Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value of asset after deduction of liability.

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The balance of financing receivables that were individually evaluated for impairment.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Carrying amount as of the balance sheet date of assets other than real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance.

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Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair Value of Financial Instruments (Assets and liabilities on recurring and non-recurring basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 857,433		$ 841,857
Trading securities	412		360
Money market investments	7,485		4,930	$ 6,991
Derivative assets	26		347
Servicing assets	10,134		10,716
Foreclosed real estate	29,509	$ 30,865	33,768	$ 40,551	$ 40,314	$ 44,174
Other repossessed assets	2,507		2,986
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	857,433		841,857
Trading securities	412		360
Derivative assets	26		347
Derivative liabilities	(985)		(333)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets	10,134		10,716
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	857,433		841,857
Trading securities	412		360
Money market investments	7,485		4,930
Derivative assets	26		347
Servicing assets	10,134		10,716
Derivative liabilities	(985)		(333)
Total	874,505		857,877
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0		0
Trading securities	0		0
Money market investments	7,485		4,930
Derivative assets	0		0
Servicing assets	0		0
Derivative liabilities	0		0
Total	7,485		4,930
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	857,433		841,857
Trading securities	412		360
Money market investments	0		0
Derivative assets	26		347
Servicing assets	0		0
Derivative liabilities	(985)		(333)
Total	856,886		842,231
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0		0
Trading securities	0		0
Money market investments	0		0
Derivative assets	0		0
Servicing assets	10,134		10,716
Derivative liabilities	0		0
Total	10,134		10,716
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired commercial loan	83,780		81,976
Foreclosed real estate	29,509		33,768
Other repossessed assets	2,507		2,986
Total	115,796		118,730
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired commercial loan	0		0
Foreclosed real estate	0		0
Other repossessed assets	0		0
Total	0		0
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired commercial loan	0		0
Foreclosed real estate	0		0
Other repossessed assets	0		0
Total	0		0
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired commercial loan	83,780		81,976
Foreclosed real estate	29,509		33,768
Other repossessed assets	2,507		2,986
Total	$ 115,796		$ 118,730