Business Overview and Basis of Presentation (Details) - USD ($) $ in Thousands			1 Months Ended		3 Months Ended	12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Oct. 31, 2018	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Release of Product Return and Rebate Reserves						$ 12,400
Bad debt expense						$ 56	$ 7,893	$ 339
Advertising Barter Transactions [Member]
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Nonmonetary Transaction, Contract Period			6 years					4 years
Fair value of revenue in nonmonetary transaction							15,000
Advertising credit, expected period of use						6 years
Nonmonetary Transaction, Advertising Credit, Utilized During the Period						$ 2,300	800
Nonmonetary Transaction, Cost of Goods							7,000
Nonmonetary Transaction, Advertising Credit, Amount							13,000
Nonmonetary Transaction, Cash Received							2,000
Nonmonetary Transaction, Remaining Advertising Credit					$ 12,200	$ 9,900	12,200
Wynit Distribution [Member]
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Bad debt expense	$ 7,600
Customer Concentration Risk [Member] | Wynit Distribution [Member]
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Insurance receivable	26,800
Insurance proceeds received				$ 5,400	21,400
Bad debt expense					7,600
Inventory Expense, Net Of Insurance Recovery					1,400
Unrecognized Revenue, Net of Adjustments					8,100
Accounts Receivable Charge Recorded					35,800
Unrecoverable Inventory Costs					$ 5,500
Accounts Receivable, Gross	30,300
Insurance Settlements Receivable, Accounts Receivable	22,700
Insurance Settlements Receivable, Inventory	$ 4,100
Charges Offset By Insurance Recorded							$ 9,000
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Wynit Distribution [Member]
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk, percentage		11.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Wynit Distribution [Member]
Organization, Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk, percentage		19.00%