Marketable Securities (Details 2) $ in Thousands	Nov. 28, 2015 USD ($)
Marketable Securities [Abstract]
Amortized Cost, Due within one year	$ 30,601
Amortized Cost, Due after one year through five years	2,948
Amortized Cost, Due after five years through 10 years	6,829
Amortized Cost, Due after 10 years through 15 years	1,250
Amortized Cost, Total	41,628
Estimated Market Value, Due within one year	30,602
Estimated Market Value, Due after one year through five years	2,966
Estimated Market Value, Due after five years through 10 years	6,922
Estimated Market Value, Due after 10 years through 15 years	1,134
Estimated Market Value, Total	$ 41,624