Intangible Assets and Goodwill (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortization expense	$ 700,000	$ 300,000	$ 1,400,000	$ 600,000
Goodwill impairment loss			$ 0