Acquisition Acquisition (Pro Forma Information) (Details) - TeleCommunication Systems, Inc. - USD ($)	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015
Business Acquisition [Line Items]
Net sales	$ 611,241,000	$ 664,315,000
Net loss	$ (30,750,000)	$ (13,299,000)
Basic net loss per share (in dollars per share)	$ (1.81)	$ (0.82)
Diluted net loss per share (in dollars per share)	$ (1.81)	$ (0.82)
Pro Forma
Business Acquisition [Line Items]
Elimination of sales	$ 8,601,000	$ 293,000
Reduction to capitalized software amortization	2,566,000	3,529,000
(Elimination) addition of acquisition plan expenses	(36,212,000)	35,890,000
Incremental amortization expense associated with the increase in acquired other intangible assets	7,113,000	15,662,000
Increase in interest expense	2,339,000	7,915,000
Reduction to interest income	$ 577,000	$ 705,000