SouthState (SSB) 10-Q 4 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information
Entity Registrant Name	SOUTH STATE Corp
Entity Central Index Key	764,038
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		36,787,776
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Cash and cash equivalents:
Cash and due from banks	$ 227,264	$ 255,775	$ 212,042
Interest-bearing deposits with banks	362,773	117,635	348,602
Federal funds sold and securities purchased under agreements to resell	54,467	4,217	102,482
Total cash and cash equivalents	644,504	377,627	663,126
Investment securities:
Securities held to maturity (fair value of $1,284, $2,556 and $6,217, respectively)	1,274	2,529	6,095
Securities available for sale, at fair value	1,640,837	1,648,193	1,379,788
Other investments	23,479	23,047	14,726
Total investment securities	1,665,590	1,673,769	1,400,609
Loans held for sale	42,690	70,890	46,988
Loans:
Loans, net	10,589,521	10,575,417	7,868,840
Other real estate owned	11,073	11,203	20,007
Premises and equipment, net	253,605	255,565	203,505
Bank owned life insurance	226,222	225,132	149,562
Deferred tax assets	46,736	45,902	43,075
Mortgage servicing rights	34,196	31,119	30,063
Core deposit and other intangibles	70,376	73,789	55,461
Goodwill	999,592	999,586	595,711
Other assets	105,004	126,590	73,123
Total assets	14,689,109	14,466,589	11,150,070
Deposits:
Noninterest-bearing	3,120,818	3,047,432	2,599,111
Interest-bearing	8,542,280	8,485,334	6,434,327
Total deposits	11,663,098	11,532,766	9,033,438
Federal funds purchased and securities sold under agreements to repurchase	357,574	286,857	352,431
Other borrowings	215,589	216,385	107,988
Other liabilities	130,269	121,661	76,313
Total liabilities	12,366,530	12,157,669	9,570,170
Shareholders' equity:
Preferred stock - $.01 par value; authorized 10,000,000 shares; no shares issued and outstanding
Common stock - $2.50 par value; authorized 80,000,000, 80,000,000 and 40,000,000 shares, respectively; 36,783,438, 36,759,656 and 29,230,734 shares issued and outstanding, respectively	91,958	91,899	73,077
Surplus	1,807,989	1,807,601	1,132,173
Retained earnings	452,982	419,847	379,534
Accumulated other comprehensive loss	(30,350)	(10,427)	(4,884)
Total shareholders' equity	2,322,579	2,308,920	1,579,900
Total liabilities and shareholders' equity	14,689,109	14,466,589	11,150,070
Acquired credit impaired loans
Loans:
Loans, net	597,274	618,803	627,340
Total loans	601,358	623,430	631,896
Acquired non-credit impaired loans
Loans:
Loans, net	3,274,938	3,507,907	1,715,642
Total loans	3,274,938	3,507,907	1,715,642
Non-acquired loans
Loans:
Total loans	6,762,512	6,492,155	5,564,307
Less allowance for non-acquired loan losses	(45,203)	(43,448)	(38,449)
Loans, net	$ 6,717,309	$ 6,448,707	$ 5,525,858

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Investment securities:
Securities held to maturity, fair value (in dollars)	$ 1,284	$ 2,556	$ 6,217
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000	10,000,000
Preferred stock, shares issued	0	0	0
Preferred stock, shares outstanding	0	0	0
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50	$ 2.50
Common stock, shares authorized	80,000,000	80,000,000	40,000,000
Common stock, shares issued	36,783,438	36,759,656	29,230,734
Common stock, shares outstanding	36,783,438	36,759,656	29,230,734

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Loans, including fees	$ 127,041	$ 91,752
Investment securities:
Taxable	8,788	7,231
Tax-exempt	1,559	1,430
Federal funds sold and securities purchased under agreements to resell	660	573
Total interest income	138,048	100,986
Interest expense:
Deposits	6,913	2,497
Federal funds purchased and securities sold under agreements to repurchase	454	240
Other borrowings	1,708	887
Total interest expense	9,075	3,624
Net interest income	128,973	97,362
Provision for loan losses	2,454	3,707
Net interest income after provision for loan losses	126,519	93,655
Noninterest income:
Fees on deposit accounts	25,506	21,719
Mortgage banking income	4,948	5,569
Trust and investment services income	7,514	5,941
Recoveries on acquired loans	2,975	1,532
Other	2,575	1,674
Total noninterest income	43,518	36,435
Noninterest expense:
Salaries and employee benefits	62,465	48,886
Net occupancy expense	8,166	6,388
Information services expense	9,738	6,360
Furniture and equipment expense	4,626	3,794
OREO expense and loan related	1,661	2,142
Bankcard expense	3,654	2,770
Amortization of intangibles	3,413	2,507
Supplies, printing and postage expense	1,392	1,654
Professional fees	1,699	1,773
FDIC assessment and other regulatory charges	1,263	1,122
Advertising and marketing	736	559
Merger and branch consolidation related expenses	11,296	21,024
Other	6,317	5,744
Total noninterest expense	116,426	104,723
Earnings:
Income before provision for income taxes	53,611	25,367
Provision for income taxes	11,285	7,103
Net income	$ 42,326	$ 18,264
Earnings per common share:
Basic (in dollars per share)	$ 1.15	$ 0.63
Diluted (in dollars per share)	1.15	0.63
Dividends per common share (in dollars per share)	$ 0.33	$ 0.33
Weighted-average common shares outstanding:
Basic (in shares)	36,646	28,892
Diluted (in shares)	36,899	29,159

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 42,326	$ 18,264
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during period	(22,082)	5,116
Tax effect	4,890	(1,950)
Net of tax amount	(17,192)	3,166
Unrealized gains (losses) on derivative financial instruments qualifying as cash flow hedges:
Unrealized holding gains (losses) arising during period	36	(38)
Tax effect	(8)	14
Reclassification adjustment for losses included in interest expense	47	110
Tax effect	(10)	(42)
Net of tax amount	65	44
Change in pension plan obligation:
Reclassification adjustment for changes included in net income	194	188
Tax effect	(43)	(71)
Net of tax amount	151	117
Net comprehensive income (loss)	(16,976)	3,327
Comprehensive income	$ 25,350	$ 21,591

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Corporate securities	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss).	Total
Balance at Dec. 31, 2016	$ 60,576	$ 711,307	$ 370,916	$ (8,211)	$ 1,134,588
Balance (in shares) at Dec. 31, 2016	24,230,392
Increase (Decrease) in Stockholders' Equity
Comprehensive income			18,264	3,327	21,591
Cash dividends declared on common stock per share			(9,646)		(9,646)
Stock options exercised	$ 22	285			307
Stock options exercised (in shares)	9,002
Common stock issued for Southeastern Bank Financial Corp. acquisition	$ 12,446	422,163			434,609
Common stock issued for Southeastern Bank Financial Corp. acquisition (in shares)	4,978,338
Restricted stock awards	$ 28	(28)
Restricted stock awards (in shares)	11,273
Stock issued pursuant to restricted stock units.	$ 95	(95)
Stock issued pursuant to restricted stock units (in shares)	37,802
Common stock repurchased	$ (90)	(3,157)			(3,247)
Common stock repurchased (in shares)	(36,073)
Share-based compensation expense		1,698			1,698
Balance at Mar. 31, 2017	$ 73,077	1,132,173	379,534	(4,884)	$ 1,579,900
Balance (in shares) at Mar. 31, 2017	29,230,734				29,230,734
Balance (in shares) Preferred Stock at Mar. 31, 2017					0
Balance at Dec. 31, 2017	$ 91,899	1,807,601	419,847	(10,427)	$ 2,308,920
Balance (in shares) at Dec. 31, 2017	36,759,656				36,759,656
Balance (in shares) Preferred Stock at Dec. 31, 2017					0
Increase (Decrease) in Stockholders' Equity
Comprehensive income			42,326	(16,976)	$ 25,350
Cash dividends declared on common stock per share			(12,138)		(12,138)
AOCI reclassification to retained earnings from adoption of ASU 2018-02 | ASU 2018- 02			2,947	(2,947)
Stock options exercised	$ 5	61			66
Stock options exercised (in shares)	2,240
Restricted stock awards	$ 3	(3)
Restricted stock awards (in shares)	1,169
Stock issued pursuant to restricted stock units.	$ 96	(96)
Stock issued pursuant to restricted stock units (in shares)	38,365
Common stock repurchased	$ (45)	(1,567)			(1,612)
Common stock repurchased (in shares)	(17,992)
Share-based compensation expense		1,993			1,993
Balance at Mar. 31, 2018	$ 91,958	$ 1,807,989	$ 452,982	$ (30,350)	$ 2,322,579
Balance (in shares) at Mar. 31, 2018	36,783,438				36,783,438
Balance (in shares) Preferred Stock at Mar. 31, 2018					0

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Consolidated Statements of Changes in Shareholders' Equity
Cash dividends declared, per share (in dollars per share)	$ 0.33	$ 0.33

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 42,326	$ 18,264
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,939	7,050
Provision for loan losses	2,454	3,707
Deferred income taxes	3,993	1,558
Share-based compensation expense	1,993	1,698
Accretion of discount related to performing acquired loans	(9,656)	(4,199)
Gain on disposal of premises and equipment	(72)	(15)
Gain on sale of OREO	(58)	(50)
Net amortization of premiums on investment securities	1,966	1,722
OREO write downs	777	936
Fair value adjustment for loans held for sale	(215)	716
Originations and purchases of loans held for sale	(154,234)	(164,075)
Proceeds from sales of loans	182,649	180,594
Net change in:
Accrued interest receivable	1,553	1,204
Prepaid assets	(526)	768
Miscellaneous other assets	14,251	(1,889)
Accrued interest payable	775	(519)
Accrued income taxes	6,984	5,466
Miscellaneous other liabilities	1,846	(11,670)
Net cash provided by operating activities	105,745	41,266
Cash flows from investing activities:
Proceeds from sales of investment securities available for sale	5,215	210,943
Proceeds from maturities and calls of investment securities held to maturity	1,255
Proceeds from maturities and calls of investment securities available for sale	57,972	56,143
Proceeds from sales of other investment securities	2,125	2,382
Purchases of investment securities available for sale	(79,661)	(61,321)
Purchases of other investment securities	(2,556)	(303)
Net increase in loans	(10,461)	(176,946)
Net cash received from acquisitions	6	71,607
Recoveries of loans previously charged off	966	731
Purchases of premises and equipment	(3,615)	(4,219)
Proceeds from sale of OREO	2,516	2,257
Proceeds from sale of premises and equipment	6	15
Net cash provided by (used in) investing activities	(26,232)	101,289
Cash flows from financing activities:
Net increase in deposits	130,332	178,095
Net increase in federal funds purchased and securities sold under agreements to repurchase and other short-term borrowings	70,717	37,645
Proceeds from FHLB advances	50,000
Repayment of other borrowings	(50,001)	(57,031)
Common stock repurchase	(1,612)	(3,247)
Dividends paid on common stock	(12,138)	(9,646)
Stock options exercised	66	307
Net cash provided by financing activities	187,364	146,123
Net increase in cash and cash equivalents	266,877	288,678
Cash and cash equivalents at beginning of period	377,627	374,448
Cash and cash equivalents at end of period	644,504	663,126
Cash paid for:
Interest	8,300	4,142
Income taxes	786	760
Acquisitions:
Fair value of tangible assets acquired		1,816,592
Other intangible assets acquired		18,120
Liabilities assumed		1,656,967
Net identifiable assets acquired over liabilities assumed		$ 177,745
Common stock issued in acquisition		434,625
Real estate acquired in full or in partial settlement of loans	$ 2,895	$ 4,284

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Basis of Presentation
Basis of Presentation	Note 1 — Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and disclosures required by accounting principles generally accepted in the United States (“GAAP”) for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period information has been reclassified to conform to the current period presentation, and these reclassifications had no impact on net income or equity as previously reported. Operating results for the three months ended March 31, 201 8 are not necessarily indicative of the results that may be expected for the year ending December 31, 201 8 . The condensed consolidated balance sheet at December 31, 201 7 has been derived from the audited financial statements at that date but does not include all of the information and disclosures required by GAAP for complete financial statements.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 2 — Summary of Significant Accounting Policies The information contained in the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 201 7 , as filed with the Securities and Exchange Commission (the “SEC”) on February 23, 2018, should be referenced when reading these unaudited condensed consolidated financial statements. Unless otherwise mentioned or unless the context requires otherwise, references herein to "South State," the "Company" "we," "us," "our" or similar references mean South State Corporation and its consolidated subsidiaries. References to the “Bank” means South State Corporation’s wholly owned subsidiary, South State Bank, a South Carolina banking corporation. Revenue from Contracts with Customers (Topic 606) and Method of Adoption On January 1, 2018, we adopted the requirements of Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (“ASU Topic 606”). The majority of our revenue is derived primarily from interest income from receivables (loans) and securities. Other revenues are derived from fees received in connection with deposit accounts, mortgage banking activities including gains from the sale of loans and loan origination fees, and trust and investment advisory services. The core principle of the new standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company adopted ASU Topic 606 using the modified retrospective transition approach which does not require restatement of prior periods. The method was selected as there were no material changes in the timing of revenue recognition resulting in no comparability issues with prior periods. This adoption method is considered a change in accounting principle requiring additional disclosure of the nature of and reason for the change, which is solely a result of the adoption of the required standard. When applying the modified retrospective approach under ASU Topic 606, the Company has elected, as a practical expedient, to apply the revenue standard only to contracts that are not completed as of January 1, 2018. A completed contract is considered to be a contract for which all (or substantially all) of the revenue was recognized in accordance with revenue guidance that was in effect before January 1, 2018. There were no uncompleted contracts as of January 1, 2018 for which application of the new standard required an adjustment to retained earnings. The following disclosures related to ASU Topic 606 involve income derived from contracts with customers. Within the scope of ASU Topic 606, we maintain contracts to provide services, primarily for investment advisory and/or custody of assets. Through our wholly-owned subsidiaries, the Bank, South State Advisory and Minis, Inc., we contract with our customers to perform IRA, Trust, and/or Custody and Agency advisory services. Total revenue recognized from these contracts with customers was $7.5 million for the three months ended March 31, 2018. The Bank contracts with our customers to perform deposit account services. Total revenue recognized from these contracts with customers is $25.8 million for the three months ended March 31, 2018. Due to the nature of our relationship with the customers that we provide services, we do not incur costs to obtain contracts and there are no material incremental costs to fulfill these contracts that should be capitalized. Disaggregation of Revenue - Our portfolio of services provided to our customers consists of over 791,000 active contracts. We have disaggregated revenue according to timing of the transfer of service. Total revenue derived from contracts in which services are transferred at a point in time is $33.8 million for the three months ended March 31, 2018. Total revenue derived from contracts in which services are transferred over time is $4.8 million for the three months ended March 31, 2018. Revenue is recognized as the services are provided to the customers. Economic factors impacting the customers could affect the nature, amount, and timing of these cash flows, as unfavorable economic conditions could impair the customers’ ability to provide payment for services. This risk is mitigated as we generally deduct payments from customers’ accounts as services are rendered. Contract Balances - The timing of revenue recognition, billings, and cash collections results in billed accounts receivable on the balance sheet. Most contracts call for payment by a charge or deduction to the respective customer account but there are some that require a receipt of payment from the customer. For fee per transaction contracts, the customers are billed as the transactions are processed. For hourly rate and monthly service contracts related to trust and some investment revenues, the customers are billed monthly (generally as a percentage basis point of the market value of the investment account). In some cases, specific to Minis, Inc. and South State Advisory customers are billed in advance for quarterly services to be performed based on the past quarters average account balance. These do create contract liabilities or deferred revenue, as the customers pay in advance for service. Neither the contract liabilities nor the accounts receivables balances are material to the Company’s balance sheet. Performance Obligations - A performance obligation is a promise in a contract to transfer a distinct good or service to the customer, and is the unit of account in ASU Topic 606. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The performance obligations for these contracts are satisfied as the service is provided to the customer (either over time or at a point in time). The payment terms of the contracts are typically based on a basis point percentage of the investment account market value, fee per hour of service, or fee for service incurred. There are no significant financing components in the contracts. Excluding deposit services revenues which are mostly billed at a point in time as a fee for services incurred, all other contracts within the scope of ASU Topic 606 contain variable consideration in that fees earned are derived from market values of accounts or from hours worked for services performed which determines the amount of consideration to which we are entitled. The variability is resolved when the hours are incurred or services are provided. The contracts do not include obligations for returns, refunds, or warranties. The contracts are specific to the amounts owed to the Company for services performed during a period should the contracts be terminated. Significant Judgements - All of the contracts create performance obligations that are satisfied at a point in time excluding the contracts billed in advance through Minis and South State Advisory and some immaterial deposit revenues. Revenue is recognized as services are billed to the customers. Variable consideration does exist for contracts related to our trust and investment services as revenues are based on market values and services performed. We have adopted the right-to-invoice practical expedient for trust management contracts through South State Bank which we contract with our customers to perform IRA, Trust, and/or Custody services.

Recent Accounting and Regulator

Recent Accounting and Regulatory Pronouncements	3 Months Ended
	Mar. 31, 2018
Recent Accounting and Regulatory Pronouncements
Recent Accounting and Regulatory Pronouncements	Note 3 — Recent Accounting and Regulatory Pronouncements In February 2018, the Financial Accounting Standards Board (“FASB”) issued (“ASU”) No. 2018-03, Technical Corrections and Improvements to Financial Instruments-Overall (Subtopic 825-10) (“ASU 2018-03”). ASU 2018-03 updates the new financial instruments standard by clarifying issues that arisen from ASU 2016-01, but does not change the core principle of the new standard. The issues addressed in this ASU include: (1) Equity securities without a readily determinable fair value-discontinuation, (2) Equity securities without a readily determinable fair value-adjustments, (3) Forward contracts and purchased options, (4) Presentation requirements for certain fair value option liabilities, (5) Fair value option liabilities denominated in a foreign currency, (6) Transition guidance for equity securities without a readily determinable fair value, and (7) Transition and open effective date information. For public business entities, the amendments in ASU 2018-03 and ASU 2016-01 are effective for interim and annual periods beginning after December 15, 2017. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption of ASU 2018-03 and ASU 2016-01. This guidance became effective on January 1, 2018 and the Company has determined that the implementation of this standard did not have a material impact to the Company’s consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income; (“ASU 2018-02”). ASU 2018-02 amends ASC Topic 220 and allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act (“Tax Reform Act”). Consequently, this amendment eliminates the stranded tax effects resulting from the Tax Reform Act and will improve the usefulness of information reported to financial statement users. However, because the amendments only related to the reclassification of the income tax effects of the Tax Reform Act, the underlying guidance that requires that the effects of the change in tax laws or rates be included in income from continuing operations is not affected. The guidance is effective for public companies for annual periods beginning on or after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period, (1) for public business entities for reporting periods for which financial statements have not yet been issued and (2) for all other entities for reporting periods for which financial statements have not yet been made available for issuance. This amendment should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in U.S. federal corporate income tax rate in the Tax Reform Act is recognized. The Company early adopted this amendment in the first quarter of 2018 and reclassified $2.9 million from accumulated other comprehensive income to retained earnings for the stranded tax effects resulting from the Tax Reform Act. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities; (“ASU 2017-12”). ASU 2017-12 amends Accounting Standards Codification (“ASC”) Topic 815 to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. These amendments will improve the transparency of information about an entity’s risk management activities and simplify the application of hedge accounting. The guidance is effective for public companies for annual periods beginning on or after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. All transition requirements and elections should be applied to hedging relationships existing on the date of adoption. The Company is still assessing the impact of this new guidance, but does not believe it will have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting ; (“ASU 2017-09”). ASU 2017-09 provides clarity by offering guidance on the scope of modification accounting for share-based payment awards and gives direction on which changes to the terms or conditions of these awards require an entity to apply modification accounting. Under the new guidance, modification accounting is required only if the fair value, the vesting conditions, or the classification of the award (as equity or liability) changes as a result of the change in terms or conditions. The guidance is effective prospectively for all companies for annual periods beginning on or after December 15, 2017. Early adoption is permitted. The Company adopted this standard in the first quarter of 2018 and determined that this guidance did not have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Cost (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities; (“ASU 2017-08”). ASU 2017-08 shortens the amortization period of the premium for certain callable debt securities, from the contractual maturity date to the earliest call date. The amendments do not require an accounting change for securities held at a discount; an entity will continue to amortize to the contractual maturity date the discount related to callable debt securities. The amendments apply to the amortization of premiums on callable debt securities with explicit, noncontingent call features that are callable at fixed prices on preset dates. For public business entities, ASU 2017-08 is effective in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. For entities other than public business entities, the amendments are effective in fiscal years beginning after December 15, 2019 and in interim periods in fiscal years beginning after December 15, 2020. Early adoption is permitted for all entities, including in an interim period. The amendments should be applied on a modified retrospective basis, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the amendments are adopted. The Company has determined that this guidance will not have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost; (“ASU 2017-07”). ASU 2017-07 applies to any employer that sponsors a defined benefit pension plan, other postretirement benefit plan, or other types of benefits accounted for under Topic 715. The amendments require that an employer disaggregate the service cost component from the other components of net benefit cost, as follows (1) service cost must be presented in the same line item(s) as other employee compensation costs. These costs are generally included within income from continuing operations, but in some cases may be eligible for capitalization, (2) all other components of net benefit cost must be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented, (3) the amendments permit capitalizing only the service cost component of net benefit cost, assuming such costs meet the criteria required for capitalization by other GAAP , rather than total net benefit cost which has been permitted under prior GAAP. The guidance is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those years. The amendments should be adopted prospectively and allows a practical expedient that permits an employer to use the amounts disclosed in its pension and other postretirement benefit plan note for the prior periods to apply the retrospective presentation requirements. The Company adopted this standard in the first quarter of 2018 and determined that this guidance did not have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangible-Goodwill and other (Topic 350): Simplifying the Test for Goodwill Impairment; (“ASU 2017-04”). ASU 2017-04 simplifies the accounting for goodwill impairment for all entities by requiring impairment charges to be based on the first step in today’s two-step impairment test under ASC Topic 350 and eliminating Step 2 from the goodwill impairment test. As amended, the goodwill impairment test will consist of one step comparing the fair value of a reporting unit with its carrying amount. An entity should recognize a goodwill impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The guidance is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those years. The amendments should be adopted prospectively and early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. At this point in time, the Company does not expect that this guidance will have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business; (“ASU 2017-01”). ASU 2017-01 requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the set of transferred assets and activities is not a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in ASC Topic 606. The guidance is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those years. Early adoption is permitted. The Company has determined that this guidance did not have a material impact on the Company’s consolidated financial statements. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers ; (“ASU 2016-20”). ASU 2016-20 updates the new revenue standard by clarifying issues that arisen from ASU 2014-09, but does not change the core principle of the new standard. The issues addressed in this ASU include: 1) Loan guarantee fees, 2) Impairment testing of contract costs, 3) Interaction of impairment testing with guidance in other topics, 4) Provisions for losses on construction-type and production-type contracts, 5) Scope of topic 606, 6) Disclosure of remaining performance obligations, 7) Disclosure of prior-period performance obligations, 8) Contract modifications, 9) Contract asset vs. receivable, 10) Refund liability, 11) Advertising costs, 12) Fixed-odds wagering contracts in the casino industry, 13) Cost capitalization for advisors to private funds and public funds. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2017. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this new guidance recognized at the date of initial application. The Company’s revenue includes net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. ASU 2016-20, ASU 2016-08 and ASU 2014-09 became effective on January 1, 2018 and the Company refined its disclosures around the standard in the first quarter of 2018. The Company has determined that there is no material change on how the Company recognizes its revenue streams and the adoption of these standards did not have a material impact on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15 , Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments: (“ASU 2016-15”). ASU 2016-15 addresses eight classification issues related to the statement of cash flows: Debt prepayment or debt extinguishment costs; Settlement of zero-coupon bonds; Contingent consideration payments made after a business combination; Proceeds from the settlement of insurance claims; Proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; Distributions received from equity method investees; Beneficial interests in securitization transactions; and Separately identifiable cash flows and application of the predominance principle. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. Entities will apply the standard's provisions using a retrospective transition method to each period presented. The Company adopted this standard in the first quarter of 2018 and determined that this guidance did not have a material impact on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13 , Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments: (“ASU 2016-13”). ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in earlier recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company has dedicated staff and resources in place evaluating the Company’s options including evaluating the appropriate model options and collecting and reviewing loan data for use in these models. The Company is currently still assessing the impact that this new guidance will have on its consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent considerations (Reporting Revenue Gross versus Net); (“ASU 2016-08”). ASU 2016-08 updates the new revenue standard by clarifying the principal versus agent implementation guidance, but does not change the core principle of the new standard. The updates to the principal versus agent guidance: (i) require an entity to determine whether it is a principal or an agent for each distinct good or service (or a distinct bundle of goods or services) to be provided to the customer; (ii) illustrate how an entity that is a principal might apply the control principle to goods, services, or rights to services, when another party is involved in providing goods or services to a customer and (iii) Clarify that the purpose of certain specific control indicators is to support or assist in the assessment of whether an entity controls a good or service before it is transferred to the customer, provide more specific guidance on how the indicators should be considered, and clarify that their relevance will vary depending on the facts and circumstances. For public business entities, the effective date and transition requirements for these amendments are the same as the effective date and transition requirements of ASU 2014-09 which is effective for interim and annual periods beginning after December 15, 2017. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this new guidance recognized at the date of initial application. The Company’s revenue includes net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. ASU 2016-20, ASU 2016-08 and ASU 2014-09 became effective on January 1, 2018 and the Company refined its disclosures around the standard in the first quarter of 2018. The Company has determined that there is no material change on how the Company recognizes its revenue streams and the adoption of these standards did not have a material impact on the Company’s consolidated financial statements, other than the required disclosures. In March 2016, the FASB issued ASU No. 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships (“ASU 2016-05”). ASU 2016-05 requires an entity to discontinue a designated hedging relationship in certain circumstances, including termination of the derivative hedging instrument or if the entity wishes to change any of the critical terms of the hedging relationship. ASU 2016-05 amends Topic 815 to clarify that novation of a derivative (replacing one of the parties to a derivative instrument with a new party) designated as the hedging instrument would not, in and of itself, be considered a termination of the derivative instrument or a change in critical terms requiring discontinuation of the designated hedging relationship. For public business entities, the amendments in ASU 2016-05 are effective for interim and annual periods beginning after December 15, 2016. An entity has an option to apply the amendments in ASU 2016-05 on either a prospective basis or a modified retrospective basis. ASU 2016-05 became effective for the Company on January 1, 2017 and did not have a significant impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 applies a right-of-use (ROU) model that requires a lessee to record, for all leases with a lease term of more than 12 months, an asset representing its right to use the underlying asset and a liability to make lease payments. For leases with a term of 12 months or less, a practical expedient is available whereby a lessee may elect, by class of underlying asset, not to recognize an ROU asset or lease liability. At inception, lessees must classify all leases as either finance or operating based on five criteria. Balance sheet recognition of finance and operating leases is similar, but the pattern of expense recognition in the income statement, as well as the effect on the statement of cash flows, differs depending on the lease classification. For public business entities, the amendments in ASU 2016-02 are effective for interim and annual periods beginning after December 15, 2018. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach which includes a number of optional practical expedients that entities may elect to apply. The Company has reviewed its outstanding lease agreements and has centrally documented the terms of its leases. The Company is still currently evaluating the provisions of ASU 2016-02 in relation to its outstanding leases to determine the potential impact the new standard will have to the Company’s consolidated financial statements. Based on the Company’s current evaluation, the Company estimates that it would have recorded a right to use asset and a lease liability of approximately $83 million if the standard was effective at March 31, 2018. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10); Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). This update is intended to improve the recognition and measurement of financial instruments and it requires an entity to: (i) measure equity investments at fair value through net income, with certain exceptions; (ii) present in OCI the changes in instrument-specific credit risk for financial liabilities measured using the fair value option; (iii) present financial assets and financial liabilities by measurement category and form of financial asset; (iv) calculate the fair value of financial instruments for disclosure purposes based on an exit price and; (v) assess a valuation allowance on deferred tax assets related to unrealized losses of AFS debt securities in combination with other deferred tax assets. ASU 2016-01 also provides an election to subsequently measure certain nonmarketable equity investments at cost less any impairment and adjusted for certain observable price changes and requires a qualitative impairment assessment of such equity investments and amends certain fair value disclosure requirements. For public business entities, the amendments in ASU 2016-01 are effective for interim and annual periods beginning after December 15, 2017. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption of the ASU 2016-01. This guidance became effective on January 1, 2018 and the Company has determined that the implementation of this standard did not have a material impact to the Company’s consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, Topic 606 (“ASU 2014-09”). The new standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under existing guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. In August of 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers, Topic 606: Deferral of the Effective Date, deferring the effective date of ASU 2014-09 until annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this new guidance recognized at the date of initial application. The Company’s revenue includes net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. ASU 2016-20, ASU 2016-08 and ASU 2014-09 became effective on January 1, 2018 and the Company refined its disclosures around the standard in the first quarter of 2018. The Company has determined that there is no material change on how the Company recognizes its revenue streams and the adoption of these standards did not have a material impact on the Company’s consolidated financial statements.

