Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized cost, at fair value	$ 608,567	$ 546,640
Held-to-maturity, at fair value	69,468	62,560
Loans held-for-sale, at fair value	52,394	56,097
Unamortized discounts and debt issuance costs	$ 2,395	$ 2,472
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	4,913,779	4,913,779
Preferred stock, shares issued (in shares)	0	0
Preferred stock, share outstanding (in shares)	0	0
Voting Common Stock
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	45,000,000	45,000,000
Common stock, shares issued (in shares)	9,741,800	10,170,778
Common stock, shares outstanding (in shares)	9,741,800	10,170,778
Nonvoting Common Stock
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	86,221	86,221
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0