BUSINESS COMBINATIONS (Tables)

9 Months Ended

Sep. 30, 2017

Business Acquisition, Pro Forma Information

Pro-forma data for the three months ended September 30, 2016 and nine months ended September 30, 2017 and 2016 listed in the table below present pro-forma information as if the acquisition occurred at the beginning of 2016.

	Three Months Ended
	September 30,		Nine Months Ended September 30,
(In thousands, except per share amounts)	2016		2017		2016

Net interest income	$	40,102	$	131,178	$	109,738
Net income		9,798		30,884		20,364
EPS - basic		0.24		0.73		0.52
EPS - diluted		0.24		0.72		0.51

Floridian Financial Group Inc [Member]

Business Acquisition [Line Items]

Schedule of summarizing the purchase price calculation

The following table represents the purchase price paid to Floridian shareholders in connection with the acquisition:

	March 11, 2016
Shares exchanged for cash	$	26,699,000

Number of Floridian Financial Group, Inc. common shares outstanding		6,222,119
Per share exchange ratio		0.5289
Number of shares of Seacoast common stock issued		3,291,066
Multiplied by common stock price per share on March 11, 2016	$	15.47
Value of common stock issued		50,912,791

Total purchase price	$	77,611,791

Schedule of Business Acquisitions, by Acquisition

The acquisition was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $32 million on this acquisition which is nondeductible for tax purposes as this acquisition was a nontaxable transaction. The goodwill was calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. Loans that were nonaccrual and all loan relationships identified as impaired as of the acquisition date were considered by management to be credit impaired and were accounted for pursuant to ASC Topic 310-30.

			Measurement
	Initial Report		Period		As Adjusted
Date of acquisition	March 11, 2016		Adjustments		March 11, 2016
	(in thousands)
Assets:
Cash	$	28,243	$	0	$	28,243
Investment securities		66,912		95		67,007
Loans, net		268,249		(2,112)		266,137
Fixed assets		7,801		(628)		7,173
Core deposit intangibles		3,375		0		3,375
Goodwill		29,985		1,647		31,632
Other assets		12,879		998		13,877
	$	417,444	$	0	$	417,444

Liabilities:
Deposits	$	337,341	$	0	$	337,341
Other liabilities		2,492		0		2,492
	$	339,833	$	0	$	339,833

Fair Value, Assets Measured on Recurring Basis

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	March 11, 2016
(In thousands)	Book Balance		Fair Value
Loans:
Single family residential real estate	$	38,304	$	37,367
Commercial real estate		172,531		167,105
Construction/development/land		20,546		18,108
Commercial loans		39,070		37,804
Consumer and other loans		3,385		3,110
Purchased credit-impaired		6,186		2,643
Total acquired loans	$	280,022	$	266,137

Schedule of Contractually required principal and interest payments

Contractually required principal and interest payments have been adjusted for estimated prepayments.

(In thousands)	March 11, 2016

Contractually required principal and interest	$	8,031
Non-accretable difference		(4,820)
Cash flows expected to be collected		3,211
Accretable yield		(568)
Total purchased credit-impaired loan acquired	$	2,643

BMO Harris Bank [Member]

Business Acquisition [Line Items]

Schedule Of Business Combinations Purchase Price Allocation [Table Text Block]

The acquisition is accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations. Determining fair values of assets and liabilities, especially the loan portfolio and bank premises and leases related to the fourteen branches acquired, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

			Measurement
	Initial Report		Period		As Adjusted
Date of acquisition	June 3, 2016		Adjustments		June 3, 2016
	(in thousands)
Assets:
Cash from BMO (net of payable)	$	234,094	$	0	$	234,094
Loans, net		62,671		0		62,671
Fixed assets		3,715		0		3,715
Core deposit intangibles		5,223		(135)		5,088
Goodwill		7,645		163		7,808
Other assets		952		(28)		924
	$	314,300	$	0	$	314,300

Liabilities:
Deposits	$	314,248	$	0	$	314,248
Other liabilities		52		0		52
	$	314,300	$	0	$	314,300

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	June 3, 2016
(In thousands)	Book Balance		Fair Value
Loans:
Commercial real estate	$	31,564	$	31,200
Commercial loans		32,479		31,471
Purchased credit-impaired		0		0
Total acquired loans	$	64,043	$	62,671

Gulf Shore Banc shares Inc [Member]

Business Acquisition [Line Items]

Schedule of summarizing the purchase price calculation

The Company acquired 100% of the outstanding common stock of GulfShore. Under the terms of the definitive agreement, GulfShore shareholders received, for each share of Gulfshore common stock, the combination of $1.47 in cash and 0.4807 shares of Seacoast common stock (based on Seacoast’s closing price of $23.94 per share on April 7, 2017).

