21. Segment and Geographic Information

The Company reports and evaluates financial information for two segments: Seismic and Non-Seismic. Seismic product lines include wireless data acquisition systems, reservoir characterization products and services, and traditional exploration products such as geophones, hydrophones, leader wire, connectors, cables, marine streamer retrieval and steering devices and various other products. The Non-Seismic product lines include imaging products and industrial products.

The following tables summarize the Company’s segment information:

	YEAR ENDED SEPTEMBER 30,
	2016			2015			2014
Revenue:
Seismic	$	33,792		$	60,565		$	214,946
Non-seismic		27,708			23,758			21,420
Corporate		560			544			546
Total		62,060			84,867			236,912
Income (loss) from operations:
Seismic		(47,690	)		(42,732	)		65,159
Non-seismic		4,093			3,031			2,733
Corporate		(11,913	)		(12,854	)		(14,093	)
Total		(55,510	)		(52,555	)		53,799
Depreciation, impairment, inventory obsolescence and stock-based compensation expenses:
Seismic		34,945			23,696			19,925
Non-seismic		746			505			468
Corporate		1,847			1,728			1,500
Total		36,538			25,929			21,893
Interest income:
Seismic		161			280			74
Non-seismic		3			7			5
Corporate		212			140			44
Total		376			427			123
Interest expense:
Seismic		—			—			—
Non-seismic		—			—			—
Corporate		26			229			471
Total		26			229			471

The Company’s manufacturing operations for its Seismic and Non-Seismic business segments are combined. Therefore, the Company does not segregate and report separate balance sheet accounts for these segments. As a result, the Company has not presented business segment balance sheet information in the table above.

“Corporate” revenue consists of rental revenue earned from an operating lease of a surplus building located in Houston, Texas. “Corporate” loss from operations primarily consists of the Company’s Houston headquarter general and administrative expenses.

The Company generates revenue from product sales and rentals from its subsidiaries located in the United States, Canada, Colombia, the Russian Federation and the United Kingdom. Revenue information for the Company is as follows (in thousands):

	YEAR ENDED SEPTEMBER 30,
	2016			2015			2014
United States	$	56,094		$	77,487		$	230,818
Canada		3,028			4,796			39,064
Colombia		556			609			3,222
Russian Federation		4,254			5,554			14,048
United Kingdom		2,120			2,644			2,229
Eliminations		(3,992	)		(6,223	)		(52,469	)
	$	62,060		$	84,867		$	236,912

A summary of revenue by geographic area for fiscal years 2016, 2015 and 2014 is as follows (in thousands):

	YEAR ENDED SEPTEMBER 30,
	2016		2015		2014
Asia (including Middle East)	$	18,745	$	8,755	$	5,028
Canada		3,048		2,298		42,632
Europe		4,219		13,672		71,713
Middle East		1,749		2,024		7,550
United States		32,317		50,101		96,380
Other		1,982		8,017		13,609
	$	62,060	$	84,867	$	236,912

Revenue is attributed to countries based on the ultimate destination of the product sold, if known. If the ultimate destination is not known, revenue is attributed to countries based on the geographic location of the initial shipment.

Long-lived assets were as follows (in thousands):

	AS OF SEPTEMBER 30,
	2016		2015
United States	$	62,921	$	70,170
Canada		11,911		19,323
Colombia		3,487		9,227
Russian Federation		1,498		1,215
United Kingdom		391		502
China		14		14
	$	80,222	$	100,451