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Revolving Credit Facilities (Tables) | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Information Regarding Company's Revolving Credit Facilities | The following table discloses certain information regarding the Company’s Revolving Credit Facilities (as defined below) (in millions):
|  | Carrying Value at December 31, |  |  | Weighted-Average Interest Rate(A) at December 31, |  | Maturity Date at
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  | December 31, 2018
Unsecured Credit Facility |  | $ | 100.0 |  |  | $ | — |  |  | 3.7% |  |  | N/A |  | September 2021
PNC Facility |  |  | — |  |  |  | — |  |  | N/A |  |  | N/A |  | September 2021
(A) | Interest rate on variable-rate debt was calculated using the base rate and spreads effective at December 31, 2018.

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to 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. + References 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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