Mergers and Acquisitions

Mergers and Acquisitions	3 Months Ended
	Mar. 31, 2018
Mergers and Acquisitions
Mergers and Acquisitions	Note 4 — Mergers and Acquisitions The following business combinations have occurred over the past two years: · Park Sterling Corporation (“PSC” or “Park”) – November 30, 2017 – Whole bank acquisition · Southeastern Bank Financial Corporation (“SBFC” or “Southeastern”) – January 3, 2017 – Whole bank acquisition Park Sterling Corporation Acquisition On November 30, 2017, SSB acquired all of the outstanding common stock of PSC of Charlotte, North Carolina, the bank holding company for Park Sterling Bank (“PSB”), in a stock transaction. PSC common shareholders received 0.14 shares of the Company’s common stock in exchange for each share of PSC stock resulting in the Company issuing 7,480,343 shares of its common stock. In total, the purchase price for PSC was $693.0 million including the value of “in the money” outstanding stock options totaling $4.3 million. The PSC transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date. The following table presents the assets acquired and liabilities assumed as of November 30, 2017 and their initial and subsequent fair value estimates, as recorded by the Company. Fair values are preliminary and subject to refinement for up to a year after the closing date of the acquisition. Initial Subsequent As Recorded Fair Value Fair Value As Recorded by (Dollars in thousands) by Park Adjustments Adjustments the Company Assets Cash and cash equivalents $ 116,454 $ — $ — $ 116,454 Investment securities 461,261 1,444 (a) 219 (a) 462,924 Loans held for sale 2,200 68,686 (b) — 70,886 Loans, net of allowance and mark 2,346,612 (95,878) (c) (50) (c) 2,250,684 Premises and equipment 61,059 (4,882) (d) (387) (d) 55,790 Intangible assets 73,090 (46,915) (e) — 26,175 OREO and repossessed assets 2,549 (429) (f) 210 (f) 2,330 Bank owned life insurance 72,703 — — 72,703 Deferred tax asset 17,963 11,596 (g) 3 (g) 29,562 Other assets 21,595 (476) (h) — 21,119 Total assets $ 3,175,486 $ (66,854) $ (5) $ 3,108,627 Liabilities Deposits: Noninterest-bearing $ 561,874 $ — $ — $ 561,874 Interest-bearing 1,886,810 2,692 (i) — 1,889,502 Total deposits 2,448,684 2,692 — 2,451,376 Federal funds purchased and securities sold under agreements to repurchase — — — — Other borrowings 329,249 11,689 (j) — 340,938 Other liabilities 24,179 2,131 (k) — 26,310 Total liabilities 2,802,112 16,512 — 2,818,624 Net identifiable assets acquired over (under) liabilities assumed 373,374 (83,366) (5) 290,003 Goodwill — 402,951 5 402,956 Net assets acquired over liabilities assumed $ 373,374 $ 319,585 $ — $ 692,959 Consideration: South State Corporation common shares issued 7,480,343 Purchase price per share of the Company's common stock $ 92.05 Company common stock issued ($688,566) and cash exchanged for fractional shares ($88) $ 688,654 Cash paid for stock option redemptions 4,305 Fair value of total consideration transferred $ 692,959 Explanation of fair value adjustments (a)—Adjustment reflects marking the securities portfolio to fair value as of the acquisition date. (b)—Adjustment reflects a reclass of $68.7 million by SSB of Shared National Credits (loans) from loans held for investment to loans held for sale. (c)—Adjustment reflects the fair value adjustments (discount) of $60.9 million based on the Company’s evaluation of the acquired loan portfolio. This amount excludes the allowance for loan losses (“ALLL”) and fair value adjustment (discount) of $12.5 million and $21.3 million, respectively, recorded by PSC and is net of the $68.7 million reclass related to the Shared National Credits noted in (b). (d)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of the acquired premises and equipment. (e)—Adjustment reflects the recording of a 1.66% Core Deposit Intangible (“CDI”) on the acquired deposit accounts that totaled $26.2 million offset by a write-off of $73.1 million of existing goodwill and CDI acquired from PSC. (f)—Adjustment reflects the fair value adjustments to other real estate owned (“OREO”) based on the Company’s evaluation of the acquired OREO portfolio. (g)—Adjustment to record deferred tax asset related to the fair value adjustments and an adjustment from the PSC tax rate to the SSB tax rate. (h)—Adjustment reflects the write-off of accrued interest receivable and along with certain prepaid expenses. (i)—Adjustment reflects the premium for fixed maturity time deposits of $2.95 million offset by the write-off of existing fair value marks of $253,000 acquired from PSC. (j)—Adjustment reflects the fair value adjustment (discount) of $2.4 million on PSC’s Trust Preferred Securities offset by the write-off of the existing PSC discount on its senior debt and TRUPs of $14.0 million. (k)—Adjustment reflects the fair value adjustments to employee benefit plans of $1.5 million along with other adjustments of miscellaneous liabilities. Comparative and Pro Forma Financial Information for the PSC Acquisition The adjusted results of the Company for the period ended March 31, 2018, include the adjusted results of the acquired assets and assumed liabilities since the acquisition date of November 30, 2017 related to the PSC acquisition. Merger-related charges of $11.3 million are recorded in the consolidated statement of income for the three month ended March 31, 2018; and include incremental costs related to closing of the acquisition, including legal, accounting and auditing, investment banker cost, termination of certain employment related contracts, travel costs, printing, supplies and other costs. The following table discloses the impact of the merger (excluding the impact of merger-related expenses) with PSC for three month ended March 31, 2018. The table also presents certain pro forma information as if PSC had been acquired on January 1, 2017. These results combine the historical results of PSC in the Company’s consolidated statement of income and, while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2017. Merger-related costs of $21.0 million from the SBFC acquisition were incurred during the first quarter of 2017 and were excluded from pro forma information below. In addition, no adjustments have been made to the pro formas to eliminate the provision for loan losses for the three months ended March 31, 2017 of PSC in the amount of $678,000. No adjustments have been made to reduce the impact of any OREO write downs, investment securities sold or repayment of borrowings recognized by PSC in the three months ended March 31, 2017. Expenses related to systems conversions and other costs of integration are expected to be recorded in the second and third quarters of 2018 for the PSC merger. The Company expects to achieve further operating cost savings and other business synergies as a result of the acquisitions which are not reflected in the pro forma amounts below: Estimated/Actual For PSC Pro Forma For the Three Months Three Months (Dollars in thousands) Ended March 31, 2018 Ended March 31, 2017 Total revenues (net interest income plus noninterest income) $ 36,085 $ 167,044 Net adjusted income available to the common shareholder $ 11,072 $ 49,233 Southeastern Bank Financial Corporation Acquisition On January 3, 2017, SSB acquired all of the outstanding common stock of SBFC of Augusta, Georgia, the bank holding company for Georgia Bank & Trust Company of Augusta (“GB&T”), in a stock transaction. SBFC common shareholders received 0.7307 shares of the Company’s common stock in exchange for each share of SBFC stock resulting in the Company issuing 4,978,338 shares of its common stock. In total, the purchase price for SBFC was $435.1 million including the value of “in the money” outstanding stock options totaling $490,000. The SBFC transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date. The following table presents the assets acquired and liabilities assumed as of January 3, 2017 and their initial and subsequent fair value estimates, as recorded by the Company. The Company has up to one year after the acquisition date to make subsequent fair value adjustments. Initial Subsequent As Recorded Fair Value Fair Value As Recorded by (Dollars in thousands) by SBFC Adjustments Adjustments the Company Assets Cash and cash equivalents $ 72,043 $ — $ — $ 72,043 Investment securities 591,824 (1,770) (a) — 590,054 Loans held for sale 13,652 — — 13,652 Loans, net of allowance and mark 1,060,618 (10,668) (b) — 1,049,950 Premises and equipment 25,419 (2,212) (c) 870 (c) 24,077 Intangible assets 140 17,980 (d) — 18,120 OREO and repossessed assets 580 (30) (e) (100) (e) 450 Bank owned life insurance 44,513 — — 44,513 Deferred tax asset 16,247 (687) (f) 515 (f) 16,075 Other assets 7,545 (482) (g) — 7,063 Total assets $ 1,832,581 $ 2,131 $ 1,285 $ 1,835,997 Liabilities Deposits: Noninterest-bearing $ 262,967 $ — $ — $ 262,967 Interest-bearing 1,257,953 — — 1,257,953 Total deposits 1,520,920 — — 1,520,920 Federal funds purchased and securities sold under agreements to repurchase 1,014 — — 1,014 Other borrowings 110,620 (1,120) (h) — 109,500 Other liabilities 19,980 5,553 (i) 2,210 (i) 27,743 Total liabilities 1,652,534 4,433 2,210 1,659,177 Net identifiable assets acquired over (under) liabilities assumed 180,047 (2,302) (925) 176,820 Goodwill — 257,370 925 258,295 Net assets acquired over liabilities assumed $ 180,047 $ 255,068 $ — $ 435,115 Consideration: South State Corporation common shares issued 4,978,338 Purchase price per share of the Company's common stock $ 87.30 Company common stock issued ($434,609) and cash exchanged for fractional shares ($16) $ 434,625 Cash paid for stock option redemptions 490 Fair value of total consideration transferred $ 435,115 Explanation of fair value adjustments (a)—Adjustment reflects marking the securities portfolio to fair value as of the acquisition date. (b)—Adjustment reflects the fair value adjustments of $30.7 million based on the Company’s evaluation of the acquired loan portfolio and excludes the allowance for loan losses (“ALLL”) of $20.1 million recorded by SBFC. (c)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of the acquired premises and equipment. (d)—Adjustment reflects the recording of the core deposit intangible on the acquired deposit accounts that totaled $18.1 million. (e)—Adjustment reflects the fair value adjustments to other real estate owned (“OREO”) and repossessed assets based on the Company’s evaluation of the acquired OREO and repossessed assets portfolio. (f)—Adjustment to record deferred tax asset related to the fair value adjustments. (g)—Adjustment reflects uncollectible portion of accrued interest receivable and loan fees receivable along with the write-off of certain prepaid expenses. (h)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of other borrowings of Trust Preferred Securities with a discount of $2.1 million, netted with premium on certain Federal Home Loan Bank (“FHLB “) advances of $1.0 million. (i)—Adjustment reflects the fair value adjustments to employee benefit plans of $8.3 million netted against an adjustment of other miscellaneous liabilities of $496,000.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2018
Investment Securities
Investment Securities	Note 5 — Investment Securities The following is the amortized cost and fair value of investment securities held to maturity: Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: State and municipal obligations $ 1,274 $ 10 $ — $ 1,284 December 31, 2017: State and municipal obligations $ 2,529 $ 27 $ — $ 2,556 March 31, 2017: State and municipal obligations $ 6,095 $ 122 $ — $ 6,217 The following is the amortized cost and fair value of investment securities available for sale: Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: Government-sponsored entities debt* $ 91,483 $ — $ (1,737) $ 89,746 State and municipal obligations 224,994 2,232 (1,540) 225,686 Mortgage-backed securities** 1,353,356 248 (28,199) 1,325,405 Corporate securities — — — — $ 1,669,833 $ 2,480 $ (31,476) $ 1,640,837 December 31, 2017: Government-sponsored entities debt* $ 86,535 $ 51 $ (1,077) $ 85,509 State and municipal obligations 216,812 3,749 (124) 220,437 Mortgage-backed securities** 1,350,200 2,103 (11,616) 1,340,687 Corporate securities 1,560 — — 1,560 $ 1,655,107 $ 5,903 $ (12,817) $ 1,648,193 March 31, 2017: Government-sponsored entities debt* $ 93,995 $ 25 $ (721) $ 93,299 State and municipal obligations 196,241 4,183 (140) 200,284 Mortgage-backed securities** 1,084,764 5,095 (6,420) 1,083,439 Corporate stocks 2,433 624 (291) 2,766 $ 1,377,433 $ 9,927 $ (7,572) $ 1,379,788 * - The Company’s government-sponsored entities holdings are comprised of debt securities offered by Federal Home Loan Mortgage Corporation (“FHLMC”) or Freddie Mac, Federal National Mortgage Association (“FNMA”) or Fannie Mae, FHLB, and Federal Farm Credit Banks (“FFCB”). ** - All of the mortgage-backed securities are issued by government-sponsored entities; there are no private-label holdings. Also, included in the Company’s mortgage-backed securities are debt securities offered by the Small Business Administration (“SBA”), which have the full faith and credit backing of the United States Government. The following is the amortized cost and fair value of other investment securities: Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: Federal Home Loan Bank stock $ 17,399 $ — $ — $ 17,399 Investment in unconsolidated subsidiaries 3,563 — — 3,563 Other nonmarketable investment securities 2,517 — — 2,517 $ 23,479 $ — $ — $ 23,479 December 31, 2017: Federal Home Loan Bank stock $ 16,967 $ — $ — $ 16,967 Investment in unconsolidated subsidiaries 3,563 — — 3,563 Other nonmarketable investment securities 2,517 — — 2,517 $ 23,047 $ — $ — $ 23,047 March 31, 2017: Federal Home Loan Bank stock $ 11,239 $ — $ — $ 11,239 Investment in unconsolidated subsidiaries 2,262 — — 2,262 Other nonmarketable investment securities 1,225 — — 1,225 $ 14,726 $ — $ — $ 14,726 The amortized cost and fair value of debt securities at March 31, 2018 by contractual maturity are detailed below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without prepayment penalties. Securities Securities Held to Maturity Available for Sale Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ — $ — $ 1,173 $ 1,175 Due after one year through five years — — 122,525 121,675 Due after five years through ten years 1,274 1,284 374,833 369,402 Due after ten years — — 1,171,302 1,148,585 $ 1,274 $ 1,284 $ 1,669,833 $ 1,640,837 Information pertaining to the Company’s securities with gross unrealized losses at March 31, 2018, December 31, 2017 and March 31, 2017, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position is as follows: Less Than Twelve Months Twelve Months or More Gross Gross Unrealized Fair Unrealized Fair (Dollars in thousands) Losses Value Losses Value March 31, 2018: Securities Available for Sale Government-sponsored entities debt $ 918 $ 34,712 $ 819 $ 55,034 State and municipal obligations 1,523 69,118 17 724 Mortgage-backed securities 17,030 938,924 11,169 304,731 Corporate securities — — — — $ 19,471 $ 1,042,754 $ 12,005 $ 360,489 December 31, 2017: Securities Available for Sale Government-sponsored entities debt $ 403 $ 27,442 $ 674 $ 52,324 State and municipal obligations 124 17,400 — — Mortgage-backed securities 4,493 610,051 7,123 322,258 Corporate securities — — — — $ 5,020 $ 654,893 $ 7,797 $ 374,582 March 31, 2017: Securities Available for Sale Government-sponsored entities debt $ 721 $ 87,609 $ — $ — State and municipal obligations 140 10,984 — — Mortgage-backed securities 6,349 601,953 71 1,940 Corporate stocks — — 291 1,451 $ 7,210 $ 700,546 $ 362 $ 3,391 Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to (1) the financial condition and near-term prospects of the issuer, (2) the outlook for receiving the contractual cash flows of the investments, (3) the length of time and the extent to which the fair value has been less than cost, (4) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value or for a debt security whether it is more-likely-than-not that the Company will be required to sell the debt security prior to recovering its fair value, and (5) the anticipated outlook for changes in the general level of interest rates. All debt securities available for sale in an unrealized loss position as of March 31, 2018 continue to perform as scheduled. As part of the Company’s evaluation of its intent and ability to hold investments for a period of time sufficient to allow for any anticipated recovery in the market, the Company considers its investment strategy, cash flow needs, liquidity position, capital adequacy and interest rate risk position. The Company does not currently intend to sell the securities within the portfolio and it is not more-likely-than-not that the Company will be required to sell the debt securities; therefore, management does not consider these investments to be other-than-temporarily impaired at March 31, 2018. Management continues to monitor all of the Company’s securities with a high degree of scrutiny. There can be no assurance that the Company will not conclude in future periods that conditions existing at that time indicate some or all of its securities may be sold or are other than temporarily impaired, which would require a charge to earnings in such periods.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2018
Loans and Allowance for Loan Losses
Loans and Allowance for Loan Losses	Note 6 — Loans and Allowance for Loan Losses The following is a summary of non-acquired loans: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Non-acquired loans: Commercial non-owner occupied real estate: Construction and land development $ 871,141 $ 830,875 $ 646,544 Commercial non-owner occupied 1,050,924 1,008,893 803,998 Total commercial non-owner occupied real estate 1,922,065 1,839,768 1,450,542 Consumer real estate: Consumer owner occupied 1,612,501 1,530,260 1,252,650 Home equity loans 448,582 437,642 396,806 Total consumer real estate 2,061,083 1,967,902 1,649,456 Commercial owner occupied real estate 1,296,738 1,262,776 1,200,004 Commercial and industrial 872,363 815,187 725,974 Other income producing property 198,684 193,847 182,416 Consumer 390,784 378,985 340,292 Other loans 20,795 33,690 15,623 Total non-acquired loans 6,762,512 6,492,155 5,564,307 Less allowance for loan losses (45,203) (43,448) (38,449) Non-acquired loans, net $ 6,717,309 $ 6,448,707 $ 5,525,858 The following is a summary of acquired non-credit impaired loans accounted for under FASB ASC Topic 310-20, net of related discount: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 FASB ASC Topic 310-20 acquired loans: Commercial non-owner occupied real estate: Construction and land development $ 349,532 $ 403,357 $ 141,897 Commercial non-owner occupied 783,466 817,166 217,850 Total commercial non-owner occupied real estate 1,132,998 1,220,523 359,747 Consumer real estate: Consumer owner occupied 683,614 710,611 550,578 Home equity loans 295,721 320,591 186,411 Total consumer real estate 979,335 1,031,202 736,989 Commercial owner occupied real estate 498,541 521,818 238,612 Commercial and industrial 344,171 398,696 136,309 Other income producing property 186,091 196,669 92,044 Consumer 133,802 137,710 151,941 Other — 1,289 — Total FASB ASC Topic 310-20 acquired loans $ 3,274,938 $ 3,507,907 $ 1,715,642 The unamortized discount related to the acquired non-credit impaired loans totaled $55.3 million, $65.2 million, and $26.3 million at March 31, 2018, December 31, 2017, and March 31, 2017, respectively. In accordance with FASB ASC Topic 310-30, the Company aggregated acquired loans that have common risk characteristics into pools of loan categories as described in the table below. The following is a summary of acquired credit impaired loans accounted for under FASB ASC Topic 310-30 (identified as credit impaired at the time of acquisition), net of related discount: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 FASB ASC Topic 310-30 acquired loans: Commercial real estate 233,277 234,595 223,156 Commercial real estate—construction and development 46,219 49,649 57,343 Residential real estate 248,766 260,787 266,484 Consumer 48,801 51,453 58,688 Commercial and industrial 24,295 26,946 26,225 Total FASB ASC Topic 310-30 acquired loans 601,358 623,430 631,896 Less allowance for loan losses (4,084) (4,627) (4,556) FASB ASC Topic 310-30 acquired loans, net $ 597,274 $ 618,803 $ 627,340 Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of FASB ASC Topic 310-30 acquired loans impaired and non-impaired at the acquisition date for PSC (November 30, 2017) are as follows: November 30, 2017 Loans Impaired (Dollars in thousands) at Acquisition Contractual principal and interest $ 92,600 Non-accretable difference (12,840) Cash flows expected to be collected 79,760 Accretable difference (8,829) Carrying value $ 70,931 The table above excludes $2.2 billion ($2.3 billion in contractual principal less a $50.1 million fair value adjustment) in acquired loans at fair value that were identified as either performing with no discount related to the credit or as revolving lines of credit (commercial or consumer) as of the acquisition date and will be accounted for under FASB ASC Topic 310-20. Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of FASB ASC Topic 310-30 acquired loans impaired and non-impaired at the acquisition date for SBFC (January 3, 2017) are as follows: January 3, 2017 Loans Impaired (Dollars in thousands) at Acquisition Contractual principal and interest $ 73,365 Non-accretable difference (12,912) Cash flows expected to be collected 60,453 Accretable difference (4,603) Carrying value $ 55,850 The table above excludes $991.5 million ($1.01 billion in contractual principal less a $18.8 million fair value adjustment) in acquired loans at fair value that were identified as either performing with no discount related to the credit or as revolving lines of credit (commercial or consumer) as of the acquisition date and will be accounted for under FASB ASC Topic 310-20. Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting carrying values of acquired credit impaired loans as of March 31, 2018, December 31, 2017 and March 31, 2017 are as follows: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Contractual principal and interest $ 765,057 $ 795,850 $ 812,892 Non-accretable difference (33,841) (39,324) (31,273) Cash flows expected to be collected 731,216 756,526 781,619 Accretable yield (129,858) (133,096) (149,723) Carrying value $ 601,358 $ 623,430 $ 631,896 Allowance for acquired loan losses $ (4,084) $ (4,627) $ (4,556) Income on acquired credit impaired loans that are not impaired at the acquisition date is recognized in the same manner as loans impaired at the acquisition date. A portion of the fair value discount on acquired non-impaired loans has been ascribed as an accretable difference that is accreted into interest income over the estimated remaining life of the loans. The remaining nonaccretable difference represents cash flows not expected to be collected. The following are changes in the carrying value of acquired credit impaired loans: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 618,803 $ 602,546 Fair value of acquired loans — 55,850 Net reductions for payments, foreclosures, and accretion (22,072) (29,895) Change in the allowance for loan losses on acquired loans 543 (1,161) Balance at end of period, net of allowance for loan losses on acquired loans $ 597,274 $ 627,340 The table below reflects refined accretable yield balance for acquired credit impaired loans: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 133,096 $ 155,379 Addition from the SBFC acquisition — 4,603 Accretion (12,366) (15,214) Reclass of nonaccretable difference due to improvement in expected cash flows 9,204 5,062 Other changes, net (76) (107) Balance at end of period $ 129,858 $ 149,723 In the first quarter of 2018, the accretable yield balance declined by $3.2 million as loan accretion (income) of $12.4 million was recognized. This was partially offset by improved expected cash flows of $9.2 million during the first quarter of 2018. Our loan loss policy adheres to GAAP as well as interagency guidance. The ALLL is based upon estimates made by management. We maintain an ALLL at a level that we believe is appropriate to cover estimated credit losses on individually evaluated loans that are determined to be impaired as well as estimated credit losses inherent in the remainder of our loan portfolio. Arriving at the allowance involves a high degree of management judgment and results in a range of estimated losses. We regularly evaluate the adequacy of the allowance through our internal risk rating system, outside credit review, and regulatory agency examinations to assess the quality of the loan portfolio and identify problem loans. The evaluation process also includes our analysis of current economic conditions, composition of the loan portfolio, past due and nonaccrual loans, concentrations of credit, lending policies and procedures, and historical loan loss experience. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on, among other factors, changes in economic conditions in our markets. In addition, as noted above, regulatory agencies, as an integral part of their examination process, periodically review our allowances for losses on loans. These agencies may require management to recognize additions to the allowances based on their judgments about information available to them at the time of their examination. Because of these and other factors, it is possible that the allowances for losses on loans may change. The provision for loan losses is charged to expense in an amount necessary to maintain the allowance at an appropriate level. The ALLL on non‑acquired loans consists of general and specific reserves. The general reserves are determined by applying loss percentages to the portfolio that are based on historical loss experience for each class of loans and management’s evaluation and “risk grading” of the loan portfolio. Additionally, the general economic and business conditions affecting key lending areas, credit quality trends, collateral values, loan volumes and concentrations, seasoning of the loan portfolio, the findings of internal and external credit reviews and results from external bank regulatory examinations are included in this evaluation. Currently, these adjustments are applied to the non‑acquired loan portfolio when estimating the level of reserve required. The specific reserves are determined on a loan‑by‑loan basis based on management’s evaluation of our exposure for each credit, given the current payment status of the loan and the value of any underlying collateral. These are loans classified by management as doubtful or substandard. For such loans that are also classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. Generally, the need for specific reserve is evaluated on impaired loans, and once a specific reserve is established for a loan, a charge-off of that amount occurs in the quarter subsequent to the establishment of the specific reserve. Loans that are determined to be impaired are provided a specific reserve, if necessary, and are excluded from the calculation of the general reserves. Beginning with the First Financial Holdings, Inc. acquisition in 2013, the Company segregates the acquired loan portfolio into performing loans (“non‑credit impaired) and purchased credit impaired loans. The performing loans and revolving type loans are accounted for under FASB ASC 310‑20, with each loan being accounted for individually. The ALLL on these loans will be measured and recorded consistent with non‑acquired loans. The acquired credit impaired loans will follow the description in the next paragraph. In determining the acquisition date fair value of purchased loans, and in subsequent accounting, the Company generally aggregates purchased loans into pools of loans with common risk characteristics. Expected cash flows at the acquisition date in excess of the fair value of loans are recorded as interest income over the life of the loans using a level yield method if the timing and amount of the future cash flows of the pool is reasonably estimable. Subsequent to the acquisition date, increases in cash flows over those expected at the acquisition date are reclassified from the non‑accretable difference to accretable yield and recognized as interest income prospectively. Decreases in expected cash flows after the acquisition date are recognized by recording an ALLL. Management analyzes the acquired loan pools using various assessments of risk to determine an expected loss. The expected loss is derived based upon a loss given default based upon the collateral type and/or detailed review by loan officers and the probability of default that is determined based upon historical data at the loan level. All acquired loans managed by Special Asset Management are reviewed quarterly and assigned a loss given default. Acquired loans not managed by Special Asset Management are reviewed twice a year in a similar method to the Company’s originated portfolio of loans which follow review thresholds based on risk rating categories. In the fourth quarter of 2015, the Company modified its methodology to a more granular approach in determining loss given default on substandard loans with a net book balance between $100,000 and $500,000 by adjusting the loss given default to 90% of the most current collateral valuation based on appraised value. Substandard loans greater than $500,000 were individually assigned loss given defaults each quarter. Trends are reviewed in terms of accrual status, past due status, and weighted‑average grade of the loans within each of the accounting pools. In addition, the relationship between the change in the unpaid principal balance and change in the mark is assessed to correlate the directional consistency of the expected loss for each pool. An aggregated analysis of the changes in allowance for loan losses is as follows: Non-acquired Acquired Non-Credit Acquired Credit (Dollars in thousands) Loans Impaired Loans Impaired Loans Total Three Months Ended March 31, 2018: Balance at beginning of period $ 43,448 $ — $ 4,627 $ 48,075 Loans charged-off (1,169) (334) — (1,503) Recoveries of loans previously charged off (1) 802 165 — 967 Net charge-offs (367) (169) — (536) Provision for loan losses charged to operations 2,122 169 163 2,454 Reduction due to loan removals — — (706) (706) Balance at end of period $ 45,203 $ — $ 4,084 $ 49,287 Three Months Ended March 31, 2017: Balance at beginning of period $ 36,960 $ — $ 3,395 $ 40,355 Loans charged-off (1,297) (389) — (1,686) Recoveries of loans previously charged off (1) 669 63 — 732 Net charge-offs (628) (326) — (954) Provision for loan losses charged to operations 2,117 326 1,264 3,707 Reduction due to loan removals — — (103) (103) Balance at end of period $ 38,449 $ — $ 4,556 $ 43,005 (1) – Recoveries related to acquired credit impaired loans are recorded through other noninterest income on the consolidated statement of income and do not run through the ALLL. The following tables present a disaggregated analysis of activity in the allowance for loan losses and loan balances for non-acquired loans: Construction Commercial Commercial Consumer Other Income & Land Non-owner Owner Owner Home Commercial Producing Other (Dollars in thousands) Development Occupied Occupied Occupied Equity & Industrial Property Consumer Loans Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance, December 31, 2017 $ 5,921 $ 6,525 $ 8,128 $ 9,668 $ 3,250 $ 5,488 $ 1,375 $ 2,788 $ 305 $ 43,448 Charge-offs (35) — — (4) (66) (85) — (979) — (1,169) Recoveries 442 2 8 23 101 15 8 203 — 802 Provision (benefit) (481) 271 210 506 (48) 915 10 887 (148) 2,122 Balance, March 31, 2018 $ 5,847 $ 6,798 $ 8,346 $ 10,193 $ 3,237 $ 6,333 $ 1,393 $ 2,899 $ 157 $ 45,203 Loans individually evaluated for impairment $ 767 $ 110 $ 63 $ 35 $ 73 $ 489 $ 166 $ 9 $ — $ 1,712 Loans collectively evaluated for impairment $ 5,080 $ 6,688 $ 8,283 $ 10,158 $ 3,164 $ 5,844 $ 1,227 $ 2,890 $ 157 $ 43,491 Loans: Loans individually evaluated for impairment $ 46,198 $ 1,181 $ 5,578 $ 5,493 $ 3,168 $ 1,677 $ 3,086 $ 315 $ — $ 66,696 Loans collectively evaluated for impairment 824,943 1,049,743 1,291,160 1,607,008 445,414 870,686 195,598 390,469 20,795 6,695,816 Total non-acquired loans $ 871,141 $ 1,050,924 $ 1,296,738 $ 1,612,501 $ 448,582 $ 872,363 $ 198,684 $ 390,784 $ 20,795 $ 6,762,512 Three Months Ended March 31, 2017 Allowance for loan losses: Balance , December 31, 2016 $ 4,091 $ 4,980 $ 8,022 $ 7,820 $ 3,211 $ 4,842 $ 1,542 $ 2,350 $ 102 $ 36,960 Charge-offs (405) — — (123) (34) (22) — (713) — (1,297) Recoveries 154 41 7 49 74 90 43 211 — 669 Provision (benefit) 809 443 (135) 362 205 214 (240) 595 (136) 2,117 Balance, March 31, 2017 $ 4,649 $ 5,464 $ 7,894 $ 8,108 $ 3,456 $ 5,124 $ 1,345 $ 2,443 $ (34) $ 38,449 Loans individually evaluated for impairment $ 459 $ 158 $ 60 $ 68 $ 297 $ 387 $ 224 $ 5 $ — $ 1,658 Loans collectively evaluated for impairment $ 4,190 $ 5,306 $ 7,834 $ 8,040 $ 3,159 $ 4,737 $ 1,121 $ 2,438 $ (34) $ 36,791 Loans: Loans individually evaluated for impairment $ 9,286 $ 775 $ 6,251 $ 4,712 $ 2,432 $ 1,270 $ 2,408 $ 189 $ — $ 27,323 Loans collectively evaluated for impairment 637,258 803,223 1,193,753 1,247,938 394,374 724,704 180,008 340,103 15,623 5,536,984 Total non-acquired loans $ 646,544 $ 803,998 $ 1,200,004 $ 1,252,650 $ 396,806 $ 725,974 $ 182,416 $ 340,292 $ 15,623 $ 5,564,307 The following tables present a disaggregated analysis of activity in the allowance for loan losses and loan balances for acquired non-credit impaired loans: Construction Commercial Commercial Consumer Other Income & Land Non-owner Owner Owner Home Commercial Producing (Dollars in thousands) Development Occupied Occupied Occupied Equity & Industrial Property Consumer Other Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance at beginning of period $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Charge-offs (1) — — (70) (82) (43) — (138) — (334) Recoveries 1 — — 57 51 53 — 3 — 165 Provision (benefit) — — — 13 31 (10) — 135 — 169 Balance, March 31, 2018 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 349,532 783,466 498,541 683,614 295,721 344,171 186,091 133,802 — 3,274,938 Total acquired non-credit impaired loans $ 349,532 $ 783,466 $ 498,541 $ 683,614 $ 295,721 $ 344,171 $ 186,091 $ 133,802 $ — $ 3,274,938 Three Months Ended March 31, 2017 Allowance for loan losses: Balance at beginning of period $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Charge-offs — — — (313) — (2) — (74) — (389) Recoveries 1 — — 39 9 1 1 12 — 63 Provision (benefit) (1) — — 274 (9) 1 (1) 62 — 326 Balance, March 31, 2017 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 141,897 217,850 238,612 550,578 186,411 136,309 92,044 151,941 — 1,715,642 Total acquired non-credit impaired loans $ 141,897 $ 217,850 $ 238,612 $ 550,578 $ 186,411 $ 136,309 $ 92,044 $ 151,941 $ — $ 1,715,642 The following tables present a disaggregated analysis of activity in the allowance for loan losses and loan balances for acquired credit impaired loans: Commercial Real Estate- Commercial Construction and Residential Commercial (Dollars in thousands) Real Estate Development Real Estate Consumer and Industrial Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance, December 31, 2017 $ $ $ $ $ $ Provision (benefit) for loan losses (14) 88 900 163 Reduction due to loan removals (13) — Balance, March 31, 2018 $ 261 $ $ $ $ $ Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ 261 $ $ $ $ $ Loans:* Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment Total acquired credit impaired loans $ $ $ $ $ $ Three Months Ended March 31, 2017 Allowance for loan losses: Balance , December 31, 2016 $ 41 $ 139 $ 2,419 $ 558 $ 238 $ 3,395 Provision for loan losses 291 (3) 752 37 187 1,264 Reduction due to loan removals 2 (6) (63) (6) (30) (103) Balance, March 31, 2017 $ 334 $ 130 $ 3,108 $ 589 $ 395 $ 4,556 Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ 334 $ 130 $ 3,108 $ 589 $ 395 $ 4,556 Loans:* Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 223,156 57,343 266,484 58,688 26,225 631,896 Total acquired credit impaired loans $ 223,156 $ 57,343 $ 266,484 $ 58,688 $ 26,225 $ 631,896 *— The carrying value of acquired credit impaired loans includes a non accretable difference which is primarily associated with the assessment of credit quality of acquired loans. As part of the ongoing monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators, including trends related to (i) the level of classified loans, (ii) net charge-offs, (iii) non-performing loans (see details below), and (iv) the general economic conditions of the markets that we serve. The Company utilizes a risk grading matrix to assign a risk grade to each of its loans. A description of the general characteristics of the risk grades is as follows: · Pass—These loans range from minimal credit risk to average, however, still acceptable credit risk. · Special mention—A special mention loan has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or the institution’s credit position at some future date. · Substandard—A substandard loan is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness, or weaknesses, that may jeopardize the liquidation of the debt. A substandard loan is characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. · Doubtful—A doubtful loan has all of the weaknesses inherent in one classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of the currently existing facts, conditions and values, highly questionable and improbable. The following table presents the credit risk profile by risk grade of commercial loans for non-acquired loans: Construction & Development Commercial Non-owner Occupied Commercial Owner Occupied March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 857,307 $ 818,240 $ 633,953 $ 1,040,669 $ 999,049 $ 790,687 $ 1,267,759 $ 1,232,927 $ 1,167,531 Special mention 10,499 8,758 8,868 8,497 7,864 11,233 22,619 23,575 20,277 Substandard 3,335 3,877 3,723 1,758 1,980 2,078 6,360 6,274 12,196 Doubtful — — — — — — — — — $ 871,141 $ 830,875 $ 646,544 $ 1,050,924 $ 1,008,893 $ 803,998 $ 1,296,738 $ 1,262,776 $ 1,200,004 Commercial & Industrial Other Income Producing Property Commercial Total March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 857,567 $ 801,885 $ 703,747 $ 191,856 $ 186,158 $ 174,321 $ 4,215,158 $ 4,038,259 $ 3,470,239 Special mention 12,286 11,130 16,746 5,321 6,034 6,176 59,222 57,361 63,300 Substandard 2,510 2,172 5,481 1,507 1,655 1,919 15,470 15,958 25,397 Doubtful — — — — — — — — — $ 872,363 $ 815,187 $ 725,974 $ 198,684 $ 193,847 $ 182,416 $ 4,289,850 $ 4,111,578 $ 3,558,936 The following table presents the credit risk profile by risk grade of consumer loans for non-acquired loans: Consumer Owner Occupied Home Equity Consumer March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 1,584,427 $ 1,502,016 $ 1,225,556 $ 435,282 $ 424,369 $ 382,387 $ 389,386 $ 377,425 $ 338,473 Special mention 13,329 13,902 13,903 6,767 6,749 7,597 301 313 625 Substandard 14,745 14,342 13,191 6,533 6,524 6,822 1,097 1,247 1,194 Doubtful — — — — — — — — — $ 1,612,501 $ 1,530,260 $ 1,252,650 $ 448,582 $ 437,642 $ 396,806 $ 390,784 $ 378,985 $ 340,292 Other Consumer Total March 31, 2018 December 31, 2017 March 31, 2017 March 31, 2018 December 31, 2017 March 31, 2017 Pass $ 20,795 $ 33,690 $ 15,623 $ 2,429,890 $ 2,337,500 $ 1,962,039 Special mention — — — 20,397 20,964 22,125 Substandard — — — 22,375 22,113 21,207 Doubtful — — — — — — $ 20,795 $ 33,690 $ 15,623 $ 2,472,662 $ 2,380,577 $ 2,005,371 The following table presents the credit risk profile by risk grade of total non-acquired loans: Total Non-acquired Loans March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Pass $ 6,645,048 $ 6,375,759 $ 5,432,278 Special mention 79,619 78,325 85,425 Substandard 37,845 38,071 46,604 Doubtful — — — $ 6,762,512 $ 6,492,155 $ 5,564,307 The following table presents the credit risk profile by risk grade of commercial loans for acquired non-credit impaired loans: Commercial Non-owner Construction & Development Occupied Commercial Owner Occupied March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 345,635 $ 394,139 $ 139,748 $ 775,924 $ 809,241 $ 213,827 $ 490,089 $ 513,861 $ 233,397 Special mention 2,892 4,602 1,316 7,533 7,913 3,937 8,254 7,740 5,057 Substandard 1,005 4,616 833 9 12 86 198 217 158 Doubtful — — — — — — — — — $ 349,532 $ 403,357 $ 141,897 $ 783,466 $ 817,166 $ 217,850 $ 498,541 $ 521,818 $ 238,612 Other Income Producing Commercial & Industrial Property Commercial Total March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 327,409 $ 388,342 $ 132,474 $ 180,825 $ 191,229 $ 89,596 $ 2,119,882 $ 2,296,812 $ 809,042 Special mention 8,049 9,883 3,787 4,369 4,547 1,741 31,097 34,685 15,838 Substandard 8,713 471 48 897 893 707 10,822 6,209 1,832 Doubtful — — — — — — — — — $ 344,171 $ 398,696 $ 136,309 $ 186,091 $ 196,669 $ 92,044 $ 2,161,801 $ 2,337,706 $ 826,712 The following table presents the credit risk profile by risk grade of consumer loans for acquired non-credit impaired loans: Consumer Owner Occupied Home Equity Consumer March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 676,981 $ 703,557 $ 546,049 $ 279,487 $ 301,842 $ 176,678 $ 130,915 $ 134,530 $ 148,798 Special mention 4,484 4,165 2,623 8,942 10,477 4,700 520 541 1,243 Substandard 2,149 2,889 1,906 7,292 8,272 5,033 2,367 2,639 1,900 Doubtful — — — — — — — — — $ 683,614 $ 710,611 $ 550,578 $ 295,721 $ 320,591 $ 186,411 $ 133,802 $ 137,710 $ 151,941 Other Consumer Total March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 Pass $ — $ 1,289 $ — $ 1,087,383 $ 1,141,218 $ 871,525 Special mention — — — 13,946 15,183 8,566 Substandard — — — 11,808 13,800 8,839 Doubtful — — — — — — $ — $ 1,289 $ — $ 1,113,137 $ 1,170,201 $ 888,930 The following table presents the credit risk profile by risk grade of total acquired non-credit impaired loans: Total Acquired Non-credit Impaired Loans March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Pass $ 3,207,265 $ 3,438,030 $ 1,680,567 Special mention 45,043 49,868 24,404 Substandard 22,630 20,009 10,671 Doubtful — — — $ 3,274,938 $ 3,507,907 $ 1,715,642 The following table presents the credit risk profile by risk grade of acquired credit impaired loans (identified as credit-impaired at the time of acquisition), net of the related discount (this table should be read in conjunction with the allowance for acquired credit impaired loan losses table found on page 26): Commercial Real Estate— Construction and Commercial Real Estate Development March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 Pass $ 171,585 $ 177,231 $ 170,623 $ 28,501 $ 29,620 $ 28,157 Special mention 24,550 28,708 24,412 4,654 5,132 15,117 Substandard 37,142 28,656 28,121 13,064 14,897 14,069 Doubtful — — — — — — $ 233,277 $ 234,595 $ 223,156 $ 46,219 $ 49,649 $ 57,343 Residential Real Estate Consumer Commercial & Industrial March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 129,952 $ 135,974 $ 142,847 $ 7,247 $ 8,001 $ 9,704 $ 17,163 $ 18,522 $ 16,869 Special mention 50,845 54,500 53,539 16,329 17,214 19,124 1,132 1,169 4,645 Substandard 67,969 70,313 70,098 25,225 26,238 29,860 6,000 7,255 4,711 Doubtful — — — — — — — — — $ 248,766 $ 260,787 $ 266,484 $ 48,801 $ 51,453 $ 58,688 $ 24,295 $ 26,946 $ 26,225 Total Acquired Credit Impaired Loans March 31, December 31, March 31, 2018 2017 2017 Pass $ 354,448 $ 369,348 $ 368,200 Special mention 97,510 106,723 116,837 Substandard 149,400 147,359 146,859 Doubtful — — — $ 601,358 $ 623,430 $ 631,896 The risk grading of acquired credit impaired loans is determined utilizing a loan’s contractual balance, while the amount recorded in the financial statements and reflected above is the carrying value. The following table presents an aging analysis of past due loans, segregated by class for non-acquired loans: 30 - 59 Days 60 - 89 Days 90+ Days Total Total (Dollars in thousands) Past Due Past Due Past Due Past Due Current Loans March 31, 2018 Commercial real estate: Construction and land development $ 673 $ 4 $ 133 $ 810 $ 870,331 $ 871,141 Commercial non-owner occupied 89 20 707 816 1,050,108 1,050,924 Commercial owner occupied 573 1,218 1,702 3,493 1,293,245 1,296,738 Consumer real estate: Consumer owner occupied 1,274 601 1,598 3,473 1,609,028 1,612,501 Home equity loans 1,452 65 1,423 2,940 445,642 448,582 Commercial and industrial 983 476 899 2,358 870,005 872,363 Other income producing property 360 108 125 593 198,091 198,684 Consumer 134 160 496 790 389,994 390,784 Other loans — — — — 20,795 20,795 $ 5,538 $ 2,652 $ 7,083 $ 15,273 $ 6,747,239 $ 6,762,512 December 31, 2017 Commercial real estate: Construction and land development $ 391 $ 63 $ 401 $ 855 $ 830,020 $ 830,875 Commercial non-owner occupied 297 398 51 746 1,008,147 1,008,893 Commercial owner occupied 2,227 382 1,721 4,330 1,258,446 1,262,776 Consumer real estate: Consumer owner occupied 1,291 140 1,943 3,374 1,526,886 1,530,260 Home equity loans 1,209 372 1,684 3,265 434,377 437,642 Commercial and industrial 477 57 915 1,449 813,738 815,187 Other income producing property 223 255 198 676 193,171 193,847 Consumer 525 196 623 1,344 377,641 378,985 Other loans — — — — 33,690 33,690 $ 6,640 $ 1,863 $ 7,536 $ 16,039 $ 6,476,116 $ 6,492,155 March 31, 2017 Commercial real estate: Construction and land development $ 345 $ 100 $ 471 $ 916 $ 645,628 $ 646,544 Commercial non-owner occupied 759 664 304 1,727 802,271 803,998 Commercial owner occupied 1,811 1,988 1,375 5,174 1,194,830 1,200,004 Consumer real estate: Consumer owner occupied 1,076 31 993 2,100 1,250,550 1,252,650 Home equity loans 434 341 1,404 2,179 394,627 396,806 Commercial and industrial 366 159 174 699 725,275 725,974 Other income producing property 310 104 190 604 181,812 182,416 Consumer 273 114 527 914 339,378 340,292 Other loans — — — — 15,623 15,623 $ 5,374 $ 3,501 $ 5,438 $ 14,313 $ 5,549,994 $ 5,564,307 The following table presents an aging analysis of past due loans, segregated by class for acquired non-credit impaired loans: 30 - 59 Days 60 - 89 Days 90+ Days Total Total (Dollars in thousands) Past Due Past Due Past Due Past Due Current Loans March 31, 2018 Commercial real estate: Construction and land development $ 1,788 $ 115 $ 288 $ 2,191 $ 347,341 $ 349,532 Commercial non-owner occupied 242 — 134 376 783,090 783,466 Commercial owner occupied 1,142 — — 1,142 497,399 498,541 Consumer real estate: Consumer owner occupied 1,304 76 786 2,166 681,448 683,614 Home equity loans 1,881 833 2,125 4,839 290,882 295,721 Commercial and industrial 1,998 27 87 2,112 342,059 344,171 Other income producing property 101 69 195 365 185,726 186,091 Consumer 287 138 1,118 1,543 132,259 133,802 $ $ $ $ $ $ December 31, 2017 Commercial real estate: Construction and land development $ 675 $ 113 $ 101 $ 889 $ 402,468 $ 403,357 Commercial non-owner occupied 12 321 — 333 816,833 817,166 Commercial owner occupied 642 — 189 831 520,987 521,818 Consumer real estate: Consumer owner occupied 673 204 867 1,744 708,867 710,611 Home equity loans 3,639 609 1,704 5,952 314,639 320,591 Comme

