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Unbilled Receivables (Details) - USD ($)	3 Months Ended								12 Months Ended
Unbilled Receivables (Details) - USD ($)	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Unbilled receivables
Unbilled receivables, net	$ 1,597,672				$ 3,920,209				$ 1,597,672	$ 3,920,209
Provision for loss on unbilled receivables					1,300,000					1,300,000
Change in operating income resulting from revised estimates	$ 546,460	$ 232,344	$ 1,973,116	$ (308,733)	$ (2,884,231)	$ (264,862)	$ (637,965)	$ 166,315	2,443,187	(3,620,743)	$ (142,868)
Contracts accounted for under percentage of completion
Unbilled receivables
Change in operating income resulting from revised estimates									$ 58,000	$ (117,000)	$ (1,500,000)