Loans - Non-accrual (Details) - USD ($) $ in Thousands	12 Months Ended
Loans - Non-accrual (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	$ 25,963	$ 17,362
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	20,423	10,358
Non-owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	769	618
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0	0
Owner occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	6,849	9,439
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	6,630	8,859
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	1,096
Interest Income Recognized on Non-accrual Loans	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	1,095
Non-owner occupied residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	0	441
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0	440
Commercial, industrial and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	401	2,978
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0	0
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	12,698	980
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	12,698	980
Equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	518	114
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0	0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	2,400	2,011
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	0	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	1,232	781
Interest Income Recognized on Non-accrual Loans	0	0
Amortized Cost Basis of Loans >= 90 days Past due but still accruing	0	0
Amortized Cost Basis of Non-accrual Loans without Related Allowance	$ 0	$ 79

LAKELAND BANCORP INC 10-K