Goodwill and Other Intangible Assets, Net (Tables)

6 Months Ended

Mar. 31, 2017

Goodwill and Other Intangible Assets, Net

Summary of intangible assets

	Gross		Accumulated		Carrying
September 30, 2016	Amount		Amortization		Amount
Patents	$	4,030	$	(3,370)	$	660
Trademarks		3,800		—		3,800
Customer relationships		2,100		(275)		1,825
Other		291		(14)		277
	$	10,221	$	(3,659)	$	6,562

	Gross		Accumulated		Carrying
March 31, 2017	Amount		Amortization		Amount
Patents	$	4,030	$	(3,509)	$	521
Trademarks		3,800		—		3,800
Customer relationships		2,100		(351)		1,749
Other		291		(44)		247
	$	10,221	$	(3,904)	$	6,317

Schedule of estimated future aggregate amortization expense

Estimated future Aggregate Amortization Expense:
Year Ended September 30,
2017	$	244
2018		485
2019		305
2020		198
2021		194
Thereafter		1,091