Intangible Assets and Goodwill

6 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

7. Intangible Assets and Goodwill

The following tables present certain information regarding our intangible assets. Amortizable intangible assets are being amortized on a straight-line basis over their estimated useful lives of ten years with no estimated residual values, which materially approximates the expected pattern of use. 

	March 31, 2019			September 30, 2018
Trademarks	$	17,620		$	17,635
Customer relationships		15,058			15,071
		32,678			32,706
Less: accumulated amortization		(28,594	)		(26,983	)
	$	4,084		$	5,723

Aggregate intangible asset amortization expense amounted to $825 and $877 for the three months ended March 31, 2019 and 2018, respectively. 

The estimated intangible asset amortization expense for the years ending December 31 are as follows: 

Year ending December 31,
2019 (nine months)	$	2,451
2020		1,633
Total	$	4,084

Goodwill 

The difference in the carrying amount of goodwill at March 31, 2019 and September 30, 2018 (amounting to $39), as reported in the accompanying unaudited interim condensed consolidated balance sheets, is attributable to foreign currency translation adjustments.