Fair Value - Carrying Amount and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Securities available for sale	$ 584,857	$ 542,313
Carrying Amount
ASSETS
Cash and cash equivalents	555,941	192,974
Securities available for sale	584,857	542,313
Trading securities	6,164	9,809
Loans held for sale	3,668	930
Net loans	3,318,923	2,784,562
FHLB and other restricted interests	26,815	27,868
Interest rate swaps	4,493	1,877
Accrued interest receivable	21,299	11,486
LIABILITIES
Deposits	(4,022,705)	(3,102,327)
FHLB and other borrowings	(169,327)	(227,907)
Subordinated debentures	(70,620)	(70,620)
Interest rate swaps	(5,327)	(2,362)
Accrued interest payable	(1,514)	(1,597)
Total Fair Value
ASSETS
Cash and cash equivalents	555,941	192,974
Securities available for sale	584,857	542,313
Trading securities	6,164	9,809
Loans held for sale	3,697	933
Net loans	3,290,329	2,765,133
Interest rate swaps	4,493	1,877
Accrued interest receivable	21,297	11,486
LIABILITIES
Deposits	(4,037,394)	(3,106,798)
FHLB and other borrowings	(174,846)	(230,679)
Subordinated debentures	(62,394)	(64,084)
Interest rate swaps	(5,327)	(2,632)
Accrued interest payable	(1,514)	(1,597)
Quoted Prices in Active Markets for Identical Assets \| Total Fair Value
ASSETS
Cash and cash equivalents	555,941	192,974
Securities available for sale	6,112	964
Trading securities	6,113	9,758
Loans held for sale	0	0
Net loans	0	0
Interest rate swaps	0	0
Accrued interest receivable	33	6
LIABILITIES
Deposits	(3,543,338)	(2,674,511)
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs \| Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	578,323	538,554
Trading securities	51	51
Loans held for sale	3,697	933
Net loans	0	0
Interest rate swaps	4,493	1,877
Accrued interest receivable	3,103	3,238
LIABILITIES
Deposits	(494,056)	(432,287)
FHLB and other borrowings	(174,846)	(230,679)
Subordinated debentures	(62,394)	(64,084)
Interest rate swaps	(5,327)	(2,632)
Accrued interest payable	(1,514)	(1,597)
Significant Unobservable Inputs \| Total Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	422	2,795
Trading securities	0	0
Loans held for sale	0	0
Net loans	3,290,329	2,765,133
Interest rate swaps	0	0
Accrued interest receivable	18,161	8,242
LIABILITIES
Deposits	0	0
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	$ 0	$ 0

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Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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