Supporting Financial Information - Accounts Receivable (Details) (USD $)	3 Months Ended								12 Months Ended						12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Billed Receivables	Sep. 30, 2013 Billed Receivables	Sep. 30, 2014 Unbilled Receivables	Sep. 30, 2013 Unbilled Receivables	Sep. 30, 2008 DVA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 12,372,000				$ 11,943,000				$ 12,372,000	$ 11,943,000	$ 2,569,000	$ 2,408,000	$ 9,803,000	$ 9,535,000
Less: Allowance for doubtful accounts	0				0				0	0
Accounts Receivable, Net	12,372,000				11,943,000				12,372,000	11,943,000
Retroactive billing									9,300,000
Contract revenue nonrecurring															10,800,000
Revenue	$ 15,579,000	$ 15,692,000	$ 14,745,000	$ 14,477,000	$ 14,045,000	$ 13,460,000	$ 13,007,000	$ 12,994,000	$ 60,493,000	$ 53,506,000					$ 1,500,000