Derivative Instruments - Additional Information (Detail) In Millions, unless otherwise specified			3 Months Ended
Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Sep. 30, 2013 Minimum JPY (¥)	Sep. 30, 2013 Maximum JPY (¥)
Derivative [Line Items]
Foreign currency forward exchange contracts, notional amount	$ 7.3	$ 4.7
Foreign currency forward exchange contracts maturity amount			¥ 170	¥ 200

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant