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DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Derivative Financial Instruments (Details) - Interest rate swap agreement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jun. 12, 2017
Derivative instruments
Gain (Loss) resulted from changes in fair values of the interest rate swap agreement	$ 2	$ 16
Line of credit
Derivative instruments
Interest rate swap agreement				$ 8,000
Level 2
Derivative instruments
Fair values of interest rate swap agreement	7		$ 3
Prepaid Expenses and Other Current Assets
Derivative instruments
Fair values of interest rate swap agreement	$ 7		$ 3

X

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB
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-Topic 210
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-Publisher FASB
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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

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