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Schedule of Valuation and Qualifying Accounts | 12 Months Ended
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Jun. 30, 2014
Schedule of Valuation and Qualifying Accounts | Schedule II MYRIAD GENETICS, INC. Schedule of Valuation and Qualifying Accounts Years Ended June 30, 2014, 2013, and 2012 (In thousands)
|  | Balance at Beginning of Period |  |  | Addition Charged to Cost and Expenses |  |  | Addition due to acquisition of Crescendo |  |  | Deductions (1) |  |  | Balance at End of Period |
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended June 30, 2014 |  | $ | 7,500 |  |  | $ | 39,235 |  |  |  | 868 |  |  | ($ | 38,635 | ) |  | $ | 8,968 |
Year ended June 30, 2013 |  | $ | 4,600 |  |  | $ | 33,294 |  |  |  | — |  |  | ($ | 30,394 | ) |  | $ | 7,500 |
Year ended June 30, 2012 |  | $ | 3,700 |  |  | $ | 24,742 |  |  |  | — |  |  | ($ | 23,842 | ) |  | $ | 4,600 |
(1) | Represents amounts written off against the allowance.

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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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