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Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Payment Arrangement, Cost by Plan [Table Text Block] | The following table summarizes share-based compensation expense:
($ in thousands) | 2021 |  | 2020 |  | 2019
Performance stock units | $ | 1,777 |  |  | $ | 1,097 |  |  | $ | 1,699 |
Restricted stock units | 3,109 |  |  | 2,613 |  |  | 1,969 |
Stock options | 396 |  |  | — |  |  | — |
Employee stock purchase plan | 735 |  |  | 468 |  |  | 364 |
Total share-based compensation expense | $ | 6,017 |  |  | $ | 4,178 |  |  | $ | 4,032 |
Outstanding Long Term Incentive Awards [Table Text Block] | Information related to the outstanding grants at December 31, 2021 is shown below:
($ in thousands) | 2019 - 2021 Cycle |  | 2020 - 2022 Cycle |  | 2021 - 2023 Cycle
Shares issuable at target | 19,576 |  |  | 24,674 |  |  | 40,372 |
Maximum shares issuable | 39,152 |  |  | 49,348 |  |  | 80,744 |
Unrecognized compensation cost | $ | 27 |  |  | $ | 538 |  |  | $ | 1,981 |
Weighted average grant date fair value | $ | 47.46 |  |  | $ | 38.09 |  |  | $ | 47.16 |
Schedule of Various Information | At December 31, 2021 and 2020, the Company has reserved the following shares of its authorized but unissued common stock for possible future issuance in connection with the following:
| December 31, 2021 |  | December 31, 2020
Outstanding performance units (maximum issuance) | 169,244 |  |  | 125,176 |
Outstanding RSU’s | 181,657 |  |  | 157,428 |
Outstanding options and appreciation rights | 112,927 |  |  | — |
2018 Stock Incentive Plan | 670,326 |  |  | 339,691 |
Non-Management Director Plan | 73,618 |  |  | 86,616 |
2018 Employee Stock Purchase Plan | 571,064 |  |  | 635,890 |
Total | 1,778,836 |  |  | 1,344,801 |
Summary of Employee Stock Option and SSARs Activity | Following is a summary of stock option activity for 2021.
($ in thousands, except per share data) | Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  |
Outstanding at December 31, 2020 | — |  |  | $ | — |  |  |  |  |
Granted | 118,604 |  |  | 43.80 |  |  | 9.2 years |  |
Forfeited | (5,677) |  |  | 43.81 |  |  |  |  |
Outstanding at December 31, 2021 | 112,927 |  |  | $ | 43.80 |  |  | 9.2 years |  |
Exercisable at December 31, 2021 | 460 |  |  | $ | 43.81 |  |  | 9.2 years |  |
Summary of Restricted Stock Units Activity | A summary of the status of the Company’s RSU awards as of December 31, 2021 and changes during the year then ended is presented below.
