Condensed consolidated financial statement details - Accrued Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Employee related liabilities	$ 19,024,000	$ 7,067,000
Accrued sales incentives	34,117,000	30,609,000
Other Accounts Payable and Accrued Liabilities	34,989,000	39,444,000
Customer Refund Liability, Current	9,263,000	10,817,000
Warranty liability	8,268,000	7,997,000
Customer deposits	2,760,000	2,347,000
Income taxes payable	223,000	221,000
Purchase Commitment, Remaining Minimum Amount Committed	1,369,000	1,921,000
Inventory received	7,169,000	1,709,000
Other	11,390,000	11,644,000
Accrued expenses and other current liabilities	$ 128,572,000	$ 113,776,000