Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Narrative (Details)

v3.19.2
Revenue Recognition - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Contract term     Revenues are calculated based on the number of transactions processed monthly and will vary from month to month based on actual usage of these transaction-based services over the contract term, which is typically one year in duration.    
On demand revenue     $ 97,300,000    
Deferred commissions period of benefit 3 years   3 years    
Amortized commission costs $ 2,000,000.0 $ 1,000,000.0 $ 3,800,000 $ 1,800,000  
Capitalized commissions impairment loss 0 $ 0 0 $ 0  
Capitalized commissions costs - current $ 8,746,000   $ 8,746,000   $ 6,679,000
Remaining performance obligation percentage 69.00%   69.00%    
Period for satisfying 75% of remaining obligation     24 months    
Capitalized commissions costs - noncurrent $ 8,588,000   $ 8,588,000   $ 7,757,000
On demand          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Contract term     Certain clients commit to purchase our solutions for terms ranging from two to seven years.    
Remaining performance obligation $ 461,300,000   $ 461,300,000