Acquisition Purchase Price Allocation (Details) (USD $) In Thousands, unless otherwise specified				12 Months Ended		0 Months Ended		0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2013 Minimum	Sep. 30, 2013 Maximum	Oct. 31, 2012 Etherios, Inc	Oct. 31, 2012 Existing Customer Relationships Etherios, Inc	Oct. 31, 2012 Existing Customer Relationships Etherios, Inc Minimum	Oct. 31, 2012 Existing Customer Relationships Etherios, Inc Maximum	Oct. 31, 2012 Non-compete Agreements Etherios, Inc	Oct. 31, 2012 Trade Name Etherios, Inc	Oct. 31, 2012 Order Backlog Etherios, Inc
Business Acquisition [Line Items]
Cash, including cash in escrow						$ 13,696
Common stock						6,741
Total						20,437
Fair value of net tangible assets acquired						1,142
Identifiable intangible assets							1,400			1,100	440	360
Goodwill	103,569	86,209	86,012			17,282
Deferred tax liabilities related to identifiable intangibles						(1,287)
Total						$ 20,437
Weighted Average Useful Life						5 years 8 months 12 days
Estimated useful life				3 years	13 years			6 years	8 years	5 years	7 years	1 year