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2018
Other Real Estate Owned
Other Real Estate Owned	Note 7—Other Real Estate Owned The following is a summary of information pertaining to OREO: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning balance $ 11,203 $ 18,316 Acquired in Southeastern Bank acquisition — 550 Acquired in Park Sterling Corp. acquisition 210 — Additions 2,895 4,284 Writedowns (777) (936) Sold (2,458) (2,207) Ending Balance $ 11,073 $ 20,007 At March 31, 2018, there were a total of 77 properties included in OREO compared to 101 properties at March 31, 2017. At March 31, 2018, the Company had $2.7 million in residential real estate included in OREO and $6.2 million in residential real estate consumer mortgage loans in the process of foreclosure .

Deposits

Deposits	3 Months Ended
	Mar. 31, 2018
Deposits
Deposits	Note 8 — Deposits The Company’s total deposits are comprised of the following: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Certificates of deposit $ 1,765,576 $ 1,738,384 $ 1,060,048 Interest-bearing demand deposits 5,308,154 5,300,108 3,981,920 Non-interest bearing demand deposits 3,120,818 3,047,432 2,599,111 Savings deposits 1,464,074 1,443,918 1,388,388 Other time deposits 4,476 2,924 3,971 Total deposits $ 11,663,098 $ 11,532,766 $ 9,033,438 At March 31, 2018, December 31, 2017, and March 31, 2017, the Company had $340.9 million, $325.3 million, and $196.9 million in certificates of deposits of $250,000 and greater, respectively. At March 31, 2018, December 31, 2017, and March 31, 2017, the Company had $35.0 million, $43.6 million and $55.2 million, in traditional, out-of-market brokered deposits, respectively. The increase in certificates of deposits of $250,000 and greater from March 31, 2107 was primarily the result of deposits acquired through the merger with PSC.

Retirement Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2018
Retirement Plans
Retirement Plans	Note 9 — Retirement Plans The Company and the Bank provide certain retirement benefits to their employees in the form of a non-contributory defined benefit pension plan and an employees’ savings plan. The non-contributory defined benefit pension plan covers all employees hired on or before December 31, 2005, who have attained age 21, and who have completed a year of eligible service. Employees hired on or after January 1, 2006 are not eligible to participate in the non-contributory defined benefit pension plan, but are eligible to participate in the employees’ savings plan. On this date, a new benefit formula applies only to participants who have not attained age 45 or who do not have five years of service. Effective July 1, 2009, the Company suspended the accrual of benefits for pension plan participants under the non-contributory defined benefit plan. The pension plan remained suspended as of March 31, 2018. The components of net periodic pension expense (benefit) recognized are as follows: Three Months Ended (Dollars in thousands) 2018 2017 Interest cost $ $ Service cost Expected return on plan assets Recognized net actuarial loss Net periodic pension benefit $ $ Based on the immaterial nature of the components of the net periodic pension expense (benefit), the Company has recorded the entire amount in the line item salaries and employee benefits on the statement of income. The Company did not contribute to the pension plan for the three months ended March 31, 2018, and does not expect to make any additional contributions during the remainder of 2018. The Company reserves the right to contribute between the minimum required and maximum deductible amounts as determined under applicable federal laws. Under the provisions of Internal Revenue Code Section 401(k), electing employees are eligible to participate in the employees’ savings plan after attaining age 21. Plan participants elect to contribute portions of their annual base compensation as a before tax contribution. Employer contributions may be made from current or accumulated net profits. Participants may elect to contribute 1% to 50% of annual base compensation as a before tax contribution. In 2017, employees participating in the plan received a 100% matching of their 401(k) plan contribution, up to 5% of their salary. The employees were also eligible for an additional 1% discretionary matching contribution contingent upon achievement of the Company’s annual financial goals which would be paid in the first quarter of the following year. The Company met its financials goals in 2017 and paid the 1% discretionary matching contribution in the first quarter of 2018. Also in 2018, the Company changed the 100% matching of their 401(k) plan contribution to, up to 4% of the participant’s salary and raised the discretionary matching contribution to 2% upon achievement of the Company’s 2018 financial goals. The Company expensed $2.4 million and $1.6 million for the 401(k) plan during the three months ended March 31, 2018 and 2017, respectively. Employees can enter the savings plan on or after the first day of each month. The employee may enter into a salary deferral agreement at any time to select an alternative deferral amount or to elect not to defer in the plan. If the employee does not elect an investment allocation, the plan administrator will select a retirement-based portfolio according to the employee’s number of years until normal retirement age. The plan’s investment valuations are generally provided on a daily basis.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share
Earnings Per Share	Note 10 — Earnings Per Share Basic earnings per share are calculated by dividing net income by the weighted-average shares of common stock outstanding during each period, excluding non-vested shares. The Company’s diluted earnings per share are based on the weighted-average shares of common stock outstanding during each period plus the maximum dilutive effect of common stock issuable upon exercise of stock options or vesting of restricted shares. The weighted-average number of shares and equivalents are determined after giving retroactive effect to stock dividends and stock splits. The following table sets forth the computation of basic and diluted earnings per share: Three Months Ended (Dollars and shares in thousands, except for per share amounts) 2018 2017 Basic earnings per common share: Net income $ 42,326 $ 18,264 Weighted-average basic common shares 36,646 28,892 Basic earnings per common share $ $ Diluted earnings per share: Net income $ 42,326 $ 18,264 Weighted-average basic common shares 36,646 28,892 Effect of dilutive securities 253 267 Weighted-average dilutive shares 36,899 29,159 Diluted earnings per common share $ 1.15 $ 0.63 The calculation of diluted earnings per common share excludes outstanding stock options for which the results would have been anti-dilutive under the treasury stock method as follows: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Number of shares Range of exercise prices $ to $ $ to $

