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Commitments and Contingencies (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Sep. 17, 2018	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2012
Operating Leases
2019			$ 4,206
2020			3,760
2021			2,047
2022			1,282
2023			966
Thereafter			1,938
Total			14,199
Rent expense included in occupancy expense			4,600	$ 4,100
Visa Inc.
Loss Contingencies [Line Items]
Estimated amount due to class plaintiffs in Visa litigation					$ 4,000,000
Amended amount due to class plaintiffs in Visa litigation	$ 4,100,000
Visa deposit in escrow accounts		$ 600,000
Balance of escrow account for legal settlements maintained by Visa			$ 1,500,000

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