Reconciliation of Beginning and Ending Fair-Value Measurements of Level Three Contingent Earnout Arrangement Related to Acquisition of LightWorks (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified			3 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2013 Fair Value, Inputs, Level 3
Business Acquisition, Contingent Consideration [Line Items]
Balance - beginning of period	$ 1,100	$ 3,300	$ 3,300
Payments			(2,200)
Changes in fair value
Balance - end of period	$ 1,100	$ 3,300	$ 1,100