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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2014
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, 2014 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 715 |  |  | $ | 2,006 |  |  | $ | (874 | ) |  | $ | 1,847 |
Year ended December 31, 2013 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 923 |  |  | $ | (448 | ) |  | $ | 240 |  |  | $ | 715 |
Year ended December 31, 2012 |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,652 |  |  | $ | 498 |  |  | $ | (1,227 | ) |  | $ | 923 |

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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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