Rental Equipment

12 Months Ended

Sep. 30, 2014

Rental Equipment [Abstract]

Rental Equipment

9. Rental Equipment

Rental equipment consisted of the following (in thousands):

	AS OF SEPTEMBER 30,
	2014			2013
Rental equipment, primarily geophones and related products	$	76,193		$	50,878
Accumulated depreciation		(22,320	)		(13,970	)
	$	53,873		$	36,908

Rental equipment depreciation expense was $12.4 million, $7.3 million and $5.5 million in fiscal years 2014, 2013 and 2012, respectively. We transferred $10.7 million and $4.9 million of inventories to our rental equipment during fiscal years 2014 and 2013, respectively, which had a non-cash impact.