Lines of Credit and Long-Term Debt Lines of Credit and Long-Term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 120,000
Line of Credit Facility Increase in Additional Borrowings	$ 25,000
Debt, Weighted Average Interest Rate	4.00%	3.80%	3.80%
debt instrument, minimum credit availabilty requirement amount	$ 7,000
debt instrument, minimum credit availability requirement percentage	10.00%
Line of Credit Facility, Current Borrowing Capacity	$ 104,300	$ 105,300
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	181	377
Letters of Credit Outstanding, Amount	4,200	4,800
Short-term Debt, Maximum Amount Outstanding During Period	$ 346	$ 238
Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate, for Prime Rate	0.50%
Debt Instrument, Basis Spread on Variable Rate, for LIBOR	1.50%
Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate, for Prime Rate	1.00%
Debt Instrument, Basis Spread on Variable Rate, for LIBOR	2.00%