Loans and Leases Held for Investment and Allowance for Loan and Lease Losses - (Summary of Age Analysis of Past Due Loans) (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	$ 30,579	$ 28,598
Current	970,743	879,894
Total loans and leases receivable	1,001,322	908,492
90 Days or More Past Due & Still Accruing	0	0
Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,856	1,261
30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	8,110	4,817
30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,624	5,655
Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	17,989	16,865
Commercial & Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	12,267	12,050
Current	361,161	322,396
Total loans and leases receivable	373,428	334,446
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	606	74
Commercial & Industrial | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	741	716
Commercial & Industrial | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,114	1,550
Commercial & Industrial | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	9,806	9,710
Commercial & Industrial | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	1,328	1,714
Total loans and leases receivable	1,328	1,714
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Agriculture | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Agriculture | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Agriculture | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Agriculture | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Death Care Management
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	9,989	9,684
Total loans and leases receivable	9,989	9,684
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Death Care Management | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Death Care Management | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Death Care Management | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Death Care Management | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Healthcare
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	5,797	6,688
Current	32,748	30,582
Total loans and leases receivable	38,545	37,270
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Healthcare | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	575	0
Commercial & Industrial | Healthcare | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	82	272
Commercial & Industrial | Healthcare | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	401	496
Commercial & Industrial | Healthcare | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,739	5,920
Commercial & Industrial | Independent Pharmacies
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,145	3,092
Current	87,898	80,585
Total loans and leases receivable	92,043	83,677
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Independent Pharmacies | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	42
Commercial & Industrial | Independent Pharmacies | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	293
Commercial & Industrial | Independent Pharmacies | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	133	408
Commercial & Industrial | Independent Pharmacies | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,012	2,349
Commercial & Industrial | Registered Investment Advisors
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	73,169	68,335
Total loans and leases receivable	73,169	68,335
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Registered Investment Advisors | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Registered Investment Advisors | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Registered Investment Advisors | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Registered Investment Advisors | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Veterinary Industry
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,325	2,270
Current	38,792	36,660
Total loans and leases receivable	41,117	38,930
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Veterinary Industry | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	31	32
Commercial & Industrial | Veterinary Industry | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	659	151
Commercial & Industrial | Veterinary Industry | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	580	646
Commercial & Industrial | Veterinary Industry | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,055	1,441
Commercial & Industrial | Other Industries
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	117,237	94,836
Total loans and leases receivable	117,237	94,836
90 Days or More Past Due & Still Accruing	0	0
Commercial & Industrial | Other Industries | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Other Industries | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Other Industries | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial & Industrial | Other Industries | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,383	311
Current	129,993	112,020
Total loans and leases receivable	132,376	112,331
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	231
Construction & Development | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,383	80
Construction & Development | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	448	311
Current	37,252	32,061
Total loans and leases receivable	37,700	32,372
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Agriculture | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	231
Construction & Development | Agriculture | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	448	80
Construction & Development | Agriculture | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Agriculture | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Death Care Management
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	4,433	3,956
Total loans and leases receivable	4,433	3,956
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Death Care Management | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Death Care Management | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Death Care Management | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Death Care Management | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Healthcare
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	33,849	30,467
Total loans and leases receivable	33,849	30,467
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Healthcare | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Healthcare | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Healthcare | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Healthcare | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Independent Pharmacies
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	1,034	2,013
Total loans and leases receivable	1,034	2,013
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Independent Pharmacies | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Independent Pharmacies | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Independent Pharmacies | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Independent Pharmacies | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Registered Investment Advisors
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	319	294
Total loans and leases receivable	319	294
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Registered Investment Advisors | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Registered Investment Advisors | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Registered Investment Advisors | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Registered Investment Advisors | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Veterinary Industry
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,935	0
Current	12,875	11,514
Total loans and leases receivable	14,810	11,514
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Veterinary Industry | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Veterinary Industry | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,935	0
Construction & Development | Veterinary Industry | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Veterinary Industry | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Other Industries
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	40,231	31,715
Total loans and leases receivable	40,231	31,715
90 Days or More Past Due & Still Accruing	0	0
Construction & Development | Other Industries | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Other Industries | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Other Industries | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Construction & Development | Other Industries | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	15,733	16,139
Current	353,079	332,007
Total loans and leases receivable	368,812	348,146
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,054	898
Commercial Real Estate | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,986	3,981
Commercial Real Estate | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,510	4,105
Commercial Real Estate | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	8,183	7,155
Commercial Real Estate | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	5,948	5,591
Total loans and leases receivable	5,948	5,591
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Agriculture | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Agriculture | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Agriculture | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Agriculture | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Death Care Management
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,607	1,611
Current	54,926	50,899
Total loans and leases receivable	56,533	52,510
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Death Care Management | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Death Care Management | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Death Care Management | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	184	188
Commercial Real Estate | Death Care Management | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,423	1,423
Commercial Real Estate | Healthcare
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	264	3,225
Current	112,427	111,056
Total loans and leases receivable	112,691	114,281
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Healthcare | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	43	0
Commercial Real Estate | Healthcare | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	100	0
Commercial Real Estate | Healthcare | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	121	3,180
Commercial Real Estate | Healthcare | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	45
Commercial Real Estate | Independent Pharmacies
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,168	529
Current	16,207	14,622
Total loans and leases receivable	18,375	15,151
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Independent Pharmacies | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Independent Pharmacies | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Independent Pharmacies | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Independent Pharmacies | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	2,168	529
Commercial Real Estate | Registered Investment Advisors
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	14,325	11,462
Total loans and leases receivable	14,325	11,462
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Registered Investment Advisors | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Registered Investment Advisors | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Registered Investment Advisors | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Registered Investment Advisors | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Veterinary Industry
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	11,694	10,774
Current	91,481	92,132
Total loans and leases receivable	103,175	102,906
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Veterinary Industry | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,011	898
Commercial Real Estate | Veterinary Industry | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,886	3,981
Commercial Real Estate | Veterinary Industry | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	1,205	737
Commercial Real Estate | Veterinary Industry | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	4,592	5,158
Commercial Real Estate | Other Industries
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Current	57,765	46,245
Total loans and leases receivable	57,765	46,245
90 Days or More Past Due & Still Accruing	0	0
Commercial Real Estate | Other Industries | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Other Industries | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Other Industries | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Real Estate | Other Industries | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	196	98
Current	126,510	113,471
Total loans and leases receivable	126,706	113,569
90 Days or More Past Due & Still Accruing	0	0
Commercial Land | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	196	58
Commercial Land | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	40
Commercial Land | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Land | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Land | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	196	98
Current	126,510	113,471
Total loans and leases receivable	126,706	113,569
90 Days or More Past Due & Still Accruing	0	0
Commercial Land | Agriculture | Less Than 30 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	196	58
Commercial Land | Agriculture | 30-89 Days Past Due & Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	40
Commercial Land | Agriculture | 30-89 Days Past Due & Not Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Commercial Land | Agriculture | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	0	0
Loans Insured or Guaranteed by US Government Authorities
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	19,200	17,200
Total loans and leases receivable	40,800	37,700
Loans Insured or Guaranteed by US Government Authorities | Greater Than 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	15,800	13,700
Loans Insured or Guaranteed by US Government Authorities | Financing Receivables 30 To 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Not Accruing & Past Due	$ 5,800	$ 6,800