Summary of Significant Accounting Policies - Additional Information (Details)		1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 24, 2016	Sep. 30, 2016 shares	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) customer shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Significant Accounting Policies [Line Items]
Restricted cash				$ 0	$ 2,350,000
Inventory at consigned location				$ 12,900,000	16,200,000
Revenue growth rate				3.00%
Percentage of weighted average cost of capital discount rate				13.50%
Goodwill			$ 164,300,000	$ 0	164,263,000
Foreign currency (losses) gain in continuing operations				(400,000)	(700,000)	$ 800,000
Warrants converted to shares | shares		268,614
Product shipment costs				2,700,000	3,000,000	3,000,000
Stock-based compensation expense				$ 200,000	100,000	$ 1,900,000
Reverse stock split ratio	0.0833			0.0833
Accounting Standards Update 2015-03 | Long-term debt, current
Significant Accounting Policies [Line Items]
Debt issuance costs					$ 400,000
Redeemable Convertible Preferred Stock Outstanding
Significant Accounting Policies [Line Items]
Preferred stock convertible to common stock | shares				0	0	0
Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				3 years
Revenue growth rate				3.00%
Intangible assets, amortization period				1 year
Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment				7 years
Revenue growth rate				13.00%
Intangible assets, amortization period				15 years
Sales | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, number of customers | customer				0