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2018
Share-Based Compensation
Share-Based Compensation	Note 11 — Share-Based Compensation The Company’s 2004 and 2012 share-based compensation plans are long-term retention plans intended to attract, retain, and provide incentives for key employees and non-employee directors in the form of incentive and non-qualified stock options, restricted stock, and restricted stock units (“RSUs”). Stock Options With the exception of non-qualified stock options granted to directors under the 2004 and 2012 plans, which in some cases may be exercised at any time prior to expiration and in some other cases may be exercised at intervals less than a year following the grant date, incentive stock options granted under the plans may not be exercised in whole or in part within a year following the date of the grant, as these incentive stock options become exercisable in 25% increments pro ratably over the four-year period following the grant date. The options are granted at an exercise price at least equal to the fair value of the common stock at the date of grant and expire ten years from the date of grant. No options were granted under the 2004 plan after January 26, 2012, and the 2004 plan is closed other than for any options still unexercised and outstanding. The 2012 plan is the only plan from which new share-based compensation grants may be issued. It is the Company’s policy to grant options out of the 1,684,000 shares registered under the 2012 plan, of which no more than 817,476 shares can be granted as restricted stock or RSUs. Activity in the Company’s stock option plans is summarized in the following table. All information has been retroactively adjusted for stock dividends and stock splits. Weighted Weighted Average Aggregate Average Remaining Intrinsic Shares Price (Yrs.) (000's) Outstanding at January 1, 2018 218,689 $ 52.75 Granted 34,407 91.05 Exercised (2,240) 29.95 Forfeited (5,806) 91.35 Outstanding at March 31, 2018 245,050 57.42 5.78 $ 7,194 Exercisable at March 31, 2018 171,299 46.05 4.42 $ 6,767 Weighted-average fair value of options granted during the year $ The fair value of options is estimated at the date of grant using the Black-Scholes option pricing model and expensed over the options’ vesting periods. The following weighted-average assumptions were used in valuing options issued: Three months ended March 31, Dividend yield % % Expected life years years Expected volatility % % Risk-free interest rate % % As of March 31, 2018, there was $2.0 million of total unrecognized compensation cost related to nonvested stock option grants under the plans. The cost is expected to be recognized over a weighted-average period of 1.87 years as of March 31, 2018. The total fair value of shares vested during the three months ended March 31, 2018 was $700,000. Restricted Stock The Company from time-to-time also grants shares of restricted stock to key employees and non-employee directors. These awards help align the interests of these employees and directors with the interests of the shareholders of the Company by providing economic value directly related to increases in the value of the Company’s stock. The value of the stock awarded is established as the fair market value of the stock at the time of the grant. The Company recognizes expenses, equal to the total value of such awards, ratably over the vesting period of the stock grants. Restricted stock grants to employees typically “cliff vest” after four years. Grants to non-employee directors typically vest within a 12-month period. All restricted stock agreements are conditioned upon continued employment. Termination of employment prior to a vesting date, as described below, would terminate any interest in non-vested shares. Prior to vesting of the shares, as long as employed by the Company, the key employees and non-employee directors will have the right to vote such shares and to receive dividends paid with respect to such shares. All restricted shares will fully vest in the event of change in control of the Company or upon the death of the recipient. Nonvested restricted stock for the three months ended March 31, 2018 is summarized in the following table. All information has been retroactively adjusted for stock dividends and stock splits. Weighted- Average Grant-Date Restricted Stock Shares Fair Value Nonvested at January 1, 2018 142,692 $ 59.66 Granted 1,169 88.04 Vested (16,442) 63.90 Nonvested at March 31, 2018 127,419 59.37 As of March 31, 2018, there was $3.9 million of total unrecognized compensation cost related to nonvested restricted stock granted under the plans. This cost is expected to be recognized over a weighted-average period of 2.09 years as of March 31, 2018. The total fair value of shares vested during the three months ended March 31, 2018 was $1.2 million. Restricted Stock Units The Company from time-to-time also grants performance and discretionary RSUs to key employees. These awards help align the interests of these employees with the interests of the shareholders of the Company by providing economic value directly related to the performance of the Company. Some performance RSU grants contain a three-year performance period while others contain a one-year performance period and a time vested requirement (generally four years from grant date). The Company communicates threshold, target, and maximum performance RSU awards and performance targets to the applicable key employees at the beginning of a performance period. Discretionary RSUs are based upon prior performance and typically cliff-vest over four years from the grant date. Dividends are not paid in respect to the awards during the performance or the vesting period. The value of the RSUs awarded is established as the fair market value of the stock at the time of the grant. The Company recognizes expenses on a straight-line basis typically over the performance and vesting periods based upon the probable performance target that will be met. For the three months ended March 31, 2018, the Company accrued for 86% of the RSUs granted, based on Management’s expectations of performance. Nonvested RSUs for the three months ended March 31, 2018 is summarized in the following table. Weighted- Average Grant-Date Restricted Stock Units Shares Fair Value Nonvested at January 1, 2018 140,036 $ 78.49 Granted 96,363 86.26 LTIP Adjustment (3,213) 89.40 Nonvested at March 31, 2018 233,186 81.55 As of March 31, 2018, there was $11.7 million of total unrecognized compensation cost related to nonvested RSUs granted under the plan. This cost is expected to be recognized over a weighted-average period of 2.29 years as of March 31, 2018. The total fair value of RSUs vested during the three months ended March 31, 2018 was $2.6 million. During the three months ended March 31, 2018, 38,365 vested restricted stock units were issued to the participants in the 2015 Long-Term Incentive Plan and 15,836 nonvested restricted stock units were issued to participants in the 2017 Management Incentive Plan.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2018
Commitments and Contingent Liabilities
Commitments and Contingent Liabilities	Note 12 — Commitments and Contingent Liabilities In the normal course of business, the Company makes various commitments and incurs certain contingent liabilities, which are not reflected in the accompanying financial statements. The commitments and contingent liabilities include guarantees, commitments to extend credit, and standby letters of credit. At March 31, 2018, commitments to extend credit and standby letters of credit totaled $3.0 billion. The Company does not anticipate any material losses as a result of these transactions. The Company has been named as defendant in various legal actions, arising from its normal business activities, in which damages in various amounts are claimed. The Company is also exposed to litigation risk related to the prior business activities of banks acquired through whole bank acquisitions as well as banks from which assets were acquired and liabilities assumed in FDIC-assisted transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability is not expected to have a material effect on the Company’s consolidated financial statements.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2018
Fair Value
Fair Value	Note 13 — Fair Value FASB ASC Topic 820, Fair Value Measurements and Disclosures , defines fair value, establishes a framework for measuring fair value under accounting principles generally accepted in the United States, and enhances disclosures about fair value measurements. FASB ASC Topic 820 clarifies that fair value should be based on the assumptions market participants would use when pricing an asset or liability and establishes a fair value hierarchy that prioritizes the information used to develop those assumptions. The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Available for sale securities, derivative contracts, and mortgage servicing rights (“MSRs”) are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as impaired loans, OREO, and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or write-downs of individual assets. FASB ASC Topic 820 establishes a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows: Level 1 Observable inputs such as quoted prices in active markets; Level 2 Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and Level 3 Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. The following is a description of valuation methodologies used for assets recorded at fair value. Investment Securities Securities available for sale are valued on a recurring basis at quoted market prices where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable securities. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange and The NASDAQ Stock Market, or U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities and debentures issued by government sponsored entities, municipal bonds and corporate debt securities. Securities held to maturity are valued at quoted market prices or dealer quotes similar to securities available for sale. The carrying value of FHLB stock approximates fair value based on the redemption provisions. Mortgage Loans Held for Sale Mortgage loans held for sale are carried at fair value. The fair values of mortgage loans held for sale are based on commitments on hand from investors within the secondary market for loans with similar characteristics. As such, the fair value adjustments for mortgage loans held for sale are recurring Level 2. Loans The Company does not record loans at fair value on a recurring basis. However, from time to time, a loan may be considered impaired and an ALLL may be established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment using estimated fair value methodologies. The fair value of impaired loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. At March 31, 2018, substantially all of the impaired loans were evaluated based on the fair value of the collateral because such loans were considered collateral dependent. Impaired loans, where an allowance is established based on the fair value of collateral; require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value, the Company considers the impaired loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, the Company considers the impaired loan as nonrecurring Level 3. Other Real Estate Owned Typically OREO, consisting of properties obtained through foreclosure or in satisfaction of loans, is reported at fair value, determined on the basis of current appraisals, comparable sales, and other estimates of value obtained principally from independent sources, adjusted for estimated selling costs (Level 2). However, OREO is considered Level 3 in the fair value hierarchy because management has qualitatively applied a discount due to the size, supply of inventory, and the incremental discounts applied to the appraisals. Management also considers other factors, including changes in absorption rates, length of time the property has been on the market and anticipated sales values, which have resulted in adjustments to the collateral value estimates indicated in certain appraisals. At the time of foreclosure, any excess of the loan balance over the fair value of the real estate held as collateral is treated as a charge against the ALLL. Gains or losses on sale and generally any subsequent adjustments to the value are recorded as a component of OREO expense. Derivative Financial Instruments Fair value is estimated using pricing models of derivatives with similar characteristics; accordingly, the derivatives are classified within Level 2 of the fair value hierarchy (see Note 15—Derivative Financial Instruments for additional information). Mortgage servicing rights The estimated fair value of MSRs is obtained through an independent derivatives dealer analysis of future cash flows. The evaluation utilizes assumptions market participants would use in determining fair value including market discount rates, prepayment speeds, servicing income, servicing costs, default rates and other market driven data, as well as the market’s perception of future interest rate movements. MSRs are classified as Level 3. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The tables below present the recorded amount of assets and liabilities measured at fair value on a recurring basis. Quoted Prices In Active Significant Markets Other Significant for Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) Fair Value (Level 1) (Level 2) (Level 3) March 31, 2018: Assets Derivative financial instruments $ 7,420 $ — $ 7,420 $ — Loans held for sale 42,690 — 42,690 — Securities available for sale: Government-sponsored entities debt 89,746 — 89,746 — State and municipal obligations 225,686 — 225,686 — Mortgage-backed securities 1,325,405 — 1,325,405 — Corporate securities — — — — Total securities available for sale 1,640,837 — 1,640,837 — Mortgage servicing rights 34,196 — — 34,196 $ 1,725,143 $ — $ 1,690,947 $ 34,196 Liabilities Derivative financial instruments $ 6,094 $ — $ 6,094 $ — December 31, 2017: Assets Derivative financial instruments $ 3,306 $ — $ 3,306 $ — Loans held for sale 70,890 — 70,890 — Securities available for sale: Government-sponsored entities debt 85,509 — 85,509 — State and municipal obligations 220,437 — 220,437 — Mortgage-backed securities 1,340,687 — 1,340,687 — Corporate securities 1,560 — 1,560 — Total securities available for sale 1,648,193 — 1,648,193 — Mortgage servicing rights 31,119 — — 31,119 $ 1,753,508 $ — $ 1,722,389 $ 31,119 Liabilities Derivative financial instruments $ 3,248 $ — $ 3,248 $ — March 31, 2017: Assets Derivative financial instruments $ 2,413 $ — $ 2,413 $ — Loans held for sale 46,988 — 46,988 — Securities available for sale: Government-sponsored entities debt 93,299 — 93,299 — State and municipal obligations 200,284 — 200,284 — Mortgage-backed securities 1,083,439 — 1,083,439 — Corporate securities 2,766 2,766 — — Total securities available for sale 1,379,788 2,766 1,377,022 — Mortgage servicing rights 30,063 — — 30,063 $ 1,459,252 $ 2,766 $ 1,426,423 $ 30,063 Liabilities Derivative financial instruments $ 934 $ — $ 934 $ — Changes in Level 1, 2 and 3 Fair Value Measurements When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, since Level 3 financial instruments typically include, in addition to the unobservable or Level 3 components, observable components (that is, components that are actively quoted and can be validated to external sources), the gains and losses below include changes in fair value due in part to observable factors that are part of the valuation methodology. There were no changes in hierarchy classifications of Level 3 assets or liabilities for the three months ended March 31, 2018. A reconciliation of the beginning and ending balances of Level 3 assets and liabilities recorded at fair value on a recurring basis for the three months ended March 31, 2018 and 2017 is as follows: (Dollars in thousands) Assets Liabilities Fair value, January 1, 2018 $ 31,119 $ — Servicing assets that resulted from transfers of financial assets 1,490 — Changes in fair value due to valuation inputs or assumptions 2,516 — Changes in fair value due to decay (929) — Fair value , March 31, 2018 $ 34,196 $ — Fair value, January 1, 2017 $ 29,037 $ — Servicing assets that resulted from transfers of financial assets 1,385 — Changes in fair value due to valuation inputs or assumptions 444 — Changes in fair value due to decay (803) — Fair value, March 31, 2017 $ 30,063 $ — There were no unrealized losses included in accumulated other comprehensive income related to Level 3 financial assets and liabilities at March 31, 2018 or 2017. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The tables below present the recorded amount of assets and liabilities measured at fair value on a nonrecurring basis: Quoted Prices In Active Significant Markets Other Significant for Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) Fair Value (Level 1) (Level 2) (Level 3) March 31, 2018: OREO $ 11,073 $ — $ — $ 11,073 Non-acquired impaired loans 2,118 — — 2,118 December 31, 2017: OREO $ 11,203 $ — $ — $ 11,203 Non-acquired impaired loans 10,495 — — 10,495 March 31, 2017: OREO $ 20,007 $ — $ — $ 20,007 Non-acquired impaired loans 2,290 — — 2,290 Quantitative Information about Level 3 Fair Value Measurement Weighted Average March 31, December 31, March 31, Valuation Technique Unobservable Input 2018 2017 2017 Nonrecurring measurements: Non-acquired impaired loans Discounted appraisals Collateral discounts 3 % 3 % 6 % OREO Discounted appraisals Collateral discounts and estimated costs to sell 28 % 21 % 20 % Fair Value of Financial Instruments The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those models are significantly affected by the assumptions used, including the discount rates and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The use of different methodologies may have a material effect on the estimated fair value amounts. The fair value estimates presented herein are based on pertinent information available to management as of March 31, 2018, December 31, 2017 and March 31, 2017. Such amounts have not been revalued for purposes of these consolidated financial statements since those dates and, therefore, current estimates of fair value may differ significantly from the amounts presented herein. The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: Cash and Cash Equivalents — The carrying amount is a reasonable estimate of fair value. Investment Securities — Securities held to maturity are valued at quoted market prices or dealer quotes. The carrying value of FHLB stock approximates fair value based on the redemption provisions. The carrying value of the Company’s investment in unconsolidated subsidiaries approximates fair value. See Note 5—Investment Securities for additional information, as well as page 40 regarding fair value. Loans held for sale — The fair values disclosed for loans held for sale are based on commitments from investors for loans with similar characteristics. Loans — ASU 2016-01 - Financial Instruments – Overall – Recognition and Measurement of Financial Assets and Financial Liabilities became effective for the Company on January 1, 2018. This accounting standard requires the company to calculate the fair value of our loans for disclosure purposes based on an estimated exit price. In previous periods we have valued using only discounted cash flows on fixed rate loans. Therefore, the fair value for loans for March 31, 2018 will be calculated using a different method than that used at December 31, 2017 and March 31, 2017. With ASU 2016-01, to estimate an exit price, all loans (fixed and variable) are being valued with a discounted cash flow analyses for loans that includes the Company’s estimate of future credit losses expected to be incurred over the life of the loans. Fair values for certain mortgage loans (e.g., one-to-four family residential) and other consumer loans are estimated using discounted cash flow analyses based on the Company’s current rates offered for new loans of the same type, structure and credit quality. Fair values for other loans (e.g., commercial real estate and investment property mortgage loans, commercial and industrial loans) are estimated using discounted cash flow analyses, using interest rates currently being offered by the Company for loans with similar terms to borrowers of similar credit quality. Fair values for non-performing loans are estimated using a discounted cash flow analyses. For previous periods, variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. Also, for all other loans where a discounted cash flow analyses was used, there was no estimate of future credit losses expected to be incurred over the life of the loans included in the valuation. Deposit Liabilities — The fair values disclosed for demand deposits (e.g., interest and non-interest bearing checking, passbook savings, and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts of variable-rate, fixed-term money market accounts, and certificates of deposit approximate their fair values at the reporting date. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. Federal Funds Purchased and Securities Sold Under Agreements to Repurchase — The carrying amount of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings maturing within ninety days approximate their fair values. Other Borrowings — The fair value of other borrowings is estimated using discounted cash flow analysis on the Company’s current incremental borrowing rates for similar types of instruments. Accrued Interest — The carrying amounts of accrued interest approximate fair value. Derivative Financial Instruments — The fair value of derivative financial instruments (including interest rate swaps) is estimated using pricing models of derivatives with similar characteristics. Commitments to Extend Credit, Standby Letters of Credit and Financial Guarantees — The fair values of commitments to extend credit are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair values of guarantees and letters of credit are based on fees currently charged for similar agreements or on the estimated costs to terminate them or otherwise settle the obligations with the counterparties at the reporting date. The estimated fair value, and related carrying amount, of the Company’s financial instruments are as follows: Carrying Fair (Dollars in thousands) Amount Value Level 1 Level 2 Level 3 March 31, 2018 Financial assets: Cash and cash equivalents $ 644,504 $ 644,504 $ 644,504 $ — $ — Investment securities 1,665,590 1,665,600 23,479 1,642,121 — Loans held for sale 42,690 42,690 — 42,690 — Loans, net of allowance for loan losses (1) 10,589,521 10,419,134 — — 10,419,134 Accrued interest receivable 31,175 31,175 — 6,661 24,514 Mortgage servicing rights 34,196 34,196 — — 34,196 Interest rate swap - non-designated hedge 5,755 5,755 — 5,755 — Other derivative financial instruments (mortgage banking related) 1,665 1,665 — 1,665 — Financial liabilities: Deposits 11,663,098 10,780,965 — 10,780,965 — Federal funds purchased and securities sold under agreements to repurchase 357,574 357,574 — 357,574 — Other borrowings 215,589 219,037 — 219,037 — Accrued interest payable 3,563 3,563 — 3,563 — Interest rate swap - non-designated hedge 5,932 5,932 — 5,932 — Interest rate swap - cash flow hedge 162 162 — 162 — Off balance sheet financial instruments: Commitments to extend credit — (48,841) — (48,841) — December 31, 2017 Financial assets: Cash and cash equivalents $ 377,627 $ 377,627 $ 377,627 $ — $ — Investment securities 1,673,769 1,673,796 20,530 1,653,266 — Loans held for sale 70,890 70,890 — 70,890 — Loans, net of allowance for loan losses (1) 10,575,417 10,724,264 — — 10,724,264 Accrued interest receivable 32,727 32,727 — 7,051 25,676 Mortgage servicing rights 31,119 31,119 — — 31,119 Interest rate swap - non-designated hedge 2,367 2,367 — 2,367 — Other derivative financial instruments (mortgage banking related) 939 939 — 939 — Financial liabilities: Deposits 11,532,766 10,796,380 — 10,796,380 — Federal funds purchased and securities sold under agreements to repurchase 286,857 286,857 — 286,857 — Other borrowings 216,385 219,421 — 219,421 — Accrued interest payable 2,789 2,789 — 2,789 — Interest rate swap - non-designated hedge 2,750 2,750 — 2,750 — Interest rate swap - cash flow hedge — — Other derivative financial instruments (mortgage banking related) 252 252 — 252 — Off balance sheet financial instruments: Commitments to extend credit — 41,319 — 41,319 — March 31, 2017 Financial assets: Cash and cash equivalents $ 663,126 $ 663,126 $ 663,126 $ — $ — Investment securities 1,400,609 1,400,731 16,267 1,384,464 — Loans held for sale 46,988 46,988 — 46,988 — Loans, net of allowance for loan losses (1) 7,868,840 7,936,291 — — 7,936,291 Accrued interest receivable 22,823 22,823 — 5,558 17,265 Mortgage servicing rights 30,063 30,063 — — 30,063 Interest rate swap - non-designated hedge — — Other derivative financial instruments (mortgage banking related) 2,280 2,280 — 2,280 — Financial liabilities: Deposits 9,033,438 8,462,144 — 8,462,144 — Federal funds purchased and securities sold under agreements to repurchase 352,431 352,431 — 352,431 — Other borrowings 107,988 109,470 — 109,470 — Accrued interest payable 1,452 1,452 — 1,452 — Interest rate swap - cash flow hedge — — Interest rate swap - non-designated hedge 426 426 — 426 — Other derivative financial instruments (mortgage banking related) 387 387 — 387 — Off balance sheet financial instruments: Commitments to extend credit — 16,756 — 16,756 — (1) - Loans, net of allowance for loan losses is being valued using a different method at March 31, 2018 from December 31, 2017 and March 31, 2017. See page 44 for explanation of change in method.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)	Note 14 — Accumulated Other Comprehensive Income (Loss) The changes in each components of accumulated other comprehensive income (loss), net of tax, were as follows: Unrealized Gains and Losses Gains and on Securities Losses on Benefit Available Cash Flow (Dollars in thousands) Plans for Sale Hedges Total Three Months Ended March 31, 2018 Balance at December 31, 2017 $ (5,998) $ (4,278) $ (151) $ (10,427) Other comprehensive income (loss) before reclassifications — (17,192) 28 (17,164) Amounts reclassified from accumulated other comprehensive income 151 — 37 188 Net comprehensive income (loss) 151 (17,192) 65 (16,976) AOCI reclassification to retained earnings from the adoption of ASU 2018-02 (1,760) (1,147) (40) (2,947) Balance at March 31, 2018 $ (7,607) $ (22,617) $ (126) $ (30,350) Three Months Ended March 31, 2017 Balance at December 31, 2016 $ (6,195) $ (1,708) $ (308) $ (8,211) Other comprehensive income (loss) before reclassifications — 3,166 (24) 3,142 Amounts reclassified from accumulated other comprehensive income 117 — 68 185 Net comprehensive income 117 3,166 44 3,327 Balance at March 31, 2017 $ (6,078) $ 1,458 $ (264) $ (4,884) The table below presents the reclassifications out of accumulated other comprehensive income (loss), net of tax: Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (Dollars in thousands) For the Three Months Ended March 31, Accumulated Other Comprehensive Income (Loss) Component 2018 2017 Income Statement Line Item Affected Losses on cash flow hedges: Interest rate contracts $ 47 $ 110 Interest expense (10) (42) Provision for income taxes 37 68 Net income Amortization of defined benefit pension: Actuarial losses $ 194 $ 188 Salaries and employee benefits (43) (71) Provision for income taxes 151 117 Net income Total reclassifications for the period $ 188 $ 185

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Financial Instruments
Derivative Financial Instruments	Note 15 — Derivative Financial Instruments The Company uses certain derivative instruments to meet the needs of its customers as well as to manage the interest rate risk associated with certain transactions. The following table summarizes the derivative financial instruments utilized by the Company: March 31, 2018 March 31, 2017 Balance Sheet Notional Estimated Fair Value Notional Estimated Fair Value (Dollars in thousands) Location Amount Gain Loss Amount Gain Loss Cash flow hedges of interest rate risk: Pay fixed rate swap with counterparty Other Liabilities $ 8,000 $ — $ 162 $ 8,000 $ — $ 426 Fair value hedge of interest rate risk: Pay fixed rate swap with counterparty Other Liabilities $ 2,824 $ — $ 21 $ — $ — $ — Not designated hedges of interest rate risk: Customer related interest rate contracts: Matched interest rate swaps with borrowers Other Assets and Other Liabilities $ 282,047 $ 146 $ 5,908 $ 13,768 $ 133 $ — Matched interest rate swaps with counterparty Other Assets and Other Liabilities $ 282,047 $ 5,609 $ 3 $ 13,768 $ — $ 121 Not designated hedges of interest rate risk - mortgage banking activities: Contracts used to hedge mortgage servicing rights Other Assets $ 69,000 $ 390 $ — $ 98,000 $ 214 $ — Forward sales commitments used to hedge mortgage pipeline Other Assets $ 98,860 $ 1,275 $ — $ 114,079 1,679 $ — Total derivatives $ 742,778 $ 7,420 $ 6,094 $ 247,615 $ 2,026 $ 547 Cash Flow Hedge of Interest Rate Risk The Company is exposed to interest rate risk in the course of its business operations and manages a portion of this risk through the use of derivative financial instruments, in the form of interest rate swaps. The Company accounts for its interest rate swap that is classified as a cash flow hedge in accordance with FASB ASC 815, Derivatives and Hedging , which requires that all derivatives be recognized as assets or liabilities on the balance sheet at fair value. For more information regarding the fair value of the Company’s derivative financial instruments, see Note 13 to these financial statements. The Company utilizes an interest rate swap agreement to essentially convert a portion of its variable-rate debt to a fixed rate (cash flow hedge). For derivatives designated as hedging exposure to variable cash flows of a forecasted transaction (cash flow hedge), the effective portion of the derivative’s gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings when the forecasted transaction affects earnings or when the hedge is terminated. The ineffective portion of the gain or loss is reported in earnings immediately. For derivatives that are not designated as hedging instruments, changes in the fair value of the derivatives are recognized in earnings immediately. When applying hedge accounting for derivatives, the Company establishes a method for assessing the effectiveness of the hedging derivative and a measurement approach for determining the ineffective aspect of the hedge upon the inception of the hedge. During 2009, the Company entered into a forward starting interest rate swap agreement with a notional amount of $8.0 million to manage interest rate risk due to periodic rate resets on its junior subordinated debt issued by SCBT Capital Trust II, an unconsolidated subsidiary of the Company established for the purpose of issuing trust preferred securities. The Company hedges the variable rate cash flows of subordinated debt against future interest rate increases by using an interest rate swap that effectively fixed the rate on the debt beginning on June 15, 2010, at which time the debt contractually converted from a fixed interest rate to a variable interest rate. This hedge expires on June 15, 2019. The notional amount on which the interest payments are based will not be exchanged. This derivatives contract calls for the Company to pay a fixed rate of 4.06% on $8.0 million notional amount and receive a variable rate of three-month LIBOR on the $8.0 million notional amount. The Company recognized an after-tax unrealized gain on its cash flow hedge in other comprehensive income of $65,000 and $44,000 for the three months ended March 31, 2018 and 2017, respectively. The Company recognized a $162,000 cash flow hedge liability in other liabilities on the balance sheet at March 31, 2018, compared to a $426,000 liability at March 31, 2017. There was no ineffectiveness in the cash flow hedge during the three months ended March 31, 2018 and 2017. Credit risk related to the derivative arises when amounts receivable from the counterparty (derivatives dealer) exceed those payable. The Company controls the risk of loss by only transacting with derivatives dealers that are national market makers whose credit ratings are strong. Each party to the interest rate swap is required to provide collateral in the form of cash or securities to the counterparty when the counterparty’s exposure to a mark-to-market replacement value exceeds certain negotiated limits. These limits are typically based on current credit ratings and vary with ratings changes. As of March 31, 2018 and 2017, the Company provided $300,000 and $550,000 of collateral, respectively, which is included in cash and cash equivalents on the balance sheet as interest-bearing deposits with banks. Also, the Company has a netting agreement with the counterparty. Balance Sheet Fair Value Hedge The Company maintains one loan swap, with an aggregate notional amount of $2.8 million at March 31, 2018, accounted for as fair value hedges in accordance with ASC 815, Derivatives and Hedgin g. This derivative protects the company from interest rate risk caused by changes in the LIBOR curve in relation to a certain designated fixed rate loan. The derivative converts the fixed rate loan to a floating rate. Settlement occurs in any given period where there is a difference in the stated fixed rate and variable rate. The fair value of this hedge is recorded in other assets and in other liabilities. All changes in fair value are recorded through earnings as noninterest income. There was no gain or loss recorded on this derivative for the three months ended March 31, 2018 or 2017. Non-designated Hedges of Interest Rate Risk Customer Swap The Company maintains interest rate swap contracts with customers that are classified as non-designated hedges and are not speculative in nature. These agreements are designed to convert customer’s variable rate loans with the Company to fixed rate. These interest rate swaps are executed with loan customers to facilitate a respective risk management strategy and allow the customer to pay a fixed rate of interest to the Company. These interest rate swaps are simultaneously hedged by executing offsetting interest rate swaps with unrelated market counterparties to minimize the net risk exposure to the Company resulting from the transactions and allow the Company to receive a variable rate of interest. The interest rate swaps pay and receive interest based on a floating rate based on one month LIBOR plus credit spread, with payments being calculated on the notional amount. The interest rate swaps are settled monthly with varying maturities. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. As of March 31, 2018, the interest rate swaps had an aggregate notional amount of approximately $564.1 million and the fair value of the interest rate swap derivatives are recorded in other assets at $5.7 million and in other liabilities at $5.9 million for a net liability position of $156,000, which was recorded through earnings. The fair value of the interest rate swap derivative with the derivatives dealer was in a net asset position of $12,000 at March 31, 2017. Mortgage Banking The Company also has derivatives contracts that are classified as non-designated hedges. These derivatives contracts are a part of the Company’s risk management strategy for its mortgage banking activities. These instruments may include financial forwards, futures contracts, and options written and purchased, which are used to hedge MSRs; while forward sales commitments are typically used to hedge the mortgage pipeline. Such instruments derive their cash flows, and therefore their values, by reference to an underlying instrument, index or referenced interest rate. The Company does not elect hedge accounting treatment for any of these derivative instruments and as a result, changes in fair value of the instruments (both gains and losses) are recorded in the Company’s consolidated statements of income in mortgage banking income. Mortgage Servicing Rights Derivatives contracts related to MSRs are used to help offset changes in fair value and are written in amounts referred to as notional amounts. Notional amounts provide a basis for calculating payments between counterparties but do not represent amounts to be exchanged between the parties, and are not a measure of financial risk. On March 31, 2018, the Company had derivative financial instruments outstanding with notional amounts totaling $69.0 million related to MSRs, compared to $98.0 million on March 31, 2017. The estimated net fair value of the open contracts related to the MSRs was recorded as a gain of $390,000 at March 31, 2018, compared to a gain of $214,000 at March 31, 2017. Mortgage Pipeline The following table presents the Company’s notional value of forward sale commitments and the fair value of those obligations along with the fair value of the mortgage pipeline. (Dollars in thousands) March 31, 2018 December 31, 2017 March 31, 2017 Mortgage loan pipeline $ $ $ 117,666 Expected closures 88,250 Fair value of mortgage loan pipeline commitments 2,066 Forward sales commitments 114,079 Fair value of forward commitments (387)

Capital Ratios

Capital Ratios	3 Months Ended
	Mar. 31, 2018
Capital Ratios
Capital Ratios	Note 16 — Capital Ratios The Company is subject to regulations with respect to certain risk-based capital ratios. These risk-based capital ratios measure the relationship of capital to a combination of balance sheet and off-balance sheet risks. The values of both balance sheet and off-balance sheet items are adjusted based on the rules to reflect categorical credit risk. In addition to the risk-based capital ratios, the regulatory agencies have also established a leverage ratio for assessing capital adequacy. The leverage ratio is equal to Tier 1 capital divided by total consolidated on-balance sheet assets (minus amounts deducted from Tier 1 capital). The leverage ratio does not involve assigning risk weights to assets. In July 2013, the Federal Reserve announced its approval of a final rule to implement the regulatory capital reforms developed by the Basel Committee on Banking Supervision (“Basel III”), among other changes required by the Dodd-Frank Wall Street Reform and Consumer Protection Act. The new rules became effective January 1, 2015, subject to a phase-in period for certain aspects of the new rules. As applied to the Company and the Bank, the new rules include a new minimum ratio of common equity Tier 1 capital ("CET1") to risk-weighted assets of 4.5%. The new rules also raised the minimum required ratio of Tier 1 capital to risk-weighted assets from 4% to 6%. The minimum required leverage ratio under the new rules is 4%. The minimum required total capital to risk-weighted assets ratio remains at 8% under the new rules. In order to avoid restrictions on capital distributions and discretionary bonus payments to executives, under the new rules a covered banking organization is also required to maintain a “capital conservation buffer” in addition to its minimum risk-based capital requirements. This buffer is required to consist solely of common equity Tier 1, and the buffer applies to all three risk-based measurements (CET1, Tier 1 capital and total capital). The capital conservation buffer will be phased in incrementally over time, beginning January 1, 2016 and becoming fully effective on January 1, 2019, and will ultimately consist of an additional amount of Tier 1 common equity equal to 2.5% of risk-weighted assets. The Bank is also subject to the regulatory framework for prompt corrective action, which identifies five capital categories for insured depository institutions (well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized) and is based on specified thresholds for each of the three risk-based regulatory capital ratios (CET1, Tier 1 capital and total capital) and for the leverage ratio. The following table presents actual and required capital ratios as of March 31, 2018, December 31, 2017 and March 31, 2017 for the Company and the Bank under the Basel III capital rules. The minimum required capital amounts presented include the minimum required capital levels as of March 31, 2018 based on the phase-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Minimum Capital Minimum Capital Required to be Required - Basel III Required - Basel III Considered Well Actual Phase-In Schedule Fully Phased In Capitalized (Dollars in thousands) Amount Ratio Capital Amount Ratio Capital Amount Ratio Capital Amount Ratio March 31, 2018 Common equity Tier 1 to risk-weighted assets: Consolidated $ 1,295,729 11.85 % $ 697,237 6.38 % $ 765,594 7.00 % $ 710,909 6.50 % South State Bank (the Bank) 1,385,289 12.67 % 697,253 6.38 % 765,612 7.00 % 710,925 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,406,832 12.86 % 861,293 7.88 % 929,650 8.50 % 874,964 8.00 % South State Bank (the Bank) 1,385,289 12.67 % 861,313 7.88 % 929,671 8.50 % 874,985 8.00 % Total capital to risk-weighted assets: Consolidated 1,456,453 13.32 % 1,080,034 9.88 % 1,148,391 10.50 % 1,093,706 10.00 % South State Bank (the Bank) 1,434,911 13.12 % 1,080,059 9.88 % 1,148,417 10.50 % 1,093,731 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,406,832 10.50 % 535,724 4.00 % 535,724 4.00 % 669,654 5.00 % South State Bank (the Bank) 1,385,289 10.35 % 535,522 4.00 % 535,522 4.00 % 669,402 5.00 % December 31, 2017: Common equity Tier 1 to risk-weighted assets: Consolidated $ 1,273,547 11.59 % $ 631,811 5.75 % $ 769,162 7.00 % $ 714,221 6.50 % South State Bank (the Bank) 1,360,603 12.38 % 631,741 5.75 % 769,077 7.00 % 714,143 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,384,433 12.60 % 796,632 7.25 % 933,982 8.50 % 879,042 8.00 % South State Bank (the Bank) 1,360,603 12.38 % 796,544 7.25 % 933,879 8.50 % 878,945 8.00 % Total capital to risk-weighted assets: Consolidated 1,432,843 13.04 % 1,016,392 9.25 % 1,153,742 10.50 % 1,098,802 10.00 % South State Bank (the Bank) 1,409,014 12.82 % 1,016,280 9.25 % 1,153,615 10.50 % 1,098,681 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,384,433 10.36 % 534,460 4.00 % 534,460 4.00 % 668,075 5.00 % South State Bank (the Bank) 1,360,603 10.18 % 534,390 4.00 % 534,390 4.00 % 667,987 5.00 % March 31, 2017: Common equity Tier 1 to risk-weighted assets: Consolidated $ 959,802 11.90 % $ 463,854 5.75 % $ 564,691 7.00 % $ 524,356 6.50 % South State Bank (the Bank) 998,061 12.37 % 463,767 5.75 % 564,586 7.00 % 524,259 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,030,559 12.77 % 584,859 7.25 % 685,697 8.50 % 645,362 8.00 % South State Bank (the Bank) 998,061 12.37 % 584,750 7.25 % 685,569 8.50 % 645,241 8.00 % Total capital to risk-weighted assets: Consolidated 1,074,107 13.31 % 746,199 9.25 % 847,037 10.50 % 806,702 10.00 % South State Bank (the Bank) 1,041,277 12.91 % 746,060 9.25 % 846,879 10.50 % 806,552 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,030,559 10.05 % 410,054 4.00 % 410,054 4.00 % 512,567 5.00 % South State Bank (the Bank) 998,061 9.75 % 409,567 4.00 % 409,567 4.00 % 511,959 5.00 % As of March 31, 2018, December 31, 2017, and March 31, 2017, the capital ratios of the Company and the Bank were well in excess of the minimum regulatory requirements and exceeded the thresholds for the “well capitalized” regulatory classification.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2018
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets	Note 17—Goodwill and Other Intangible Assets The carrying amount of goodwill was $1.0 billion at March 31, 2018. The Company added $258.3 million in goodwill related to the SBFC merger during the first quarter of 2017 and $403.0 million related to the PSC merger during the fourth quarter of 2017. The Company’s other intangible assets, consisting of core deposit intangibles, noncompete intangibles, and client list intangibles are included on the face of the balance sheet. The Company added $18.1 million and $26.2 million in core deposit intangibles related to the SBFC and PSC mergers, respectively. The following is a summary of gross carrying amounts and accumulated amortization of other intangible assets: March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Gross carrying amount $ 126,449 $ 126,449 $ 100,274 Accumulated amortization (56,073) (52,660) (44,813) $ 70,376 $ 73,789 $ 55,461 Amortization expense totaled $3.4 million and $2.5 million for the three months ended March 31, 2018 and 2017, respectively. Other intangibles are amortized using either the straight-line method or an accelerated basis over their estimated useful lives, with lives generally between two and 15 years. Estimated amortization expense for other intangibles for each of the next five quarters is as follows: (Dollars in thousands) Quarter ending: June 30, 2018 $ 3,401 September 30, 2018 3,400 December 31, 2018 3,400 March 31, 2019 3,156 June 30, 2019 3,144 Thereafter 53,875 $ 70,376

Loan Servicing, Mortgage Origin

Loan Servicing, Mortgage Origination, and Loans Held for Sale	3 Months Ended
	Mar. 31, 2018
Loan Servicing, Mortgage Origination, and Loans Held for Sale
Loan Servicing, Mortgage Origination, and Loans Held for Sale	Note 18 — Loan Servicing, Mortgage Origination, and Loans Held for Sale As of March 31, 2018, December 31, 2017, and March 31, 2017, the portfolio of residential mortgages serviced for others, which is not included in the accompanying balance sheets, was $3.0 billion, $2.9 billion, and $2.8 billion, respectively. Servicing loans for others generally consists of collecting mortgage payments, maintaining escrow accounts and disbursing payments to investors. The amount of contractually specified servicing fees earned by the Company during the three months ended March 31, 2018 and March 31, 2017 was $1.9 million and $1.8 million, respectively. Servicing fees are recorded in mortgage banking income in the Company’s consolidated statements of income. At March 31, 2018, December 31, 2017, and March 31, 2017, MSRs were $34.2 million, $31.1 million, and $30.1 million on the Company’s consolidated balance sheets, respectively. MSRs are recorded at fair value with changes in fair value recorded as a component of mortgage banking income in the consolidated statements of income. The market value adjustments related to MSRs recorded in mortgage banking income for the three months ended March 31, 2018 and March 31, 2017 were gains of $2.5 million and $444,000, respectively. The Company has used various free standing derivative instruments to mitigate the income statement effect of changes in fair value due to changes in market value adjustments and to changes in valuation inputs and assumptions related to MSRs. See Note 13 — Fair Value for the changes in fair value of MSRs. The following table presents the changes in the fair value of the offsetting hedge. Three Months Ended (Dollars in thousands) March 31, 2018 March 31, 2017 Increase in fair value of MSRs $ $ 444 Decay of MSRs (803) Gain (loss) related to derivatives 266 Net effect on statements of income $ $ (93) The fair value of MSRs is highly sensitive to changes in assumptions and fair value is determined by estimating the present value of the asset’s future cash flows utilizing market-based prepayment rates, discount rates and other assumptions validated through comparison to trade information, industry surveys and with the use of independent third party appraisals. Changes in prepayment speed assumptions have the most significant impact on the fair value of MSRs. Generally, as interest rates increase, mortgage loan prepayments decelerate due to decreased refinance activity, which results in a increase in the fair value of the MSRs. Measurement of fair value is limited to the conditions existing and the assumptions utilized as of a particular point in time, and those assumptions may not be appropriate if they are applied at a different time. See Note 13 — Fair Value for additional information regarding fair value. The characteristics and sensitivity analysis of the MSRs are included in the following table. March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Composition of residential loans serviced for others Fixed-rate mortgage loans 99.7 % 99.7 % 99.6 % Adjustable-rate mortgage loans 0.3 % 0.3 % 0.4 % Total 100.0 % 100.0 % 100.0 % Weighted average life years years 7.68 years Constant Prepayment rate (CPR) 6.3 % 7.7 % 7.8 % Weighted average discount rate 9.6 % 9.6 % 9.8 % Effect on fair value due to change in interest rates 25 basis point increase $ 1,025 $ 1,485 $ 1,375 50 basis point increase 1,791 2,664 2,431 25 basis point decrease (1,439) (1,850) (1,746) 50 basis point decrease (3,189) (4,014) (3,774) The sensitivity calculations in the previous table are hypothetical and should not be considered to be predictive of future performance. Changes in fair value based on adverse changes in assumptions generally cannot be extrapolated because the relationship of the changes in assumptions to fair value may not be linear. Also, the effects of an adverse variation in a particular assumption on the fair value of the MSRs is calculated without changing any other assumptions, while in reality, changes in one factor may result in changing another, which may magnify or contract the effect of the change. Custodial escrow balances maintained in connection with the loan servicing were $20.9 million and $18.2 million at March 31, 2018 and March 31, 2017, respectively. Whole loan sales were $154.9 million and $177.7 million for the three months ended March 31, 2018 and March 31, 2017, respectively. For the three months ended March 31, 2018 and March 31, 2017, $118.4 million and $120.6 million, or 76.5% and 67.9%, respectively, were sold with the servicing rights retained by the company. Loans held for sale have historically been comprised of residential mortgage loans awaiting sale in the secondary market, which generally settle in 15 to 45 days. Loans held for sale were $42.7 million $70.9 million and $47.0 million at March 31, 2018, December 31, 2017 and March 31, 2017, respectively. At December 31, 2017, loans held for sale included $25.4 million in commercial loans (Shared National Credits) which were acquired in the Park Sterling acquisition that were sold in the first quarter of 2018, resulting no material gains or losses. Loans held for sale, consisting of residential mortgage loans to be sold in the secondary market, were $42.7 million, $45.5 million, and $47.0 million at March 31, 2018, December 31, 2017, and March 31, 2017, respectively.

