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Significant Accounting Policies (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill [Line Items]
Business base percentage, prime contracts		95.00%
Business base percentage, subcontracts		5.00%
Increase in fair value of intangibles resulting from purchase accounting adjustment	$ 9,000,000
Decrease in amortization of intangible assets	300,000	$ 324,000
Goodwill, impairment evaluation value			$ 26,000,000
Goodwill impairment loss		0
Decrease in goodwill resulting from purchase accounting adjustment	$ (9,000,000)	$ (8,756,000)
Finite-lived intangibles estimated useful lives		10 years
Uncertain tax positions		$ 0	0
Tax interest		0	0
Tax penalties		0	0
Amortization of capitalized computer software			$ 0
Cash, FDIC insured amount		$ 250,000
2006 Long Term Incentive Plan | Employee Stock Option
Goodwill [Line Items]
Number of options that may be granted with a term of more than 10 years from date of grant (in shares)		0
Expiration term of options		10 years
New Enterprise Resource Planning (ERP) System
Goodwill [Line Items]
Amortization of capitalized computer software		$ 0
Leasehold Improvements | Minimum
Goodwill [Line Items]
Estimated useful lives		3 years
Leasehold Improvements | Maximum
Goodwill [Line Items]
Estimated useful lives		7 years

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