  |
Total intrinsic value of options exercised during period |  |  | $ 4,900 | $ 7,400 | $ 2,800
Cash received from options exercised during period |  |  | 2,100 | 2,800 | $ 1,300
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 | Retained Earnings |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | $ 150 |
2007 Long-Term Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock authorized to be issued under plan (in shares) | 400,000.0 | 3,300,000.0 |  |  |
Exercise price of shares granted may not be less than fair market value (percentage) |  | 100.00% |  |  |
2007 Long-Term Incentive Plan | Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized pre-tax compensation cost |  |  | $ 6,500 |  |
Weighted average recognition period (in years) |  |  | 1 year 10 months 25 days |  |
Annual vesting, percentage |  |  | 20.00% |  |
2016 Long-Term Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock authorized to be issued under plan (in shares) | 3,400,000.0 |  |  |  |
Exercise price of shares granted may not be less than fair market value (percentage) | 100.00% |  |  |  |

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- Definition The exercise price of granted shares may not be below this percentage of fair market value under the terms of the stock option plans. + References No definition available. + Details
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- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
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- Definition Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. + 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 (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- 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. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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