Investments in Qualified Afford

Investments in Qualified Affordable Housing Projects	3 Months Ended
	Mar. 31, 2018
Investment In Qualified Affordable Housing Projects.
Investment in Qualified Affordable Housing Projects	Note 19 – Investments in Qualified Affordable Housing Projects The Company has investments in qualified affordable housing projects (“QAHPs”) that provide low income housing tax credits and operating loss benefits over an extended period. The tax credits and the operating loss tax benefits that are generated by each of the properties are expected to exceed the total value of the investment made by the Company. For the three months ended March 31, 2018, tax credits and other tax benefits of $1.2 million and amortization of $1.0 million were recorded. For the three months ended March 31, 2017, the Company recorded tax credits and other tax benefits of $771,000 thousand and amortization of $587,000 million. At March 31, 2018 and 2017, the Company’s carrying value of QAHPs was $38.7 million and $26.2 million, respectively, with an original investment of $49.7 million. The Company has $17.9 million and $9.4 million in remaining funding obligations related to these QAHPs recorded in liabilities at March 31, 2018 and 2017, respectively. None of the original investment will be repaid. The investment in QAHPs is being accounted for using the equity method.

Repurchase Agreements

Repurchase Agreements	3 Months Ended
	Mar. 31, 2018
Repurchase Agreements
Repurchase Agreements	Note 20 – Repurchase Agreements Securities sold under agreements to repurchase ("repurchase agreements") represent funds received from customers, generally on an overnight or continuous basis, which are collateralized by investment securities owned or, at times, borrowed and re-hypothecated by the Company. Repurchase agreements are subject to terms and conditions of the master repurchase agreements between the Company and the client and are accounted for as secured borrowings. Repurchase agreements are included in federal funds purchased and securities sold under agreements to repurchase on the condensed consolidated balance sheets. At March 31, 2018, December 31, 2017 and March 31, 2017 the Company's repurchase agreements totaled $269.5 million, $211.1 million, and $272.4 million, respectively. All of the Company’s repurchase agreements were overnight or continuous (until-further-notice) agreements at March 31, 2018, December 31, 2017 and March 31, 2017. These borrowings were collateralized with government, government-sponsored enterprise, or state and political subdivision-issued securities with a carrying value of $269.5 million, $211.1 million and $272.4 million at March 31, 2018, December 31, 2017 and March 31, 2017, respectively. Declines in the value of the collateral would require the Company to increase the amounts of securities pledged.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2018
Subsequent Events
Subsequent Events	Note 21 – Subsequent Events The Company has evaluated subsequent events for accounting and disclosure purposes through the date the financial statements are issued.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Summary of Significant Accounting Policies
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2018
Mergers and Acquisitions
Schedule of proforma information	Estimated/Actual For PSC Pro Forma For the Three Months Three Months (Dollars in thousands) Ended March 31, 2018 Ended March 31, 2017 Total revenues (net interest income plus noninterest income) $ 36,085 $ 167,044 Net adjusted income available to the common shareholder $ 11,072 $ 49,233
Park Sterling Corporation
Mergers and Acquisitions
Schedule of assets acquired, liabilities assumed, and fair value of total consideration transferred	The PSC transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date. The following table presents the assets acquired and liabilities assumed as of November 30, 2017 and their initial and subsequent fair value estimates, as recorded by the Company. Fair values are preliminary and subject to refinement for up to a year after the closing date of the acquisition. Initial Subsequent As Recorded Fair Value Fair Value As Recorded by (Dollars in thousands) by Park Adjustments Adjustments the Company Assets Cash and cash equivalents $ 116,454 $ — $ — $ 116,454 Investment securities 461,261 1,444 (a) 219 (a) 462,924 Loans held for sale 2,200 68,686 (b) — 70,886 Loans, net of allowance and mark 2,346,612 (95,878) (c) (50) (c) 2,250,684 Premises and equipment 61,059 (4,882) (d) (387) (d) 55,790 Intangible assets 73,090 (46,915) (e) — 26,175 OREO and repossessed assets 2,549 (429) (f) 210 (f) 2,330 Bank owned life insurance 72,703 — — 72,703 Deferred tax asset 17,963 11,596 (g) 3 (g) 29,562 Other assets 21,595 (476) (h) — 21,119 Total assets $ 3,175,486 $ (66,854) $ (5) $ 3,108,627 Liabilities Deposits: Noninterest-bearing $ 561,874 $ — $ — $ 561,874 Interest-bearing 1,886,810 2,692 (i) — 1,889,502 Total deposits 2,448,684 2,692 — 2,451,376 Federal funds purchased and securities sold under agreements to repurchase — — — — Other borrowings 329,249 11,689 (j) — 340,938 Other liabilities 24,179 2,131 (k) — 26,310 Total liabilities 2,802,112 16,512 — 2,818,624 Net identifiable assets acquired over (under) liabilities assumed 373,374 (83,366) (5) 290,003 Goodwill — 402,951 5 402,956 Net assets acquired over liabilities assumed $ 373,374 $ 319,585 $ — $ 692,959 Consideration: South State Corporation common shares issued 7,480,343 Purchase price per share of the Company's common stock $ 92.05 Company common stock issued ($688,566) and cash exchanged for fractional shares ($88) $ 688,654 Cash paid for stock option redemptions 4,305 Fair value of total consideration transferred $ 692,959 Explanation of fair value adjustments (a)—Adjustment reflects marking the securities portfolio to fair value as of the acquisition date. (b)—Adjustment reflects a reclass of $68.7 million by SSB of Shared National Credits (loans) from loans held for investment to loans held for sale. (c)—Adjustment reflects the fair value adjustments (discount) of $60.9 million based on the Company’s evaluation of the acquired loan portfolio. This amount excludes the allowance for loan losses (“ALLL”) and fair value adjustment (discount) of $12.5 million and $21.3 million, respectively, recorded by PSC and is net of the $68.7 million reclass related to the Shared National Credits noted in (b). (d)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of the acquired premises and equipment. (e)—Adjustment reflects the recording of a 1.66% Core Deposit Intangible (“CDI”) on the acquired deposit accounts that totaled $26.2 million offset by a write-off of $73.1 million of existing goodwill and CDI acquired from PSC. (f)—Adjustment reflects the fair value adjustments to other real estate owned (“OREO”) based on the Company’s evaluation of the acquired OREO portfolio. (g)—Adjustment to record deferred tax asset related to the fair value adjustments and an adjustment from the PSC tax rate to the SSB tax rate. (h)—Adjustment reflects the write-off of accrued interest receivable and along with certain prepaid expenses. (i)—Adjustment reflects the premium for fixed maturity time deposits of $2.95 million offset by the write-off of existing fair value marks of $253,000 acquired from PSC. (j)—Adjustment reflects the fair value adjustment (discount) of $2.4 million on PSC’s Trust Preferred Securities offset by the write-off of the existing PSC discount on its senior debt and TRUPs of $14.0 million. (k)—Adjustment reflects the fair value adjustments to employee benefit plans of $1.5 million along with other adjustments of miscellaneous liabilities.
Southeastern Bank Financial
Mergers and Acquisitions
Schedule of assets acquired, liabilities assumed, and fair value of total consideration transferred	The following table presents the assets acquired and liabilities assumed as of January 3, 2017 and their initial and subsequent fair value estimates, as recorded by the Company. The Company has up to one year after the acquisition date to make subsequent fair value adjustments. Initial Subsequent As Recorded Fair Value Fair Value As Recorded by (Dollars in thousands) by SBFC Adjustments Adjustments the Company Assets Cash and cash equivalents $ 72,043 $ — $ — $ 72,043 Investment securities 591,824 (1,770) (a) — 590,054 Loans held for sale 13,652 — — 13,652 Loans, net of allowance and mark 1,060,618 (10,668) (b) — 1,049,950 Premises and equipment 25,419 (2,212) (c) 870 (c) 24,077 Intangible assets 140 17,980 (d) — 18,120 OREO and repossessed assets 580 (30) (e) (100) (e) 450 Bank owned life insurance 44,513 — — 44,513 Deferred tax asset 16,247 (687) (f) 515 (f) 16,075 Other assets 7,545 (482) (g) — 7,063 Total assets $ 1,832,581 $ 2,131 $ 1,285 $ 1,835,997 Liabilities Deposits: Noninterest-bearing $ 262,967 $ — $ — $ 262,967 Interest-bearing 1,257,953 — — 1,257,953 Total deposits 1,520,920 — — 1,520,920 Federal funds purchased and securities sold under agreements to repurchase 1,014 — — 1,014 Other borrowings 110,620 (1,120) (h) — 109,500 Other liabilities 19,980 5,553 (i) 2,210 (i) 27,743 Total liabilities 1,652,534 4,433 2,210 1,659,177 Net identifiable assets acquired over (under) liabilities assumed 180,047 (2,302) (925) 176,820 Goodwill — 257,370 925 258,295 Net assets acquired over liabilities assumed $ 180,047 $ 255,068 $ — $ 435,115 Consideration: South State Corporation common shares issued 4,978,338 Purchase price per share of the Company's common stock $ 87.30 Company common stock issued ($434,609) and cash exchanged for fractional shares ($16) $ 434,625 Cash paid for stock option redemptions 490 Fair value of total consideration transferred $ 435,115 Explanation of fair value adjustments (a)—Adjustment reflects marking the securities portfolio to fair value as of the acquisition date. (b)—Adjustment reflects the fair value adjustments of $30.7 million based on the Company’s evaluation of the acquired loan portfolio and excludes the allowance for loan losses (“ALLL”) of $20.1 million recorded by SBFC. (c)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of the acquired premises and equipment. (d)—Adjustment reflects the recording of the core deposit intangible on the acquired deposit accounts that totaled $18.1 million. (e)—Adjustment reflects the fair value adjustments to other real estate owned (“OREO”) and repossessed assets based on the Company’s evaluation of the acquired OREO and repossessed assets portfolio. (f)—Adjustment to record deferred tax asset related to the fair value adjustments. (g)—Adjustment reflects uncollectible portion of accrued interest receivable and loan fees receivable along with the write-off of certain prepaid expenses. (h)—Adjustment reflects the fair value adjustments based on the Company’s evaluation of other borrowings of Trust Preferred Securities with a discount of $2.1 million, netted with premium on certain Federal Home Loan Bank (“FHLB “) advances of $1.0 million. (i)—Adjustment reflects the fair value adjustments to employee benefit plans of $8.3 million netted against an adjustment of other miscellaneous liabilities of $496,000.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Investment Securities
Schedule of amortized cost and fair value of investment securities held to maturity	Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: State and municipal obligations $ 1,274 $ 10 $ — $ 1,284 December 31, 2017: State and municipal obligations $ 2,529 $ 27 $ — $ 2,556 March 31, 2017: State and municipal obligations $ 6,095 $ 122 $ — $ 6,217
Schedule of amortized cost and fair value of investment securities available for sale	Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: Government-sponsored entities debt* $ 91,483 $ — $ (1,737) $ 89,746 State and municipal obligations 224,994 2,232 (1,540) 225,686 Mortgage-backed securities** 1,353,356 248 (28,199) 1,325,405 Corporate securities — — — — $ 1,669,833 $ 2,480 $ (31,476) $ 1,640,837 December 31, 2017: Government-sponsored entities debt* $ 86,535 $ 51 $ (1,077) $ 85,509 State and municipal obligations 216,812 3,749 (124) 220,437 Mortgage-backed securities** 1,350,200 2,103 (11,616) 1,340,687 Corporate securities 1,560 — — 1,560 $ 1,655,107 $ 5,903 $ (12,817) $ 1,648,193 March 31, 2017: Government-sponsored entities debt* $ 93,995 $ 25 $ (721) $ 93,299 State and municipal obligations 196,241 4,183 (140) 200,284 Mortgage-backed securities** 1,084,764 5,095 (6,420) 1,083,439 Corporate stocks 2,433 624 (291) 2,766 $ 1,377,433 $ 9,927 $ (7,572) $ 1,379,788 * - The Company’s government-sponsored entities holdings are comprised of debt securities offered by Federal Home Loan Mortgage Corporation (“FHLMC”) or Freddie Mac, Federal National Mortgage Association (“FNMA”) or Fannie Mae, FHLB, and Federal Farm Credit Banks (“FFCB”). ** - All of the mortgage-backed securities are issued by government-sponsored entities; there are no private-label holdings. Also, included in the Company’s mortgage-backed securities are debt securities offered by the Small Business Administration (“SBA”), which have the full faith and credit backing of the United States Government.
Schedule of amortized cost and fair value of other investment securities	Gross Gross Amortized Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value March 31, 2018: Federal Home Loan Bank stock $ 17,399 $ — $ — $ 17,399 Investment in unconsolidated subsidiaries 3,563 — — 3,563 Other nonmarketable investment securities 2,517 — — 2,517 $ 23,479 $ — $ — $ 23,479 December 31, 2017: Federal Home Loan Bank stock $ 16,967 $ — $ — $ 16,967 Investment in unconsolidated subsidiaries 3,563 — — 3,563 Other nonmarketable investment securities 2,517 — — 2,517 $ 23,047 $ — $ — $ 23,047 March 31, 2017: Federal Home Loan Bank stock $ 11,239 $ — $ — $ 11,239 Investment in unconsolidated subsidiaries 2,262 — — 2,262 Other nonmarketable investment securities 1,225 — — 1,225 $ 14,726 $ — $ — $ 14,726
Schedule of amortized cost and fair value of debt securities by contractual maturity	Securities Securities Held to Maturity Available for Sale Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ — $ — $ 1,173 $ 1,175 Due after one year through five years — — 122,525 121,675 Due after five years through ten years 1,274 1,284 374,833 369,402 Due after ten years — — 1,171,302 1,148,585 $ 1,274 $ 1,284 $ 1,669,833 $ 1,640,837
Schedule of securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position	Less Than Twelve Months Twelve Months or More Gross Gross Unrealized Fair Unrealized Fair (Dollars in thousands) Losses Value Losses Value March 31, 2018: Securities Available for Sale Government-sponsored entities debt $ 918 $ 34,712 $ 819 $ 55,034 State and municipal obligations 1,523 69,118 17 724 Mortgage-backed securities 17,030 938,924 11,169 304,731 Corporate securities — — — — $ 19,471 $ 1,042,754 $ 12,005 $ 360,489 December 31, 2017: Securities Available for Sale Government-sponsored entities debt $ 403 $ 27,442 $ 674 $ 52,324 State and municipal obligations 124 17,400 — — Mortgage-backed securities 4,493 610,051 7,123 322,258 Corporate securities — — — — $ 5,020 $ 654,893 $ 7,797 $ 374,582 March 31, 2017: Securities Available for Sale Government-sponsored entities debt $ 721 $ 87,609 $ — $ — State and municipal obligations 140 10,984 — — Mortgage-backed securities 6,349 601,953 71 1,940 Corporate stocks — — 291 1,451 $ 7,210 $ 700,546 $ 362 $ 3,391

