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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- Definition

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

+ References

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

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Balance Type:	na
Period Type:	duration

- Definition

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

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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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Period Type:	instant

- Definition

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

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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.

+ References

No definition available.

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Period Type:	duration

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Period Type:

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Balance Type:
Period Type:

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Long-Term Loan, Net of Discount and Issuance Costs - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 07, 2018	Dec. 31, 2018	Mar. 31, 2018
2018 Credit Facility
Line Of Credit Facility [Line Items]
Term loan, principal amount	$ 150,000
Interest on term loan credit facility	9.00%
Interest, frequency of payment	quarterly
Term loan credit facility, expiation date	Feb. 07, 2023
Debt issuance costs, net		$ 731
Term loan credit facility, maturity term		5 years
2018 Credit Facility \| Prior to February 7, 2021
Line Of Credit Facility [Line Items]
Pre-payment fee, percentage	2.00%
2018 Credit Facility \| February 7, 2021 to February 7, 2022
Line Of Credit Facility [Line Items]
Pre-payment fee, percentage	1.00%
Term Loan
Line Of Credit Facility [Line Items]
Debt issuance costs, net			$ 1,399
Debt instrument, un-amortized discount			$ 1,160