CONSOLIDATED STATEMENT OF INCOME - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
INTEREST AND DIVIDEND INCOME:
Loans, including fees	$ 83,291,000	$ 58,682,000	$ 53,232,000
Investment securities:
Taxable	5,346,000	3,634,000	3,281,000
Tax-exempt	517,000	823,000	655,000
Dividend and other interest income	2,441,000	1,789,000	1,246,000
TOTAL INTEREST AND DIVIDEND INCOME	91,595,000	64,928,000	58,414,000
INTEREST EXPENSE:
Deposits	22,131,000	3,690,000	5,545,000
Short-term borrowings	8,401,000	1,007,000	9,000
Long-term borrowings	6,099,000	2,451,000	3,142,000
TOTAL INTEREST EXPENSE	36,631,000	7,148,000	8,696,000
NET INTEREST INCOME	54,964,000	57,780,000	49,718,000
(Recovery) provision for loan credit losses	(927,000)	1,910,000	640,000
Recovery for off balance sheet credit exposures	(552,000)	0	0
TOTAL (RECOVERY) PROVISION FOR CREDIT LOSSES	(1,479,000)	1,910,000	640,000
NET INTEREST INCOME AFTER (RECOVERY) PROVISION FOR CREDIT LOSSES	56,443,000	55,870,000	49,078,000
NON-INTEREST INCOME:
Net debt securities (losses) gains, available for sale	(193,000)	(219,000)	699,000
Net equity securities gains (losses)	15,000	(146,000)	(40,000)
Bank-owned life insurance	1,063,000	664,000	916,000
Gain on sale of loans	1,046,000	1,131,000	2,474,000
Other	930,000	931,000	838,000
TOTAL NON-INTEREST INCOME	8,375,000	8,713,000	11,669,000
NON-INTEREST EXPENSE:
Salaries and employee benefits	25,062,000	24,267,000	23,014,000
Occupancy	3,168,000	3,080,000	3,209,000
Furniture and equipment	3,392,000	3,288,000	3,522,000
Software amortization	843,000	840,000	868,000
Pennsylvania shares tax	1,082,000	1,452,000	1,350,000
Professional fees	2,953,000	2,434,000	2,432,000
Federal Deposit Insurance Corporation deposit insurance	1,578,000	938,000	963,000
Marketing	684,000	690,000	545,000
Intangible amortization	117,000	154,000	191,000
Goodwill impairment	0	653,000	0
Other	5,617,000	5,202,000	4,811,000
TOTAL NON-INTEREST EXPENSE	44,496,000	42,998,000	40,905,000
INCOME BEFORE INCOME TAX PROVISION	20,322,000	21,585,000	19,842,000
INCOME TAX PROVISION	3,714,000	4,163,000	3,794,000
CONSOLIDATED NET INCOME	16,608,000	17,422,000	16,048,000
Earnings attributable to noncontrolling interest	0	0	15,000
NET INCOME ATTRIBUTABLE TO PENNS WOODS BANCORP, INC.	$ 16,608,000	$ 17,422,000	$ 16,033,000
EARNINGS PER SHARE - BASIC (in dollars per share)	$ 2.34	$ 2.47	$ 2.27
EARNINGS PER SHARE - DILUTED (in dollars per share)	$ 2.34	$ 2.47	$ 2.27
WEIGHTED AVERAGE SHARES OUTSTANDING - BASIC (in shares)	7,112,450	7,059,437	7,061,818
WEIGHTED AVERAGE SHARES OUTSTANDING - DILUTED (in shares)	7,112,450	7,059,437	7,061,818
Service charges
NON-INTEREST INCOME:
Service charges, insurance commissions, brokerage commissions, and debit card income	$ 2,090,000	$ 2,103,000	$ 1,703,000
Insurance commissions
NON-INTEREST INCOME:
Service charges, insurance commissions, brokerage commissions, and debit card income	529,000	491,000	553,000
Brokerage commissions
NON-INTEREST INCOME:
Service charges, insurance commissions, brokerage commissions, and debit card income	575,000	620,000	851,000
Loan broker income
NON-INTEREST INCOME:
Service charges, insurance commissions, brokerage commissions, and debit card income	992,000	1,674,000	2,164,000
Debit card income
NON-INTEREST INCOME:
Service charges, insurance commissions, brokerage commissions, and debit card income	$ 1,328,000	$ 1,464,000	$ 1,511,000