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Subsequent Events - Narrative (Details) - Griswold - Subsequent Event
$ in Millions
Jul. 06, 2018
USD ($)
Subsequent Event [Line Items]  
Business acquisition, percentage of voting interests acquired 100.00%
Consideration transferred $ 77.9
Earn out payment 3.0
Revolving Credit Facility  
Subsequent Event [Line Items]  
Outstanding borrowings $ 82.5