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Debt and Financing Arrangements (Tables) | 3 Months Ended
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Mar. 31, 2019
Debt Disclosure [Abstract] |
Summary of Unsecured Credit Facility | Rates for the three months ended March 31, 2019 and 2018 were as follows:
|  | Three Months Ended |
|  | March 31, |
|  | 2019 |  |  | 2018 |
Weighted average rates |  | 3.18% |  |  | 2.98% |
Range of effective rates |  | 2.12% - 5.50% |  |  | 2.37% - 5.00% |

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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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