GOODWILL, CORE DEPOSIT PREMIUM AND OTHER INTANGIBLE ASSETS (Estimated future amortization expense for amortizable intangible assets) (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Future amortization expense for amortizable intangible assets [Line Items]
Six months ending December 31, 2020	$ 6,601
Year ending December 31,
2021	9,727
2022	8,003
2023	6,922
2024	5,662
2025	4,709
Thereafter	6,856
Total	48,480
Core Deposit Intangibles
Future amortization expense for amortizable intangible assets [Line Items]
Six months ending December 31, 2020	4,918
Year ending December 31,
2021	8,691
2022	7,102
2023	6,202
2024	5,108
2025	4,265
Thereafter	6,539
Total	42,825
Customer Relationship Intangibles
Future amortization expense for amortizable intangible assets [Line Items]
Six months ending December 31, 2020	18
Year ending December 31,
2021	35
2022	34
2023	34
2024	33
2025	32
Thereafter	0
Total	186
Mortgage Servicing Rights
Future amortization expense for amortizable intangible assets [Line Items]
Six months ending December 31, 2020	1,524
Year ending December 31,
2021	740
2022	635
2023	529
2024	423
2025	317
Thereafter	317
Total	4,485
Commercial Servicing Rights
Future amortization expense for amortizable intangible assets [Line Items]
Six months ending December 31, 2020	141
Year ending December 31,
2021	261
2022	232
2023	157
2024	98
2025	95
Thereafter	0
Total	$ 984

Future amortization expense for amortizable intangible assetse [Line Items]

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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