Net Income Per Share - Reconciliation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net Income
Net income available to common stockholders	$ 48,586	$ 49,469
Diluted net income per share	$ 48,586	$ 49,469
Weighted-Average Shares
Net income available to common stockholders (in shares)	53,412,762	53,930,200
Effect of potentially dilutive stock options and restricted stock awards (in shares)	203,106	203,422
Diluted net income per share (in shares)	53,615,868	54,133,622
Per Share Amount
Net income available to common stockholders (in dollars per share)	$ 0.91	$ 0.92
Diluted net income per share (in dollars per share)	$ 0.91	$ 0.91