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Valuation and Qualifying Accounts and Reserves | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts and Reserves | VALUATION AND QUALIFYING ACCOUNTS AND RESERVES Years ended December 31, 2017, 2016 and 2015 (in thousands)
Description | 2017 |  | 2016 |  | 2015
Allowance for doubtful accounts: |  |  |  |  |
Balance, beginning of period | $ | 200 |  |  | 200 |  |  | 150 |
Charged to expense | 399 |  |  | 504 |  |  | 392 |
Accounts written off | (675 | ) |  | (681 | ) |  | (528 | )
Recoveries of accounts written off | 266 |  |  | 177 |  |  | 186 |
Balance, end of period | $ | 190 |  |  | 200 |  |  | 200 |
Reserve for litigation and claims: |  |  |  |  |
Balance, beginning of period | $ | 2,105 |  |  | 263 |  |  | 133 |
Charged to expense | 528 |  |  | 2,186 |  |  | 213 |
Revision to accrual, due to settlements | (245 | ) |  | (19 | ) |  | (16 | )
Payments | (496 | ) |  | (325 | ) |  | (67 | )
Balance, end of period | $ | 1,892 |  |  | 2,105 |  |  | 263 |

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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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