Prepaid Expenses And Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Prepaid Expenses And Other Current Assets [Abstract]
Prepaid insurance	$ 1,475	$ 1,727
Other prepaid expenses	7,755	3,862
Federal income taxes receivable	12,787	7,080
Miscellaneous receivables, net	4,257	4,704
Deferred commissions	5,399	3,305
Deferred tax assets		9,674
Other current assets	5,604	4,583
Prepaid expenses and other current assets	$ 37,277	$ 34,935