Consolidated Statement of Changes in Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member] Class A Common Stock [Member]	Common Stock [Member] Class B Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2019	$ 354,707	$ (388)	$ 4	$ 3	$ 446,633		$ (82,405)	$ (388)	$ (9,528)
Beginning balance (in shares) at Dec. 31, 2019			41,271	31,131
Net loss	(10,500)						(10,500)
Repurchase and retirement of common stock	0
Reclassification of mezzanine equity to permanent equity	1,568				1,568
Issuance of common stock for acquisitions	3,504				3,504
Issuance of common stock for acquisitions (in shares)			230
Exercise of stock options and other	1,710				1,710
Exercise of stock options and other (in shares)			1,472
Vesting of restricted stock (in shares)			223
Conversion from Class B to Class A common stock			1,020	(1,020)
Stock-based compensation	21,254				21,254
Foreign currency translation, net of tax	7,782								7,782
Retirement related benefit plans, net of tax	(1,051)								(1,051)
Ending balance at Dec. 31, 2020	378,586		$ 4	$ 3	474,669		(93,293)		(2,797)
Ending balance (in shares) at Dec. 31, 2020			44,216	30,111
Net loss	(8,794)						(8,794)
Repurchase and retirement of common stock	0
Issuance of common stock in private placement, net of issuance costs	199,872		$ 1		199,871
Issuance of common stock in private placement, net of issuance costs (in shares)			2,936
Issuance of common stock for acquisitions	3,690				3,690
Issuance of common stock for acquisitions (in shares)			155
Exercise of stock options	2,262				2,262
Exercise of stock options (in shares)			1,478
Vesting of restricted stock (in shares)			373
Conversion from Class B to Class A common stock			2,366	(2,366)
Stock-based compensation	43,734				43,734
Foreign currency translation, net of tax	(7,254)								(7,254)
Retirement related benefit plans, net of tax	1,101								1,101
Ending balance at Dec. 31, 2021	613,197		$ 5	$ 3	724,226		(102,087)		(8,950)
Ending balance (in shares) at Dec. 31, 2021			51,524	27,745
Net loss	(43,429)						(43,429)
Settlement of convertible senior notes	(29,756)				(29,756)
Repurchase and retirement of common stock, Shares			(461)
Repurchase and retirement of common stock	(19,659)				(21,658)
Reclassification of mezzanine equity to permanent equity	784				784
Issuance of common stock for acquisitions	224				224
Issuance of common stock for acquisitions (in shares)			111
Issuance of common stock for employee stock purchase program (in shares)			185
Issuance of common stock for employee stock purchase program	8,723				8,723
Exercise of stock options	3,577				3,577
Exercise of stock options (in shares)			440
Vesting of restricted stock (in shares)			478
Stock-based compensation	85,196				85,196
Foreign currency translation, net of tax	(24,084)								(24,084)
Retirement related benefit plans, net of tax	3,032								3,032
Ending balance at Dec. 31, 2022	$ 569,736	$ (26,070)	$ 5	$ 3	$ 721,307	$ (50,009)	$ (121,577)	$ 23,939	$ (30,002)
Ending balance (in shares) at Dec. 31, 2022			52,277	27,745