Loans and Allowance for Loan 33

Loans and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2018
Loans and Allowance for Loan Losses
Schedule of changes in the carrying value	Three Months Ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 618,803 $ 602,546 Fair value of acquired loans — 55,850 Net reductions for payments, foreclosures, and accretion (22,072) (29,895) Change in the allowance for loan losses on acquired loans 543 (1,161) Balance at end of period, net of allowance for loan losses on acquired loans $ 597,274 $ 627,340
Schedule of changes in allowance for loan losses	Non-acquired Acquired Non-Credit Acquired Credit (Dollars in thousands) Loans Impaired Loans Impaired Loans Total Three Months Ended March 31, 2018: Balance at beginning of period $ 43,448 $ — $ 4,627 $ 48,075 Loans charged-off (1,169) (334) — (1,503) Recoveries of loans previously charged off (1) 802 165 — 967 Net charge-offs (367) (169) — (536) Provision for loan losses charged to operations 2,122 169 163 2,454 Reduction due to loan removals — — (706) (706) Balance at end of period $ 45,203 $ — $ 4,084 $ 49,287 Three Months Ended March 31, 2017: Balance at beginning of period $ 36,960 $ — $ 3,395 $ 40,355 Loans charged-off (1,297) (389) — (1,686) Recoveries of loans previously charged off (1) 669 63 — 732 Net charge-offs (628) (326) — (954) Provision for loan losses charged to operations 2,117 326 1,264 3,707 Reduction due to loan removals — — (103) (103) Balance at end of period $ 38,449 $ — $ 4,556 $ 43,005 (1) – Recoveries related to acquired credit impaired loans are recorded through other noninterest income on the consolidated statement of income and do not run through the ALLL.
Summary of information pertaining to impaired loans	Unpaid Recorded Gross Contractual Investment Recorded Total Principal With No Investment Recorded Related (Dollars in thousands) Balance Allowance With Allowance Investment Allowance March 31, 2018 Commercial real estate: Construction and land development $ 50,399 $ 476 $ 45,722 $ 46,198 $ 767 Commercial non-owner occupied 2,916 659 522 1,181 110 Commercial owner occupied 8,972 3,273 2,305 5,578 63 Consumer real estate: Consumer owner occupied 7,245 4,332 1,161 5,493 35 Home equity loans 3,855 1,105 2,063 3,168 73 Commercial and industrial 2,679 634 1,043 1,677 489 Other income producing property 3,793 112 2,974 3,086 166 Consumer 787 — 315 315 9 Total $ 80,646 $ 10,591 $ 56,105 $ 66,696 $ 1,712 December 31, 2017 Commercial real estate: Construction and land development $ 47,553 $ 649 $ 42,581 $ 43,230 $ 1,063 Commercial non-owner occupied 3,106 860 515 1,375 125 Commercial owner occupied 9,212 3,553 2,089 5,642 64 Consumer real estate: Consumer owner occupied 7,382 4,392 1,240 5,632 37 Home equity loans 3,602 896 2,115 3,011 135 Commercial and industrial 2,246 635 521 1,156 15 Other income producing property 3,893 — 3,138 3,138 178 Consumer 654 — 239 239 7 Total $ 77,648 $ 10,985 $ 52,438 $ 63,423 $ 1,624 March 31, 2017 Commercial real estate: Construction and land development $ 13,674 $ 1,344 $ 7,942 $ 9,286 $ 459 Commercial non-owner occupied 2,393 218 557 775 158 Commercial owner occupied 10,082 4,191 2,060 6,251 60 Consumer real estate: Consumer owner occupied 6,084 1,483 3,229 4,712 68 Home equity loans 2,962 252 2,180 2,432 297 Commercial and industrial 2,419 — 1,270 1,270 387 Other income producing property 3,153 97 2,311 2,408 224 Consumer 475 — 189 189 5 Total $ 41,242 $ 7,585 $ 19,738 $ 27,323 $ 1,658
Summary of average investment in impaired loans and interest income recognized on impaired loans	Three Months Ended March 31, 2018 2017 Average Average Investment in Interest Income Investment in Interest Income (Dollars in thousands) Impaired Loans Recognized Impaired Loans Recognized Commercial real estate: Construction and land development $ 44,714 $ 513 $ 6,160 $ 47 Commercial non-owner occupied 1,278 5 791 6 Commercial owner occupied 5,610 75 6,248 76 Consumer real estate: Consumer owner occupied 5,563 43 5,192 39 Home equity loans 3,090 29 2,053 20 Commercial and industrial 1,417 17 1,266 18 Other income producing property 3,112 46 2,390 35 Consumer 277 — 167 — Total Impaired Loans $ 65,061 $ 728 $ 24,267 $ 241
Southeastern Bank Financial
Loans and Allowance for Loan Losses
Schedule of contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting carrying values	January 3, 2017 Loans Impaired (Dollars in thousands) at Acquisition Contractual principal and interest $ 73,365 Non-accretable difference (12,912) Cash flows expected to be collected 60,453 Accretable difference (4,603) Carrying value $ 55,850
Park Sterling Corporation
Loans and Allowance for Loan Losses
Schedule of contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting carrying values	November 30, 2017 Loans Impaired (Dollars in thousands) at Acquisition Contractual principal and interest $ 92,600 Non-accretable difference (12,840) Cash flows expected to be collected 79,760 Accretable difference (8,829) Carrying value $ 70,931
Non-acquired loans
Loans and Allowance for Loan Losses
Summary of loans	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Non-acquired loans: Commercial non-owner occupied real estate: Construction and land development $ 871,141 $ 830,875 $ 646,544 Commercial non-owner occupied 1,050,924 1,008,893 803,998 Total commercial non-owner occupied real estate 1,922,065 1,839,768 1,450,542 Consumer real estate: Consumer owner occupied 1,612,501 1,530,260 1,252,650 Home equity loans 448,582 437,642 396,806 Total consumer real estate 2,061,083 1,967,902 1,649,456 Commercial owner occupied real estate 1,296,738 1,262,776 1,200,004 Commercial and industrial 872,363 815,187 725,974 Other income producing property 198,684 193,847 182,416 Consumer 390,784 378,985 340,292 Other loans 20,795 33,690 15,623 Total non-acquired loans 6,762,512 6,492,155 5,564,307 Less allowance for loan losses (45,203) (43,448) (38,449) Non-acquired loans, net $ 6,717,309 $ 6,448,707 $ 5,525,858
Schedule of changes in allowance for loan losses	Construction Commercial Commercial Consumer Other Income & Land Non-owner Owner Owner Home Commercial Producing Other (Dollars in thousands) Development Occupied Occupied Occupied Equity & Industrial Property Consumer Loans Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance, December 31, 2017 $ 5,921 $ 6,525 $ 8,128 $ 9,668 $ 3,250 $ 5,488 $ 1,375 $ 2,788 $ 305 $ 43,448 Charge-offs (35) — — (4) (66) (85) — (979) — (1,169) Recoveries 442 2 8 23 101 15 8 203 — 802 Provision (benefit) (481) 271 210 506 (48) 915 10 887 (148) 2,122 Balance, March 31, 2018 $ 5,847 $ 6,798 $ 8,346 $ 10,193 $ 3,237 $ 6,333 $ 1,393 $ 2,899 $ 157 $ 45,203 Loans individually evaluated for impairment $ 767 $ 110 $ 63 $ 35 $ 73 $ 489 $ 166 $ 9 $ — $ 1,712 Loans collectively evaluated for impairment $ 5,080 $ 6,688 $ 8,283 $ 10,158 $ 3,164 $ 5,844 $ 1,227 $ 2,890 $ 157 $ 43,491 Loans: Loans individually evaluated for impairment $ 46,198 $ 1,181 $ 5,578 $ 5,493 $ 3,168 $ 1,677 $ 3,086 $ 315 $ — $ 66,696 Loans collectively evaluated for impairment 824,943 1,049,743 1,291,160 1,607,008 445,414 870,686 195,598 390,469 20,795 6,695,816 Total non-acquired loans $ 871,141 $ 1,050,924 $ 1,296,738 $ 1,612,501 $ 448,582 $ 872,363 $ 198,684 $ 390,784 $ 20,795 $ 6,762,512 Three Months Ended March 31, 2017 Allowance for loan losses: Balance , December 31, 2016 $ 4,091 $ 4,980 $ 8,022 $ 7,820 $ 3,211 $ 4,842 $ 1,542 $ 2,350 $ 102 $ 36,960 Charge-offs (405) — — (123) (34) (22) — (713) — (1,297) Recoveries 154 41 7 49 74 90 43 211 — 669 Provision (benefit) 809 443 (135) 362 205 214 (240) 595 (136) 2,117 Balance, March 31, 2017 $ 4,649 $ 5,464 $ 7,894 $ 8,108 $ 3,456 $ 5,124 $ 1,345 $ 2,443 $ (34) $ 38,449 Loans individually evaluated for impairment $ 459 $ 158 $ 60 $ 68 $ 297 $ 387 $ 224 $ 5 $ — $ 1,658 Loans collectively evaluated for impairment $ 4,190 $ 5,306 $ 7,834 $ 8,040 $ 3,159 $ 4,737 $ 1,121 $ 2,438 $ (34) $ 36,791 Loans: Loans individually evaluated for impairment $ 9,286 $ 775 $ 6,251 $ 4,712 $ 2,432 $ 1,270 $ 2,408 $ 189 $ — $ 27,323 Loans collectively evaluated for impairment 637,258 803,223 1,193,753 1,247,938 394,374 724,704 180,008 340,103 15,623 5,536,984 Total non-acquired loans $ 646,544 $ 803,998 $ 1,200,004 $ 1,252,650 $ 396,806 $ 725,974 $ 182,416 $ 340,292 $ 15,623 $ 5,564,307
Schedule of credit risk profile by risk grade of loans	Total Non-acquired Loans March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Pass $ 6,645,048 $ 6,375,759 $ 5,432,278 Special mention 79,619 78,325 85,425 Substandard 37,845 38,071 46,604 Doubtful — — — $ 6,762,512 $ 6,492,155 $ 5,564,307
Aging analysis of past due loans, segregated by class of loans	30 - 59 Days 60 - 89 Days 90+ Days Total Total (Dollars in thousands) Past Due Past Due Past Due Past Due Current Loans March 31, 2018 Commercial real estate: Construction and land development $ 673 $ 4 $ 133 $ 810 $ 870,331 $ 871,141 Commercial non-owner occupied 89 20 707 816 1,050,108 1,050,924 Commercial owner occupied 573 1,218 1,702 3,493 1,293,245 1,296,738 Consumer real estate: Consumer owner occupied 1,274 601 1,598 3,473 1,609,028 1,612,501 Home equity loans 1,452 65 1,423 2,940 445,642 448,582 Commercial and industrial 983 476 899 2,358 870,005 872,363 Other income producing property 360 108 125 593 198,091 198,684 Consumer 134 160 496 790 389,994 390,784 Other loans — — — — 20,795 20,795 $ 5,538 $ 2,652 $ 7,083 $ 15,273 $ 6,747,239 $ 6,762,512 December 31, 2017 Commercial real estate: Construction and land development $ 391 $ 63 $ 401 $ 855 $ 830,020 $ 830,875 Commercial non-owner occupied 297 398 51 746 1,008,147 1,008,893 Commercial owner occupied 2,227 382 1,721 4,330 1,258,446 1,262,776 Consumer real estate: Consumer owner occupied 1,291 140 1,943 3,374 1,526,886 1,530,260 Home equity loans 1,209 372 1,684 3,265 434,377 437,642 Commercial and industrial 477 57 915 1,449 813,738 815,187 Other income producing property 223 255 198 676 193,171 193,847 Consumer 525 196 623 1,344 377,641 378,985 Other loans — — — — 33,690 33,690 $ 6,640 $ 1,863 $ 7,536 $ 16,039 $ 6,476,116 $ 6,492,155 March 31, 2017 Commercial real estate: Construction and land development $ 345 $ 100 $ 471 $ 916 $ 645,628 $ 646,544 Commercial non-owner occupied 759 664 304 1,727 802,271 803,998 Commercial owner occupied 1,811 1,988 1,375 5,174 1,194,830 1,200,004 Consumer real estate: Consumer owner occupied 1,076 31 993 2,100 1,250,550 1,252,650 Home equity loans 434 341 1,404 2,179 394,627 396,806 Commercial and industrial 366 159 174 699 725,275 725,974 Other income producing property 310 104 190 604 181,812 182,416 Consumer 273 114 527 914 339,378 340,292 Other loans — — — — 15,623 15,623 $ 5,374 $ 3,501 $ 5,438 $ 14,313 $ 5,549,994 $ 5,564,307
Non-acquired loans | Consumer
Loans and Allowance for Loan Losses
Schedule of credit risk profile by risk grade of loans	Consumer Owner Occupied Home Equity Consumer March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 1,584,427 $ 1,502,016 $ 1,225,556 $ 435,282 $ 424,369 $ 382,387 $ 389,386 $ 377,425 $ 338,473 Special mention 13,329 13,902 13,903 6,767 6,749 7,597 301 313 625 Substandard 14,745 14,342 13,191 6,533 6,524 6,822 1,097 1,247 1,194 Doubtful — — — — — — — — — $ 1,612,501 $ 1,530,260 $ 1,252,650 $ 448,582 $ 437,642 $ 396,806 $ 390,784 $ 378,985 $ 340,292 Other Consumer Total March 31, 2018 December 31, 2017 March 31, 2017 March 31, 2018 December 31, 2017 March 31, 2017 Pass $ 20,795 $ 33,690 $ 15,623 $ 2,429,890 $ 2,337,500 $ 1,962,039 Special mention — — — 20,397 20,964 22,125 Substandard — — — 22,375 22,113 21,207 Doubtful — — — — — — $ 20,795 $ 33,690 $ 15,623 $ 2,472,662 $ 2,380,577 $ 2,005,371
Non-acquired loans | Commercial
Loans and Allowance for Loan Losses
Schedule of credit risk profile by risk grade of loans	Construction & Development Commercial Non-owner Occupied Commercial Owner Occupied March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 857,307 $ 818,240 $ 633,953 $ 1,040,669 $ 999,049 $ 790,687 $ 1,267,759 $ 1,232,927 $ 1,167,531 Special mention 10,499 8,758 8,868 8,497 7,864 11,233 22,619 23,575 20,277 Substandard 3,335 3,877 3,723 1,758 1,980 2,078 6,360 6,274 12,196 Doubtful — — — — — — — — — $ 871,141 $ 830,875 $ 646,544 $ 1,050,924 $ 1,008,893 $ 803,998 $ 1,296,738 $ 1,262,776 $ 1,200,004 Commercial & Industrial Other Income Producing Property Commercial Total March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 857,567 $ 801,885 $ 703,747 $ 191,856 $ 186,158 $ 174,321 $ 4,215,158 $ 4,038,259 $ 3,470,239 Special mention 12,286 11,130 16,746 5,321 6,034 6,176 59,222 57,361 63,300 Substandard 2,510 2,172 5,481 1,507 1,655 1,919 15,470 15,958 25,397 Doubtful — — — — — — — — — $ 872,363 $ 815,187 $ 725,974 $ 198,684 $ 193,847 $ 182,416 $ 4,289,850 $ 4,111,578 $ 3,558,936
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Summary of loans	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 FASB ASC Topic 310-30 acquired loans: Commercial real estate 233,277 234,595 223,156 Commercial real estate—construction and development 46,219 49,649 57,343 Residential real estate 248,766 260,787 266,484 Consumer 48,801 51,453 58,688 Commercial and industrial 24,295 26,946 26,225 Total FASB ASC Topic 310-30 acquired loans 601,358 623,430 631,896 Less allowance for loan losses (4,084) (4,627) (4,556) FASB ASC Topic 310-30 acquired loans, net $ 597,274 $ 618,803 $ 627,340
Schedule of contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting carrying values	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Contractual principal and interest $ 765,057 $ 795,850 $ 812,892 Non-accretable difference (33,841) (39,324) (31,273) Cash flows expected to be collected 731,216 756,526 781,619 Accretable yield (129,858) (133,096) (149,723) Carrying value $ 601,358 $ 623,430 $ 631,896 Allowance for acquired loan losses $ (4,084) $ (4,627) $ (4,556)
Schedule of refined accretable yield balance	Three Months Ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 133,096 $ 155,379 Addition from the SBFC acquisition — 4,603 Accretion (12,366) (15,214) Reclass of nonaccretable difference due to improvement in expected cash flows 9,204 5,062 Other changes, net (76) (107) Balance at end of period $ 129,858 $ 149,723
Schedule of changes in allowance for loan losses	Commercial Real Estate- Commercial Construction and Residential Commercial (Dollars in thousands) Real Estate Development Real Estate Consumer and Industrial Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance, December 31, 2017 $ $ $ $ $ $ Provision (benefit) for loan losses (14) 88 900 163 Reduction due to loan removals (13) — Balance, March 31, 2018 $ 261 $ $ $ $ $ Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ 261 $ $ $ $ $ Loans:* Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment Total acquired credit impaired loans $ $ $ $ $ $ Three Months Ended March 31, 2017 Allowance for loan losses: Balance , December 31, 2016 $ 41 $ 139 $ 2,419 $ 558 $ 238 $ 3,395 Provision for loan losses 291 (3) 752 37 187 1,264 Reduction due to loan removals 2 (6) (63) (6) (30) (103) Balance, March 31, 2017 $ 334 $ 130 $ 3,108 $ 589 $ 395 $ 4,556 Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ 334 $ 130 $ 3,108 $ 589 $ 395 $ 4,556 Loans:* Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 223,156 57,343 266,484 58,688 26,225 631,896 Total acquired credit impaired loans $ 223,156 $ 57,343 $ 266,484 $ 58,688 $ 26,225 $ 631,896 *— The carrying value of acquired credit impaired loans includes a non accretable difference which is primarily associated with the assessment of credit quality of acquired loans.
Schedule of credit risk profile by risk grade of loans	Commercial Real Estate— Construction and Commercial Real Estate Development March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 Pass $ 171,585 $ 177,231 $ 170,623 $ 28,501 $ 29,620 $ 28,157 Special mention 24,550 28,708 24,412 4,654 5,132 15,117 Substandard 37,142 28,656 28,121 13,064 14,897 14,069 Doubtful — — — — — — $ 233,277 $ 234,595 $ 223,156 $ 46,219 $ 49,649 $ 57,343 Residential Real Estate Consumer Commercial & Industrial March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 129,952 $ 135,974 $ 142,847 $ 7,247 $ 8,001 $ 9,704 $ 17,163 $ 18,522 $ 16,869 Special mention 50,845 54,500 53,539 16,329 17,214 19,124 1,132 1,169 4,645 Substandard 67,969 70,313 70,098 25,225 26,238 29,860 6,000 7,255 4,711 Doubtful — — — — — — — — — $ 248,766 $ 260,787 $ 266,484 $ 48,801 $ 51,453 $ 58,688 $ 24,295 $ 26,946 $ 26,225 Total Acquired Credit Impaired Loans March 31, December 31, March 31, 2018 2017 2017 Pass $ 354,448 $ 369,348 $ 368,200 Special mention 97,510 106,723 116,837 Substandard 149,400 147,359 146,859 Doubtful — — — $ 601,358 $ 623,430 $ 631,896
Aging analysis of past due loans, segregated by class of loans	30 - 59 Days 60 - 89 Days 90+ Days Total Total (Dollars in thousands) Past Due Past Due Past Due Past Due Current Loans March 31, 2018 Commercial real estate $ 6,043 $ 5,293 $ 6,239 $ 17,575 $ 215,702 $ 233,277 Commercial real estate—construction and development 53 321 3,438 3,812 42,407 46,219 Residential real estate 4,497 3,063 8,598 16,158 232,608 248,766 Consumer 800 275 1,028 2,103 46,698 48,801 Commercial and industrial 55 — 820 875 23,420 24,295 $ 11,448 $ 8,952 $ 20,123 $ 40,523 $ 560,835 $ 601,358 December 31, 2017 Commercial real estate $ 2,519 $ 3,669 $ 2,825 $ 9,013 $ 225,582 $ 234,595 Commercial real estate—construction and development 811 427 3,761 4,999 44,650 49,649 Residential real estate 5,895 4,283 8,824 19,002 241,785 260,787 Consumer 989 452 889 2,330 49,123 51,453 Commercial and industrial 596 167 406 1,169 25,777 26,946 $ 10,810 $ 8,998 $ 16,705 $ 36,513 $ 586,917 $ 623,430 March 31, 2017 Commercial real estate 1,482 1,733 3,984 7,199 215,957 223,156 Commercial real estate—construction and development 877 17 4,305 5,199 52,144 57,343 Residential real estate 4,226 1,809 8,577 14,612 251,872 266,484 Consumer 759 224 1,104 2,087 56,601 58,688 Commercial and industrial 504 — 2,849 3,353 22,872 26,225 $ 7,848 $ 3,783 $ 20,819 $ 32,450 $ 599,446 $ 631,896
Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Summary of information pertaining to nonaccrual loans by class	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Commercial non-owner occupied real estate: Construction and land development $ 500 $ 251 $ 195 Commercial non-owner occupied 1,174 2,635 2,078 Total commercial non-owner occupied real estate 1,674 2,886 2,273 Consumer real estate: Consumer owner occupied 5,541 4,888 3,902 Home equity loans 2,593 269 11 Total consumer real estate 8,134 5,157 3,913 Commercial owner occupied real estate 1,647 1,144 2,905 Commercial and industrial 799 1,662 473 Other income producing property 170 764 1,316 Consumer 903 1,802 1,029 Restructured loans 782 925 1,049 Total loans on nonaccrual status $ 14,109 $ 14,340 $ 12,958
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Summary of loans	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 FASB ASC Topic 310-20 acquired loans: Commercial non-owner occupied real estate: Construction and land development $ 349,532 $ 403,357 $ 141,897 Commercial non-owner occupied 783,466 817,166 217,850 Total commercial non-owner occupied real estate 1,132,998 1,220,523 359,747 Consumer real estate: Consumer owner occupied 683,614 710,611 550,578 Home equity loans 295,721 320,591 186,411 Total consumer real estate 979,335 1,031,202 736,989 Commercial owner occupied real estate 498,541 521,818 238,612 Commercial and industrial 344,171 398,696 136,309 Other income producing property 186,091 196,669 92,044 Consumer 133,802 137,710 151,941 Other — 1,289 — Total FASB ASC Topic 310-20 acquired loans $ 3,274,938 $ 3,507,907 $ 1,715,642
Schedule of changes in allowance for loan losses	Construction Commercial Commercial Consumer Other Income & Land Non-owner Owner Owner Home Commercial Producing (Dollars in thousands) Development Occupied Occupied Occupied Equity & Industrial Property Consumer Other Total Three Months Ended March 31, 2018 Allowance for loan losses: Balance at beginning of period $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Charge-offs (1) — — (70) (82) (43) — (138) — (334) Recoveries 1 — — 57 51 53 — 3 — 165 Provision (benefit) — — — 13 31 (10) — 135 — 169 Balance, March 31, 2018 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 349,532 783,466 498,541 683,614 295,721 344,171 186,091 133,802 — 3,274,938 Total acquired non-credit impaired loans $ 349,532 $ 783,466 $ 498,541 $ 683,614 $ 295,721 $ 344,171 $ 186,091 $ 133,802 $ — $ 3,274,938 Three Months Ended March 31, 2017 Allowance for loan losses: Balance at beginning of period $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Charge-offs — — — (313) — (2) — (74) — (389) Recoveries 1 — — 39 9 1 1 12 — 63 Provision (benefit) (1) — — 274 (9) 1 (1) 62 — 326 Balance, March 31, 2017 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 141,897 217,850 238,612 550,578 186,411 136,309 92,044 151,941 — 1,715,642 Total acquired non-credit impaired loans $ 141,897 $ 217,850 $ 238,612 $ 550,578 $ 186,411 $ 136,309 $ 92,044 $ 151,941 $ — $ 1,715,642
Schedule of credit risk profile by risk grade of loans	Total Acquired Non-credit Impaired Loans March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Pass $ 3,207,265 $ 3,438,030 $ 1,680,567 Special mention 45,043 49,868 24,404 Substandard 22,630 20,009 10,671 Doubtful — — — $ 3,274,938 $ 3,507,907 $ 1,715,642
Aging analysis of past due loans, segregated by class of loans	30 - 59 Days 60 - 89 Days 90+ Days Total Total (Dollars in thousands) Past Due Past Due Past Due Past Due Current Loans March 31, 2018 Commercial real estate: Construction and land development $ 1,788 $ 115 $ 288 $ 2,191 $ 347,341 $ 349,532 Commercial non-owner occupied 242 — 134 376 783,090 783,466 Commercial owner occupied 1,142 — — 1,142 497,399 498,541 Consumer real estate: Consumer owner occupied 1,304 76 786 2,166 681,448 683,614 Home equity loans 1,881 833 2,125 4,839 290,882 295,721 Commercial and industrial 1,998 27 87 2,112 342,059 344,171 Other income producing property 101 69 195 365 185,726 186,091 Consumer 287 138 1,118 1,543 132,259 133,802 $ $ $ $ $ $ December 31, 2017 Commercial real estate: Construction and land development $ 675 $ 113 $ 101 $ 889 $ 402,468 $ 403,357 Commercial non-owner occupied 12 321 — 333 816,833 817,166 Commercial owner occupied 642 — 189 831 520,987 521,818 Consumer real estate: Consumer owner occupied 673 204 867 1,744 708,867 710,611 Home equity loans 3,639 609 1,704 5,952 314,639 320,591 Commercial and industrial 5,996 1,278 143 7,417 391,279 398,696 Other income producing property 327 — 250 577 196,092 196,669 Consumer 400 114 1,351 1,865 135,845 137,710 Other — — — — 1,289 1,289 $ 12,364 $ 2,639 $ 4,605 $ 19,608 $ 3,488,299 $ 3,507,907 March 31, 2017 Commercial real estate: Construction and land development $ 386 $ 32 $ 160 $ 578 $ 141,319 $ 141,897 Commercial non-owner occupied 26 — — 26 217,824 217,850 Commercial owner occupied 1,069 143 — 1,212 237,400 238,612 Consumer real estate: Consumer owner occupied 1,293 482 438 2,213 548,365 550,578 Home equity loans 823 318 1,133 2,274 184,137 186,411 Commercial and industrial 3,484 — — 3,484 132,825 136,309 Other income producing property 192 — 35 227 91,817 92,044 Consumer 168 74 528 770 151,171 151,941 $ 7,441 $ 1,049 $ 2,294 $ 10,784 $ 1,704,858 $ 1,715,642
Summary of information pertaining to nonaccrual loans by class	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Commercial non-owner occupied real estate: Construction and land development $ 426 $ 108 $ 229 Commercial non-owner occupied — — — Total commercial non-owner occupied real estate 426 108 229 Consumer real estate: Consumer owner occupied 1,427 2,156 1,453 Home equity loans 3,931 4,589 1,784 Total consumer real estate 5,358 6,745 3,237 Commercial owner occupied real estate 178 189 158 Commercial and industrial 138 133 — Other income producing property 325 316 83 Consumer 1,651 1,906 1,208 Total loans on nonaccrual status $ 8,076 $ 9,397 $ 4,915
Acquired non-credit impaired loans | Commercial
Loans and Allowance for Loan Losses
Schedule of credit risk profile by risk grade of loans	Commercial Non-owner Construction & Development Occupied Commercial Owner Occupied March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 345,635 $ 394,139 $ 139,748 $ 775,924 $ 809,241 $ 213,827 $ 490,089 $ 513,861 $ 233,397 Special mention 2,892 4,602 1,316 7,533 7,913 3,937 8,254 7,740 5,057 Substandard 1,005 4,616 833 9 12 86 198 217 158 Doubtful — — — — — — — — — $ 349,532 $ 403,357 $ 141,897 $ 783,466 $ 817,166 $ 217,850 $ 498,541 $ 521,818 $ 238,612 Other Income Producing Commercial & Industrial Property Commercial Total March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 327,409 $ 388,342 $ 132,474 $ 180,825 $ 191,229 $ 89,596 $ 2,119,882 $ 2,296,812 $ 809,042 Special mention 8,049 9,883 3,787 4,369 4,547 1,741 31,097 34,685 15,838 Substandard 8,713 471 48 897 893 707 10,822 6,209 1,832 Doubtful — — — — — — — — — $ 344,171 $ 398,696 $ 136,309 $ 186,091 $ 196,669 $ 92,044 $ 2,161,801 $ 2,337,706 $ 826,712
Acquired non-credit impaired loans | Consumer
Loans and Allowance for Loan Losses
Schedule of credit risk profile by risk grade of loans	Consumer Owner Occupied Home Equity Consumer March 31, December 31, March 31, March 31, December 31, March 31, March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 2018 2017 2017 2018 2017 2017 Pass $ 676,981 $ 703,557 $ 546,049 $ 279,487 $ 301,842 $ 176,678 $ 130,915 $ 134,530 $ 148,798 Special mention 4,484 4,165 2,623 8,942 10,477 4,700 520 541 1,243 Substandard 2,149 2,889 1,906 7,292 8,272 5,033 2,367 2,639 1,900 Doubtful — — — — — — — — — $ 683,614 $ 710,611 $ 550,578 $ 295,721 $ 320,591 $ 186,411 $ 133,802 $ 137,710 $ 151,941 Other Consumer Total March 31, December 31, March 31, March 31, December 31, March 31, 2018 2017 2017 2018 2017 2017 Pass $ — $ 1,289 $ — $ 1,087,383 $ 1,141,218 $ 871,525 Special mention — — — 13,946 15,183 8,566 Substandard — — — 11,808 13,800 8,839 Doubtful — — — — — — $ — $ 1,289 $ — $ 1,113,137 $ 1,170,201 $ 888,930

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2018
Other Real Estate Owned
Schedule of information pertaining to OREO	Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning balance $ 11,203 $ 18,316 Acquired in Southeastern Bank acquisition — 550 Acquired in Park Sterling Corp. acquisition 210 — Additions 2,895 4,284 Writedowns (777) (936) Sold (2,458) (2,207) Ending Balance $ 11,073 $ 20,007

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2018
Deposits
Schedule of total deposits	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Certificates of deposit $ 1,765,576 $ 1,738,384 $ 1,060,048 Interest-bearing demand deposits 5,308,154 5,300,108 3,981,920 Non-interest bearing demand deposits 3,120,818 3,047,432 2,599,111 Savings deposits 1,464,074 1,443,918 1,388,388 Other time deposits 4,476 2,924 3,971 Total deposits $ 11,663,098 $ 11,532,766 $ 9,033,438

Retirement Plans (Tables)

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Retirement Plans
Schedule of components of net periodic pension expense	Three Months Ended (Dollars in thousands) 2018 2017 Interest cost $ $ Service cost Expected return on plan assets Recognized net actuarial loss Net periodic pension benefit $ $

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share
Schedule of computation of basic and diluted earnings per share	Three Months Ended (Dollars and shares in thousands, except for per share amounts) 2018 2017 Basic earnings per common share: Net income $ 42,326 $ 18,264 Weighted-average basic common shares 36,646 28,892 Basic earnings per common share $ $ Diluted earnings per share: Net income $ 42,326 $ 18,264 Weighted-average basic common shares 36,646 28,892 Effect of dilutive securities 253 267 Weighted-average dilutive shares 36,899 29,159 Diluted earnings per common share $ 1.15 $ 0.63
Schedule of anti-dilutive securities excluded from computation of diluted earnings per common share	Three Months Ended March 31, (Dollars in thousands) 2018 2017 Number of shares Range of exercise prices $ to $ $ to $

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2018
Share-Based Compensation
Schedule of stock option activity	Weighted Weighted Average Aggregate Average Remaining Intrinsic Shares Price (Yrs.) (000's) Outstanding at January 1, 2018 218,689 $ 52.75 Granted 34,407 91.05 Exercised (2,240) 29.95 Forfeited (5,806) 91.35 Outstanding at March 31, 2018 245,050 57.42 5.78 $ 7,194 Exercisable at March 31, 2018 171,299 46.05 4.42 $ 6,767 Weighted-average fair value of options granted during the year $
Schedule of weighted-average assumptions used in valuing options	Three months ended March 31, Dividend yield % % Expected life years years Expected volatility % % Risk-free interest rate % %
Summary of nonvested restricted stock	Nonvested restricted stock for the three months ended March 31, 2018 is summarized in the following table. All information has been retroactively adjusted for stock dividends and stock splits. Weighted- Average Grant-Date Restricted Stock Shares Fair Value Nonvested at January 1, 2018 142,692 $ 59.66 Granted 1,169 88.04 Vested (16,442) 63.90 Nonvested at March 31, 2018 127,419 59.37
Summary of nonvested RSUs	Nonvested RSUs for the three months ended March 31, 2018 is summarized in the following table. Weighted- Average Grant-Date Restricted Stock Units Shares Fair Value Nonvested at January 1, 2018 140,036 $ 78.49 Granted 96,363 86.26 LTIP Adjustment (3,213) 89.40 Nonvested at March 31, 2018 233,186 81.55

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value
Schedule of recorded amount of assets and liabilities measured at fair value on a recurring basis	Quoted Prices In Active Significant Markets Other Significant for Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) Fair Value (Level 1) (Level 2) (Level 3) March 31, 2018: Assets Derivative financial instruments $ 7,420 $ — $ 7,420 $ — Loans held for sale 42,690 — 42,690 — Securities available for sale: Government-sponsored entities debt 89,746 — 89,746 — State and municipal obligations 225,686 — 225,686 — Mortgage-backed securities 1,325,405 — 1,325,405 — Corporate securities — — — — Total securities available for sale 1,640,837 — 1,640,837 — Mortgage servicing rights 34,196 — — 34,196 $ 1,725,143 $ — $ 1,690,947 $ 34,196 Liabilities Derivative financial instruments $ 6,094 $ — $ 6,094 $ — December 31, 2017: Assets Derivative financial instruments $ 3,306 $ — $ 3,306 $ — Loans held for sale 70,890 — 70,890 — Securities available for sale: Government-sponsored entities debt 85,509 — 85,509 — State and municipal obligations 220,437 — 220,437 — Mortgage-backed securities 1,340,687 — 1,340,687 — Corporate securities 1,560 — 1,560 — Total securities available for sale 1,648,193 — 1,648,193 — Mortgage servicing rights 31,119 — — 31,119 $ 1,753,508 $ — $ 1,722,389 $ 31,119 Liabilities Derivative financial instruments $ 3,248 $ — $ 3,248 $ — March 31, 2017: Assets Derivative financial instruments $ 2,413 $ — $ 2,413 $ — Loans held for sale 46,988 — 46,988 — Securities available for sale: Government-sponsored entities debt 93,299 — 93,299 — State and municipal obligations 200,284 — 200,284 — Mortgage-backed securities 1,083,439 — 1,083,439 — Corporate securities 2,766 2,766 — — Total securities available for sale 1,379,788 2,766 1,377,022 — Mortgage servicing rights 30,063 — — 30,063 $ 1,459,252 $ 2,766 $ 1,426,423 $ 30,063 Liabilities Derivative financial instruments $ 934 $ — $ 934 $ —
Schedule of reconciliation of the beginning and ending balances of Level 3 assets and liabilities recorded at fair value on a recurring basis	(Dollars in thousands) Assets Liabilities Fair value, January 1, 2018 $ 31,119 $ — Servicing assets that resulted from transfers of financial assets 1,490 — Changes in fair value due to valuation inputs or assumptions 2,516 — Changes in fair value due to decay (929) — Fair value , March 31, 2018 $ 34,196 $ — Fair value, January 1, 2017 $ 29,037 $ — Servicing assets that resulted from transfers of financial assets 1,385 — Changes in fair value due to valuation inputs or assumptions 444 — Changes in fair value due to decay (803) — Fair value, March 31, 2017 $ 30,063 $ —
Schedule of amounts of assets and liabilities measured at fair value on a nonrecurring basis	Quoted Prices In Active Significant Markets Other Significant for Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) Fair Value (Level 1) (Level 2) (Level 3) March 31, 2018: OREO $ 11,073 $ — $ — $ 11,073 Non-acquired impaired loans 2,118 — — 2,118 December 31, 2017: OREO $ 11,203 $ — $ — $ 11,203 Non-acquired impaired loans 10,495 — — 10,495 March 31, 2017: OREO $ 20,007 $ — $ — $ 20,007 Non-acquired impaired loans 2,290 — — 2,290
Quantitative Information about Level 3 Fair Value Measurements	Weighted Average March 31, December 31, March 31, Valuation Technique Unobservable Input 2018 2017 2017 Nonrecurring measurements: Non-acquired impaired loans Discounted appraisals Collateral discounts 3 % 3 % 6 % OREO Discounted appraisals Collateral discounts and estimated costs to sell 28 % 21 % 20 %
Schedule of estimated fair value, and related carrying amount, of the Company's financial instruments	Carrying Fair (Dollars in thousands) Amount Value Level 1 Level 2 Level 3 March 31, 2018 Financial assets: Cash and cash equivalents $ 644,504 $ 644,504 $ 644,504 $ — $ — Investment securities 1,665,590 1,665,600 23,479 1,642,121 — Loans held for sale 42,690 42,690 — 42,690 — Loans, net of allowance for loan losses (1) 10,589,521 10,419,134 — — 10,419,134 Accrued interest receivable 31,175 31,175 — 6,661 24,514 Mortgage servicing rights 34,196 34,196 — — 34,196 Interest rate swap - non-designated hedge 5,755 5,755 — 5,755 — Other derivative financial instruments (mortgage banking related) 1,665 1,665 — 1,665 — Financial liabilities: Deposits 11,663,098 10,780,965 — 10,780,965 — Federal funds purchased and securities sold under agreements to repurchase 357,574 357,574 — 357,574 — Other borrowings 215,589 219,037 — 219,037 — Accrued interest payable 3,563 3,563 — 3,563 — Interest rate swap - non-designated hedge 5,932 5,932 — 5,932 — Interest rate swap - cash flow hedge 162 162 — 162 — Off balance sheet financial instruments: Commitments to extend credit — (48,841) — (48,841) — December 31, 2017 Financial assets: Cash and cash equivalents $ 377,627 $ 377,627 $ 377,627 $ — $ — Investment securities 1,673,769 1,673,796 20,530 1,653,266 — Loans held for sale 70,890 70,890 — 70,890 — Loans, net of allowance for loan losses (1) 10,575,417 10,724,264 — — 10,724,264 Accrued interest receivable 32,727 32,727 — 7,051 25,676 Mortgage servicing rights 31,119 31,119 — — 31,119 Interest rate swap - non-designated hedge 2,367 2,367 — 2,367 — Other derivative financial instruments (mortgage banking related) 939 939 — 939 — Financial liabilities: Deposits 11,532,766 10,796,380 — 10,796,380 — Federal funds purchased and securities sold under agreements to repurchase 286,857 286,857 — 286,857 — Other borrowings 216,385 219,421 — 219,421 — Accrued interest payable 2,789 2,789 — 2,789 — Interest rate swap - non-designated hedge 2,750 2,750 — 2,750 — Interest rate swap - cash flow hedge — — Other derivative financial instruments (mortgage banking related) 252 252 — 252 — Off balance sheet financial instruments: Commitments to extend credit — 41,319 — 41,319 — March 31, 2017 Financial assets: Cash and cash equivalents $ 663,126 $ 663,126 $ 663,126 $ — $ — Investment securities 1,400,609 1,400,731 16,267 1,384,464 — Loans held for sale 46,988 46,988 — 46,988 — Loans, net of allowance for loan losses (1) 7,868,840 7,936,291 — — 7,936,291 Accrued interest receivable 22,823 22,823 — 5,558 17,265 Mortgage servicing rights 30,063 30,063 — — 30,063 Interest rate swap - non-designated hedge — — Other derivative financial instruments (mortgage banking related) 2,280 2,280 — 2,280 — Financial liabilities: Deposits 9,033,438 8,462,144 — 8,462,144 — Federal funds purchased and securities sold under agreements to repurchase 352,431 352,431 — 352,431 — Other borrowings 107,988 109,470 — 109,470 — Accrued interest payable 1,452 1,452 — 1,452 — Interest rate swap - cash flow hedge — — Interest rate swap - non-designated hedge 426 426 — 426 — Other derivative financial instruments (mortgage banking related) 387 387 — 387 — Off balance sheet financial instruments: Commitments to extend credit — 16,756 — 16,756 — (1) - Loans, net of allowance for loan losses is being valued using a different method at March 31, 2018 from December 31, 2017 and March 31, 2017. See page 44 for explanation of change in method.

