Business Acquisitions (Narrative) (Details) (USD $)	12 Months Ended					0 Months Ended				12 Months Ended		0 Months Ended			0 Months Ended			0 Months Ended		0 Months Ended		0 Months Ended					12 Months Ended			0 Months Ended			0 Months Ended				12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Arada Systems [Member]	Jun. 21, 2013 Arada Systems [Member]	Jun. 23, 2013 Arada Systems [Member] Technology [Member]	Jun. 21, 2013 Arada Systems [Member] Technology [Member]	Jun. 21, 2013 Arada Systems [Member] US Federal [Member]	Jun. 21, 2013 Arada Systems [Member] State [Member]	Dec. 31, 2013 Sierra Wireless AirCard Business [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member]	Apr. 04, 2013 Sierra Wireless AirCard Business [Member] In-Process Research and Development [Member]	Dec. 31, 2013 Sierra Wireless AirCard Business [Member] In-Process Research and Development [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] In-Process Research and Development [Member]	Apr. 04, 2013 Sierra Wireless AirCard Business [Member] Technology [Member]	Dec. 31, 2013 Sierra Wireless AirCard Business [Member] Technology [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] Technology [Member]	Apr. 04, 2013 Sierra Wireless AirCard Business [Member] Customer Relationships [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] Customer Relationships [Member]	Apr. 04, 2013 Sierra Wireless AirCard Business [Member] Noncompete Agreements [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] Noncompete Agreements [Member]	Apr. 04, 2013 Sierra Wireless AirCard Business [Member] Order Backlog [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] Order Backlog [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] US Federal [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] Canadian [Member]	Apr. 02, 2013 Sierra Wireless AirCard Business [Member] State [Member]	Dec. 31, 2013 Avaak Inc. [Member]	Dec. 31, 2012 Avaak Inc. [Member]	Jul. 03, 2012 Avaak Inc. [Member]	Jul. 03, 2012 Avaak Inc. [Member] In-Process Research and Development [Member]	Jul. 03, 2012 Avaak Inc. [Member] Technology [Member]	Dec. 31, 2013 Avaak Inc. [Member] Technology [Member]	Jul. 03, 2012 Avaak Inc. [Member] Customer Relationships [Member]	Jul. 03, 2012 Avaak Inc. [Member] Trade Names and Trademarks [Member]	Jul. 03, 2012 Avaak Inc. [Member] US Federal [Member]	Jul. 03, 2012 Avaak Inc. [Member] State [Member]	Dec. 31, 2013 Firetide, Inc. [Member]	Dec. 31, 2012 Firetide, Inc. [Member]	Jun. 04, 2012 Firetide, Inc. [Member]	Jun. 04, 2012 Firetide, Inc. [Member] Technology [Member]	Jun. 04, 2012 Firetide, Inc. [Member] US Federal [Member]	Jun. 04, 2012 Firetide, Inc. [Member] State [Member]
Business Acquisition [Line Items]
Goodwill, Acquired During Period	$ 55,036,000	$ 14,936,000
Total purchase price				5,235,000						140,030,000																		24,000,000
Goodwill, Purchase Accounting Adjustments										500,000
Business Acquisition, Percentage of Voting Interests Acquired																													100.00%
Purchase price, cash paid				4,200,000																							2,400,000	21,600,000									600,000	6,600,000
Business Acquisition Cost of Acquired Entity, Cash To Be Paid At Future Date				1,100,000
Intangible assets, net					4,040,000		4,000,000				69,700,000			9,500,000			16,300,000		40,500,000		2,300,000		1,100,000						6,000,000	2,000,000	2,300,000		300,000	1,400,000					4,159,000
Total consideration					5,250,000						140,030,000																		24,004,000										7,200,000
Goodwill	155,916,000	100,880,000	85,944,000		1,195,000						53,841,000																		11,895,000										3,041,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount								700,000	1,200,000															36,600,000	2,300,000	53,800,000									0	0					1,600,000	3,000,000
Deferred tax assets, net																													5,937,000
Discount rate used to calculate present value of future cash flows ( in percentage)						21.50%						13.00%			10.00%			12.00%		12.00%		10.00%									14.00%		14.00%	16.00%						22.00%
Acquired intangible assets, estimated useful life ( in years)						5 years						4 years			4 years			8 years		5 years											5 years		5 years	5 years						5 years
In Process Research and Development achieving technological feasibility													7,400,000			7,400,000																2,000,000
IPR&D Reaching Technical Feasibility Useful Life																														4 years
Impairment charges	2,000,000	0	0							2,000,000
Indefinite-lived intangible assets	100,000	1,000,000								100,000
Amortization of Intangible Assets	15,500,000	4,900,000	4,800,000
Future Cost to Complete In-Process Research and Development	$ 200,000												$ 200,000