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Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

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)			2020						2019						2018
Performance stock units			$	1,097					$	1,699					$	2,067
Restricted stock units			2,613						1,969						1,211
Employee stock purchase plan			468						364						174
Total share-based compensation expense			$	4,178					$	4,032					$	3,452

Outstanding Long Term Incentive Awards [Table Text Block]

Information related to the outstanding grants at December 31, 2020 is shown below:

($ in thousands)			2019 - 2021 Cycle						2020 - 2022 Cycle
Shares issuable at target			20,860						26,002
Maximum shares issuable			41,720						52,004
Unrecognized compensation cost			$	366					$	704
Weighted average grant date fair value			47.46						38.09

Schedule of Various Information

At December 31, 2020 and 2019, 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, 2020						December 31, 2019
Outstanding performance units (maximum issuance)			125,176						73,172
Outstanding RSU’s			157,428						117,369
Outstanding options and appreciation rights			—						28,300
2018 Stock Incentive Plan			339,691						521,573
Non-Management Director Plan			86,616						96,031
2018 Employee Stock Purchase Plan			635,890						694,085
Total			1,344,801						1,530,530

Summary of Employee Stock Option and SSARs Activity

Following is a summary of the SSAR activity for 2020.

($ in thousands, except per share data)			Shares						Weighted Average Exercise Price
Outstanding at December 31, 2019			28,300						$	10.14
Exercised			(28,300)						10.14
Outstanding at December 31, 2020			—						N/A

Summary of Restricted Stock Units Activity

A summary of the status of the Company’s RSU awards as of December 31, 2020 and changes during the year then ended is presented below

			Shares						Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019			117,369						$	45.86
Granted			88,759						39.63
Vested			(44,351)						45.68
Forfeited			(4,349)						44.24
Outstanding at December 31, 2020			157,428						$	42.44

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, 2017			$	(3,622)					$	(196)					$	—					$	(3,818)
Net change			(4,633)						3						—						(4,630)
Adjustment for change in accounting policies			(792)						(42)						—						(834)
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

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:

			2020																		2019																		2018
($ 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			$	31,798					$	7,854					$	23,944					$	38,764					$	9,575					$	29,189					$	(6,143)					$	(1,517)					$	(4,626)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities(a)			(421)						(104)						(317)						49						12						37						(9)						(2)						(7)
Reclassification of (gain) loss on held-to-maturity securities(b)			(2,537)						(627)						(1,910)						(44)						(11)						(33)						4						1						3
Change in unrealized loss on cash flow hedges arising during the period(b)			(7,898)						(1,951)						(5,947)						(3,004)						(742)						(2,262)						—						—						—
Reclassification of loss on cash flow hedges(b)			4,782						1,181						3,601						133						33						100						—						—						—
Total other comprehensive income (loss)			$	25,724					$	6,353					$	19,371					$	35,898					$	8,867					$	27,031					$	(6,148)					$	(1,518)					$	(4,630)

(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.

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

Stock Options and SSARs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Various Information

Various information related to the stock options and SSARs is shown below.

($ in thousands)			2020						2019						2018
Intrinsic value of option/SSAR exercises on date of exercise			$	597					$	407					$	2,469

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)			2020						2019						2018
Total fair value at vesting date			$	1,702					$	1,067					$	1,544
Total unrecognized compensation cost for nonvested stock units			3,899						3,417						2,175
Expected years to recognize unearned compensation			1.9 years						1.9 years						2.0 years

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.

			2020						2019						2018
Shares granted			15,901						11,382						11,750
Weighted average fair value			$	30.28					$	41.63					$	50.74

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