Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Stock-Based Compensation Expense (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies - Stock-Based Compensation Expense (Details)
12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Compensation expense recognized period 6 years