Organization and Summary of Significant Accounting Policies Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 4,808	$ 5,472	$ 6,182
Bad debt expense	3,377	1,900	2,768
Write-offs, net of recoveries	(2,243)	(2,564)	(3,478)
Balance at end of year	5,942	4,808	5,472
SEC Schedule, 12-09, Reserve, Inventory [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	11,398	9,036	7,726
Provision for inventory write-downs	7,781	6,181	3,656
Deductions for inventory write-offs	(3,983)	(3,819)	(2,346)
Balance at end of year	$ 15,196	$ 11,398	$ 9,036