Revenue Recognition In Scope and Out of Scope Revenue Streams (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Fees and Commissions on Debit Cards	$ 20,187	$ 18,780	$ 14,955
Noninterest Income	88,637	80,331	64,599
Trust income	7,901	7,098	5,366
Service charges on deposit accounts	18,175	18,579	15,869
Insurance and retail brokerage commissions	7,426	8,807	7,964
Other income	6,790	7,677	6,372
Out-Of-Scope of Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Noninterest Income	30,258	21,734	15,418
In-Scope of Topic 606 [Member]
Disaggregation of Revenue [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	982	1,005	1,389
Noninterest Income	58,379	58,597	49,181
Other income	$ 3,708	$ 4,328	$ 3,638

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Fees and Commissions on Depositor Accounts

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Fees and Commissions on Trust and Fiduciary Accounts

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230

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Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
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The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

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Amount of revenue earned, classified as other, excluding interest income.

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