| In millions, except per share items | Mar-31-18 | Mar-31-17 | Mar-31-16 | Mar-31-15 | Mar-31-14 | Mar-31-13 | Mar-31-12 | Mar-31-11 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | S-1/A |
| Cash flows from operating activities | | | | | | | | |
| Interest received | | | | | | | | |
| Fees and commissions received | | | | | | | | |
| Interest paid | -4.4 | -4.0 | -2.0 | -1.7 | -1.9 | -2.9 | -4.0 | |
| Cash paid to suppliers and employees | -13.1 | -11.2 | -9.3 | -8.2 | -9.0 | -7.0 | -6.5 | |
| Origination of loans held for sale | | -2.0 | -4.0 | -3.3 | -2.2 | -3.8 | -1.6 | |
| Proceeds from sale of loans held for sale | | 2.3 | 4.3 | 2.8 | 2.4 | 3.6 | 1.6 | |
| Income taxes payable (refundable) | 0.0 | -1.5 | | 0.6 | 1.3 | -0.8 | | |
| Net cash provided by operating activities | 1.7 | 0.5 | 1.4 | 0.3 | 2.2 | 2.0 | 2.1 | |
| |
| Cash flows from investing activities | | | | | | | | |
| Proceeds from maturing and called securities available for sale, including principal pay downs | 15.1 | 30.7 | 21.8 | 24.0 | 21.3 | 50.8 | | |
| Proceeds from sale of investment securities available for sale | 11.6 | 6.0 | 19.2 | 11.8 | 13.2 | 16.2 | 17.5 | |
| Purchase of investment securities available for sale | -1.2 | -50.6 | -8.0 | -23.2 | -27.6 | -88.0 | -57.2 | |
| Loans made, net of principal repayments | 2.3 | -10.5 | -8.0 | -15.8 | 13.3 | | | |
| Purchase of premises and equipment | -0.7 | -0.3 | -0.1 | -0.1 | -0.1 | -0.3 | -0.4 | |
| Proceeds from sale of premises and equipment | 0.8 | 0.4 | 0.5 | 0.0 | 0.2 | 0.0 | | |
| Net cash provided (used) by investing activities | -25.7 | -34.8 | 12.7 | -3.7 | 21.0 | -14.9 | 11.3 | |
| |
| Cash flows from financing activities | | | | | | | | |
| Net increase (decrease) in Deposits | -7.3 | -10.5 | 38.3 | -16.5 | -21.3 | -20.9 | -17.5 | |
| Advances by borrowers for taxes and insurance | 0.1 | 0.8 | 0.5 | -0.1 | -0.1 | -0.1 | | |
| Proceeds from borrowings | 40.0 | 11.6 | | 6.0 | | | | |
| Payments of borrowings | -15.0 | -5.5 | -2.0 | | | | | |
| Interest rate swap on FHLB borrowings | 0.3 | -0.1 | | | | | | |
| Net cash (used) provided by financing activities | 18.0 | -3.8 | 36.7 | -13.1 | -24.1 | 11.6 | -17.5 | |
| Net increase (decrease) in cash and cash equivalents | -6.0 | -38.1 | 50.8 | -16.4 | -0.9 | -1.3 | -4.2 | |
| Cash and cash equivalents at beginning of period | 29.4 | 67.4 | 120.4 | 33.1 | 34.0 | 35.2 | 42.8 | |
| Cash and cash equivalents at end of period | 23.4 | 29.4 | 67.4 | 120.4 | 33.1 | 34.0 | 35.2 | |
| |
| Reconciliation of net income (loss) to net cash provided by operating activities | | | | | | | | |
| Net income (loss) | -6.0 | -0.9 | -0.1 | -0.3 | -1.2 | -0.2 | 0.1 | |
| |
| Adjustments to reconcile net income (loss) to net cash from operating activities | | | | | | | | |
| Amortization of premiums on certificates of deposit | 0.0 | 0.0 | 0.0 | | | | | |
| Amortization of premiums on securities | 0.8 | 0.8 | 0.4 | 0.5 | 0.7 | 1.5 | 0.8 | |
| Loss on sale of foreclosed real estate | 0.0 | 0.0 | | | 0.2 | 0.0 | 0.0 | |
| Loan discount accretion | -0.2 | -0.8 | | | | | | |
| Deposit premium amortization | -0.4 | -0.6 | -0.1 | | 0.0 | 0.0 | -0.1 | |
| Borrowing premium amortization | -0.4 | -0.6 | -0.1 | | | | | |
| Core deposit intangible asset amortization | 0.1 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | |
| Premises and equipment depreciation and amortization | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.3 | |
| Gain on sale of premises and equipment | -0.1 | 0.0 | -0.4 | 0.0 | | | | |
| Stock based compensation | 0.5 | 0.4 | 0.4 | 0.4 | 0.1 | 1.1 | 1.0 | |
| Provision for credit losses | 1.6 | 3.4 | 0.4 | 0.2 | 1.9 | 1.7 | 2.7 | |
| |
| Decrease (increase) in: | | | | | | | | |
| Accrued interest receivable | -0.2 | -0.4 | -0.1 | 0.0 | 0.1 | 0.1 | 0.2 | |
| Loans held for sale | | 0.3 | 0.3 | -0.6 | 0.2 | -0.2 | | |
| Cash surrender value of life insurance | -0.5 | -0.5 | -0.3 | -0.4 | -0.4 | | -0.3 | |
| Income taxes refundable and deferred income taxes | 8.0 | -2.2 | 0.2 | 0.2 | 0.3 | -1.2 | | |
| Other assets | -1.1 | 2.6 | 0.4 | 0.2 | -0.2 | -0.2 | 0.1 | |
| Increase (decrease) in: | | | | | | | | |
| Accrued interest payable | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Deferred loan origination fees | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.1 | |
| Other liabilities | -0.2 | -1.6 | 0.1 | -0.2 | -0.1 | 0.4 | -0.2 | |
| Net cash provided by operating activities | 1.7 | 0.5 | 1.4 | 0.3 | 2.2 | 2.0 | 2.1 | |
| Noncash investing activity | | | | | | | | |
| Real estate acquired through foreclosure | 0.0 | 0.1 | | 0.0 | 1.0 | 0.4 | 0.8 | |