Subsequent Event - Additional Information (Detail) (Sumitomo Credit Facility, USD $) In Millions, unless otherwise specified	1 Months Ended
Jul. 31, 2013
Sumitomo Credit Facility
Subsequent Event [Line Items]
Repayments of borrowings	$ 18.1

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

No definition available.