Segment Information - Schedule of Segment Results (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 30, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Revenue:
Revenue	$ 13,882	$ 14,114	$ 11,797	$ 14,402	$ 14,260	$ 15,121	$ 14,588	$ 13,571	$ 54,195	$ 57,540	$ 46,816
Operating income (loss):
Operating income (loss)									(4,820)	(347)	(10,376)
Operating expenses									(27,574)	(26,967)	(29,496)
Restructuring charges, net											(785)
Amortization of other intangible assets									(244)	(244)	(411)
Impairment of goodwill and other intangible assets											(1,708)
Interest income (expense), net									(46)	5	(37)
Other income										2	71
Currency exchange gain (loss)									(463)	350	(3)
Income (loss) before income taxes									(5,329)	10	(10,345)
Operating Segments [Member]
Operating income (loss):
Operating income (loss)									4,046	9,623	1,426
Segment Reconciling Items [Member]
Operating income (loss):
Operating expenses									(8,622)	(9,726)	(8,898)
Robotics [Member] | Operating Segments [Member]
Revenue:
Revenue									42,250	45,084	36,353
Operating income (loss):
Operating income (loss)									49	4,987	(2,389)
Services and Support [Member] | Operating Segments [Member]
Revenue:
Revenue									11,945	12,456	10,463
Operating income (loss):
Operating income (loss)									$ 3,997	$ 4,636	$ 3,815