Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating expenses:
Loss from discontinued operations		$ 0	$ (476)	$ (4,548)
AssuredUVS [Member]
Discontinued Operations [Line Items]
Impairment of intangible assets	1,600
Impairment of property, plant and equipment	200
Loss from discontinued operations
Net revenue		0	50	360
Cost of goods sold		0	142	2,501
Gross profit		0	(92)	(2,141)
Operating expenses:
Research and development		0	0	741
Sales and marketing		0	0	56
General and administrative		0	393	765
Restructuring charge (recovery)		0	(10)	844
Total operating expenses		0	383	2,406
Operating loss		0	(475)	(4,547)
Other income (expense), net		0	(1)	(1)
Loss from discontinued operations		$ 0	$ (476)	$ (4,548)