Property, Buildings and Equipment, net (Tables)

12 Months Ended

Jul. 31, 2016

Property, Buildings and Equipment, net [Abstract]

Property, Buildings and Equipment, net

Property, buildings and equipment is summarized in the following table.

	Balance at July 31,
	2016			2015
	(in thousands)
Land and land improvements	$	393		$	393
Buildings and building improvements		9,700			10,368
Field equipment		2,222			2,786
Computer equipment		4,439			4,685
Computer software		3,105			6,112
Office furniture and equipment		2,683			4,076
Vehicles		1,333			1,439
Other		543			693
		24,418			30,552
Accumulated depreciation and amortization		(18,324	)		(23,438	)
Property, buildings and equipment, net	$	6,094		$	7,114