Concentration Risk, Customer Contract, Term

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- Definition

Concentration Risk, Threshold, Percentage

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- Definition

Grant Funds, CARES Act

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional.

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- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Apr. 30, 2020
Concentration Risk [Line Items]
CARES Act grant						$ 11,700
Rebate receivable	$ 39,900		$ 39,900		$ 35,200
Investments in equity-method investees	19,900		19,900		$ 17,000
Proportionate share of earnings in equity-method investees	$ 1,700	$ 1,000	$ 2,891	$ 1,574
Capital distribution received from investment		$ 0		$ 500
Revenue from Contract with Customer Benchmark \| Company's Largest Payer
Concentration Risk [Line Items]
Concentration risk	16.00%	16.00%	16.00%	15.00%
Contract term			2 years
Revenue from Contract with Customer Benchmark \| Governmental Programs
Concentration Risk [Line Items]
Concentration risk	12.00%	12.00%	12.00%	12.00%
Accounts Receivable \| Governmental Programs
Concentration Risk [Line Items]
Concentration risk	13.00%				15.00%
Cost of Goods and Service, Product and Service Benchmark \| Medical Supply Vendors
Concentration Risk [Line Items]
Concentration risk	64.00%	72.00%	65.00%	72.00%