Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Private Placement	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated Deficit Private Placement	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2019			254,842,949
Beginning balance at Dec. 31, 2019	$ 334,619		$ 2,548	$ 408,667	$ (23,927)	$ (52,669)		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	126,521					126,521
Other comprehensive income (loss)	(2,306)				(2,306)
Class B Common Stock follow-on offering, net of expenses (in shares)			9,603,965
Class B Common Stock follow-on offering, net of expenses	294,429	$ (57)	$ 96	294,333			$ (57)
Dividends declared	(424,018)					(424,018)
Repurchase of Class B Common Stock under approved program (in shares)			(549,834)
Repurchases of Class B Common Stock under approved program	(6,970)		$ (5)			(6,965)
Shares issued in connection with deferred compensation plan, net (in shares)			3,081,607
Shares issued in connection with deferred compensation plan, net	(4,625)		$ 31			(4,656)
Deferred compensation plan elective participant deferrals	3,530			3,530
Payment of shareholder Put and Call rights (in shares)			(128,007)
Payment of shareholder Put and Call rights	(1,454)		$ (1)			(1,453)
Stock option exercises, net (in shares)			4,060,839
Stock option exercises, net	4,356		$ 41	9,070		(4,755)
Shares issued for stock grants, net (in shares)			21,956
Shares issued for stock grants	319			319
Stock-based compensation expense	25,194			25,194
Shares related to restricted stock, net (in shares)			1,221,029
Shares related to restricted stock, net	(7,939)		$ 12	0		(7,951)
Ending balance (in shares) at Dec. 31, 2020			272,154,504
Ending balance at Dec. 31, 2020	341,599		$ 2,722	741,113	(26,233)	(376,003)		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	93,192					93,192
Other comprehensive income (loss)	(65,541)				(65,541)
Shares issued related to acquisition (in shares)			3,141,342
Shares issued related to acquisition	182,390		$ 31	182,359
Purchase of capped call options, net of tax of $12,871	(38,734)			(38,734)
Dividends declared	(33,537)					(33,537)
Shares issued in connection with deferred compensation plan, net (in shares)			2,378,645
Shares issued in connection with deferred compensation plan, net	(69,007)		$ 24			(69,031)
Deferred compensation plan elective participant deferrals	2,619			2,619
Deferred compensation plan modification	(4,739)			(4,739)
Shares issued in connection with Executive Bonus Plan, net (in shares)			238,755
Shares issued in connection with Executive Bonus Plan, net	12,214		$ 2	20,951		(8,739)
Shares issued in connection with employee stock purchase plan (in shares)			104,716
Shares issued in connection with employee stock purchase plan	3,408		$ 1	3,845		(438)
Stock option exercises, net (in shares)			4,587,053
Stock option exercises, net	(32,180)		$ 46	5,559		(37,785)
Shares issued for stock grants, net (in shares)			7,824
Shares issued for stock grants	450			450
Stock-based compensation expense	24,382			24,382
Shares related to restricted stock, net (in shares)			(86,120)
Shares related to restricted stock, net	(7,294)		$ (1)	0		(7,293)
Ending balance (in shares) at Dec. 31, 2021			282,526,719
Ending balance at Dec. 31, 2021	409,222		$ 2,825	937,805	(91,774)	(439,634)		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	174,780					174,780
Other comprehensive income (loss)	2,034				2,034
Shares issued related to acquisition (in shares)			185,178
Shares issued related to acquisition	0		$ 2	(2)
Dividends declared	(34,353)					(34,353)
Repurchase of Class B Common Stock under approved program (in shares)			(896,126)
Repurchases of Class B Common Stock under approved program	(28,250)		$ (9)			(28,241)
Shares issued in connection with deferred compensation plan, net (in shares)			3,541,375
Shares issued in connection with deferred compensation plan, net	(24,246)		$ 35	(27)		(24,254)
Deferred compensation plan elective participant deferrals	6,580			6,580
Shares issued in connection with Executive Bonus Plan, net (in shares)			445,050
Shares issued in connection with Executive Bonus Plan, net	16,728		$ 5	21,920		(5,197)
Shares issued in connection with employee stock purchase plan (in shares)			307,406
Shares issued in connection with employee stock purchase plan	$ 10,062		$ 3	10,332		(273)
Stock option exercises, net (in shares)	900,000		2,613,659
Stock option exercises, net	$ (850)		$ 26	8,312		(9,188)
Shares issued for stock grants, net (in shares)			13,632
Shares issued for stock grants	450			450
Stock-based compensation expense	45,100			45,100
Shares related to restricted stock, net (in shares)			277,594
Shares related to restricted stock, net	(4,492)		$ 3	(4)		(4,491)
Other	(15)					(15)
Non-controlling interest acquired	704							704
Ending balance (in shares) at Dec. 31, 2022			289,014,487
Ending balance at Dec. 31, 2022	$ 573,454		$ 2,890	$ 1,030,466	$ (89,740)	$ (370,866)		$ 704