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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES | 12 Months Ended
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Dec. 31, 2017
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES |
SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS AND RESERVES | SCHEDULE II UTSTARCOM HOLDINGS CORP. VALUATION AND QUALIFYING ACCOUNTS AND RESERVES For the Years Ended December 31, 2017, 2016, and 2015
Description |  | Balance at beginning of the period |  | Charged (credited) to costs and expenses |  | Credited to other accounts |  | (Deductions) Adjustments (1) |  | Balance at end of the period |
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 2,339 |  | $ | (56 | ) | $ | 154 |  | $ | — |  | $ | 2,437 |
Tax valuation allowance |  | $ | 329,523 |  | $ | 6,162 |  | $ | — |  | $ | (99,353 | ) | $ | 236,332 |
Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 4,564 |  | $ | 1,564 |  | $ | — |  | $ | (3,789 | ) | $ | 2,339 |
Tax valuation allowance |  | $ | 328,397 |  | $ | (3,016 | ) | $ | 4,142 |  | $ | — |  | $ | 329,523 |
Year ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 10,877 |  | $ | 103 |  | $ | — |  | $ | (6,416 | ) | $ | 4,564 |
Tax valuation allowance |  | $ | 368,672 |  | $ | (11,090 | ) | $ | (29,185 | )(2) | $ | — |  | $ | 328,397 |
| (1) |  | Represents write-offs of allowance for doubtful accounts and foreign exchange adjustments.
| (2) |  | Includes $3 million removal of tax valuation allowance for expiration of net operating loss carryforwards in China and $27 million for utilization of foreign tax credits in US.

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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 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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