Seismic Equipment Lease Pool and Property and Equipment

12 Months Ended

Jan. 31, 2014

Property Plant And Equipment [Abstract]

Seismic Equipment Lease Pool and Property and Equipment

7. Seismic Equipment Lease Pool and Property and Equipment

Seismic equipment lease pool and property and equipment consisted of the following (in thousands):

	As of January 31,
	2014			2013
Recording channels	$	148,004		$	126,600
Other peripheral equipment		113,640			114,795
Cost of seismic equipment lease pool		261,644			241,395
Land and buildings		366			366
Furniture and fixtures		8,904			8,899
Autos and trucks		770			748
Cost of property and equipment		10,040			10,013
Cost of seismic equipment lease pool and property and equipment		271,684			251,408
Less accumulated depreciation		(142,111	)		(131,800	)
Net book value of seismic equipment lease pool and property and equipment	$	129,573		$	119,608

	As of January 31,
	2014		2013
Location of seismic equipment lease pool and property and equipment (in thousands):
United States	$	42,087	$	40,908
Canada		35,931		22,639
Latin America		18,128		23,109
Australia		7,198		7,973
Russia		2,134		3,708
Singapore		6,451		9,433
United Kingdom		218		329
Europe		17,426		11,509
Net book value of seismic equipment lease pool and property and equipment	$	129,573	$	119,608