Subsequent Events - Additional Information (Detail) - $ / shares |
Jul. 18, 2017 |
Apr. 26, 2017 |
Jan. 31, 2017 |
|---|---|---|---|
| Subsequent Event [Line Items] | |||
| Dividend payable | $ 0.227 | $ 0.227 | |
| Subsequent Event | |||
| Subsequent Event [Line Items] | |||
| Dividend payable | $ 0.227 | ||
| Dividend payable date | Aug. 30, 2017 | ||
| Closing date of stockholders on record for dividend entitlement | Aug. 16, 2017 |