Marketable Securities (Details 2) $ in Thousands	Dec. 02, 2017 USD ($)
Amortized Cost
Due within one year	$ 482
Due after one year through five years	4,418
Due after five years through 10 years	4,627
Due after 10 years through 15 years	141
Due beyond 15 years	666
Total	10,334
Estimated Fair Value
Due within one year	482
Due after one year through five years	4,385
Due after five years through 10 years	4,578
Due after 10 years through 15 years	141
Due beyond 15 years	662
Total	$ 10,248