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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2020
Accounting Policies [Abstract]  
Summary of Components Used to Calculate Basic and Diluted Earnings Per Share
Presented below is a summary of the components used to calculate basic and diluted earnings per share.
Years Ended December 31,
(dollars and shares in thousands)202020192018
Net income available to common shareholders$261,988 $161,441 $121,027 
Weighted average number of common shares outstanding69,256 58,462 43,142 
Effect of dilutive stock options23 69 6 
Effect of dilutive restricted stock awards129 83 100 
Effect of performance stock units18 — — 
Weighted average number of common shares outstanding used to calculate diluted earnings per share69,426 58,614 43,248