Note 11 - Employee Benefit Plans - Plan Assets Fair Value (Details) - Delaware Plan [Member] $ in Thousands	Oct. 03, 2015 USD ($)
Large Cap Equities [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets	$ 828
Large Cap Equities [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets
Large Cap Equities [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
Large Cap Equities [Member]
Plan assets	828
Mid Cap Equities [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets	169
Mid Cap Equities [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets
Mid Cap Equities [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
Mid Cap Equities [Member]
Plan assets	169
Small Cap Equities [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets	181
Small Cap Equities [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets
Small Cap Equities [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
Small Cap Equities [Member]
Plan assets	181
International Equities [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets	195
International Equities [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets
International Equities [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
International Equities [Member]
Plan assets	195
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets	820
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets
Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
Fixed Income Securities [Member]
Plan assets	820
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Plan assets
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Plan assets	8
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Plan assets
Cash and Cash Equivalents [Member]
Plan assets	8
Fair Value, Inputs, Level 1 [Member]
Plan assets	2,193
Fair Value, Inputs, Level 2 [Member]
Plan assets	8
Fair Value, Inputs, Level 3 [Member]
Plan assets
Plan assets	$ 2,201