Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Equity-Based Compensation (Details)

v3.19.1
Summary of Significant Accounting Policies - Equity-Based Compensation (Details) - 2013 Plan [Member] - Restricted Stock Units [Member]
3 Months Ended
Mar. 31, 2019
Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance target rate 0.00%
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance target rate 200.00%