Employee Retirement Plans - Multiemployer plans (Details) - NCT - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Employee Retirement Plans | |||
| Contribution to NCT (as a percent of total plan contribution) | 1.00% | ||
| Contributions by employer | $ 3,319 | $ 2,319 | $ 1,926 |
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- Definition Percentage of Multiemployer plan contributions to NCT to the total contributions to the plan. No definition available.
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- Definition Amount of contributions made to multiemployer plan by employer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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