LONG-TERM DEBT - Convertible Notes (Details)						3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 27, 2022	Apr. 15, 2020 USD ($) $ / shares	Mar. 15, 2020 USD ($) $ / shares	Feb. 04, 2020 USD ($)	Jan. 29, 2020 $ / shares	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 05, 2021	Aug. 31, 2021 USD ($)	Mar. 10, 2021
Long-term debt
Outstanding Principal						$ 344,834,000		$ 344,834,000
Interest rate (as a percent)												0.73%	0.77%	0.22%
Stock split ratio	3
Unamortized debt discount of notes						444,000		444,000
Gain (Loss) on Extinguishment of Debt							$ (641,000)		$ (641,000)
Outstanding amount						343,196,000		343,196,000		$ 278,273,000			$ 15,000,000.0
4.50% Convertible Senior Notes due 2020
Long-term debt
Outstanding Principal			$ 75,000,000.0
Interest rate (as a percent)			4.50%
Debt instrument conversion ratio			14.5136
Conversion price per share (in dollars per share) | $ / shares			$ 68.90
Threshold principal amount for adjusted conversion price			$ 1,000
Proceeds from private placement				$ 5,900,000
Outstanding amount				75,000,000.0
3.875% Convertible Senior Notes due 2025
Long-term debt
Outstanding Principal				17,600,000		$ 51,034,000		$ 51,034,000
Debt conversion amount				57,400,000
Interest rate (as a percent)						3.875%		3.875%		3.875%
Proceeds from private placement				11,700,000
Repurchase of notes				5,900,000
Outstanding amount				$ 11,700,000		$ 50,590,000		$ 50,590,000		$ 47,469,000
2025 Notes maturing on April 15, 2025
Long-term debt
Debt instrument conversion ratio		12.7910				20.0390
Conversion price per share (in dollars per share) | $ / shares		$ 78.18				$ 49.90		$ 49.90
Threshold principal amount for adjusted conversion price		$ 1,000				$ 1,000
Dividends Declared and Paid - Common Stock (in dollars per share) | $ / shares		$ 0.13
Premium initial conversion price					20.00%
Closing share price (in dollars per share) | $ / shares					$ 65.15
Sinking fund provided						0		$ 0
Unamortized debt discount of notes										1,600,000	$ 2,600,000
Gain (Loss) on Extinguishment of Debt										(2,900,000)	1,100,000
Repurchase of notes										$ 11,400,000	$ 12,500,000
Outstanding amount						51,000,000.0		51,000,000.0
Convertible Debt | 2025 Notes maturing on April 15, 2025
Long-term debt
Threshold principal amount for adjusted conversion price								1,000
Unamortized debt discount of notes						$ 400,000		$ 400,000