FAIR VALUE DISCLOSURES (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Estimated Fair Values of Financial Instruments

The estimated fair values of First Financial’s financial instruments not measured at fair value on a recurring or nonrecurring basis in the consolidated financial statements were as follows:

	Carrying		Estimated fair value
(Dollars in thousands)	value		Total		Level 1		Level 2		Level 3
March 31, 2018
Financial assets
Cash and short-term investments	$	126,781	$	126,781	$	126,781	$	0	$	0
Investment securities held-to-maturity	633,722		623,967		0		623,967		0
Other investments	53,070		N/A		N/A		N/A		N/A
Loans held for sale	8,048		8,048		0		8,048		0
Loans and leases	6,047,641		6,098,950		0		0		6,098,950
Accrued interest receivable	25,842		25,842		0		8,232		17,610
Financial liabilities
Deposits	7,010,504		6,994,627		0		6,994,627		0
Short-term borrowings	658,332		658,332		658,332		0		0
Long-term debt	169,695		165,569		0		165,569		0
Accrued interest payable	4,091		4,091		375		3,716		0

	Carrying		Estimated fair value
(Dollars in thousands)	value		Total		Level 1		Level 2		Level 3
December 31, 2017
Financial assets
Cash and short-term investments	$	184,624	$	184,624	$	184,624	$	0	$	0
Investment securities held-to-maturity	654,008		653,101		0		653,101		0
Other investments	53,140		N/A		N/A		N/A		N/A
Loans held for sale	11,502		11,502		0		11,502		0
Loans and leases	5,959,162		6,006,656		0		0		6,006,656
Accrued interest receivable	24,496		24,496		0		8,265		16,231
Financial liabilities
Deposits	6,895,046		6,884,615		0		6,884,615		0
Short-term borrowings	814,565		814,565		814,565		0		0
Long-term debt	119,654		117,908		0		117,908		0
Accrued interest payable	5,104		5,104		204		4,900		0

Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The financial assets and liabilities measured at fair value on a recurring basis in the consolidated financial statements were as follows:

	Fair value measurements using
(Dollars in thousands)	Level 1		Level 2		Level 3		Assets/liabilities at fair value
March 31, 2018
Assets
Derivatives	$	0	$	16,416	$	0	$	16,416
Investment securities available-for-sale	2,982		1,356,399		0		1,359,381
Total	$	2,982	$	1,372,815	$	0	$	1,375,797
Liabilities
Derivatives	$	0	$	16,368	$	0	$	16,368

	Fair value measurements using
(Dollars in thousands)	Level 1		Level 2		Level 3		Assets/liabilities at fair value
December 31, 2017
Assets
Derivatives	$	0	$	12,757	$	0	$	12,757
Investment securities available-for-sale	2,969		1,346,439		0		1,349,408
Total	$	2,969	$	1,359,196	$	0	$	1,362,165
Liabilities
Derivatives	$	0	$	12,755	$	0	$	12,755

Summary of Financial Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

The following table summarizes financial assets and liabilities measured at fair value on a nonrecurring basis.

	Fair value measurements using
(Dollars in thousands)	Level 1		Level 2		Level 3
March 31, 2018
Assets
Impaired loans	$	0	$	0	$	472
OREO	0		0		215

	Fair value measurements using
(Dollars in thousands)	Level 1		Level 2		Level 3
December 31, 2017
Assets
Impaired loans	$	0	$	0	$	2,671
OREO	0		0		1,086