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Schedule II Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2018
Valuation And Qualifying Accounts [Abstract] |
Schedule II Valuation and Qualifying Accounts | Schedule II Valuation and Qualifying Accounts For the Years Ended December 31, 2018, 2017 and 2016 (In thousands)
Description |  | Balance at Beginning of Period |  |  | Additions Charged to Costs and Expenses |  |  | Write-offs |  |  | Recoveries |  |  | Balance at End of Period |
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 2,616 |  |  | $ | 4,391 |  |  | $ | (3,383 | ) |  | $ | 817 |  |  | $ | 4,441 |
2017 |  |  | 3,527 |  |  |  | 2,452 |  |  |  | (4,037 | ) |  |  | 674 |  |  |  | 2,616 |
2016 |  |  | 2,310 |  |  |  | 4,632 |  |  |  | (3,935 | ) |  |  | 520 |  |  |  | 3,527 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: 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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- References No definition available. + Details
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