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Valuation and Qualifying Accounts and Reserves (Notes) | 12 Months Ended
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Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts and Reserves | VALUATION AND QUALIFYING ACCOUNTS AND RESERVES Years ended December 31, 2014, 2013 and 2012 (in thousands)
Description | 2014 |  | 2013 |  | 2012
Allowance for doubtful accounts: |  |  |  |  |
Balance, beginning of period | $ | 170 |  |  | 225 |  |  | 225 |
Charged to expense | 321 |  |  | 442 |  |  | 449 |
Accounts written off | (489 | ) |  | (620 | ) |  | (526 | )
Recoveries of accounts written off | 148 |  |  | 123 |  |  | 77 |
Balance, end of period | $ | 150 |  |  | 170 |  |  | 225 |
Reserve for litigation and claims: |  |  |  |  |
Balance, beginning of period | $ | 136 |  |  | 281 |  |  | 240 |
Charged to expense | 71 |  |  | 220 |  |  | 118 |
Revision to accrual, due to settlements | (5 | ) |  | (105 | ) |  | (38 | )
Payments | (69 | ) |  | (260 | ) |  | (39 | )
Balance, end of period | $ | 133 |  |  | 136 |  |  | 281 |

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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 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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