Discontinued Operations (Tables)

9 Months Ended

Apr. 30, 2014

Discontinued Operations [Abstract]

Schedule of Changes in Company's Estimated Liability

	Nine Months Ended April 30, 2014
	(in thousands)
Balance, beginning of period	$	931
Additional liability		1,700
Payments		(842	)
Balance, end of period	$	1,789

Shedule of Revenues, Loss before Income Taxes and Net Loss of Straight Path in Discontinued Operations

	Three Months Ended April 30,					Nine Months Ended April 30,
	2014		2013			2014		2013
	(in thousands)
Revenues	$	—	$	285		$	—	$	982
Loss before income taxes	$	—	$	(958	)	$	—	$	(2,810	)
Net loss	$	—	$	(958	)	$	—	$	(2,822	)