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Valuation and Qualifying Accounts | 12 Months Ended
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Jun. 30, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | Matrix Service Company Schedule II—Valuation and Qualifying Accounts June 30, 2018, June 30, 2017, and June 30, 2016 (In thousands)
COL. A |  | COL. B |  | COL. C ADDITIONS |  | COL. D |  |  | COL. E
|  | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Charged to Other Accounts—Describe |  | Deductions—Describe |  |  | Balance at End of Period
Fiscal Year 2018 |  |  |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 9,887 |  |  | $ | 107 |  |  | $ | — |  |  | $ | (3,667 | ) | (A) |  | $ | 6,327 |
Valuation reserve for deferred tax assets |  | 1,719 |  |  | 1,020 |  |  | — |  |  | (1,101 | ) | (B) |  | 1,638 |
Total |  | $ | 11,606 |  |  | $ | 1,127 |  |  | $ | — |  |  | $ | (4,768 | ) |  |  | $ | 7,965 |
Fiscal Year 2017 |  |  |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 8,403 |  |  | $ | 1,748 |  |  | $ | — |  |  | $ | (264 | ) | (C) |  | $ | 9,887 |
Valuation reserve for deferred tax assets |  | 424 |  |  | 1,295 |  |  | — |  |  | — |  |  |  | 1,719 |
Total |  | $ | 8,827 |  |  | $ | 3,043 |  |  | $ | — |  |  | $ | (264 | ) |  |  | $ | 11,606 |
Fiscal Year 2016 |  |  |  |  |  |  |  |  |  |  |
Deducted from asset accounts: |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 561 |  |  | $ | 6,065 |  |  | $ | 1,808 |  | (D) | $ | (31 | ) | (E) |  | $ | 8,403 |
Valuation reserve for deferred tax assets |  | 115 |  |  | 311 |  |  | — |  |  | (2 | ) |  |  | 424 |
Total |  | $ | 676 |  |  | $ | 6,376 |  |  | $ | 1,808 |  |  | $ | (33 | ) |  |  | $ | 8,827 |
(A) | Relates to the reversal of reserved account receivable that was fully settled with cash and future backlog. See Note 4 - Goodwill and Other Intangible Assets for more information about the settlement.
(B) | Relates to $795 of stock-based compensation expense recognized in fiscal 2018 that was not deductible for tax purposes due to not meeting a market condition vesting requirement and to $306 of foreign tax credits that expired.
(C) | Relates to a $180 receivable written off against allowance for doubtful accounts, a $60 reclassification of reserves to billings on uncompleted contracts in excess of costs and estimated earnings and a $24 currency translation adjustment.
(D) | Relates to a reclassification of reserves that were initially recorded in billings on uncompleted contracts in excess of costs and estimated earnings.
(E) | Receivables written off against allowance for doubtful accounts.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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