CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 485,587	$ 385,303
Available-for-sale debt securities, at fair value (amortized cost of $512,518 in 2020 and $467,122 in 2019, allowance for credit losses of $0 in 2020 and $0 in 2019)	523,863	471,355
Held-to-maturity debt securities (fair value of $54,190 in 2020 and $63,156 in 2019, allowance for credit losses of $178 in 2020 and $0 in 2019)	53,324	62,531
Equity securities with readily determinable fair value	3,083	3,188
Mortgage loans held for sale, at fair value	46,867	19,224
Consumer loans held for sale, at fair value	3,298	598
Consumer loans held for sale, at the lower of cost or fair value	1,478	11,646
Loans (loans carried at fair value of $497 in 2020 and $998 in 2019)	4,813,103	4,433,151
Allowance for credit losses	(61,067)	(43,351)
Loans, net	4,752,036	4,389,800
Federal Home Loan Bank stock, at cost	17,397	30,831
Premises and equipment, net	39,512	46,196
Right-of-use assets	43,345	35,206
Goodwill	16,300	16,300
Other real estate owned	2,499	113
Bank owned life insurance	68,018	66,433
Other assets and accrued interest receivable	111,718	81,595
TOTAL ASSETS	6,168,325	5,620,319
Deposits:
Noninterest-bearing	1,890,416	1,033,379
Interest-bearing	2,842,765	2,752,629
Total deposits	4,733,181	3,786,008
Securities sold under agreements to repurchase and other short-term borrowings	211,026	167,617
Operating lease liabilities	44,340	36,530
Federal Home Loan Bank advances	235,000	750,000
Subordinated note	41,240	41,240
Other liabilities and accrued interest payable	80,215	74,680
Total liabilities	5,345,002	4,856,075
Commitments and contingent liabilities (Footnote 13)
STOCKHOLDERS' EQUITY
Preferred stock, no par value
Class A Common Stock, no par value, 30,000,000 shares authorized, 18,696,607 shares (2020) and 18,736,445 shares (2019) issued and outstanding; Class B Common Stock, no par value, 5,000,000 shares authorized, 2,199,455 shares (2020) and 2,206,412 shares (2019) issued and outstanding	4,899	4,907
Additional paid in capital	143,637	142,068
Retained earnings	666,278	614,171
Accumulated other comprehensive income	8,509	3,098
Total stockholders' equity	823,323	764,244
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 6,168,325	$ 5,620,319