Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,100	$ 2,200	$ 1,700
Property, plant and equipment, gross	32,737	33,269
Accumulated depreciation and amortization	(16,777)	(15,508)
Property, plant and equipment - net	$ 15,960	17,761
Equipment, Machinery And Leasehold Improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Equipment, Machinery And Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	7 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,426	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
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	20 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years
Land, building and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 18,255	18,095
Equipment and machinery
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9,056	$ 9,709