GOODWILL AND OTHER INTANGIBLE ASSETS - Amortization expense of intangible assets - (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
GOODWILL AND OTHER INTANGIBLE ASSETS
Amortization of Intangible Assets	$ 191,000	$ 172,000	$ 386,000	$ 344,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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