SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Net income available to common shareholders	$ 376,913	$ 261,988	$ 161,441
Weighted average number of common shares outstanding (in shares)	69,432	69,256	58,462
Effect of dilutive stock options (in shares)	61	23	69
Effect of dilutive restricted stock awards (in shares)	143	129	83
Effect of performance share units (in shares)	125	18	0
Weighted average number of common shares outstanding used to calculate diluted earnings per share (in shares)	69,761	69,426	58,614