Subsequent Events - Additional Information (Details) - Share Repurchase Program ("2018 Program") - Subsequent Event	1 Months Ended
	Apr. 30, 2018 USD ($)
Subsequent Event [Line Items]
Stock repurchase program duration	1 year
Share repurchase program, beginning date	2018-05
Share repurchase program, end date	2019-05
Maximum
Subsequent Event [Line Items]
Repurchase of authorized common stock	$ 100,000,000