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Schedule II - Valuation and Qualifying Accounts and Reserves - Valuation Allowances and Reserves (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for Insurance and Claims Accruals [Member] |  |  |  |
Balance at Beginning of Year |  | $ 26,177 | $ 19,440 | $ 16,235
Charged to Costs and Expenses |  | 56,122 | 53,609 | 49,614
Deductions | [1] | (54,196) | (46,872) | (46,409)
Balance at End of Year |  | 28,103 | 26,177 | 19,440
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |  |
Balance at Beginning of Year |  | 300 | 275 | 305
Charged to Costs and Expenses |  | 163 | 33 | 88
Deductions | [2] | (115) | (8) | (118)
Balance at End of Year |  | $ 348 | $ 300 | $ 275
[1] | Claims payments
[2] | Write-off of bad debts, net of recoveries

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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