Business Combinations - Estimated Fair Values of the Assets Acquired and the Liabilities Assumed (Details) - SB One Bancorp $ in Thousands	Jul. 31, 2020 USD ($)
Assets acquired
Cash and cash equivalents, net	$ 78,089
Available for sale debt securities	231,645
Held to maturity debt securities	12,381
Federal Home Loan Bank stock	11,216
Loans	1,766,115
Allowance for credit losses on PCD loans	(13,586)
Loans, net	1,752,529
Bank-owned life insurance	37,237
Banking premises and equipment	16,620
Accrued interest receivable	8,947
Goodwill	22,439
Other intangibles assets	9,965
Foreclosed assets, net	2,441
Other assets	12,199
Total assets acquired	2,195,708
Liabilities assumed:
Deposits	1,757,777
Borrowed funds	201,582
Subordinated debentures	25,074
Other liabilities	30,447
Total liabilities assumed	2,014,880
Net assets acquired	$ 180,828