Summary of Significant Accounting Policies - Additional Information (Details)		1 Months Ended	12 Months Ended
	Aug. 24, 2016	Sep. 30, 2016 shares	Dec. 31, 2017 USD ($) customer	Dec. 31, 2016 USD ($)
Significant Accounting Policies [Line Items]
Inventory at consigned location			$ 11,800,000	$ 12,900,000
Impairment charges of Long-lived assets disposition			0
Impairment charges of Long-lived assets held for use			0
Impairment of intangible assets				1,736,000
Foreign currency losses in continuing operations				(400,000)
Warrants converted to shares | shares		268,614
Product shipment costs			2,300,000	2,700,000
Stock-based compensation expense			$ 100,000	$ 200,000
Reverse stock split ratio	0.0833		0.0833
Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment			3 years
Intangible assets, amortization period			1 year
Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment			7 years
Intangible assets, amortization period			15 years
Sales | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, number of customers | customer			1