Accumulated Other Comprehensi40

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss)
Schedule of components of accumulated other comprehensive income (loss)	Unrealized Gains and Losses Gains and on Securities Losses on Benefit Available Cash Flow (Dollars in thousands) Plans for Sale Hedges Total Three Months Ended March 31, 2018 Balance at December 31, 2017 $ (5,998) $ (4,278) $ (151) $ (10,427) Other comprehensive income (loss) before reclassifications — (17,192) 28 (17,164) Amounts reclassified from accumulated other comprehensive income 151 — 37 188 Net comprehensive income (loss) 151 (17,192) 65 (16,976) AOCI reclassification to retained earnings from the adoption of ASU 2018-02 (1,760) (1,147) (40) (2,947) Balance at March 31, 2018 $ (7,607) $ (22,617) $ (126) $ (30,350) Three Months Ended March 31, 2017 Balance at December 31, 2016 $ (6,195) $ (1,708) $ (308) $ (8,211) Other comprehensive income (loss) before reclassifications — 3,166 (24) 3,142 Amounts reclassified from accumulated other comprehensive income 117 — 68 185 Net comprehensive income 117 3,166 44 3,327 Balance at March 31, 2017 $ (6,078) $ 1,458 $ (264) $ (4,884)
Schedule of reclassifications out of accumulated other comprehensive income (loss), net of tax	Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (Dollars in thousands) For the Three Months Ended March 31, Accumulated Other Comprehensive Income (Loss) Component 2018 2017 Income Statement Line Item Affected Losses on cash flow hedges: Interest rate contracts $ 47 $ 110 Interest expense (10) (42) Provision for income taxes 37 68 Net income Amortization of defined benefit pension: Actuarial losses $ 194 $ 188 Salaries and employee benefits (43) (71) Provision for income taxes 151 117 Net income Total reclassifications for the period $ 188 $ 185

Derivative Financial Instrume41

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Financial Instruments
Derivative financial instruments summary	March 31, 2018 March 31, 2017 Balance Sheet Notional Estimated Fair Value Notional Estimated Fair Value (Dollars in thousands) Location Amount Gain Loss Amount Gain Loss Cash flow hedges of interest rate risk: Pay fixed rate swap with counterparty Other Liabilities $ 8,000 $ — $ 162 $ 8,000 $ — $ 426 Fair value hedge of interest rate risk: Pay fixed rate swap with counterparty Other Liabilities $ 2,824 $ — $ 21 $ — $ — $ — Not designated hedges of interest rate risk: Customer related interest rate contracts: Matched interest rate swaps with borrowers Other Assets and Other Liabilities $ 282,047 $ 146 $ 5,908 $ 13,768 $ 133 $ — Matched interest rate swaps with counterparty Other Assets and Other Liabilities $ 282,047 $ 5,609 $ 3 $ 13,768 $ — $ 121 Not designated hedges of interest rate risk - mortgage banking activities: Contracts used to hedge mortgage servicing rights Other Assets $ 69,000 $ 390 $ — $ 98,000 $ 214 $ — Forward sales commitments used to hedge mortgage pipeline Other Assets $ 98,860 $ 1,275 $ — $ 114,079 1,679 $ — Total derivatives $ 742,778 $ 7,420 $ 6,094 $ 247,615 $ 2,026 $ 547
Schedule of notional value of forward sale commitments and the fair value of those obligations along with the fair value of the mortgage pipeline	(Dollars in thousands) March 31, 2018 December 31, 2017 March 31, 2017 Mortgage loan pipeline $ $ $ 117,666 Expected closures 88,250 Fair value of mortgage loan pipeline commitments 2,066 Forward sales commitments 114,079 Fair value of forward commitments (387)

Capital Ratios (Tables)

Capital Ratios (Tables)	3 Months Ended
	Mar. 31, 2018
Capital Ratios
Schedule of actual and required capital ratios	Minimum Capital Minimum Capital Required to be Required - Basel III Required - Basel III Considered Well Actual Phase-In Schedule Fully Phased In Capitalized (Dollars in thousands) Amount Ratio Capital Amount Ratio Capital Amount Ratio Capital Amount Ratio March 31, 2018 Common equity Tier 1 to risk-weighted assets: Consolidated $ 1,295,729 11.85 % $ 697,237 6.38 % $ 765,594 7.00 % $ 710,909 6.50 % South State Bank (the Bank) 1,385,289 12.67 % 697,253 6.38 % 765,612 7.00 % 710,925 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,406,832 12.86 % 861,293 7.88 % 929,650 8.50 % 874,964 8.00 % South State Bank (the Bank) 1,385,289 12.67 % 861,313 7.88 % 929,671 8.50 % 874,985 8.00 % Total capital to risk-weighted assets: Consolidated 1,456,453 13.32 % 1,080,034 9.88 % 1,148,391 10.50 % 1,093,706 10.00 % South State Bank (the Bank) 1,434,911 13.12 % 1,080,059 9.88 % 1,148,417 10.50 % 1,093,731 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,406,832 10.50 % 535,724 4.00 % 535,724 4.00 % 669,654 5.00 % South State Bank (the Bank) 1,385,289 10.35 % 535,522 4.00 % 535,522 4.00 % 669,402 5.00 % December 31, 2017: Common equity Tier 1 to risk-weighted assets: Consolidated $ 1,273,547 11.59 % $ 631,811 5.75 % $ 769,162 7.00 % $ 714,221 6.50 % South State Bank (the Bank) 1,360,603 12.38 % 631,741 5.75 % 769,077 7.00 % 714,143 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,384,433 12.60 % 796,632 7.25 % 933,982 8.50 % 879,042 8.00 % South State Bank (the Bank) 1,360,603 12.38 % 796,544 7.25 % 933,879 8.50 % 878,945 8.00 % Total capital to risk-weighted assets: Consolidated 1,432,843 13.04 % 1,016,392 9.25 % 1,153,742 10.50 % 1,098,802 10.00 % South State Bank (the Bank) 1,409,014 12.82 % 1,016,280 9.25 % 1,153,615 10.50 % 1,098,681 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,384,433 10.36 % 534,460 4.00 % 534,460 4.00 % 668,075 5.00 % South State Bank (the Bank) 1,360,603 10.18 % 534,390 4.00 % 534,390 4.00 % 667,987 5.00 % March 31, 2017: Common equity Tier 1 to risk-weighted assets: Consolidated $ 959,802 11.90 % $ 463,854 5.75 % $ 564,691 7.00 % $ 524,356 6.50 % South State Bank (the Bank) 998,061 12.37 % 463,767 5.75 % 564,586 7.00 % 524,259 6.50 % Tier 1 capital to risk-weighted assets: Consolidated 1,030,559 12.77 % 584,859 7.25 % 685,697 8.50 % 645,362 8.00 % South State Bank (the Bank) 998,061 12.37 % 584,750 7.25 % 685,569 8.50 % 645,241 8.00 % Total capital to risk-weighted assets: Consolidated 1,074,107 13.31 % 746,199 9.25 % 847,037 10.50 % 806,702 10.00 % South State Bank (the Bank) 1,041,277 12.91 % 746,060 9.25 % 846,879 10.50 % 806,552 10.00 % Tier 1 capital to average assets (leverage ratio): Consolidated 1,030,559 10.05 % 410,054 4.00 % 410,054 4.00 % 512,567 5.00 % South State Bank (the Bank) 998,061 9.75 % 409,567 4.00 % 409,567 4.00 % 511,959 5.00 %

Goodwill and Other Intangible43

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill and Other Intangible Assets
Summary of gross carrying amounts and accumulated amortization of other intangible assets	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Gross carrying amount $ 126,449 $ 126,449 $ 100,274 Accumulated amortization (56,073) (52,660) (44,813) $ 70,376 $ 73,789 $ 55,461
Schedule of estimated amortization expense for other intangibles for each of the next five quarters	(Dollars in thousands) Quarter ending: June 30, 2018 $ 3,401 September 30, 2018 3,400 December 31, 2018 3,400 March 31, 2019 3,156 June 30, 2019 3,144 Thereafter 53,875 $ 70,376

Loan Servicing, Mortgage Orig44

Loan Servicing, Mortgage Origination, and Loans Held for Sale (Tables)	3 Months Ended
	Mar. 31, 2018
Loan Servicing, Mortgage Origination, and Loans Held for Sale
Summary of changes in the fair value of MSRs and its offsetting hedge	Three Months Ended (Dollars in thousands) March 31, 2018 March 31, 2017 Increase in fair value of MSRs $ $ 444 Decay of MSRs (803) Gain (loss) related to derivatives 266 Net effect on statements of income $ $ (93)
Schedule of characteristics and sensitivity analysis of the MSR	March 31, December 31, March 31, (Dollars in thousands) 2018 2017 2017 Composition of residential loans serviced for others Fixed-rate mortgage loans 99.7 % 99.7 % 99.6 % Adjustable-rate mortgage loans 0.3 % 0.3 % 0.4 % Total 100.0 % 100.0 % 100.0 % Weighted average life years years 7.68 years Constant Prepayment rate (CPR) 6.3 % 7.7 % 7.8 % Weighted average discount rate 9.6 % 9.6 % 9.8 % Effect on fair value due to change in interest rates 25 basis point increase $ 1,025 $ 1,485 $ 1,375 50 basis point increase 1,791 2,664 2,431 25 basis point decrease (1,439) (1,850) (1,746) 50 basis point decrease (3,189) (4,014) (3,774)

Summary of Significant Accoun45

Summary of Significant Accounting Policies - (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)contract
Disaggregation of Revenue [Line Items]
Number of active contracts | contract	791,000
Trust and investment services income
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 7.5
Fees on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	25.8
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	33.8
Transferred over Time
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 4.8

Recent Accounting and Regulat46

Recent Accounting and Regulatory Pronouncements (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
ASU 2018- 02 | Early adoption
Reclassified to retained earnings from AOCI	$ 2.9
ASU 2016- 02 | If adopted
Right to use asset	83
Lease liabilities	$ 83

Mergers and Acquisitions - (Det

Mergers and Acquisitions - (Details)	Nov. 30, 2017USD ($)shares	Jan. 03, 2017USD ($)shares
Park Sterling Corporation
Mergers and Acquisitions
Fixed exchange ratio for shares issued (in shares)	0.14
Common stock shares issued | shares	7,480,343
Total purchase price	$ 692,959,000
Value of stock options	$ 4,305,000
Southeastern Bank Financial
Mergers and Acquisitions
Fixed exchange ratio for shares issued (in shares)		0.7307
Common stock shares issued | shares		4,978,338
Total purchase price		$ 435,115,000
Value of stock options		$ 490,000

Mergers and Acquisitions- Park

Mergers and Acquisitions- Park & SBFC - (Details) - USD ($)	Jan. 03, 2018	Nov. 30, 2017	Jan. 03, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Federal funds purchased and securities sold under agreements to repurchase				$ 357,574,000	$ 352,431,000	$ 286,857,000
Goodwill				999,592,000	595,711,000	$ 999,586,000
Proforma amounts
Total revenues (net interest income plus noninterest income), Pro Forma					167,044,000
Net operating income available to the common shareholder, Pro Forma					49,233,000
Park Sterling Corporation
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Cash and cash equivalents		$ 116,454,000
Investment securities		462,924,000
Loans held for sale		70,886,000
Loans, net of allowance and mark		2,250,684,000
Premises and equipment		55,790,000
Intangible assets		26,175,000		26,200,000
OREO and repossessed assets		2,330,000
Bank owned life insurance		72,703,000
Deferred tax asset.		29,562,000
Other assets		21,119,000
Total assets		3,108,627,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Noninterest-bearing		561,874,000
Interest-bearing		1,889,502,000
Total deposits		2,451,376,000
Other borrowings		340,938,000
Other liabilities		26,310,000
Total liabilities		2,818,624,000
Net identifiable assets acquired over (under) liabilities assumed		290,003,000
Goodwill		402,956,000
Net assets acquired over liabilities assumed		$ 692,959,000
Consideration:
Common stock shares issued		7,480,343
Purchase price per share of the Company's common stock (in dollars per share)		$ 92.05
Company common stock issued ($688,566) and cash exchanged for fractional shares ($88)		$ 688,654,000
Common stock issued		688,566,000
Price per fractional share		88
Cash paid for stock options outstanding		4,305,000
Fair value of total consideration transferred		692,959,000
Noncash Merger Related Costs					0
Merger-related charges/costs				11,300,000	$ 21,000,000
Provision for Loan and Lease Losses				678,000
Additional information
Adjustment to acquired loans portfolio		60,900,000
Allowance for loan losses		12,500,000
Fair value mark on loans		$ 21,300,000
Interest rate on core deposit intangibles (in %)		1.66%
Goodwill write-off		$ 73,100,000
Premium for fixed maturity time deposits		2,950,000
Fair value mark on fixed maturity time deposits		253,000
Fair value adjustment on Trust Preferred Securities		2,400,000
Discount on trust preferred securities		14,000,000
Fair value adjustments to employee benefit plans		1,500,000
Proforma amounts
Total revenues (net interest income plus noninterest income), Pro Forma				36,085,000
Net operating income available to the common shareholder, Pro Forma				11,072,000
Park Sterling Corporation | As previously recorded by acquiree
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Cash and cash equivalents		116,454,000
Investment securities		461,261,000
Loans held for sale		2,200,000
Loans, net of allowance and mark		2,346,612,000
Premises and equipment		61,059,000
Intangible assets		73,090,000
OREO and repossessed assets		2,549,000
Bank owned life insurance		72,703,000
Deferred tax asset.		17,963,000
Other assets		21,595,000
Total assets		3,175,486,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Noninterest-bearing		561,874,000
Interest-bearing		1,886,810,000
Total deposits		2,448,684,000
Other borrowings		329,249,000
Other liabilities		24,179,000
Total liabilities		2,802,112,000
Net identifiable assets acquired over (under) liabilities assumed		373,374,000
Net assets acquired over liabilities assumed		373,374,000
Park Sterling Corporation | Initial Fair Value Adjustments
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Investment securities		1,444,000
Loans held for sale		68,686,000
Loans, net of allowance and mark		(95,878,000)
Premises and equipment		(4,882,000)
Intangible assets		(46,915,000)
OREO and repossessed assets		(429,000)
Deferred tax asset.		11,596,000
Other assets		(476,000)
Total assets		(66,854,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Interest-bearing		2,692,000
Total deposits		2,692,000
Other borrowings		11,689,000
Other liabilities		2,131,000
Total liabilities		16,512,000
Net identifiable assets acquired over (under) liabilities assumed		(83,366,000)
Goodwill		402,951,000
Net assets acquired over liabilities assumed		319,585,000
Park Sterling Corporation | Subsequent Fair Value Adjustments
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Investment securities		219,000
Loans, net of allowance and mark		(50,000)
Premises and equipment		(387,000)
OREO and repossessed assets		210,000
Deferred tax asset.		3,000
Total assets		(5,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Net identifiable assets acquired over (under) liabilities assumed		(5,000)
Goodwill		$ 5,000
Southeastern Bank Financial
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Cash and cash equivalents			$ 72,043,000
Investment securities			590,054,000
Loans held for sale			13,652,000
Loans, net of allowance and mark			1,049,950,000
Premises and equipment			24,077,000
Intangible assets			18,120,000
OREO and repossessed assets			450,000
Bank owned life insurance			44,513,000
Deferred tax asset.			16,075,000
Other assets			7,063,000
Total assets			1,835,997,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Noninterest-bearing			262,967,000
Interest-bearing			1,257,953,000
Total deposits			1,520,920,000
Federal funds purchased and securities sold under agreements to repurchase			1,014,000
Other borrowings			109,500,000
Other liabilities			27,743,000
Total liabilities			1,659,177,000
Net identifiable assets acquired over (under) liabilities assumed			176,820,000
Goodwill			258,295,000
Net assets acquired over liabilities assumed			$ 435,115,000
Consideration:
Common stock shares issued			4,978,338
Purchase price per share of the Company's common stock (in dollars per share)			$ 87.30
Company common stock issued ($688,566) and cash exchanged for fractional shares ($88)			$ 434,625,000
Common stock issued			434,609,000
Price per fractional share			16,000
Cash paid for stock options outstanding			490,000
Fair value of total consideration transferred			435,115,000
Additional information
Adjustment to acquired loans portfolio			30,700,000
Allowance for loan losses			20,100,000
Discount on trust preferred securities			2,100,000
Federal Home Loan Bank, Advances, Premium			1,000,000
Fair value adjustments to employee benefit plans				$ 8,300,000
Adjustment of other miscellaneous liabilities	$ 496,000
Southeastern Bank Financial | As previously recorded by acquiree
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Cash and cash equivalents			72,043,000
Investment securities			591,824,000
Loans held for sale			13,652,000
Loans, net of allowance and mark			1,060,618,000
Premises and equipment			25,419,000
Intangible assets			140,000
OREO and repossessed assets			580,000
Bank owned life insurance			44,513,000
Deferred tax asset.			16,247,000
Other assets			7,545,000
Total assets			1,832,581,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Noninterest-bearing			262,967,000
Interest-bearing			1,257,953,000
Total deposits			1,520,920,000
Federal funds purchased and securities sold under agreements to repurchase			1,014,000
Other borrowings			110,620,000
Other liabilities			19,980,000
Total liabilities			1,652,534,000
Net identifiable assets acquired over (under) liabilities assumed			180,047,000
Net assets acquired over liabilities assumed			180,047,000
Southeastern Bank Financial | Initial Fair Value Adjustments
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Investment securities			(1,770,000)
Loans, net of allowance and mark			(10,668,000)
Premises and equipment			(2,212,000)
Intangible assets			17,980,000
OREO and repossessed assets			(30,000)
Deferred tax asset.			(687,000)
Other assets			(482,000)
Total assets			2,131,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Other borrowings			(1,120,000)
Other liabilities			5,553,000
Total liabilities			4,433,000
Net identifiable assets acquired over (under) liabilities assumed			(2,302,000)
Goodwill			257,370,000
Net assets acquired over liabilities assumed			255,068,000
Southeastern Bank Financial | Subsequent Fair Value Adjustments
Business Combination Recognized Identifiable Assets Acquired [Abstract]
Premises and equipment			870,000
OREO and repossessed assets			(100,000)
Deferred tax asset.			515,000
Total assets			1,285,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposit Liabilities [Abstract]
Other liabilities			2,210,000
Total liabilities			2,210,000
Net identifiable assets acquired over (under) liabilities assumed			(925,000)
Goodwill			$ 925,000

Investment Securities - Amortiz

Investment Securities - Amortized cost and fair value for held to maturity securities - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Investment securities held to maturity
Amortized Cost	$ 1,274	$ 2,529	$ 6,095
Fair Value	1,284	2,556	6,217
State and municipal obligations
Investment securities held to maturity
Amortized Cost	1,274	2,529	6,095
Gross Unrealized Gains	10	27	122
Fair Value	$ 1,284	$ 2,556	$ 6,217

Investment Securities - Amort50

Investment Securities - Amortized cost and fair value for available for sale securities - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Investment securities available for sale
Amortized cost	$ 1,669,833	$ 1,655,107	$ 1,377,433
Gross Unrealized Gains	2,480	5,903	9,927
Gross Unrealized Losses	(31,476)	(12,817)	(7,572)
Fair Value	1,640,837	1,648,193	1,379,788
Government-sponsored entities debt
Investment securities available for sale
Amortized cost	91,483	86,535	93,995
Gross Unrealized Gains		51	25
Gross Unrealized Losses	(1,737)	(1,077)	(721)
Fair Value	89,746	85,509	93,299
State and municipal obligations
Investment securities available for sale
Amortized cost	224,994	216,812	196,241
Gross Unrealized Gains	2,232	3,749	4,183
Gross Unrealized Losses	(1,540)	(124)	(140)
Fair Value	225,686	220,437	200,284
Mortgage-backed securities. issued by Government sponsored entities
Investment securities available for sale
Amortized cost	1,353,356	1,350,200	1,084,764
Gross Unrealized Gains	248	2,103	5,095
Gross Unrealized Losses	(28,199)	(11,616)	(6,420)
Fair Value	1,325,405	1,340,687	1,083,439
Corporate securities
Investment securities available for sale
Amortized cost		1,560	2,433
Gross Unrealized Gains			624
Gross Unrealized Losses			(291)
Fair Value		1,560	2,766
Mortgage-backed securities issued by private label holdings
Investment securities available for sale
Fair Value	$ 0	$ 0	$ 0

Investment Securities - Amort51

Investment Securities - Amortized cost and fair value of other investment securities - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Available for Sale Securities
Amortized Cost	$ 23,479	$ 23,047	$ 14,726
Fair Value	23,479	23,047	14,726
Amortized Cost
Due in one year or less	1,173
Due after one year through five years	122,525
Due after five years through ten years	374,833
Due after ten years	1,171,302
Fair Value	1,669,833	1,655,107	1,377,433
Fair Value
Due in one year or less	1,175
Due after one year through five years	121,675
Due after five years through ten years	369,402
Due after ten years	1,148,585
Fair Value	1,640,837	1,648,193	1,379,788
Amortized Cost
Due after five years through ten years	1,274
Total	1,274	2,529	6,095
Fair Value
Due after five years through ten years	1,284
Fair Value	1,284	2,556	6,217
Federal Home Loan Bank stock
Available for Sale Securities
Amortized Cost	17,399	16,967	11,239
Fair Value	17,399	16,967	11,239
Investment in unconsolidated subsidiaries
Available for Sale Securities
Amortized Cost	3,563	3,563	2,262
Fair Value	3,563	3,563	2,262
Other nonmarketable investment securities
Available for Sale Securities
Amortized Cost	2,517	2,517	1,225
Fair Value	$ 2,517	$ 2,517	$ 1,225

Investment Securities (Details)

Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	$ 19,471	$ 5,020	$ 7,210
Twelve Months or More	12,005	7,797	362
Securities Available for Sale, Fair Value
Less Than Twelve Months	1,042,754	654,893	700,546
Twelve Months or More	360,489	374,582	3,391
Government-sponsored entities debt
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	918	403	721
Twelve Months or More	819	674
Securities Available for Sale, Fair Value
Less Than Twelve Months	34,712	27,442	87,609
Twelve Months or More	55,034	52,324
State and municipal obligations
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	1,523	124	140
Twelve Months or More	17
Securities Available for Sale, Fair Value
Less Than Twelve Months	69,118	17,400	10,984
Twelve Months or More	724
Mortgage-backed securities. issued by Government sponsored entities
Securities Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	17,030	4,493	6,349
Twelve Months or More	11,169	7,123	71
Securities Available for Sale, Fair Value
Less Than Twelve Months	938,924	610,051	601,953
Twelve Months or More	$ 304,731	$ 322,258	1,940
Corporate securities
Securities Available for Sale, Gross Unrealized Losses
Twelve Months or More			291
Securities Available for Sale, Fair Value
Twelve Months or More			$ 1,451

Loans and Allowance for Loan 53

Loans and Allowance for Loan Losses - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Allowance for Loan Losses
Loans, net	$ 10,589,521	$ 10,575,417	$ 7,868,840
Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	6,762,512	6,492,155	5,564,307
Less allowance for non-acquired loan losses	(45,203)	(43,448)	(38,449)	$ (36,960)
Loans, net	6,717,309	6,448,707	5,525,858
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	601,358	623,430	631,896
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	3,274,938	3,507,907	1,715,642
Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans			238,612
Residential real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	248,766	260,787	266,484
Commercial non-owner occupied real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	1,922,065	1,839,768	1,450,542
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	871,141	830,875	646,544
Less allowance for non-acquired loan losses	(5,847)	(5,921)	(4,649)	(4,091)
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	1,050,924	1,008,893	803,998
Less allowance for non-acquired loan losses	(6,798)	(6,525)	(5,464)	(4,980)
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	46,219	49,649	57,343
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	233,277	234,595	223,156
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	349,532	403,357
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	783,466	817,166	217,850
Commercial owner occupied real estate loan | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	1,296,738	1,262,776	1,200,004
Less allowance for non-acquired loan losses	(8,346)	(8,128)	(7,894)	(8,022)
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	498,541	521,818
Consumer real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	2,061,083	1,967,902	1,649,456
Consumer real estate | Non-acquired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans	448,582	437,642	396,806
Less allowance for non-acquired loan losses	(3,237)	(3,250)	(3,456)	(3,211)
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	1,612,501	1,530,260	1,252,650
Less allowance for non-acquired loan losses	(10,193)	(9,668)	(8,108)	(7,820)
Consumer real estate | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans	295,721	320,591	186,411
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	683,614	710,611	550,578
Commercial and industrial | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	872,363	815,187	725,974
Less allowance for non-acquired loan losses	(6,333)	(5,488)	(5,124)	(4,842)
Commercial and industrial | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	24,295	26,946	26,225
Commercial and industrial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	344,171	398,696	136,309
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans			141,897
Commercial and industrial | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans			136,309
Other income producing property | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	198,684	193,847	182,416
Less allowance for non-acquired loan losses	(1,393)	(1,375)	(1,345)	(1,542)
Other income producing property | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	186,091	196,669	92,044
Consumer | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	390,784	378,985	340,292
Less allowance for non-acquired loan losses	(2,899)	(2,788)	(2,443)	(2,350)
Consumer | Non-acquired loans | Consumer
Loans and Allowance for Loan Losses
Total loans	390,784	378,985	340,292
Consumer | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	48,801	51,453	58,688
Consumer | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	133,802	137,710	151,941
Commercial | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	4,289,850	4,111,578	3,558,936
Commercial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	349,532		141,897
Commercial | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	498,541		238,612
Other loans | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	20,795	33,690	15,623
Less allowance for non-acquired loan losses	$ (157)	(305)	$ 34	$ (102)
Other loans | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans		$ 1,289

Loans and Allowance for Loan 54

Loans and Allowance for Loan Losses - Summary of acquired non credit impaired loans - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	$ 601,358	$ 623,430	$ 631,896
Less allowance for loan losses	(4,084)	(4,627)	(4,556)	$ (3,395)
Acquired loans, net	597,274	618,803	627,340	602,546
Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	3,274,938	3,507,907	1,715,642
Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	601,358	623,430	631,896
Less allowance for loan losses	(4,084)	(4,627)	(4,556)
Acquired loans, net	597,274	618,803	627,340
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Unamortized Discounts	55,300	65,200	26,300
Carrying value	3,274,938	3,507,907	1,715,642
Residential real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	248,766	260,787	266,484
Less allowance for loan losses	(2,509)	(3,553)	(3,108)	(2,419)
Residential real estate | Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	248,766	260,787	266,484
Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	1,132,998	1,220,523	359,747
Commercial owner occupied real estate loan | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	498,541	521,818	238,612
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	498,541	521,818	238,612
Consumer real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	48,801		58,688
Less allowance for loan losses	(594)	(461)	(589)	(558)
Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	979,335	1,031,202	736,989
Consumer real estate | Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	48,801	51,453	58,688
Consumer real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	1,113,137	1,170,201	888,930
Commercial and industrial | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	24,295	26,946	26,225
Less allowance for loan losses	(505)	(145)	(395)	(238)
Commercial and industrial | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	344,171	398,696	136,309
Commercial and industrial | Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	24,295	26,946	26,225
Commercial and industrial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	344,171	398,696	136,309
Other income producing property | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	186,091	196,669	92,044
Other income producing property | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	186,091	196,669	92,044
Consumer | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	48,801	51,453	58,688
Consumer | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	133,802	137,710	151,941
Commercial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	2,161,801	2,337,706	826,712
Other loans | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value		1,289
Other loans | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value		1,289
Construction and land development | Commercial non-owner occupied real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	46,219	49,649	57,343
Less allowance for loan losses	(215)	(180)	(130)	(139)
Construction and land development | Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	349,532	403,357	141,897
Construction and land development | Commercial non-owner occupied real estate | Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	46,219	49,649	57,343
Construction and land development | Commercial non-owner occupied real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	349,532	403,357	141,897
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	233,277	234,595	223,156
Less allowance for loan losses	(261)	(288)	(334)	$ (41)
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	783,466	817,166	217,850
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	233,277	234,595	223,156
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	783,466	817,166	217,850
Home equity loans | Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	295,721	320,591	186,411
Home equity loans | Consumer real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	295,721	320,591	186,411
Consumer | Consumer real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	133,802	137,710	151,941
Consumer Owner Occupied Loans | Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	683,614	710,611	550,578
Consumer Owner Occupied Loans | Consumer real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	$ 683,614	$ 710,611	$ 550,578

Loans and Allowance for Loan 55

Loans and Allowance for Loan Losses - Table of loan payment estimates - (Details) - USD ($) $ in Thousands	Nov. 30, 2017	Jan. 03, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Contractual principal and interest			$ 765,057	$ 795,850	$ 812,892
Non-accretable difference			(33,841)	(39,324)	(31,273)
Cash flows expected to be collected			731,216	756,526	781,619
Accretable Yield			(129,858)	(133,096)	(149,723)
Carrying value			601,358	623,430	631,896
Allowance for loan losses on acquired loans			(4,084)	(4,627)	(4,556)	$ (3,395)
Acquired credit impaired loans | Park Sterling Corporation
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Contractual principal and interest	$ 92,600
Non-accretable difference	(12,840)
Cash flows expected to be collected	79,760
Accretable difference	(8,829)
Carrying value	70,931
Acquired credit impaired loans | Southeastern Bank Financial
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Contractual principal and interest		$ 73,365
Non-accretable difference		(12,912)
Cash flows expected to be collected		60,453
Accretable difference		(4,603)
Carrying value		55,850
Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			3,274,938	3,507,907	1,715,642
Acquired non-credit impaired loans accounted under FASB 310 20 | Park Sterling Corporation
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Contractual principal and interest	2,200,000
After fair value adjustment	2,300,000
Fair value adjustment	$ 50,100
Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			601,358	623,430	631,896
Allowance for loan losses on acquired loans			(4,084)	(4,627)	(4,556)
Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20 | Southeastern Bank Financial
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Contractual principal and interest		1,010,000
Carrying value		991,500
Fair value adjustment		$ 18,800
Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			3,274,938	3,507,907	1,715,642
Residential real estate | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			248,766	260,787	266,484
Allowance for loan losses on acquired loans			(2,509)	(3,553)	(3,108)	(2,419)
Residential real estate | Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			248,766	260,787	266,484
Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			1,132,998	1,220,523	359,747
Commercial owner occupied real estate loan | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			498,541	521,818	238,612
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			498,541	521,818	238,612
Consumer real estate | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			48,801		58,688
Allowance for loan losses on acquired loans			(594)	(461)	(589)	(558)
Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			979,335	1,031,202	736,989
Consumer real estate | Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			48,801	51,453	58,688
Consumer real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			1,113,137	1,170,201	888,930
Commercial and industrial | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			24,295	26,946	26,225
Allowance for loan losses on acquired loans			(505)	(145)	(395)	(238)
Commercial and industrial | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			344,171	398,696	136,309
Commercial and industrial | Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			24,295	26,946	26,225
Commercial and industrial | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			344,171	398,696	136,309
Other income producing property | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			186,091	196,669	92,044
Other income producing property | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			186,091	196,669	92,044
Consumer | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			48,801	51,453	58,688
Consumer | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			133,802	137,710	151,941
Commercial | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			2,161,801	2,337,706	826,712
Other loans | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value				1,289
Other loans | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value				1,289
Construction and land development | Commercial non-owner occupied real estate | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			46,219	49,649	57,343
Allowance for loan losses on acquired loans			(215)	(180)	(130)	(139)
Construction and land development | Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			349,532	403,357	141,897
Construction and land development | Commercial non-owner occupied real estate | Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			46,219	49,649	57,343
Construction and land development | Commercial non-owner occupied real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			349,532	403,357	141,897
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			233,277	234,595	223,156
Allowance for loan losses on acquired loans			(261)	(288)	(334)	$ (41)
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			783,466	817,166	217,850
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired credit impaired loans accounted under FASB 310 30
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			233,277	234,595	223,156
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			783,466	817,166	217,850
Home equity loans | Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			295,721	320,591	186,411
Home equity loans | Consumer real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			295,721	320,591	186,411
Consumer | Consumer real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			133,802	137,710	151,941
Consumer Owner Occupied Loans | Consumer real estate | Acquired non-credit impaired loans accounted under FASB 310 20
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			683,614	710,611	550,578
Consumer Owner Occupied Loans | Consumer real estate | Acquired non-credit impaired loans
Contractual loan payments receivable, estimates of amounts not expected to be collected, other fair value adjustments and the resulting fair values of acquired loans
Carrying value			$ 683,614	$ 710,611	$ 550,578

