Variable Interest Entities Variable Interest Entities (Notes)	3 Months Ended
Jun. 30, 2013
Variable Interest Entities [Abstract]
Equity Method Investments and Joint Ventures Disclosure [Text Block]	VARIABLE INTEREST ENTITIES: Convida Wireless On December 21, 2012, we formed a joint venture with Sony Corporation of America to combine Sony's consumer electronics expertise with our wireless machine-to-machine ("M2M") and bandwidth management research. The joint venture, called Convida Wireless, will focus on driving new research in M2M wireless communications and other connectivity areas. Based on the terms of the agreement, the parties will contribute funding and resources for additional M2M research and platform development, which we will perform. Stephens Capital Partners LLC ("Stephens"), the principal investing affiliate of Stephens Inc., is a minority investor in Convida Wireless. Our agreement with Sony is a multiple-element arrangement that also includes a three-year license to our patents for Sony's sale of 3G and 4G products, effective January 1, 2013, and an amount for past sales. Convida Wireless is a variable interest entity. Based on our provision of M2M research and platform development services to Convida Wireless, we have determined that we are the primary beneficiary for accounting purposes and must consolidate Convida Wireless. For the six months ended June 30, 2013, we have allocated approximately $1.3 million of Convida Wireless's net loss to non-controlling interests held by other parties.

Variable Interest Entities Variable Interest Entities (Notes)

3 Months Ended

Jun. 30, 2013

Variable Interest Entities [Abstract]

Equity Method Investments and Joint Ventures Disclosure [Text Block]

VARIABLE INTEREST ENTITIES:

Convida Wireless

On December 21, 2012, we formed a joint venture with Sony Corporation of America to combine Sony's consumer electronics expertise with our wireless machine-to-machine ("M2M") and bandwidth management research. The joint venture, called Convida Wireless, will focus on driving new research in M2M wireless communications and other connectivity areas. Based on the terms of the agreement, the parties will contribute funding and resources for additional M2M research and platform development, which we will perform. Stephens Capital Partners LLC ("Stephens"), the principal investing affiliate of Stephens Inc., is a minority investor in Convida Wireless.

Our agreement with Sony is a multiple-element arrangement that also includes a three-year license to our patents for Sony's sale of 3G and 4G products, effective January 1, 2013, and an amount for past sales.

Convida Wireless is a variable interest entity. Based on our provision of M2M research and platform development services to Convida Wireless, we have determined that we are the primary beneficiary for accounting purposes and must consolidate Convida Wireless. For the six months ended June 30, 2013, we have allocated approximately $1.3 million of Convida Wireless's net loss to non-controlling interests held by other parties.