Nature of the Business Schedule of Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of product revenue	$ 267,974	$ 298,348	$ 250,268
Cost of service revenue	94,268	65,255	65,243
Total cost of revenue	$ 362,242	363,603	315,511
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of product revenue		307,865	252,688
Cost of service revenue		55,738	62,823
Total cost of revenue		363,603	315,511
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of product revenue		(9,517)	(2,420)
Cost of service revenue		9,517	2,420
Total cost of revenue		$ 0	$ 0