	April 7, 2017
Shares exchanged for cash	$	8,033,999

Number of GulfShore Bancshares, Inc. common shares outstanding		5,464,308
Per share exchange ratio		0.4807
Number of shares of Seacoast common stock issued		2,626,693
Multiplied by common stock price per share on April 7, 2017	$	23.94
Value of common stock issued		62,883,030

Total purchase price	$	70,917,029

Schedule of Business Acquisitions, by Acquisition

The acquisition was accounted for under the acquisition method in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $37 million on this acquisition which is nondeductible for tax purposes as this acquisition was a nontaxable transaction. The goodwill was calculated based on the fair values of the assets acquired and liabilities assumed as of the acquisition date. The fair values initially assigned to assets acquired and liabilities assumed are preliminary and could change for up to one year after the closing date of the acquisition as new information and circumstances relative to closing date fair values are known. Determining fair values of assets and liabilities, especially the loan portfolio and foreclosed real estate, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.

			Measurement
	Initial Report		Period		As Adjusted
Date of acquisition	April 7, 2017		Adjustments		April 7, 2017
	(in thousands)
Assets:
Cash	$	55,540	$	0	$	55,540
Investment securities		316		0		316
Loans, net		250,884		(8)		250,876
Fixed assets		1,307		0		1,307
Other real estate owned		13		0		13
Core deposit intangibles		3,927		0		3,927
Goodwill		37,090		8		37,098
Other assets		8,572		0		8,572
	$	357,649	$	0	$	357,649

Liabilities:
Deposits	$	285,350	$	0	$	285,350
Other liabilities		1,382		0		1,382
	$	286,732	$	0	$	286,732

The table below presents information with respect to the fair value of acquired loans, as well as their unpaid principal balance (“Book Balance”) at acquisition date.

	April 7, 2017
(In thousands)	Book Balance		Fair Value
Loans:
Single family residential real estate	$	101,281	$	99,598
Commercial real estate		106,729		103,905
Construction/development/land		13,175		11,653
Commercial loans		32,137		32,247
Consumer and other loans		3,554		3,473
Purchased credit-impaired		0		0
Total acquired loans	$	256,876	$	250,876

NorthStar Bank [Member]

Business Acquisition [Line Items]

Schedule of summarizing the purchase price calculation

The Company acquired 100% of the outstanding common stock of NSBC. Under the terms of the definitive agreement, NSBC shareholders received, for each share of NSBC common stock, the combination of $2.40 in cash and 0.5605 shares of Seacoast common stock.

	October 20, 2017
Shares exchanged for cash	$	4,700,129

Number of NorthStar Banking Corporation common shares outstanding		1,958,387
Per share exchange ratio		0.5605
Number of shares of Seacoast common stock issued		1,097,675
Multiplied by common stock price per share on October 20, 2017	$	24.92
Value of common stock issued		27,354,061
Cash paid for NorthStar Banking vested Corporation stock options		801,168

Total purchase price	$	32,855,358

Palm Beach Community Bank [Member]

Business Acquisition [Line Items]

Schedule of summarizing the purchase price calculation

The Company acquired 100% of the outstanding common stock of PBCB. Under the terms of the definitive agreement, PBCB shareholders received, for each share of PBCB stock, the combination of $6.26 in cash and 0.9240 shares of Seacoast common stock.

	November 3, 2017
Shares exchanged for cash	$	15,693,929

Number of Palm Beach Community Bank common shares outstanding		2,506,867
Per share exchange ratio		0.9240
Number of shares of Seacoast common stock issued		2,316,345
Multiplied by common stock price per share on November 3, 2017	$	24.31
Value of common stock issued		56,310,350

Total purchase price	$	72,004,279