Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Investment securities held to maturity, fair value	$ 113,241	$ 124,904
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	50,594,196	50,498,410
Common stock, shares outstanding (in shares)	50,463,161	50,498,410
Treasury shares (in shares)	131,035	0