Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.20.2
Stock-Based Compensation - Narrative (Details) - Employee Stock Purchase Plan
1 Months Ended
May 30, 2017
USD ($)
purchase_period
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
ESPP offering period 24 months
Number of purchase periods | purchase_period 4
Maximum percentage in payroll deductions to acquire shares of common stock 15.00%
Maximum deductible fair market value of shares available for employee to purchase per calendar year | $ $ 25,000
Maximum number of shares available for employee to purchase per offering period (in shares) | shares 10,000