CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	True Up Costs December 2020	Common Stock	Additional Paid-In Capital	Additional Paid-In Capital True Up Costs December 2020	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Translation adjustment	$ (6,454)					$ (6,454)
Balance at Dec. 31, 2020	1,529,150		$ 548	$ 1,460,748		2,085	$ 65,769
Beginning Balance (in shares) at Dec. 31, 2020			54,760,837
Net income	65,683						65,683
Issuance of common stock for debt conversion	1		$ 0	1
Issuance of common stock for debt conversion (in shares)			3
Exercise of stock options and vesting of stock units	860		$ 2	858
Exercise of stock options and vesting of stock units (in shares)			208,641
Stock-based compensation expense	13,684			13,684
True-up of costs related to the December 2020 issuance of common stock		$ 145			$ 145
Balance at Jun. 30, 2021	1,603,069		$ 550	1,475,436		(4,369)	131,452
Ending Balance (in shares) at Jun. 30, 2021			54,969,481
Translation adjustment	3,125					3,125
Balance at Mar. 31, 2021	1,556,216		$ 549	1,467,942		(7,494)	95,219
Beginning Balance (in shares) at Mar. 31, 2021			54,899,245
Net income	36,233						36,233
Exercise of stock options and vesting of stock units	352		$ 1	351
Exercise of stock options and vesting of stock units (in shares)			70,236
Stock-based compensation expense	7,143			7,143
Balance at Jun. 30, 2021	1,603,069		$ 550	1,475,436		(4,369)	131,452
Ending Balance (in shares) at Jun. 30, 2021			54,969,481
Translation adjustment	(20,205)					(20,205)
Balance at Dec. 31, 2021	1,750,067		$ 553	1,572,340		(16,886)	194,060
Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021	(21,817)			(39,070)			17,253
Beginning Balance (in shares) at Dec. 31, 2021			55,321,457
Net income	96,825						96,825
Issuance of common stock for debt conversion	(5)		$ 0	(5)
Issuance of common stock for debt conversion (in shares)			12
Exercise of stock options and vesting of stock units	463		$ 3	460
Exercise of stock options and vesting of stock units (in shares)			222,727
Tax withholding on vesting of restricted stock units	(14,759)		$ (1)	(14,758)
Tax withholding on vesting of restricted stock units (in shares)			(78,278)
Stock-based compensation expense	14,900			14,900
Other	(105)			(105)
Balance at Jun. 30, 2022	1,805,364		$ 555	1,533,762		(37,091)	308,138
Ending Balance (in shares) at Jun. 30, 2022			55,465,918
Translation adjustment	(15,517)					(15,517)
Balance at Mar. 31, 2022	1,766,401		$ 554	1,529,144		(21,574)	258,277
Beginning Balance (in shares) at Mar. 31, 2022			55,429,046
Net income	49,861						49,861
Issuance of common stock for debt conversion	(3)		$ 0	(3)
Issuance of common stock for debt conversion (in shares)			4
Exercise of stock options and vesting of stock units	166		$ 1	166
Exercise of stock options and vesting of stock units (in shares)			51,737
Tax withholding on vesting of restricted stock units	(2,448)		$ 0	(2,448)
Tax withholding on vesting of restricted stock units (in shares)			(14,869)
Stock-based compensation expense	6,985			6,985
Other	(82)			(82)
Balance at Jun. 30, 2022	$ 1,805,364		$ 555	$ 1,533,762		$ (37,091)	$ 308,138
Ending Balance (in shares) at Jun. 30, 2022			55,465,918