Organization, Business and Summary of Significant Accounting Policies - Rollforward of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Allowance for Doubtful Accounts [Roll Forward]
Balance at beginning	$ 8,513	$ 7,486
Charged to/reversed from expense	3,149	4,088
Charged to/from other accounts		283
Deductions (write offs)	(1,888)	(3,344)
Balance at ending	$ 9,774	$ 8,513