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Business Combination, Term

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The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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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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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of lessee's right to use underlying asset under operating lease.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities.

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Amount of each individual error being corrected in the correcting adjustment.

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Amount of income tax benefit for remeasurement of deferred tax liability from change in tax rate pursuant to Tax Cuts and Jobs Act.

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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)		1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2015	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Concentration Risk [Line Items]
Allowance for doubtful accounts	$ 0				$ 0	$ 0
Unbilled receivables	43,000,000				68,700,000	43,000,000
Prepaid expenses and other current assets	37,525,000				51,306,000	37,525,000
Change in income tax benefit							$ 17,000,000
Renewal term length		1 year
Contract term		3 years
Operating lease liabilities					78,633,000			$ 67,000,000
Operating lease right-of-use asset	$ 0				63,502,000	0		$ 59,900,000
Gain on business casualty loss					$ 626,000	$ (3,549,000)	$ 0
Revenue from Contract with Customer Benchmark \| Company's Largest Payer
Concentration Risk [Line Items]
Concentration risk					16.00%	17.00%	17.00%
Revenue from Contract with Customer Benchmark \| Governmental Programs
Concentration Risk [Line Items]
Concentration risk					12.00%	12.00%	14.00%
Accounts Receivable \| Governmental Programs
Concentration Risk [Line Items]
Concentration risk	13.00%				12.00%
Cost of Goods and Service, Product and Service Benchmark \| Medical Supply Vendors
Concentration Risk [Line Items]
Concentration risk					70.00%	66.00%	73.00%
Overstatement Of Prior Period Goodwill
Concentration Risk [Line Items]
Amount of misstatement being corrected					$ (6,500,000)
Understatement Of Net Loss
Concentration Risk [Line Items]
Amount of misstatement being corrected			$ (6,500,000)	$ (6,500,000)
Understatement Of Long Term Debt, Net
Concentration Risk [Line Items]
Amount of misstatement being corrected			$ (6,500,000)	$ (6,500,000)
Hurricane
Concentration Risk [Line Items]
Inventory write-down						$ 2,900,000
Insurance proceeds						800,000
Prepaid expenses and other current assets	$ 1,000,000					$ 1,000,000
Infusion pumps
Concentration Risk [Line Items]
Intangible asset useful life (in years)					7 years
Computer Software
Concentration Risk [Line Items]
Intangible asset useful life (in years)					5 years
Minimum \| Referral sources
Concentration Risk [Line Items]
Intangible asset useful life (in years)					15 years
Minimum \| Trademarks/Names
Concentration Risk [Line Items]
Intangible asset useful life (in years)					2 years
Minimum \| Other amortizable intangible assets
Concentration Risk [Line Items]
Intangible asset useful life (in years)					2 years
Minimum \| Equipment
Concentration Risk [Line Items]
Intangible asset useful life (in years)					3 years
Maximum \| Referral sources
Concentration Risk [Line Items]
Intangible asset useful life (in years)					20 years
Maximum \| Trademarks/Names
Concentration Risk [Line Items]
Intangible asset useful life (in years)					15 years
Maximum \| Other amortizable intangible assets
Concentration Risk [Line Items]
Intangible asset useful life (in years)					9 years
Maximum \| Equipment
Concentration Risk [Line Items]
Intangible asset useful life (in years)					13 years
Inventories \| Hurricane
Concentration Risk [Line Items]
Insurance proceeds					$ 3,000,000
Gain on business casualty loss					$ 2,000,000