Property, Plant and Equipment (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2015 USD ($) item	Sep. 30, 2014 USD ($) item	Sep. 30, 2013 USD ($)
Property, plant and equipment, net
Property, plant and equipment, gross	$ 151,358	$ 145,474
Less accumulated depreciation and amortization	(73,713)	(66,230)
Property, plant and equipment, net	$ 77,645	$ 79,244
Number of equipment under capital leases | item	0	0
Depreciation and amortization of property, plant and equipment	$ 9,896	$ 8,801	$ 7,582
Land
Property, plant and equipment, net
Property, plant and equipment, gross	$ 8,987	8,546
Buildings
Property, plant and equipment, net
Estimated Useful Life	30 years
Property, plant and equipment, gross	$ 74,214	72,283
Leasehold improvements
Property, plant and equipment, net
Property, plant and equipment, gross	$ 3,326	3,466
Leasehold improvements | Minimum
Property, plant and equipment, net
Estimated Useful Life	1 year
Leasehold improvements | Maximum
Property, plant and equipment, net
Estimated Useful Life	7 years
Furniture, fixtures and equipment
Property, plant and equipment, net
Property, plant and equipment, gross	$ 64,831	$ 61,179
Furniture, fixtures and equipment | Minimum
Property, plant and equipment, net
Estimated Useful Life	3 years
Furniture, fixtures and equipment | Maximum
Property, plant and equipment, net
Estimated Useful Life	10 years