Stockholders' Equity (Details) - shares	Oct. 29, 2020	Sep. 30, 2020	Jan. 21, 2015
2015 Repurchase Plan
Share repurchase program
Stock repurchase program, number of shares authorized to be repurchased			20,000,000.0
Stock repurchase program, remaining number of shares authorized to be repurchased		3,600,000
Subsequent event | 2020 Repurchase Plan
Share repurchase program
Stock repurchase program, number of shares authorized to be repurchased	20,000,000.0