CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounts receivable, net of allowance	$ 31,039	$ 20,715
Less: Accumulated depreciation and amortization	91,037	83,745
Intangible assets, net of accumulated amortization	$ 121,717	$ 108,167
Preferred stock par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock authorized (in shares)	5,000,000	5,000,000
Preferred stock outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock authorized (in shares)	250,000,000	250,000,000
Common stock issued (in shares)	109,500,000	105,900,000
Common stock outstanding (in shares)	61,700,000	58,300,000
Treasury stock (in shares)	47,700,000	47,600,000
Series A convertible preferred stock
Preferred stock authorized (in shares)	1,000,000	1,000,000