Solmetric Acquisition - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2014 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Product	Dec. 31, 2014 USD ($)
Business Acquisition [Line Items]
Impairment of goodwill and intangible assets		$ 36,600		$ 36,601	$ 4,506
Solmetric
Business Acquisition [Line Items]
Purchase price agreed in the purchase agreement	$ 12,000					$ 12,179
Purchase price on acquisition date	12,200
Purchase of outstanding stock and options	12,200
Retention bonus for employees						300
Transaction fees						100
Purchase consideration placed in escrow	$ 1,000
Impairment of goodwill and intangible assets		$ 7,100
Deferred tax liabilities gross						2,500
Deferred tax assets						1,000
Revenue from acquisition						3,200
Net income from acquisition						$ 400
Number of ceased products | Product					2
Impairment charges related to discontinued operations			$ 4,500