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Significant accounting policies.

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate total amount of expenses directly related to the marketing or selling of products or services.

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The Company and Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Customer	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant Accounting Policies [Line Items]
Equity investments	$ 8,367	$ 7,879
Subscription contracts, typical length	Service contracts are generally for 30 days or 12 months in length, billed either monthly or annually and generally in advance.
Shipping and handling costs	$ 127,778	139,675	$ 145,961
Advertising and promotional expenses	28,900	27,000	25,200
Limited Partnership Fund
Significant Accounting Policies [Line Items]
Equity investments	2,300	1,700	900
Limited Partnership Fund \| Fair Value Measured at Net Asset Value Per Share
Significant Accounting Policies [Line Items]
Equity investments	$ 2,300	1,700
Convertible Debt Securities [Member]
Significant Accounting Policies [Line Items]
Equity investments		$ 200	200
Minimum
Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life (in years)	3 years
Maximum
Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life (in years)	10 years
Accounts Receivable \| Customer Concentration Risk
Significant Accounting Policies [Line Items]
Number of customer \| Customer	0
Concentration risk, customer	No other customers accounted for 10% or greater of the Company’s total accounts receivable.
Accounts Receivable \| Customer Concentration Risk \| Minimum
Significant Accounting Policies [Line Items]
Concentration risk, percentage	10.00%
Accounts Receivable \| Best Buy Inc \| Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage	21.00%	19.00%
Accounts Receivable \| Amazon \| Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage	11.00%	16.00%
Accounts Receivable \| AT&T \| Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage		16.00%
Shipping and Handling
Significant Accounting Policies [Line Items]
Shipping and handling costs	$ 8,800	$ 16,900	$ 16,400
Foreign Exchange Forward \| Maximum
Significant Accounting Policies [Line Items]
Derivative, term of contract (in months)	6 months