Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.10.0.1
Fair Value Measurements - Narrative (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Revolving Facility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Revolving line of credit outstanding borrowings $ 50,000,000 $ 0