Business Combinations - Schedule of Supplemental Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings per share, Pro forma:
Net interest income, Pro forma		$ 84,302
Provision for loan losses, Pro forma		1,095
Non-interest income, Pro forma		10,963
Non-interest expense, Pro forma		58,535
Provision (benefit) for income taxes, Pro forma		6,506
Net income, Pro forma		$ 29,129
Fully diluted, Pro forma (in usd per share)		$ 0.47
Two River Bancorp Inc.
Earnings per share, Actual:
Net interest income, Actual	$ 10,650
Provision for loan losses, Actual	210
Non-interest income, Actual	558
Non-interest expense, Actual	11,630
Provision (benefit) for income taxes, Actual	(167)
Net income, Actual	(465)
Country Bank Holding Company, Inc
Earnings per share, Actual:
Net interest income, Actual	6,507
Provision for loan losses, Actual	126
Non-interest income, Actual	162
Non-interest expense, Actual	5,488
Provision (benefit) for income taxes, Actual	589
Net income, Actual	$ 466
Capital Bank
Earnings per share, Actual:
Net interest income, Actual		$ 3,172
Provision for loan losses, Actual		70
Non-interest income, Actual		199
Non-interest expense, Actual		6,439
Provision (benefit) for income taxes, Actual		(6)
Net income, Actual		$ (3,132)