Reconciliation Of Reported Segment Information From Segments To Consolidated Financial Statement Items (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Other income (expenses)	$ 0	$ (317)	$ 0	$ (307)
Interest expense	0	8	0	11
Interest expense	174	48	269	104
Total interest expense	174	56	269	115
Depreciation and amortization	119	8	240	11
Segment income (loss)	(1,281)	(701)	(2,281)	49
Patent licensing revenue	0	0	200	0
Income tax expense (recovery)	(500)	(287)	(853)	26
Net income (loss) from continuing operations	(743)	(421)	(1,390)	(31)
Segment assets	58,060	56,020	58,060	56,020	61,310
Reportable Segments [Member]
Other income (expenses)	0	(318)	0	(308)
Interest expense	174	48	269	104
Depreciation and amortization	119	8	240	11
Segment income (loss)	(932)	(160)	(1,519)	1,065
Segment assets	25,126	20,472	25,126	20,472
Unallocated Amount to Segment [Member]
Other income (expenses)	0	1	0	1
Interest expense	0	8	0	11
Depreciation and amortization	0	0	0	0
Patent licensing revenue	0	0	200	0
Other income (expense) and earnings (loss) of other equity accounted investments	38	(6)	38	(53)
Other corporate expenses (primarily corporate level interest, general and administrative expenses)	(349)	(542)	(962)	(1,017)
Segment assets	$ 32,934	$ 35,548	$ 32,934	$ 35,548