Revolving Credit Facility (Narrative) (Details) - USD ($) $ in Millions		6 Months Ended
Aug. 19, 2019	Jun. 30, 2020
Facility A Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility		$ 15.0
Unused capacity, commitment fee percentage		0.25%
Facility A Revolving Credit Sub-Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility		$ 5.0
Unused capacity, commitment fee percentage		1.00%
Facility B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit facility		$ 30.0
Unused capacity, commitment fee percentage		0.25%
Payment of revolving credit facility	$ 30.0
London Interbank Offered Rate (LIBOR) [Member] \| Facility A Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate		2.50%
London Interbank Offered Rate (LIBOR) [Member] \| Facility B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Unused capacity, commitment fee percentage		3.00%

The effective interest rate during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

+ 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

- Definition

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

+ References

No definition available.

+ Details

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- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or 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 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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- Details

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- Details

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