Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on a Recurring Basis

	Recurring Fair Value Measurements at Reporting Date
	June 30, 2021						December 31, 2020
(Dollars in thousands)	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Available-for-sale investment securities:
Obligations of:
U.S. government sponsored agencies	$	—	$	14,235	$	—	$	—	$	5,363	$	—
States and political subdivisions	—		223,853		—		—		114,919		—
Residential mortgage-backed securities	—		579,152		—		—		623,218		—
Commercial mortgage-backed securities	—		27,631		—		—		4,783		—
Bank-issued trust preferred securities	—		4,766		—		—		4,730		—
Total available-for-sale securities	—		849,637		—		—		753,013		—
Equity investment securities (a)	135		237		—		107		192		—
Derivative assets (b)	—		17,957		—		—		27,332		—
Liabilities:
Derivative liabilities (c)	$	—	$	26,073	$	—	$	—	$	39,395	$	—

(a)    Included in "Other investment securities" on the Unaudited Consolidated Balance Sheets. For additional information, see "Note 3 Investment Securities" of the Notes to the Unaudited Condensed Consolidated Financial Statements.

(b)    Included in "Other assets" on the Unaudited Consolidated Balance Sheets. For additional information, see "Note 9 Derivative Financial Instruments" of the Notes to the Unaudited Condensed Consolidated Financial Statements.

(c)    Included in "Accrued expenses and other liabilities" on the Unaudited Consolidated Balance Sheets. For additional information, see "Note 9 Derivative Financial Instruments" of the Notes to the Unaudited Condensed Consolidated Financial Statements.

Fair Value Measurements, Nonrecurring [Table Text Block]

The following table provides the fair value for each class of assets and liabilities required to be measured and reported at fair value on a non-recurring basis on the Unaudited Consolidated Balance Sheets by level in the fair value hierarchy.

	Non-Recurring Fair Value Measurements at Reporting Date
	June 30, 2021						December 31, 2020
(Dollars in thousands)	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Other real estate owned ("OREO")	$	—	$	—	$	239	$	—	$	—	$	134
Servicing rights (a)(b)	$	—	$	—	$	2,399	$	—	$	—	$	2,591

Fair Values of Financial Assets and Liabilities on Balance Sheets

	Fair Value Measurements of Other Financial Instruments
(Dollars in thousands)	Fair Value Hierarchy Level	June 30, 2021				December 31, 2020
		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	246,073	$	246,073	$	152,100	$	152,100
Held-to-maturity investment securities:
Obligations of:
U.S. government sponsored agencies	2	30,103		29,445		—		—
States and political subdivisions	2	102,224		101,740		35,139		35,484
Residential mortgage-backed securities	2	24,067		24,743		25,890		26,742
Commercial mortgage-backed securities	2	23,830		23,959		5,429		5,856
Total held-to-maturity securities		180,224		179,887		66,458		68,082
Other investment securities:
Federal Home Loan Bank ("FHLB") stock	2	16,523		16,523		21,718		21,718
Federal Reserve Bank ("FRB") stock	2	13,311		13,311		13,311		13,311
Nonqualified deferred compensation (a)	2	2,013		2,013		1,867		1,867
Other investment securities	2	365		365		365		365
Other investment securities (b)		32,212		32,212		37,261		37,261
Loans and leases, net of deferred fees and costs	3	3,372,199		3,487,505		3,402,940		3,458,732
Loans held for sale	2	2,751		2,919		4,659		4,733
Bank owned life insurance	3	72,482		72,482		71,591		71,591
Liabilities:
Deposits	2	$	4,232,623	$	3,963,511	$	3,910,459	$	3,773,602
Short-term borrowings	2	66,496		67,000		73,261		74,170
Long-term borrowings	2	95,081		99,328		110,568		117,364