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Stock Compensation - Restricted Stock and Performance Share Grants - Additional Information (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($) award_type
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Number of types of stock grant awards | award_type | 3
Total compensation cost not yet recognized | $ | $ 5,695
Total compensation cost not yet recognized, period for recognition | 21 months

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- Definition Share Based Compensation Arrangement by Share Based Payment Award, Number of Award Types + References No definition available. + Details
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- References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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