CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - SUPPLEMENTAL - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Dec. 31, 2016	Dec. 26, 2015
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents	$ 24,625	$ 87,517	$ 34,091	$ 87,756
Restricted cash	905	909	398	586
Cash, cash equivalents, and restricted cash	25,530	88,426	$ 34,489	$ 88,342
SUPPLEMENTAL INFORMATION:
Interest paid	3,049	2,220
Income taxes paid	15,895	19,789
NON-CASH FINANCING ACTIVITIES:
Common stock issued under deferred compensation plans	$ 4,231	$ 3,375