Acquisition Pro Forma Information (Details) - TeleCommunication Systems, Inc. - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Business Acquisition [Line Items]
Net sales	$ 130,238,000	$ 153,500,000	$ 453,475,000	$ 499,934,000
Net (loss) income	$ (21,395,000)	$ 1,739,000	$ (27,694,000)	$ (16,065,000)
Basic net income per share (in dollars per share)	$ (1.32)	$ 0.11	$ (1.71)	$ (0.99)
Diluted net income per share (in dollars per share)	$ (1.32)	$ 0.11	$ (1.71)	$ (0.99)
Pro Forma [Member]
Business Acquisition [Line Items]
Elimination of sales	$ 1,569,000	$ 0	$ 7,331,000	$ 285,000
Reduction to capitalized software amortization	937,000	890,000	3,062,000	2,539,000
(Elimination) addition of acquisition plan expenses	(22,464,000)	0	(25,507,000)	35,660,000
Incremental amortization expense associated with the increase in acquired other intangible assets	1,581,000	3,891,000	7,935,000	11,628,000
(Reduction) increase in interest expense	(1,836,000)	2,165,000	1,731,000	6,221,000
Reduction to interest income	$ 124,000	$ 158,000	$ 585,000	$ 509,000