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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2014
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS |
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS For the Years Ended December 31, 2014, 2013 and 2012 (Dollars in thousands)
Description |  | Balance at Beginning of Year |  | Additions Charged to Costs and Expenses |  | Deductions |  | Balance at End of Year |
Year Ended December 31, 2014: |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for inventory obsolescence |  | $ | 10,138 |  |  | 1,450 |  |  | — |  | $ | 11,588 |
Allowance for doubtful accounts receivable |  |  | 94 |  |  | — |  |  | 232 |  |  | 326 |
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|  |  | 10,232 |  |  | 1,450 |  |  | 232 |  | $ | 11,914 |
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Year Ended December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for inventory obsolescence |  | $ | 9,189 |  |  | 949 |  |  | — |  | $ | 10,138 |
Allowance for doubtful accounts receivable |  |  | 94 |  |  | — |  |  | — |  |  | 94 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 9,283 |  |  | 949 |  |  | — |  |  | 10,232 |
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Year Ended December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for inventory obsolescence |  | $ | 8,248 |  |  | 941 |  |  | — |  | $ | 9,189 |
Allowance for doubtful accounts receivable |  |  | 240 |  |  | — |  |  | (146 | ) |  | 94 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 8,488 |  |  | 941 |  |  | (146 | ) | $ | 9,283 |
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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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