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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | Schedule II—Valuation and Qualifying Accounts (amounts in thousands)
Description |  | Balance At Beginning of Year |  | Additions Charged Against Operations |  | Uncollectible Accounts Written-Off |  | Balance at End of Year
Year ended December 31, 2018 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,607 |  |  | $ | (811 | ) |  | $ | (289 | ) |  | $ | 507 |
Year ended December 31, 2017 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 3,723 |  |  | $ | (1,650 | ) |  | $ | (466 | ) |  | $ | 1,607 |
Year ended December 31, 2016 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 3,037 |  |  | $ | 908 |  |  | $ | (222 | ) |  | $ | 3,723 |

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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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