Business Combinations - Schedule of Supplemental Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	11 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Capital Bank
Business Acquisition [Line Items]
Net interest income, Actual	$ 17,090
Provision for loan losses, Actual	385
Non-interest income, Actual	1,456
Non-interest expense, Actual	12,482
Provision (benefit) for income taxes, Actual	1,193
Net income, Actual	$ 4,486
Sun Bancorp, Inc.
Business Acquisition [Line Items]
Net interest income, Actual		$ 63,889
Provision for loan losses, Actual		1,215
Non-interest income, Actual		7,961
Non-interest expense, Actual		35,184
Provision (benefit) for income taxes, Actual		7,090
Net income, Actual		$ 28,361
Ocean Shore Holdings Co.
Business Acquisition [Line Items]
Net interest income, Pro forma			$ 257,703	$ 266,014	$ 260,520
Provision for loan losses, Pro forma			1,636	3,070	3,239
Non-interest income, Pro forma			42,277	37,554	40,914
Non-interest expense, Pro forma			190,934	214,713	201,605
Provision (benefit) for income taxes, Pro forma			18,798	15,100	26,111
Net income, Pro forma			$ 88,612	$ 70,685	$ 70,479
Fully diluted, Pro forma			$ 1.74	$ 1.36	$ 1.37