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Schedule II - Valuation and Qualifying Accounts and Reserves | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts and Reserves | Schedule II — Valuation and Qualifying Accounts and Reserves
|  |  | Additions |  |  |  |
Description | Beginning Balance |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  | Deductions |  | Ending Balance
(in thousands)
2017 |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 6,911 |  |  | $ | 6,250 |  |  | $ | — |  |  | $ | 1,176 |  |  | $ | 11,985 |
2016 |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 4,608 |  |  | $ | 4,629 |  |  | $ | — |  |  | $ | 2,326 |  |  | $ | 6,911 |
2015 |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts | $ | 6,136 |  |  | $ | 4,335 |  |  | $ | — |  |  | $ | 5,863 |  |  | $ | 4,608 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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