Business Combinations (Tables)

12 Months Ended

Dec. 31, 2021

Business Combination and Asset Acquisition [Abstract]

Summary of Consideration, Assets Acquired and Liabilities Assumed

The following table presents the fair value adjustments and the measurement period adjustments as of the dates presented:

	November 30, 2019						November 30, 2020
	As Recorded by DNB		Fair Value Adjustments		As Recorded by S&T		Measurement Period Adjustments		As Recorded by S&T
Fair Value of Assets Acquired
Cash and cash equivalents	$	64,119	$	—	$	64,119	$	—	$	64,119
Securities and other investments	108,715		183		108,898		—		108,898
Loans	917,127		(8,143)		908,984		(2,377)		906,607
Allowance for credit losses	(6,487)		6,487		—		—		—
Goodwill	15,525		(15,525)		—		—		—
Premises and equipment	6,782		8,090		14,872		—		14,872
Accrued interest receivable	4,138		—		4,138		—		4,138
Deferred income taxes	2,017		(3,298)		(1,281)		311		(970)
Core deposits and other intangible assets	269		(269)		—		—		—
Other assets	24,883		(4,278)		20,605		(116)		20,489
Total Assets Acquired	1,137,088		(16,753)		1,120,335		(2,182)		1,118,153
Fair Value of Liabilities Assumed
Deposits	966,263		1,002		967,265		—		967,265
Borrowings	37,617		(276)		37,341		(257)		37,084
Accrued interest payable and other liabilities	11,157		(3,184)		7,973		(122)		7,851
Total Liabilities Assumed	1,015,037		(2,458)		1,012,579		(379)		1,012,200
Total Net Assets Acquired	$	122,051	$	(14,295)	$	107,756	$	(1,803)	$	105,953
Core Deposit Intangible Asset					$	7,288	$	—	$	7,288
Wealth Management Intangible Asset					1,772		—		1,772
Total Fair Value of Net Assets Acquired and Identified					$	116,816	$	(1,803)	$	115,013
Consideration Paid
Cash					$	360	$	—	$	360
Common stock					200,631		—		200,631
Fair Value of Total Consideration					$	200,991	$	—	$	200,991
Goodwill					$	84,175	$	1,803	$	85,978