BORROWINGS (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Short-term Debt [Table Text Block]

The following is a summary of short-term borrowings for the last three years: 

	2021				2020				2019
(Dollars in thousands)	Amount		Rate		Amount		Rate		Amount		Rate
At December 31,
Federal funds purchased and securities sold under agreements to repurchase	$	51,203	0.01	%	$	166,594	0.05	%	$	165,181	0.85	%
FHLB borrowings	225,000		0.18	%	0		0.00	%	1,151,000		1.73	%
Other short-term borrowings	20,000		1.90	%	0		0.00	%	0		0.00	%
Total	$	296,203	0.27	%	$	166,594	0.05	%	$	1,316,181	1.62	%
Average for the year
Federal funds purchased and securities sold under agreements to repurchase	$	160,967	0.07	%	$	149,036	0.26	%	$	155,859	1.15	%
FHLB borrowings	43,371		0.20	%	441,867		1.37	%	990,860		2.37	%
Other short-term borrowings	165		1.92	%	0		0.00	%	0		0.00	%
Total	$	204,503	0.10	%	$	590,903	1.09	%	$	1,146,719	1.90	%

Schedule Of Remaining Contractual Maturity Of Secured Borrowings And Class Of Collateral Pledged Under Repurchase Agreements Table [Table Text Block]

The following shows the remaining contractual maturity of repurchase agreements by collateral pledged:

(Dollars in thousands)	Overnight and Continuous
Repurchase agreements
Mortgage-backed securities	$	48,370
Collateralized mortgage obligations	2,833
Total	$	51,203

Summary of Long-term Debt [Table Text Block]

The following is a summary of First Financial's long-term debt:

	2021				2020
(Dollars in thousands)	Amount		Average Rate		Amount		Average Rate
FRB borrowings	$	0	0.00	%	$	434,982	0.35	%
FHLB borrowings	0		0.00	%	19,971		1.43	%
Subordinated debt	313,248		4.86	%	321,384		4.86	%
Unamortized debt issuance costs	(2,384)		n/a		(2,770)		n/a
Capital lease liability	1,781		3.81	%	1,860		3.81	%
Capital loan with municipality	775		0.00	%	775		0.00	%
Subtotal	313,420		4.88	%	776,202		2.25	%
Acquired in Summit acquisition
Bank lines of credit	23,030		2.77	%	0		0.00	%
Notes issued in conjunction with acquisition of property and equipment	73,382		4.09	%	0		0.00	%
Total notes payable acquired in Summit acquisition	96,412		3.77	%	0		0.00	%
Total long-term debt	$	409,832	4.62	%	$	776,202	2.25	%

Schedule of Maturities of Long-term Debt [Table Text Block]

As of December 31, 2021, First Financial's long-term debt matures as follows:

(Dollars in thousands)	Long-term debt
2022	$	28,091
2023	15,086
2024	23,091
2025	12,301
2026	16,765
Thereafter	314,498
Total	$	409,832