PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Premises and equipment [Abstract]
Premises and equipment, gross	$ 89,088	$ 90,348
Less accumulated depreciation and amortization	66,671	65,368
Net book value	22,417	24,980
Depreciation expense	3,112	3,437	$ 3,703
Land
Premises and equipment [Abstract]
Premises and equipment, gross	4,803	4,803
Buildings
Premises and equipment [Abstract]
Premises and equipment, gross	41,408	41,332
Projects in progress
Premises and equipment [Abstract]
Premises and equipment, gross	113	31
Equipment and furniture
Premises and equipment [Abstract]
Premises and equipment, gross	37,007	38,008
Leasehold improvements
Premises and equipment [Abstract]
Premises and equipment, gross	$ 5,757	$ 6,174

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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