Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2016	Sep. 30, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 33,579	$ 33,269
Accumulated depreciation and amortization	(16,683)	(15,508)
Property, plant and equipment - net	16,896	17,761
Land, building and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 18,266	18,095
Land, building and leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Land, building and leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	7 years
Leasehold Improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	7 years
Equipment and machinery
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9,831	9,709
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,482	$ 5,465
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	10 years
Building | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	20 years
Building | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years