Consolidated interest coverage ratio that must be maintained under the Credit Agreement.

No definition available.

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- Definition

Consolidated leverage ratio that must be maintained under the Credit Agreement.

+ References

No definition available.

+ Details

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- Definition

The annual required amortization percentage applied to principal.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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-SubTopic 470
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- 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.

+ Details

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- 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

- References

No definition available.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Long-Term Debt, New Credit Agreement (Details) $ in Thousands		12 Months Ended
	Apr. 18, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Long-term Debt, Current and Noncurrent [Abstract]
Proceeds from debt		$ 582,398	$ 67,000	$ 233,721
New Credit Agreement [Member] \| Maximum [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Consolidated leverage ratio		2.25
New Credit Agreement [Member] \| Minimum [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Consolidated interest coverage ratio		3.00
Term Loan Facility [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Original principal amount	$ 400,000	$ 400,000
Term of loan		5 years
Frequency of payment		Quarterly
Term Loan Facility [Member] \| First Year [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Annual amortization percentage	5.00%
Term Loan Facility [Member] \| Second Year [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Annual amortization percentage	5.00%
Term Loan Facility [Member] \| Third Year [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Annual amortization percentage	7.50%
Term Loan Facility [Member] \| Fourth Year [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Annual amortization percentage	7.50%
Term Loan Facility [Member] \| Fifth Year [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Annual amortization percentage	10.00%
Term Loan Facility [Member] \| LIBOR [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Basis spread on variable rate	2.25%
Revolving Credit Facility [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Borrowing capacity	$ 350,000
Term of loan		5 years
Proceeds from debt	$ 78,500
Revolving Credit Facility [Member] \| LIBOR [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Basis spread on variable rate	2.25%