| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| INTEREST INCOME: | | | | | | | | |
| Interest and fees on loans | 74.3 | 66.4 | 63.5 | 54.9 | 50.5 | 42.1 | 35.8 | 29.0 |
| Interest-bearing deposits with banks | 0.4 | 0.4 | 0.4 | 0.4 | 0.3 | 0.2 | 0.2 | 0.1 |
| |
| Investment securities: | | | | | | | | |
| Taxable | 5.6 | 3.8 | 4.1 | 4.7 | 3.8 | 3.1 | 3.7 | 3.1 |
| Nontaxable | 2.5 | 2.2 | 1.9 | 1.5 | 1.7 | 2.4 | 3.0 | 3.2 |
| Dividends | 0.6 | 0.4 | 0.4 | 0.5 | 0.4 | 0.3 | 0.3 | 0.2 |
| TOTAL INTEREST INCOME | 83.4 | 73.2 | 70.3 | 62.0 | 56.8 | 48.1 | 43.0 | 35.7 |
| |
| INTEREST EXPENSE: | | | | | | | | |
| Deposits | 7.3 | 5.8 | 6.9 | 9.2 | 6.9 | 4.6 | 4.2 | 4.1 |
| Borrowed funds | 3.9 | 1.3 | 1.3 | 2.8 | 2.7 | 1.2 | 0.8 | 0.7 |
| TOTAL INTEREST EXPENSE | 11.2 | 7.1 | 8.1 | 12.0 | 9.6 | 5.8 | 5.0 | 4.8 |
| NET INTEREST INCOME | 72.1 | 66.1 | 62.2 | 49.9 | 47.2 | 42.3 | 38.0 | 30.8 |
| Provision for credit losses | 1.7 | 1.6 | 2.4 | 1.7 | 1.9 | 2.5 | 1.5 | 0.5 |
| NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES | 70.5 | 64.6 | 59.8 | 48.3 | 45.3 | 39.7 | 36.4 | 30.4 |
| |
| NON-INTEREST INCOME: | | | | | | | | |
| Service charges | 5.3 | 4.8 | 4.2 | 4.7 | | | | |
| Trust | 0.8 | 0.9 | 0.8 | 0.8 | | | | |
| Brokerage and insurance | 1.9 | 1.6 | 1.3 | 1.1 | | | | |
| Gains on loans sold | 0.3 | 1.3 | 2.2 | 0.5 | 0.4 | 0.6 | 0.4 | 0.4 |
| Earnings on bank owned life insurance | 0.9 | 1.8 | 0.7 | 0.6 | 0.6 | 0.7 | 0.7 | 0.6 |
| Other | 0.8 | 1.4 | 2.0 | 0.6 | 0.6 | 0.5 | 0.6 | 0.4 |
| TOTAL NON-INTEREST INCOME | 9.7 | 12.3 | 11.4 | 8.4 | 7.7 | 8.7 | 7.9 | 7.4 |
| |
| NON-INTEREST EXPENSES: | | | | | | | | |
| Salaries and employee benefits | 27.8 | 25.9 | 24.2 | 20.5 | 19.1 | 17.7 | 16.5 | 12.5 |
| Occupancy | 3.1 | 3.0 | 2.6 | 2.2 | 2.1 | 2.0 | 1.9 | 1.4 |
| Furniture and equipment | 0.6 | 0.5 | 0.8 | 0.7 | 0.5 | 0.6 | 0.6 | 0.5 |
| Professional fees | 1.9 | 1.5 | 1.5 | 1.4 | 1.9 | 1.3 | | 0.8 |
| FDIC insurance | 0.7 | 0.5 | 0.5 | 0.1 | 0.4 | 0.4 | 0.6 | 0.5 |
| Pennsylvania shares tax | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.7 | 0.7 | 0.7 |
| Amortization of intangibles | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | |
| Merger and acquisition | | | 2.2 | 0.5 | | 0.2 | | 1.1 |
| Software expenses | 1.4 | 1.3 | 1.2 | 0.9 | 0.9 | 0.8 | | |
| Other | 8.1 | 7.3 | 6.5 | 5.7 | 5.3 | 5.0 | 6.5 | 4.9 |
| TOTAL NON-INTEREST EXPENSES | 44.7 | 41.6 | 40.8 | 33.3 | 31.6 | 29.3 | 28.7 | 23.4 |
| Income (loss) before provision for income taxes | 35.5 | 35.3 | 30.4 | 23.3 | | | | |
| Provision for income taxes (benefit) | 6.4 | 6.2 | 5.3 | 3.8 | 3.4 | 6.0 | 3.0 | 2.7 |
| NET INCOME (LOSS) | 29.1 | 29.1 | 25.1 | 19.5 | 18.0 | 13.0 | 12.6 | 11.6 |
| |
| PER COMMON SHARE DATA: | | | | | | | | |
| Net (Loss) Income - Basic (in dollars per share) | $7.32 | $7.31 | $6.46 | $5.42 | $5.04 | $3.67 | $3.57 | $3.60 |
| Net (Loss) Income - Diluted (in dollars per share) | $7.32 | $7.31 | $6.46 | $5.41 | $5.04 | $3.67 | $3.57 | $3.60 |
| |
| Cash Dividends Paid (in dollars per share) | $1.90 | $1.84 | $1.88 | $1.74 | $1.71 | $1.64 | $1.57 | $1.63 |
| |
| Number of shares used in computation - basic (in shares) | 4.0 | 4.0 | 3.9 | 3.6 | 3.6 | 3.6 | 3.5 | 3.2 |
| Number of shares used in computation - diluted (in shares) | 4.0 | 4.0 | 3.9 | 3.6 | 3.6 | 3.6 | 3.5 | 3.2 |