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Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Deferred revenue, revenue recognized	$ 200	$ 100	$ 31,600	$ 28,500
Account Services
Disaggregation of Revenue [Line Items]
Operating revenues	178,298	186,623	599,703	597,350
Account Services | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Operating revenues	114,418	120,427	378,492	381,738
Account Services | Transferred over time
Disaggregation of Revenue [Line Items]
Operating revenues	63,880	66,196	221,211	215,612
Processing and Settlement Services
Disaggregation of Revenue [Line Items]
Operating revenues	55,633	43,954	233,945	206,574
Processing and Settlement Services | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Operating revenues	54,616	43,040	229,263	203,888
Processing and Settlement Services | Transferred over time
Disaggregation of Revenue [Line Items]
Operating revenues	$ 1,017	$ 914	$ 4,682	$ 2,686

X

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045

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+ References

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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