CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Adjustments due to adoption of new accounting standard	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Earnings	Accumulated Earnings Adjustments due to adoption of new accounting standard	Noncontrolling Interest
Balance, beginning of period, shares at Dec. 31, 2021		32,495
Balance, beginning of period at Dec. 31, 2021	$ 440,244	$ 705	$ 488,303		$ (930,106)	$ (38,353)	$ 916,060		$ 3,635
Net Income (Loss)	44,060						44,060
Unrealized gain on short-term investments, net of tax	7					7
Foreign currency translation adjustments	(20,483)					(20,483)
Total comprehensive income	23,584
Repurchase of common stock	(96,604)	$ (1)	(8,675)		(87,928)
Repurchase of common stock, shares		(1,635)
Issuance of common stock pursuant to employee stock purchase plan	2,969		2,969
Issuance of common stock pursuant to employee stock purchase plan, shares		57
Issuance of restricted common stock pursuant to stock-based compensation plans		$ 6	(6)
Issuance of restricted common stock pursuant to stock-based compensation plans, shares		544
Cancellation of restricted common stock issued pursuant to stock-based compensation plans		$ (2)	2
Cancellation of restricted common stock issued pursuant to stock-based compensation plans, shares		(192)
Stock-based compensation expense	27,243		27,243
Settlement of convertible debt securities, net of tax	(4,845)		(4,845)
Dividends	(33,707)						(33,707)
Write-off of noncontrolling interest	(3,635)								$ (3,635)
Balance, ending of period, shares at Dec. 31, 2022		31,269
Balance, ending of period at Dec. 31, 2022	355,249	$ 708	495,189	$ (9,802)	(1,018,034)	(58,829)	936,215	$ 9,802
Net Income (Loss)	66,246						66,246
Unrealized gain on short-term investments, net of tax	0
Foreign currency translation adjustments	8,416					8,416
Total comprehensive income	74,662
Repurchase of common stock	(128,179)	$ (2)	(10,156)		(118,021)
Repurchase of common stock, shares		(2,369)
Issuance of common stock pursuant to employee stock purchase plan	3,284		3,284
Issuance of common stock pursuant to employee stock purchase plan, shares		74
Issuance of restricted common stock pursuant to stock-based compensation plans		$ 7	(7)
Issuance of restricted common stock pursuant to stock-based compensation plans, shares		666
Cancellation of restricted common stock issued pursuant to stock-based compensation plans, shares		(99)
Stock-based compensation expense	28,990		28,990
Purchase of capped call transactions, net of tax	(26,353)		(26,353)
Dividends	$ (34,327)						(34,327)
Balance, ending of period, shares at Dec. 31, 2023	29,541	29,541
Balance, ending of period at Dec. 31, 2023	$ 273,326	$ 713	490,947		(1,136,055)	(50,413)	968,134
Net Income (Loss)	86,852						86,852
Unrealized gain on short-term investments, net of tax	0
Foreign currency translation adjustments	(11,877)					(11,877)
Total comprehensive income	74,975
Repurchase of common stock	(67,531)	$ (1)	(9,361)		(58,169)
Repurchase of common stock, shares		(1,362)
Issuance of common stock pursuant to employee stock purchase plan	3,072		3,072
Issuance of common stock pursuant to employee stock purchase plan, shares		73
Issuance of restricted common stock pursuant to stock-based compensation plans	(1)	$ 8	(9)
Issuance of restricted common stock pursuant to stock-based compensation plans, shares		777
Cancellation of restricted common stock issued pursuant to stock-based compensation plans		$ (2)	2
Cancellation of restricted common stock issued pursuant to stock-based compensation plans, shares		(175)
Stock-based compensation expense	33,564		33,564
Dividends	$ (34,836)						(34,836)
Balance, ending of period, shares at Dec. 31, 2024	28,854	28,854
Balance, ending of period at Dec. 31, 2024	$ 282,569	$ 718	$ 518,215		$ (1,194,224)	$ (62,290)	$ 1,020,150