Revenue Recognition (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]
Noninterest income in scope of Topic 606	$ 753	$ 617	$ 2,264	$ 1,489
Noninterest income out of scope of Topic 606	13,943	9,894	47,584	28,856
Total noninterest income	14,696	10,511	49,848	30,345
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Noninterest income in scope of Topic 606	337	275	985	741
Debit card and interchange income
Disaggregation of Revenue [Line Items]
Noninterest income in scope of Topic 606	150	167	472	459
Consulting income
Disaggregation of Revenue [Line Items]
Noninterest income in scope of Topic 606	25	0	25	0
Other
Disaggregation of Revenue [Line Items]
Noninterest income in scope of Topic 606	$ 108	$ 87	$ 379	$ 144