Marketable Securities (Details 2) $ in Thousands	Nov. 26, 2016 USD ($)
Marketable Securities [Abstract]
Amortized Cost, Due within one year	$ 367
Amortized Cost, Due after one year through five years	4,166
Amortized Cost, Due after five years through 10 years	5,594
Amortized Cost, Due after 10 years through 15 years	1,292
Amortized Cost, Total	11,419
Estimated Market Value, Due within one year	366
Estimated Market Value, Due after one year through five years	4,164
Estimated Market Value, Due after five years through 10 years	5,606
Estimated Market Value, Due after 10 years through 15 years	1,192
Estimated Market Value, Total	$ 11,328