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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allowance for doubtful accounts, Beginning balance			$ (2,674)
less allowance for doubtful accounts	$ (422)	$ (262)	(1,025)	$ (723)
Allowances for doubtful accounts	(2,049)	(1,046)	(5,176)	(3,162)
Total charges			(1,025)
Allowance for doubtful accounts, Ending balance	(3,699)		(3,699)
Medicaid [Member]
less allowance for doubtful accounts	(15)	(10)	(40)	(22)
Allowances for doubtful accounts	(15)	(10)	(40)	(22)
Medicare [Member]
less allowance for doubtful accounts	(121)	(56)	(296)	(183)
Allowances for doubtful accounts	(811)	(373)	(1,979)	(1,217)
Third Party Payer [Member]
less allowance for doubtful accounts	(286)	(196)	(689)	(518)
Allowances for doubtful accounts	$ (950)	$ (490)	$ (2,313)	$ (1,297)

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- Definition

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+ References

No definition available.

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- Definition

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+ References

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-Publisher FASB
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+ References

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-Publisher FASB
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-Topic 326
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+ References

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