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Schedule II Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts Disclosure |
(In thousands) | Balance at Beginning of Period |  | Provision for (Recovery of) Bad Debt |  | Deductions/ Write-Offs and Other Charges, Net |  | Balance at End of Period
Year Ended December 31, 2017 |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 6,064 |  |  | $ | 3,567 |  |  | $ | 60 |  |  | $ | 9,691 |
Year Ended December 31, 2016 |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 4,307 |  |  | $ | 1,924 |  |  | $ | (167 | ) |  | $ | 6,064 |
Year Ended December 31, 2015 |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 4,276 |  |  | $ | 1,705 |  |  | $ | (1,674 | ) |  | $ | 4,307 |

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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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