Liquidity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015	Sep. 30, 2014
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 6,934	$ 4,222	$ 6,934	$ 4,222	$ 5,558	$ 3,908
Net working capital	5,300		5,300
Accumulated deficit	(53,295)		(53,295)		$ (53,516)
Operating income	689	515	1,071	774
Net income	337	$ (82)	$ 221	$ 52
Line of Credit Facility [Line Items]
Document Period End Date			Mar. 31, 2016
Amount of unused availability under the line	2,500		$ 2,500
Line of Credit
Line of Credit Facility [Line Items]
Maximum availability	6,000		6,000
Amount of unused availability under the line	1,600		1,600
Accounts receivables
Line of Credit Facility [Line Items]
Maximum availability	$ 3,000		$ 3,000
Interest rate (percent)	4.00%		4.00%
Unbilled receivables
Line of Credit Facility [Line Items]
Interest rate (percent)	4.00%		4.00%		4.00%