CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 01, 2017	Dec. 27, 2015	Jan. 01, 2017	Dec. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (907)	$ 268	$ (799)	$ 2,662
Other comprehensive income, net:
Pension amortization of unrecognized net actuarial loss, net of tax	55	40	90	47
Unrecognized loss on marketable equity securities, net of tax	0	(102)	0	(173)
Other comprehensive income (loss), net	55	(62)	90	(126)
Comprehensive income (loss)	$ (852)	$ 206	$ (709)	$ 2,536