Restructuring Charge - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Employee termination benefits charge	$ 100,000
Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits charge	14,000
Research and Development Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits charge	16,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits charge	$ 70,000