Segment Information Operating Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating Income (Loss)									$ (25,300)	$ (34,766)	$ (39,746)	[1]
Gross Profit	13,950	14,697	12,007	11,148	10,853	14,166	19,464	19,655	51,802	64,138	88,039	[1]
Revenues	48,174	50,805	49,964	43,799	50,138	54,109	65,438	68,178	192,742	237,863	286,096	[1]
Operating Segments [Member] | Software-Systems [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									(6,169)	(7,974)	3,735
Gross Profit									24,949	25,860	36,326
Revenues									40,281	44,934	52,666
Operating Segments [Member] | Embedded Products and Hardware Services [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									2,457	(25)	2,661
Gross Profit									35,449	47,603	61,642
Revenues									152,461	192,929	233,430
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									(21,588)	(26,767)	(46,142)
Gross Profit									$ (8,596)	$ (9,325)	$ (9,929)

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