Bank Indebtedness and Long-Term Debt (Long term debt table) (Details) - USD ($) $ in Thousands	Oct. 03, 2015	Jan. 03, 2015
Debt Instrument [Line Items]
Capital Lease Obligations	$ 3,824	$ 4,965
Other Long-term Debt	114	257
Total Long-term and Current Term Debt	31,452	39,855
Current portion of long-term debt	28,622	5,927
Long-term Debt, Excluding Current Maturities, Total	2,830	33,928
Non Revolving Term Credit Facility [Member] | Opta Minerals Inc [Member]
Debt Instrument [Line Items]
Secured Debt	$ 27,514	$ 34,633