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v3.19.2

Debt and Financing Arrangements (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018 | Jun. 30, 2019 | Oct. 15, 2018
Debt Instrument [Line Items] |  |  |  |
Interest expense | $ 300,000 | $ 800,000 |  |
Revolving Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount |  |  |  | $ 150,000,000
Long-term debt |  |  | $ 0 |
Credit Agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Additional borrowings available |  |  |  | 100,000,000
Swing Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Additional borrowings available |  |  |  | 20,000,000
Letter of Credit |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Additional borrowings available |  |  |  | $ 20,000,000

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