Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jan. 31, 2016 |
Jan. 31, 2015 |
Jan. 31, 2016 |
Jan. 31, 2015 |
|
| Components and changes in accumulated other comprehensive (loss) income | ||||
| Balance | $ 406,633,000 | |||
| Other comprehensive loss | $ (7,199,000) | $ (5,609,000) | (8,026,000) | $ (7,500,000) |
| Balance | 427,452,000 | 427,452,000 | ||
| Foreign Currency Translation Adjustments | ||||
| Components and changes in accumulated other comprehensive (loss) income | ||||
| Balance | 397,000 | 7,661,000 | 1,224,000 | 9,552,000 |
| Other comprehensive loss | (7,199,000) | (5,609,000) | (8,026,000) | (7,500,000) |
| Balance | $ (6,802,000) | $ 2,052,000 | $ (6,802,000) | $ 2,052,000 |