Debt Instrument, Basis Spread On Variable Rate, Increase

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- Definition

Debt Instrument, Covenant, Net Leverage Ratio, Maximum

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Debt Instrument, Debt Default, Fee Amount

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- Definition

Debt Instrument, Required Prepayment

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- Definition

Line Of Credit Facility, Accordion Feature, Increase Limit

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Line Of Credit Facility, Accordion Feature, Increase Limit, Percentage Of Consolidated EBITDA

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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The average effective interest rate during the reporting period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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- Definition

Amount of the required periodic payments applied to principal.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Nominal or face amount used to calculate payment on derivative.

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The number of derivative instruments of a particular group held by the entity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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- Definition

Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount of long-term debt classified as other.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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DEBT - Narrative (Details)					3 Months Ended		4 Months Ended	6 Months Ended
DEBT - Narrative (Details)	Jan. 01, 2020 USD ($)	Sep. 04, 2019	Apr. 26, 2019	Jun. 22, 2017 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Sep. 04, 2019	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	May 06, 2020 USD ($)	Mar. 31, 2017 USD ($) interest_rate_cap_agreement
Debt Instrument [Line Items]
Repayment of debt during 2020					$ 22,187,000			$ 22,187,000
Repayment of debt during second quarter of 2021					$ 94,949,000			$ 94,949,000
Maximum
Debt Instrument [Line Items]
Interest rate					4.52%			4.52%
Interest rate swap agreements
Debt Instrument [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss) into income					$ 0
Unrealized pre-tax (gain) loss on derivatives					(198,000)	$ 1,241,000		$ 1,950,000	$ 1,102,000
Interest rate swap agreements \| Designated as hedge \| Cash flow hedge
Debt Instrument [Line Items]
Interest rate swap and cap agreements notional amount											$ 133,000,000
Interest rate cap agreements
Debt Instrument [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss) into income					0
Unrealized pre-tax (gain) loss on derivatives					$ 1,000	136,000		$ 1,058,000	1,025,000
Interest rate cap agreements \| Designated as hedge \| Cash flow hedge
Debt Instrument [Line Items]
Interest rate swap and cap agreements notional amount											$ 147,000,000
Number of interest rate swap agreements \| interest_rate_cap_agreement											2
Credit Agreement 2017, First Amendment
Debt Instrument [Line Items]
Financial covenant, net leverage ratio, maximum					7			7
Credit Agreement 2017, First Amendment \| Revolving Credit Facility
Debt Instrument [Line Items]
Fees related to debt amendment						$ 6,021,000			$ 6,021,000
Third-Party Clinic Loan Agreements
Debt Instrument [Line Items]
Repayment of debt during 2020										$ 4,274,000
Repayment of debt during second quarter of 2021										5,318,000
Other long-term debt					$ 90,846,000			$ 90,846,000
Third-Party Clinic Loan Agreements \| Minimum
Debt Instrument [Line Items]
Interest rate					3.10%			3.10%
Third-Party Clinic Loan Agreements \| Maximum
Debt Instrument [Line Items]
Interest rate					7.68%			7.68%
First Lien Credit Agreement
Debt Instrument [Line Items]
Principal payments								$ 4,400,000
Line of Credit \| 2017 Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate amount of borrowing capacity				$ 100,000,000
Uncommitted incremental accordion facility, amount				$ 125,000,000
Uncommitted incremental accordion facility, percentage of consolidated EBITDA				100.00%
Undrawn commitment fee								0.50%
Pay down of line of credit					$ 27,000,000
Revolving credit facility borrowings outstanding					$ 73,000,000			$ 73,000,000
Interest rate at period end					4.94%			4.94%
Financial covenant, net leverage ratio, maximum					6			6
Line of Credit \| Credit Agreement 2017, First Amendment \| Revolving Credit Facility
Debt Instrument [Line Items]
Interest rate margin							0.50%
Line of Credit \| Credit Agreement 2017, First Amendment \| Revolving Credit Facility \| Eurodollar one-month rate
Debt Instrument [Line Items]
Interest rate margin							5.25%
Line of Credit \| Credit Agreement 2017, First Amendment \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Interest rate margin							4.25%
Line of Credit \| Credit Agreement 2017, First Amendment \| Revolving Credit Facility \| Alternate Base Rate Or London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate margin		1.75%
Term loans \| 2017 Credit Agreement
Debt Instrument [Line Items]
Principal payments	$ 2,200,000
Debt face amount				$ 440,000,000
Required prepayment								$ 0
Interest rate								5.18%
Term loans \| Credit Agreement 2017, First Amendment \| Federal funds effective rate
Debt Instrument [Line Items]
Interest rate margin							0.50%
Term loans \| Credit Agreement 2017, First Amendment \| Eurodollar one-month rate
Debt Instrument [Line Items]
Interest rate margin							1.00%
Applicable margin, increase		5.00%
Term loans \| Credit Agreement 2017, First Amendment \| ABR rate
Debt Instrument [Line Items]
Applicable margin, increase							4.50%
Term loans \| Credit Agreement 2017, First Amendment \| LIBOR rate, adjusted for changes in Eurodollar reserves
Debt Instrument [Line Items]
Applicable margin, increase							5.50%
Term loans \| Credit Agreement 2017, First Amendment \| Base Rate
Debt Instrument [Line Items]
Applicable margin, increase		4.00%
Term loans \| Credit Agreement 2017, First Amendment \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt redemption price, percentage			1.00%
Term loans \| Credit Agreement 2017, First Amendment \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt redemption price, percentage			2.00%
Term loans \| First Lien Credit Agreement, Second Amendment \| ABR rate
Debt Instrument [Line Items]
Applicable margin, increase				2.25%
Term loans \| First Lien Credit Agreement, Second Amendment \| LIBOR rate, adjusted for changes in Eurodollar reserves
Debt Instrument [Line Items]
Applicable margin, increase				3.25%
Term loans \| Term B loans
Debt Instrument [Line Items]
Debt face amount											$ 440,000,000
Third Parties to Clinic Loan Agreements \| Third-Party Clinic Loan Agreements
Debt Instrument [Line Items]
Repayment of debt during 2020										7,589,000
Repayment of debt during second quarter of 2021										$ 10,506,000