Debt (Narrative) (Details) - USD ($)		3 Months Ended
	Apr. 03, 2016	Apr. 30, 2017	Jul. 01, 2017	Jun. 08, 2017	Mar. 13, 2017	Oct. 26, 2016
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End		4.50%
Company restriction from issuing dividends or making payments with respect to the Company's Capital Stock to it's annual limit		$ 1,300,000
Provision to reduce borrowings under the line		$ 6,000,000
Provision to reduce borrowings under the line, period	60 days	30 days
PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity		$ 13,375,000
PNC [Member] | Revolving Credit Facility [Member] | Amendment No. 7 To The Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		49,500,000				$ 49,750,000
Line of Credit Facility, Capacity Available for Equipment Financing		$ 2,500,000			$ 2,500,000
Eurodollar [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of		1.50%
Eurodollar [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of		2.50%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of		0.50%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of		1.50%
Subsequent Event [Member] | PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity				$ 14,000,000
Subsequent Event [Member] | PNC [Member] | Revolving Credit Facility [Member] | Amendment No. 7 To The Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Capacity Available for Equipment Financing				$ 2,500,000
Scenario, Forecast [Member] | PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity			$ 11,000,000