Balance Sheet (Tables)

6 Months Ended

Jul. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts and Contracts Receivables

	July 31, 2018			January 31, 2018
	(in thousands)
Receivables:
Accounts receivable	$	11,490		$	16,392
Contracts receivable	3,823			4,921
	15,313			21,313
Less long-term portion	(700		)	(6,934		)
Current accounts and contracts receivable	14,613			14,379
Less current portion of allowance for doubtful accounts	(3,115		)	(3,885		)
Current portion of accounts and contracts receivable, net of allowance for doubtful accounts	$	11,498		$	10,494

Schedule of Inventories

	July 31, 2018			January 31, 2018
	(in thousands)
Inventories:
Raw materials	$	4,842		$	5,099
Finished goods	6,138			6,185
Work in progress	1,929			1,247
	12,909			12,531
Less allowance for obsolescence	(1,054		)	(1,675		)
Total inventories, net	$	11,855		$	10,856

	July 31, 2018			January 31, 2018
	(in thousands)
Inventories:
Raw materials	$	4,842		$	5,099
Finished goods	6,138			6,185
Work in progress	1,929			1,247
	12,909			12,531
Less allowance for obsolescence	(1,054		)	(1,675		)
Total inventories, net	$	11,855		$	10,856

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	July 31, 2018			January 31, 2018
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	168,646		$	174,274
Land and buildings	3,381			3,380
Furniture and fixtures	11,166			10,222
Autos and trucks	778			722
	183,971			188,598
Accumulated depreciation and amortization	(164,206		)	(165,698		)
Total seismic equipment lease pool and property and equipment, net	$	19,765		$	22,900

	July 31, 2018			January 31, 2018
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	168,646		$	174,274
Land and buildings	3,381			3,380
Furniture and fixtures	11,166			10,222
Autos and trucks	778			722
	183,971			188,598
Accumulated depreciation and amortization	(164,206		)	(165,698		)
Total seismic equipment lease pool and property and equipment, net	$	19,765		$	22,900