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Income Taxes (Tables) | 12 Months Ended
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Jul. 31, 2015
Income Taxes [Abstract] |
Schedule of Income (loss) from Continuing Operations Before Income Taxes |
Year ended July 31 (in thousands) |  | 2015 |  |  | 2014 |  |  | 2013 |
Domestic |  | $ | 7,538 |  |  | $ | 21,624 |  |  | $ | 44,355 |
Foreign |  |  | 84,665 |  |  |  | 3,368 |  |  |  | (10,405 | )
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  | $ | 92,203 |  |  | $ | 24,992 |  |  | $ | 33,950 |
Schedule of Deferred Income Tax Assets |
July 31 (in thousands) |  | 2015 |  |  | 2014 |
Deferred income tax assets: |  |  |  |  |  |
Bad debt reserve |  | $ | 550 |  |  | $ | 2,188 |
Accrued expenses |  |  | 4,629 |  |  |  | 2,937 |
Stock options and restricted stock |  |  | 1,030 |  |  |  | 2,131 |
Charitable contributions |  |  | 1,277 |  |  |  | 1,230 |
Impairment |  |  | 25,746 |  |  |  | 25,745 |
Depreciation |  |  | 7,232 |  |  |  | 7,566 |
Unrealized gain |  |  | 138 |  |  |  | 163 |
Net operating loss |  |  | 125,223 |  |  |  | 126,093 |
Credits |  |  | 2,892 |  |  |  | 3,123 |
Total deferred income tax assets |  |  | 168,717 |  |  |  | 171,176 |
Valuation allowance |  |  | (155,393 | ) |  |  | (151,975 | )
DEFERRED INCOME TAX ASSETS, NET |  | $ | 13,324 |  |  | $ | 19,201 |
Schedule of (Provision for) Benefit from Income Taxes |
Year ended July 31 (in thousands) |  | 2015 |  |  | 2014 |  |  | 2013 |
Current: |  |  |  |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | (279 | ) |  | $ | 671 |
State and local |  |  | — |  |  |  | — |  |  |  | 148 |
Foreign |  |  | (311 | ) |  |  | (1,177 | ) |  |  | (1,431 | )
|  |  | (311 | ) |  |  | (1,456 | ) |  |  | (612 | )
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (1,967 | ) |  |  | (6,461 | ) |  |  | (14,181 | )
State and local |  |  | (245 | ) |  |  | (175 | ) |  |  | (1,079 | )
Foreign |  |  | (3,565 | ) |  |  | 4,110 |  |  |  | — |
|  |  | (5,777 | ) |  |  | (2,526 | ) |  |  | (15,260 | )
PROVISION FOR INCOME TAXES |  | $ | (6,088 | ) |  | $ | (3,982 | ) |  | $ | (15,872 | )
Schedule of Statutory Income Tax Rate and Income Taxes Provided |
Year ended July 31 (in thousands) |  | 2015 |  |  | 2014 |  |  | 2013 |
U.S. federal income tax at statutory rate |  | $ | (32,271 | ) |  | $ | (8,747 | ) |  | $ | (11,883 | )
Valuation allowance |  |  | — |  |  |  | 4,110 |  |  |  | — |
Foreign tax rate differential |  |  | 25,757 |  |  |  | 961 |  |  |  | (5,073 | )
Nondeductible expenses |  |  | 659 |  |  |  | 761 |  |  |  | 714 |
Other |  |  | (73 | ) |  |  | 7 |  |  |  | 50 |
Prior year tax (expense) benefit |  |  | — |  |  |  | (960 | ) |  |  | 921 |
State and local income tax, net of federal benefit |  |  | (160 | ) |  |  | (114 | ) |  |  | (601 | )
PROVISION FOR INCOME TAXES |  | $ | (6,088 | ) |  | $ | (3,982 | ) |  | $ | (15,872 | )
Schedule of Change in Valuation Allowance |
Year ended July 31 (in thousands) |  | Balance at beginning of year |  |  | Additions charged to costs and expenses |  |  | Deductions |  |  | Balance at end of year |
2015 |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from deferred income taxes, net: |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 151,975 |  |  | $ | 3,418 |  |  | $ | — |  |  | $ | 155,393 |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from deferred income taxes, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 167,328 |  |  | $ | — |  |  | $ | (15,353 | ) |  | $ | 151,975 |
2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves deducted from deferred income taxes, net: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  | $ | 204,977 |  |  | $ | 462 |  |  | $ | (38,111 | ) |  | $ | 167,328 |
Summary of Change in Balance of Unrecognized Income Tax Benefits |
Year ended July 31 (in thousands) |  | 2015 |  |  | 2014 |  |  | 2013 |
Balance at beginning of year |  | $ | — |  |  | $ | 356 |  |  | $ | — |
Additions based on tax positions related to the current year |  |  | — |  |  |  | — |  |  |  | — |
Additions for tax positions of prior years |  |  | — |  |  |  | — |  |  |  | 356 |
Reductions for tax positions of prior years |  |  | — |  |  |  | — |  |  |  | — |
Settlements |  |  | — |  |  |  | (356 | ) |  |  | — |
Lapses of statutes of limitations |  |  | — |  |  |  | — |  |  |  | — |
Balance at end of year |  | $ | — |  |  | $ | — |  |  | $ | 356 |

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