Note 4 - Loans and the Allowance for Credit Losses - Aging Analysis of the Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Loans, Total	$ 1,505,733	$ 1,515,793
90 Days and Still Accruing	48	0
Nonaccrual	14,119	15,089
Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	8,296	7,668
Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	5,861	923
Financial Asset, Past Due [Member]
Loans, Total	28,324	23,680
Financial Asset, Not Past Due [Member]
Loans, Total	1,477,409	1,492,113
Commercial Portfolio Segment [Member] \| Commercial Loans [Member]
Loans, Total	163,567	168,696
90 Days and Still Accruing	0	0
Nonaccrual	735	611
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	1,925	2,809
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	528	572
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Financial Asset, Past Due [Member]
Loans, Total	3,188	3,992
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	160,379	164,704
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member]
Loans, Total	146,005	157,768
90 Days and Still Accruing	48	0
Nonaccrual	10,064	10,509
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	1,112	395
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	92	0
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member] \| Financial Asset, Past Due [Member]
Loans, Total	11,316	10,904
Commercial Portfolio Segment [Member] \| Agricultural Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	134,689	146,864
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans, Total	1,015,786	1,003,944
90 Days and Still Accruing	0	0
Nonaccrual	1,523	2,000
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	2,490	1,160
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	5,033	0
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Past Due [Member]
Loans, Total	9,046	3,160
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	1,006,740	1,000,784
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Loans, Total	40,912	40,022
90 Days and Still Accruing	0	0
Nonaccrual	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	1,043	1,466
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Financial Asset, Past Due [Member]
Loans, Total	1,043	1,466
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	39,869	38,556
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans, Total	32,337	33,142
90 Days and Still Accruing	0	0
Nonaccrual	211	215
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	0	15
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	15	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Past Due [Member]
Loans, Total	226	230
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	32,111	32,912
Residential Portfolio Segment [Member] \| Equity Lines of Credit [Member]
Loans, Total	56,002	54,594
90 Days and Still Accruing	0	0
Nonaccrual	914	988
Residential Portfolio Segment [Member] \| Equity Lines of Credit [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	859	835
Residential Portfolio Segment [Member] \| Equity Lines of Credit [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	47	191
Residential Portfolio Segment [Member] \| Equity Lines of Credit [Member] \| Financial Asset, Past Due [Member]
Loans, Total	1,820	2,014
Residential Portfolio Segment [Member] \| Equity Lines of Credit [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	54,182	52,580
Consumer Portfolio Segment [Member]
Loans, Total	51,124	57,627
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans, Total	35,057	40,020
90 Days and Still Accruing	0	0
Nonaccrual	641	745
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	791	943
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	126	159
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Financial Asset, Past Due [Member]
Loans, Total	1,558	1,847
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	33,499	38,173
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Loans, Total	16,067	17,607
90 Days and Still Accruing	0	0
Nonaccrual	31	21
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans, Total	76	45
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans, Total	20	1
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Financial Asset, Past Due [Member]
Loans, Total	127	67
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Financial Asset, Not Past Due [Member]
Loans, Total	$ 15,940	$ 17,540

PLUMAS BANCORP 10-Q