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Acquisitions - Additional Information (Details) $ in Thousands			87 Months Ended
	Jan. 10, 2020 USD ($) Branch Business	Oct. 15, 2018 USD ($) Branch shares	Oct. 15, 2018 USD ($) Acquisition Branch	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 58,563	$ 58,383
Number of acquisitions \| Acquisition			5
First American International Corp.
Business Acquisition [Line Items]
Cash consideration		$ 34,837
Business acquisition, stock value of acquirer		$ 69,602
Business acquisition, common shares issued \| shares		3,011,762
Goodwill		$ 28,443	$ 28,443
Business Combination, Identifiable assets acquired		849,962	849,962
Deposits		$ 629,703	$ 629,703
First American International Corp. \| New York
Business Acquisition [Line Items]
Number of branches operated \| Branch		9	9
PGB \| Subsequent Event
Business Acquisition [Line Items]
Cash consideration	$ 32,900
Business acquisition, date	Jan. 10, 2020
PGB \| Illinois \| Subsequent Event
Business Acquisition [Line Items]
Business Combination, Identifiable assets acquired	$ 217,600
Deposits	$ 192,300
Number of acquisitions \| Business	1
Number of branches \| Branch	3