Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Investment securities held to maturity, fair value	$ 124,904	$ 150,932
Common stock, par value (in dollars per share)
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	50,498,410	47,486,250