SEGMENT REPORTING - Revenue and Long-lived Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	$ 945,957	$ 980,625
United States
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	855,200	882,639
Canada
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	65,437	68,623
EMEA
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	15,604	18,042
Other
Revenue and Long-Lived Assets Outside of the United States
Total long- lived assets	$ 9,716	$ 11,321