Debt Instrument, number of quarterly payments.

No definition available.

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- Definition

Debt instrument repurchase price percentage.

+ References

No definition available.

+ Details

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- Definition

Debt modification expenses.

+ References

No definition available.

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Balance Type:	debit
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- Definition

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

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-Name Accounting Standards Codification
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- Definition

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

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Period Type:	duration

- Definition

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

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- 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.

+ References

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

+ Details

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- Definition

Description of debt redemption features under terms of the debt agreement.

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- Definition

Start date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

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- Definition

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

+ References

+ Details

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Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Balance Type:	credit
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Long-Term Debt (Details Textual)			1 Months Ended	9 Months Ended
Long-Term Debt (Details Textual)	Apr. 14, 2022	Apr. 15, 2019 USD ($)	Apr. 30, 2019 USD ($)	Sep. 30, 2019 USD ($) Installment	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Outstanding Amount				$ 1,135,248,000		$ 971,043,000
Debt financing cost and fees				8,367,000		3,537,000
Repayment of debt				220,000,000	$ 6,000,000
Loss on extinguishment of debt				$ (9,150,000)
Senior Secured First Lien Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 900,000,000
Senior Secured First Lien Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						$ 200,000,000	100,000,000
Senior Secured First Lien Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 800,000,000
Credit Facility [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate				5.40%
Repayment of debt		$ 18,000,000	$ 18,000,000
Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Undrawn				$ 200,000,000
Line of Credit Facility, Expiration Date				Oct. 20, 2022
Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Outstanding Amount				$ 0
Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Outstanding Amount				$ 772,000,000
Debt Instrument, Maturity Date				Oct. 20, 2024
Debt Instrument, Number of Quarterly Payments \| Installment				27
Debt Instrument, Periodic Payment				$ 2,000,000
Debt Instrument, Commencement Date of Quarterly Payments				Mar. 31, 2018
Debt Instrument, Final Installment				$ 746,000,000
Senior Secured Second Lien Credit Facility [Member]
Debt Instrument [Line Items]
Repayment of debt		200,000,000
Senior Secured Second Lien Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt			(5,500,000)
Debt modification expenses			$ 3,700,000
Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 375,000,000
Debt instrument interest stated percentage		7.625%
Debt instrument frequency of periodic payment		semi-annually
Debt financing cost and fees		$ 6,700,000
Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument redemption description				The 2026 Notes may be redeemed, in whole or in part, at any time during the 12 months beginning on April 15, 2022 at a redemption price of 103.813%, during the 12 months beginning on April 15, 2023 at a redemption price of 101.906%, and at any time on or after April 15, 2024 at a redemption price of 100%, in each case plus accrued and unpaid interest, if any, thereon to the redemption date.
Senior Notes due 2026 [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Debt instrument repurchase price percentage	101.00%
Senior Notes due 2026 [Member] \| Debt Instrument, Redemption, Period One [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage	107.625%
Senior Notes due 2026 [Member] \| Debt Instrument, Redemption, Period One [Member] \| 12 Months Beginning on April 15, 2022 [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage	103.813%
Debt instrument redemption period start date	Apr. 15, 2022
Senior Notes due 2026 [Member] \| Debt Instrument, Redemption, Period Two [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage	100.00%
Senior Notes due 2026 [Member] \| Debt Instrument, Redemption, Period Two [Member] \| 12 Months Beginning on April 15, 2023 [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage	101.906%
Debt instrument redemption period start date	Apr. 15, 2023
Senior Notes due 2026 [Member] \| Debt Instrument, Redemption, Period Three [Member] \| On or After April 15, 2024 [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage	100.00%
Debt instrument redemption period start date	Apr. 15, 2024
Senior Notes due 2026 [Member] \| Maximum [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Debt instrument redemption percentage	40.00%