PREMISES AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PREMISES AND EQUIPMENT, NET
Premises and equipment, gross	$ 181,187	$ 232,693
Less: Accumulated depreciation and amortization	(156,661)	(187,062)
Total	24,526	45,631
Depreciation and amortization expense	18,509	30,799	$ 36,447
Computer hardware and software
PREMISES AND EQUIPMENT, NET
Premises and equipment, gross	144,608	182,215
Leasehold improvements
PREMISES AND EQUIPMENT, NET
Premises and equipment, gross	23,800	29,781
Furniture and fixtures
PREMISES AND EQUIPMENT, NET
Premises and equipment, gross	8,775	13,313
Office equipment and other
PREMISES AND EQUIPMENT, NET
Premises and equipment, gross	$ 4,004	$ 7,384

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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