| Shares |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2020 | 157,428 |  |  | $ | 42.44 |
Granted | 100,220 |  |  | 44.01 |
Vested | (65,755) |  |  | 43.91 |
Forfeited | (10,236) |  |  | 43.51 |
Outstanding at December 31, 2021 | 181,657 |  |  | $ | 42.71 |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table presents the changes in accumulated other comprehensive income (loss) after-tax by component:
($ in thousands) | Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities |  | Unamortized Gain (Loss) on Held-to-Maturity Securities |  | Net Unrealized Loss on Cash Flow Hedges |  | Total
Balance, December 31, 2018 | $ | (9,047) |  |  | $ | (235) |  |  | $ | — |  |  | $ | (9,282) |
Net change | 29,226 |  |  | (33) |  |  | (2,162) |  |  | 27,031 |
Transfer from available-for-sale to held-to-maturity | (5,202) |  |  | 5,202 |  |  | — |  |  | — |
Balance, December 31, 2019 | $ | 14,977 |  |  | $ | 4,934 |  |  | $ | (2,162) |  |  | $ | 17,749 |
Net change | 23,627 |  |  | (1,910) |  |  | (2,346) |  |  | 19,371 |
Transfer from available-for-sale to held-to-maturity | (16,284) |  |  | 16,284 |  |  | — |  |  | — |
Balance, December 31, 2020 | $ | 22,320 |  |  | $ | 19,308 |  |  | $ | (4,508) |  |  | $ | 37,120 |
Net change | (17,049) |  |  | (3,624) |  |  | 2,330 |  |  | (18,343) |
Balance, December 31, 2021 | $ | 5,271 |  |  | $ | 15,684 |  |  | $ | (2,178) |  |  | $ | 18,777 |
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) | The following table presents the pre-tax and after-tax changes in the components of other comprehensive income:
| 2021 |  | 2020 |  | 2019
($ in thousands) | Pre-tax |  | Tax effect |  | After-tax |  | Pre-tax |  | Tax effect |  | After-tax |  | Pre-tax |  | Tax effect |  | After-tax
Change in unrealized gain (loss) on available-for-sale debt securities | $ | (22,701) |  |  | $ | (5,652) |  |  | $ | (17,049) |  |  | $ | 31,798 |  |  | $ | 7,854 |  |  | $ | 23,944 |  |  | $ | 38,764 |  |  | $ | 9,575 |  |  | $ | 29,189 |
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities(a) | — |  |  | — |  |  | — |  |  | (421) |  |  | (104) |  |  | (317) |  |  | 49 |  |  | 12 |  |  | 37 |
Reclassification of gain on held-to-maturity securities(b) | (4,672) |  |  | (1,048) |  |  | (3,624) |  |  | (2,537) |  |  | (627) |  |  | (1,910) |  |  | (44) |  |  | (11) |  |  | (33) |
Change in unrealized gain (loss) on cash flow hedges arising during the period(b) | 1,533 |  |  | 372 |  |  | 1,161 |  |  | (7,898) |  |  | (1,951) |  |  | (5,947) |  |  | (3,004) |  |  | (742) |  |  | (2,262) |
Reclassification of loss on cash flow hedges(b) | 1,543 |  |  | 374 |  |  | 1,169 |  |  | 4,782 |  |  | 1,181 |  |  | 3,601 |  |  | 133 |  |  | 33 |  |  | 100 |
Total other comprehensive income (loss) | $ | (24,297) |  |  | $ | (5,954) |  |  | $ | (18,343) |  |  | $ | 25,724 |  |  | $ | 6,353 |  |  | $ | 19,371 |  |  | $ | 35,898 |  |  | $ | 8,867 |  |  | $ | 27,031 |
(a)The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations. (b)The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations, except for a $3.2 million termination fee in 2020 recognized in noninterest expense.
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following weighted average assumptions were used for grants issued during the year ended December 31, 2021.
| Weighted Average
Risk Free Interest Rate | 1.06%
Expected Dividend Yield | 1.65%
Expected Volatility | 33.92%
Expected Term (years) | 6.2
Restricted Stock Units (RSUs) [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Various Information | Various information related to the RSUs is shown below.
($ in thousands) | 2021 |  | 2020 |  | 2019
Total fair value at vesting date | $ | 2,855 |  |  | $ | 1,702 |  |  | $ | 1,067 |
Unrecognized compensation cost | 4,622 |  |  | 3,899 |  |  | 3,417 |
Expected years to recognize unearned compensation | 1.9 years |  | 1.9 years |  | 1.9 years
Weighted average grant date fair value | $ | 44.01 |  |  | $ | 39.63 |  |  | $ | 45.00 |
Stock Plan for Non-Management Directors |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Various Information | Various information related to the Director Plan is shown below.
| 2021 |  | 2020 |  | 2019
Shares granted | 12,998 |  |  | 15,901 |  |  | 11,382 |
Weighted average grant date fair value | $ | 46.05 |  |  | $ | 30.28 |  |  | $ | 41.63 |

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