Quarterly report pursuant to Section 13 or 15(d)

Net Income per Share - Additional Information (Details)

v3.19.1
Net Income per Share - Additional Information (Details) - $ / shares
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
May 23, 2017
Earnings Per Share [Abstract]      
Shares excluded from dilutive shares outstanding because their effect was anti-dilutive (in shares) (443,489) (659,745)  
Warrants strike price (in dollars per share)     $ 57.58
ClickPay      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Contingently issuable shares (in shares) 196,000