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v3.19.3.a.u2

Incentive and Deferred Compensation Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Annual Incentive Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Accrued bonuses |  | $ 2.7 |  |
Payments to employees | $ 7.1 |  |  |
Minimum | Annual Incentive Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Incentive plans, payout percentages of target values |  | 0.00% |  |
Maximum | Annual Incentive Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Incentive plans, payout percentages of target values |  | 200.00% |  |
Other Postretirement Benefits Plan |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |
Retirement plan, employer matching contribution, percent of match |  | 100.00% | 100.00% | 100.00%
Retirement plan, employer matching contribution, percent of employees' gross pay (up to) |  | 10.00% | 10.00% | 10.00%
Retirement plan, cost recognized |  | $ 2.2 | $ 2.8 | $ 3.6
Percent of employee contributions vesting immediately |  | 100.00% | 100.00% | 100.00%
Retirement plan, employer matching contribution, vesting period |  | 4 years | 4 years | 4 years

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- Definition Incentive plan payout percentages of target values based on performance above a minimum threshold + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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