Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Jun. 27, 2015 USD ($) Segment	Jun. 28, 2014 USD ($)	Jun. 29, 2013 USD ($)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of reporting segments | Segment	2
Quarterly period end period
Quarterly period end period, next year
Maturity of liquid investments purchased
Cash held in banks in the United States exceeding federally insured limits	$ 5,900
Foreign bank balances outside United States	14,300	$ 23,500
Restricted cash	17,252	15,570
Foreign restricted cash balances	$ 5,200	5,600
Revenue recorded under percentage of completion accounting method	80.00%
Period of product warranty
Amortization of debt issuance	$ 200	300	$ 200
Loss on extinguishment of debt			291
Shipping and handling costs incurred	2,100	1,700	1,400
Advertising costs	100	100	200
Design, research and development costs	$ 1,000	$ 1,100	$ 700
Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Accounts receivables due date	30 days
Peerless Propulsys [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Equity method investment, ownership percentage	60.00%
Equity investment entitles to earnings	80.00%