Statutory Reserves (Detail) - Subsidiaries [Member] - China [Member] $ in Millions |
9 Months Ended |
|---|---|
|
Jan. 29, 2017
USD ($)
| |
| Statutory Reserve [Line Items] | |
| Percentage of net income required to be transferred to a statutory surplus reserve fund | 10.00% |
| Maximum required percentage of statutory surplus reserve fund to registered capital | 50.00% |
| Statutory surplus reserve fund balance | $ 4.5 |
| Percentage of accumulated earnings and profits determined in accordance with PRC accounting rules and regulations | 10.00% |
| Minimum threshold percentage for statutory surplus reserve fund as percentage of registered capital, below which certain capital transactions are prohibited | 25.00% |