Long Term Obligations (San Diego Lease) (Details) - San Diego Lease ft² in Thousands, $ in Millions		12 Months Ended
	Dec. 02, 2015 USD ($) ft²	Dec. 31, 2011
Area of real estate property (in square feet) | ft²	170
Length of lease	16 years
Average yearly aggregate rent | $	$ 10.2
Amount of optional renewal terms	2
Optional renewal term length		5 years