Loans and Allowance for Loan 56

Loans and Allowance for Loan Losses - Changes in the carrying value of acquired credit impaired loans - (Details)	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2015USD ($)
Changes in the carrying amount of accretable difference for acquired impaired and non-impaired loans
Percentage of loss adjustment based on most current collateral value			90
Maximum
Changes in the carrying amount of accretable difference for acquired impaired and non-impaired loans
Threshold limit of loans for risk assessment by loan officers			$ 500,000
Minimum
Changes in the carrying amount of accretable difference for acquired impaired and non-impaired loans
Threshold limit of loans for risk assessment by loan officers			$ 100,000
Acquired credit impaired loans
Changes in the carrying value of acquired loans at the acquisition date
Balance at the beginning of the period	$ 618,803,000	$ 602,546,000
Fair value of acquired loans		55,850,000
Net reductions for payments, foreclosures, and accretion	(22,072,000)	(29,895,000)
Change in the allowance for loan losses on acquired loans	543,000	(1,161,000)
Balance at the end of the period	597,274,000	627,340,000
Changes in the carrying amount of accretable difference for acquired impaired and non-impaired loans
Balance at beginning of period	133,096,000	155,379,000
Accretion	(12,366,000)	(15,214,000)
Reclass of nonaccretable difference due to improvement in expected cash flows	9,204,000	5,062,000
Other changes, net	(76,000)	(107,000)
Balance at end of period	129,858,000	149,723,000
Decline in accretable yield balance	3,200,000
Improved expected cash flows	$ 9,200,000
Acquired credit impaired loans | Southeastern Bank Financial
Changes in the carrying amount of accretable difference for acquired impaired and non-impaired loans
Addition from acquisition		$ 4,603,000

Loans and Allowance for Loan 57

Loans and Allowance for Loan Losses - Aggregated analysis of the changes in allowance for loan losses - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Changes in allowance for loan losses
Balance at beginning of period	$ 48,075	$ 40,355
Loans charged-off	(1,503)	(1,686)
Recoveries of loans previously charged off	967	732
Net charge-offs	(536)	(954)
Provision for loan losses charged to operations	2,454	3,707
Reduction due to loan removals	(706)	(103)
Balance at end of period	49,287	43,005
Non-acquired loans
Changes in allowance for loan losses
Balance at beginning of period	43,448	36,960
Loans charged-off	(1,169)	(1,297)
Recoveries of loans previously charged off	802	669
Net charge-offs	(367)	(628)
Provision for loan losses charged to operations	2,122	2,117
Balance at end of period	45,203	38,449
Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off	(334)	(389)
Recoveries of loans previously charged off	165	63
Net charge-offs	(169)	(326)
Provision for loan losses charged to operations	169	326
Acquired credit impaired loans
Changes in allowance for loan losses
Balance at beginning of period	4,627	3,395
Provision for loan losses charged to operations	163	1,264
Reduction due to loan removals	(706)	(103)
Balance at end of period	4,084	4,556
Residential real estate | Acquired credit impaired loans
Changes in allowance for loan losses
Reduction due to loan removals	(100)	(63)
Commercial owner occupied real estate loan | Non-acquired loans
Changes in allowance for loan losses
Recoveries of loans previously charged off	8	7
Provision for loan losses charged to operations	210	(135)
Consumer real estate | Acquired credit impaired loans
Changes in allowance for loan losses
Reduction due to loan removals		(6)
Commercial and industrial | Non-acquired loans
Changes in allowance for loan losses
Loans charged-off	(85)	(22)
Recoveries of loans previously charged off	15	90
Provision for loan losses charged to operations	915	214
Commercial and industrial | Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off	(43)	(2)
Recoveries of loans previously charged off	53	1
Provision for loan losses charged to operations	(10)	1
Commercial and industrial | Acquired credit impaired loans
Changes in allowance for loan losses
Reduction due to loan removals	(540)	(30)
Other income producing property | Non-acquired loans
Changes in allowance for loan losses
Recoveries of loans previously charged off	8	43
Provision for loan losses charged to operations	10	(240)
Other income producing property | Acquired non-credit impaired loans
Changes in allowance for loan losses
Recoveries of loans previously charged off		1
Provision for loan losses charged to operations		(1)
Consumer | Non-acquired loans
Changes in allowance for loan losses
Loans charged-off	(979)	(713)
Recoveries of loans previously charged off	203	211
Provision for loan losses charged to operations	887	595
Consumer | Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off	(138)	(74)
Recoveries of loans previously charged off	3	12
Provision for loan losses charged to operations	135	62
Other loans | Non-acquired loans
Changes in allowance for loan losses
Provision for loan losses charged to operations	(148)	(136)
Construction and land development | Commercial non-owner occupied real estate | Non-acquired loans
Changes in allowance for loan losses
Loans charged-off	(35)	(405)
Recoveries of loans previously charged off	442	154
Provision for loan losses charged to operations	(481)	809
Construction and land development | Commercial non-owner occupied real estate | Acquired credit impaired loans
Changes in allowance for loan losses
Reduction due to loan removals	(53)	(6)
Construction and land development | Commercial | Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off	(1)
Recoveries of loans previously charged off	1	1
Provision for loan losses charged to operations		(1)
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Non-acquired loans
Changes in allowance for loan losses
Recoveries of loans previously charged off	2	41
Provision for loan losses charged to operations	271	443
Other commercial non-owner occupied real estate | Commercial non-owner occupied real estate | Acquired credit impaired loans
Changes in allowance for loan losses
Reduction due to loan removals	(13)	2
Home equity loans | Consumer real estate | Non-acquired loans
Changes in allowance for loan losses
Loans charged-off	(66)	(34)
Recoveries of loans previously charged off	101	74
Provision for loan losses charged to operations	(48)	205
Home equity loans | Consumer real estate | Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off	(82)
Recoveries of loans previously charged off	51	9
Provision for loan losses charged to operations	31	(9)
Consumer Owner Occupied Loans | Consumer real estate | Non-acquired loans
Changes in allowance for loan losses
Loans charged-off	(4)	(123)
Recoveries of loans previously charged off	23	49
Provision for loan losses charged to operations	506	362
Consumer Owner Occupied Loans | Consumer real estate | Acquired non-credit impaired loans
Changes in allowance for loan losses
Loans charged-off		(313)
Recoveries of loans previously charged off	57	39
Provision for loan losses charged to operations	$ 13	$ 274

Loans and Allowance for Loan 58

Loans and Allowance for Loan Losses - Disaggregated analysis of activity in for allowances for non acquired loans - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses:
Charge-offs	$ (1,503)	$ (1,686)
Recoveries	967	732
Provision (benefit)	2,454	3,707
Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	43,448	36,960
Charge-offs	(1,169)	(1,297)
Recoveries	802	669
Provision (benefit)	2,122	2,117
Balance at end of period	45,203	38,449
Loans individually evaluated for impairment	1,712	1,658
Loans collectively evaluated for impairment	43,491	36,791
Loans:
Loans individually evaluated for impairment	66,696	27,323
Loans collectively evaluated for impairment	6,695,816	5,536,984
Total loans	6,762,512	5,564,307	$ 6,492,155
Acquired non-credit impaired loans
Allowance for loan losses:
Charge-offs	(334)	(389)
Recoveries	165	63
Provision (benefit)	169	326
Loans:
Loans collectively evaluated for impairment	3,274,938	1,715,642
Total loans	3,274,938	1,715,642	3,507,907
Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans:
Total loans		238,612
Commercial non-owner occupied real estate | Non-acquired loans
Loans:
Total loans	1,922,065	1,450,542	1,839,768
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development
Allowance for loan losses:
Balance at beginning of period	5,921	4,091
Charge-offs	(35)	(405)
Recoveries	442	154
Provision (benefit)	(481)	809
Balance at end of period	5,847	4,649
Loans individually evaluated for impairment	767	459
Loans collectively evaluated for impairment	5,080	4,190
Loans:
Loans individually evaluated for impairment	46,198	9,286
Loans collectively evaluated for impairment	824,943	637,258
Total loans	871,141	646,544	830,875
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate
Allowance for loan losses:
Balance at beginning of period	6,525	4,980
Recoveries	2	41
Provision (benefit)	271	443
Balance at end of period	6,798	5,464
Loans individually evaluated for impairment	110	158
Loans collectively evaluated for impairment	6,688	5,306
Loans:
Loans individually evaluated for impairment	1,181	775
Loans collectively evaluated for impairment	1,049,743	803,223
Total loans	1,050,924	803,998	1,008,893
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development
Loans:
Total loans	349,532		403,357
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans:
Loans collectively evaluated for impairment	783,466	217,850
Total loans	783,466	217,850	817,166
Commercial owner occupied real estate loan | Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	8,128	8,022
Recoveries	8	7
Provision (benefit)	210	(135)
Balance at end of period	8,346	7,894
Loans individually evaluated for impairment	63	60
Loans collectively evaluated for impairment	8,283	7,834
Loans:
Loans individually evaluated for impairment	5,578	6,251
Loans collectively evaluated for impairment	1,291,160	1,193,753
Total loans	1,296,738	1,200,004	1,262,776
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Loans:
Total loans	498,541		521,818
Consumer real estate | Non-acquired loans
Loans:
Total loans	2,061,083	1,649,456	1,967,902
Consumer real estate | Non-acquired loans | Home equity loans
Allowance for loan losses:
Balance at beginning of period	3,250	3,211
Charge-offs	(66)	(34)
Recoveries	101	74
Provision (benefit)	(48)	205
Balance at end of period	3,237	3,456
Loans individually evaluated for impairment	73	297
Loans collectively evaluated for impairment	3,164	3,159
Loans:
Loans individually evaluated for impairment	3,168	2,432
Loans collectively evaluated for impairment	445,414	394,374
Total loans	448,582	396,806	437,642
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans
Allowance for loan losses:
Balance at beginning of period	9,668	7,820
Charge-offs	(4)	(123)
Recoveries	23	49
Provision (benefit)	506	362
Balance at end of period	10,193	8,108
Loans individually evaluated for impairment	35	68
Loans collectively evaluated for impairment	10,158	8,040
Loans:
Loans individually evaluated for impairment	5,493	4,712
Loans collectively evaluated for impairment	1,607,008	1,247,938
Total loans	1,612,501	1,252,650	1,530,260
Consumer real estate | Acquired non-credit impaired loans | Home equity loans
Allowance for loan losses:
Charge-offs	(82)
Recoveries	51	9
Provision (benefit)	31	(9)
Loans:
Loans collectively evaluated for impairment	295,721	186,411
Total loans	295,721	186,411	320,591
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Allowance for loan losses:
Charge-offs		(313)
Charge-offs (added back)	(70)
Recoveries	57	39
Provision (benefit)	13	274
Loans:
Loans collectively evaluated for impairment	683,614	550,578
Total loans	683,614	550,578	710,611
Commercial and industrial | Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	5,488	4,842
Charge-offs	(85)	(22)
Recoveries	15	90
Provision (benefit)	915	214
Balance at end of period	6,333	5,124
Loans individually evaluated for impairment	489	387
Loans collectively evaluated for impairment	5,844	4,737
Loans:
Loans individually evaluated for impairment	1,677	1,270
Loans collectively evaluated for impairment	870,686	724,704
Total loans	872,363	725,974	815,187
Commercial and industrial | Acquired non-credit impaired loans
Allowance for loan losses:
Charge-offs	(43)	(2)
Recoveries	53	1
Provision (benefit)	(10)	1
Loans:
Loans collectively evaluated for impairment	344,171	136,309
Total loans	344,171	136,309	398,696
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development
Loans:
Total loans		141,897
Commercial and industrial | Acquired non-credit impaired loans | Home equity loans
Loans:
Total loans		136,309
Other income producing property | Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	1,375	1,542
Recoveries	8	43
Provision (benefit)	10	(240)
Balance at end of period	1,393	1,345
Loans individually evaluated for impairment	166	224
Loans collectively evaluated for impairment	1,227	1,121
Loans:
Loans individually evaluated for impairment	3,086	2,408
Loans collectively evaluated for impairment	195,598	180,008
Total loans	198,684	182,416	193,847
Other income producing property | Acquired non-credit impaired loans
Allowance for loan losses:
Recoveries		1
Provision (benefit)		(1)
Loans:
Loans collectively evaluated for impairment	186,091	92,044
Total loans	186,091	92,044	196,669
Consumer | Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	2,788	2,350
Charge-offs	(979)	(713)
Recoveries	203	211
Provision (benefit)	887	595
Balance at end of period	2,899	2,443
Loans individually evaluated for impairment	9	5
Loans collectively evaluated for impairment	2,890	2,438
Loans:
Loans individually evaluated for impairment	315	189
Loans collectively evaluated for impairment	390,469	340,103
Total loans	390,784	340,292	378,985
Consumer | Non-acquired loans | Consumer
Loans:
Total loans	390,784	340,292	378,985
Consumer | Acquired non-credit impaired loans
Allowance for loan losses:
Charge-offs	(138)	(74)
Recoveries	3	12
Provision (benefit)	135	62
Loans:
Loans collectively evaluated for impairment	133,802	151,941
Total loans	133,802	151,941	137,710
Commercial | Non-acquired loans
Loans:
Total loans	4,289,850	3,558,936	4,111,578
Commercial | Acquired non-credit impaired loans | Construction and land development
Allowance for loan losses:
Charge-offs	(1)
Recoveries	1	1
Provision (benefit)		(1)
Loans:
Loans collectively evaluated for impairment	349,532	141,897
Total loans	349,532	141,897
Commercial | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans:
Loans collectively evaluated for impairment	498,541	238,612
Total loans	498,541	238,612
Other loans | Non-acquired loans
Allowance for loan losses:
Balance at beginning of period	305	102
Provision (benefit)	(148)	(136)
Balance at end of period	157	(34)
Loans collectively evaluated for impairment	157	(34)
Loans:
Loans collectively evaluated for impairment	20,795	15,623
Total loans	$ 20,795	$ 15,623	33,690
Other loans | Acquired non-credit impaired loans
Loans:
Total loans			$ 1,289

Loans and Allowance for Loan 59

Loans and Allowance for Loan Losses - Disaggregated analysis of activity in the allowance for acquired credit impaired loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses:
Reduction due to loan removals	$ (706)	$ (103)
Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	1,712	1,658
Loans collectively evaluated for impairment	43,491	36,791
Loans:
Loans individually evaluated for impairment	66,696	27,323
Loans collectively evaluated for impairment	6,695,816	5,536,984
Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	4,627	3,395
Provision (benefit) for loan losses	163	1,264
Reduction due to loan removals	(706)	(103)
Balance at the end of the period	4,084	4,556
Loans collectively evaluated for impairment	4,084	4,556
Loans:
Loans collectively evaluated for impairment	601,358	631,896
Carrying value	601,358	631,896	$ 623,430
Residential real estate | Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	3,553	2,419
Provision (benefit) for loan losses	(944)	752
Reduction due to loan removals	(100)	(63)
Balance at the end of the period	2,509	3,108
Loans collectively evaluated for impairment	2,509	3,108
Loans:
Loans collectively evaluated for impairment	248,766	266,484
Carrying value	248,766	266,484	260,787
Commercial non-owner occupied real estate | Construction and land development | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	767	459
Loans collectively evaluated for impairment	5,080	4,190
Loans:
Loans individually evaluated for impairment	46,198	9,286
Loans collectively evaluated for impairment	824,943	637,258
Commercial non-owner occupied real estate | Construction and land development | Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	180	139
Provision (benefit) for loan losses	88	(3)
Reduction due to loan removals	(53)	(6)
Balance at the end of the period	215	130
Loans collectively evaluated for impairment	215	130
Loans:
Loans collectively evaluated for impairment	46,219	57,343
Carrying value	46,219	57,343	49,649
Commercial non-owner occupied real estate | Other commercial non-owner occupied real estate | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	110	158
Loans collectively evaluated for impairment	6,688	5,306
Loans:
Loans individually evaluated for impairment	1,181	775
Loans collectively evaluated for impairment	1,049,743	803,223
Commercial non-owner occupied real estate | Other commercial non-owner occupied real estate | Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	288	41
Provision (benefit) for loan losses	(14)	291
Reduction due to loan removals	(13)	2
Balance at the end of the period	261	334
Loans collectively evaluated for impairment	261	334
Loans:
Loans collectively evaluated for impairment	233,277	223,156
Carrying value	233,277	223,156	234,595
Consumer real estate | Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	461	558
Provision (benefit) for loan losses	133	37
Reduction due to loan removals		(6)
Balance at the end of the period	594	589
Loans collectively evaluated for impairment	594	589
Loans:
Loans collectively evaluated for impairment	48,801	58,688
Carrying value	48,801	58,688
Consumer real estate | Home equity loans | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	73	297
Loans collectively evaluated for impairment	3,164	3,159
Loans:
Loans individually evaluated for impairment	3,168	2,432
Loans collectively evaluated for impairment	445,414	394,374
Commercial and industrial | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	489	387
Loans collectively evaluated for impairment	5,844	4,737
Loans:
Loans individually evaluated for impairment	1,677	1,270
Loans collectively evaluated for impairment	870,686	724,704
Commercial and industrial | Acquired credit impaired loans
Allowance for loan losses:
Balance at the beginning of the period	145	238
Provision (benefit) for loan losses	900	187
Reduction due to loan removals	(540)	(30)
Balance at the end of the period	505	395
Loans collectively evaluated for impairment	505	395
Loans:
Loans collectively evaluated for impairment	24,295	26,225
Carrying value	24,295	26,225	26,946
Other income producing property | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	166	224
Loans collectively evaluated for impairment	1,227	1,121
Loans:
Loans individually evaluated for impairment	3,086	2,408
Loans collectively evaluated for impairment	195,598	180,008
Consumer | Non-acquired loans
Allowance for loan losses:
Loans individually evaluated for impairment	9	5
Loans collectively evaluated for impairment	2,890	2,438
Loans:
Loans individually evaluated for impairment	315	189
Loans collectively evaluated for impairment	390,469	340,103
Consumer | Acquired credit impaired loans
Loans:
Carrying value	$ 48,801	$ 58,688	$ 51,453

Loans and Allowance for Loan 60

Loans and Allowance for Loan Losses - Credit risk profile by risk grade of non acquired loans - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Allowance for Loan Losses
Other Real Estate, Non Covered	$ 11,073	$ 11,203	$ 20,007	$ 18,316
Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	6,762,512	6,492,155	5,564,307
Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	6,645,048	6,375,759	5,432,278
Non-acquired loans | Special mention
Loans and Allowance for Loan Losses
Total loans	79,619	78,325	85,425
Non-acquired loans | Substandard
Loans and Allowance for Loan Losses
Total loans	37,845	38,071	46,604
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	3,274,938	3,507,907	1,715,642
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,274,938	3,507,907	1,715,642
Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,207,265	3,438,030	1,680,567
Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	45,043	49,868	24,404
Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	22,630	20,009	10,671
Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans			238,612
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	601,358	623,430	631,896
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	601,358	623,430	631,896
Acquired credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	354,448	369,348	368,200
Acquired credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	97,510	106,723	116,837
Acquired credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	149,400	147,359	146,859
Residential real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	248,766	260,787	266,484
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	248,766	260,787	266,484
Residential real estate | Acquired credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	129,952	135,974	142,847
Residential real estate | Acquired credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	50,845	54,500	53,539
Residential real estate | Acquired credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	67,969	70,313	70,098
Commercial non-owner occupied real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	1,922,065	1,839,768	1,450,542
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	871,141	830,875	646,544
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Pass
Loans and Allowance for Loan Losses
Total loans	857,307	818,240	633,953
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Special mention
Loans and Allowance for Loan Losses
Total loans	10,499	8,758	8,868
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Substandard
Loans and Allowance for Loan Losses
Total loans	3,335	3,877	3,723
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	1,050,924	1,008,893	803,998
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Pass
Loans and Allowance for Loan Losses
Total loans	1,040,669	999,049	790,687
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Special mention
Loans and Allowance for Loan Losses
Total loans	8,497	7,864	11,233
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Substandard
Loans and Allowance for Loan Losses
Total loans	1,758	1,980	2,078
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	349,532	403,357
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	349,532	403,357	141,897
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	345,635	394,139	139,748
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,892	4,602	1,316
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,005	4,616	833
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	783,466	817,166	217,850
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	783,466	817,166	217,850
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	775,924	809,241	213,827
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	7,533	7,913	3,937
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	9	12	86
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	46,219	49,649	57,343
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	46,219	49,649	57,343
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	28,501	29,620	28,157
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,654	5,132	15,117
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	13,064	14,897	14,069
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	233,277	234,595	223,156
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	233,277	234,595	223,156
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	171,585	177,231	170,623
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	24,550	28,708	24,412
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	37,142	28,656	28,121
Commercial owner occupied real estate loan | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	1,296,738	1,262,776	1,200,004
Commercial owner occupied real estate loan | Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	1,267,759	1,232,927	1,167,531
Commercial owner occupied real estate loan | Non-acquired loans | Special mention
Loans and Allowance for Loan Losses
Total loans	22,619	23,575	20,277
Commercial owner occupied real estate loan | Non-acquired loans | Substandard
Loans and Allowance for Loan Losses
Total loans	6,360	6,274	12,196
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	498,541	521,818
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	498,541	521,818	238,612
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	490,089	513,861	233,397
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,254	7,740	5,057
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	198	217	158
Consumer real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	2,061,083	1,967,902	1,649,456
Consumer real estate | Non-acquired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans	448,582	437,642	396,806
Consumer real estate | Non-acquired loans | Home equity loans | Pass
Loans and Allowance for Loan Losses
Total loans	435,282	424,369	382,387
Consumer real estate | Non-acquired loans | Home equity loans | Special mention
Loans and Allowance for Loan Losses
Total loans	6,767	6,749	7,597
Consumer real estate | Non-acquired loans | Home equity loans | Substandard
Loans and Allowance for Loan Losses
Total loans	6,533	6,524	6,822
Consumer real estate | Non-acquired loans | All Consumer
Loans and Allowance for Loan Losses
Total loans	2,472,662	2,380,577	2,005,371
Consumer real estate | Non-acquired loans | All Consumer | Pass
Loans and Allowance for Loan Losses
Total loans	2,429,890	2,337,500	1,962,039
Consumer real estate | Non-acquired loans | All Consumer | Special mention
Loans and Allowance for Loan Losses
Total loans	20,397	20,964	22,125
Consumer real estate | Non-acquired loans | All Consumer | Substandard
Loans and Allowance for Loan Losses
Total loans	22,375	22,113	21,207
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	1,612,501	1,530,260	1,252,650
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Pass
Loans and Allowance for Loan Losses
Total loans	1,584,427	1,502,016	1,225,556
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Special mention
Loans and Allowance for Loan Losses
Total loans	13,329	13,902	13,903
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Substandard
Loans and Allowance for Loan Losses
Total loans	14,745	14,342	13,191
Consumer real estate | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,113,137	1,170,201	888,930
Consumer real estate | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,087,383	1,141,218	871,525
Consumer real estate | Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	13,946	15,183	8,566
Consumer real estate | Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	11,808	13,800	8,839
Consumer real estate | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans	295,721	320,591	186,411
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	295,721	320,591	186,411
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	279,487	301,842	176,678
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,942	10,477	4,700
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	7,292	8,272	5,033
Consumer real estate | Acquired non-credit impaired loans | Consumer
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	133,802	137,710	151,941
Consumer real estate | Acquired non-credit impaired loans | Consumer | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	130,915	134,530	148,798
Consumer real estate | Acquired non-credit impaired loans | Consumer | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	520	541	1,243
Consumer real estate | Acquired non-credit impaired loans | Consumer | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,367	2,639	1,900
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Total loans	683,614	710,611	550,578
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	683,614	710,611	550,578
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	676,981	703,557	546,049
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,484	4,165	2,623
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,149	2,889	1,906
Consumer real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	48,801		58,688
Commercial and industrial | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	872,363	815,187	725,974
Commercial and industrial | Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	857,567	801,885	703,747
Commercial and industrial | Non-acquired loans | Special mention
Loans and Allowance for Loan Losses
Total loans	12,286	11,130	16,746
Commercial and industrial | Non-acquired loans | Substandard
Loans and Allowance for Loan Losses
Total loans	2,510	2,172	5,481
Commercial and industrial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	344,171	398,696	136,309
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	344,171	398,696	136,309
Commercial and industrial | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	327,409	388,342	132,474
Commercial and industrial | Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,049	9,883	3,787
Commercial and industrial | Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,713	471	48
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans			141,897
Commercial and industrial | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Total loans			136,309
Commercial and industrial | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	24,295	26,946	26,225
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	24,295	26,946	26,225
Commercial and industrial | Acquired credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	17,163	18,522	16,869
Commercial and industrial | Acquired credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,132	1,169	4,645
Commercial and industrial | Acquired credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	6,000	7,255	4,711
Other income producing property | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	198,684	193,847	182,416
Other income producing property | Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	191,856	186,158	174,321
Other income producing property | Non-acquired loans | Special mention
Loans and Allowance for Loan Losses
Total loans	5,321	6,034	6,176
Other income producing property | Non-acquired loans | Substandard
Loans and Allowance for Loan Losses
Total loans	1,507	1,655	1,919
Other income producing property | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	186,091	196,669	92,044
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	186,091	196,669	92,044
Other income producing property | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	180,825	191,229	89,596
Other income producing property | Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,369	4,547	1,741
Other income producing property | Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	897	893	707
Consumer | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	390,784	378,985	340,292
Consumer | Non-acquired loans | Consumer
Loans and Allowance for Loan Losses
Total loans	390,784	378,985	340,292
Consumer | Non-acquired loans | Consumer | Pass
Loans and Allowance for Loan Losses
Total loans	389,386	377,425	338,473
Consumer | Non-acquired loans | Consumer | Special mention
Loans and Allowance for Loan Losses
Total loans	301	313	625
Consumer | Non-acquired loans | Consumer | Substandard
Loans and Allowance for Loan Losses
Total loans	1,097	1,247	1,194
Consumer | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans	133,802	137,710	151,941
Consumer | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Total loans	48,801	51,453	58,688
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	48,801	51,453	58,688
Consumer | Acquired credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	7,247	8,001	9,704
Consumer | Acquired credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	16,329	17,214	19,124
Consumer | Acquired credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	25,225	26,238	29,860
Commercial | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	4,289,850	4,111,578	3,558,936
Commercial | Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	4,215,158	4,038,259	3,470,239
Commercial | Non-acquired loans | Special mention
Loans and Allowance for Loan Losses
Total loans	59,222	57,361	63,300
Commercial | Non-acquired loans | Substandard
Loans and Allowance for Loan Losses
Total loans	15,470	15,958	25,397
Commercial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,161,801	2,337,706	826,712
Commercial | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,119,882	2,296,812	809,042
Commercial | Acquired non-credit impaired loans | Special mention
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	31,097	34,685	15,838
Commercial | Acquired non-credit impaired loans | Substandard
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	10,822	6,209	1,832
Commercial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	349,532		141,897
Commercial | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	498,541		238,612
Other loans | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	20,795	33,690	15,623
Other loans | Non-acquired loans | Pass
Loans and Allowance for Loan Losses
Total loans	$ 20,795	33,690	$ 15,623
Other loans | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Total loans		1,289
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		1,289
Other loans | Acquired non-credit impaired loans | Pass
Loans and Allowance for Loan Losses
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		$ 1,289

Loans and Allowance for Loan 61

Loans and Allowance for Loan Losses - Aging analysis of past due loans - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Non-acquired loans
Loans and Allowance for Loan Losses
Past due	$ 15,273	$ 16,039	$ 14,313
Current	6,747,239	6,476,116	5,549,994
Total loans	6,762,512	6,492,155	5,564,307
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	5,538	6,640	5,374
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	2,652	1,863	3,501
Non-acquired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	7,083	7,536	5,438
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Past due	40,523	36,513	32,450
Current	560,835	586,917	599,446
Total loans	601,358	623,430	631,896
Acquired credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	11,448	10,810	7,848
Acquired credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	8,952	8,998	3,783
Acquired credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	20,123	16,705	20,819
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Past due	14,734	19,608	10,784
Current	3,260,204	3,488,299	1,704,858
Total loans	3,274,938	3,507,907	1,715,642
Acquired non-credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	8,743	12,364	7,441
Acquired non-credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,258	2,639	1,049
Acquired non-credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	4,733	4,605	2,294
Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Past due			1,212
Current			237,400
Total loans			238,612
Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			1,069
Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			143
Residential real estate | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Past due	16,158	19,002	14,612
Current	232,608	241,785	251,872
Total loans	248,766	260,787	266,484
Residential real estate | Acquired credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	4,497	5,895	4,226
Residential real estate | Acquired credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	3,063	4,283	1,809
Residential real estate | Acquired credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	8,598	8,824	8,577
Commercial non-owner occupied real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	1,922,065	1,839,768	1,450,542
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development
Loans and Allowance for Loan Losses
Past due	810	855	916
Current	870,331	830,020	645,628
Total loans	871,141	830,875	646,544
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	673	391	345
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	4	63	100
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	133	401	471
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Past due	816	746	1,727
Current	1,050,108	1,008,147	802,271
Total loans	1,050,924	1,008,893	803,998
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	89	297	759
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	20	398	664
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	707	51	304
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Past due	3,812	4,999	5,199
Current	42,407	44,650	52,144
Total loans	46,219	49,649	57,343
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	53	811	877
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	321	427	17
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	3,438	3,761	4,305
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Past due	17,575	9,013	7,199
Current	215,702	225,582	215,957
Total loans	233,277	234,595	223,156
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	6,043	2,519	1,482
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	5,293	3,669	1,733
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	6,239	2,825	3,984
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Past due	2,191	889
Current	347,341	402,468
Total loans	349,532	403,357
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,788	675
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	115	113
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	288	101
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Past due	376	333	26
Current	783,090	816,833	217,824
Total loans	783,466	817,166	217,850
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	242	12	26
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due		321
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	134
Commercial owner occupied real estate loan | Non-acquired loans
Loans and Allowance for Loan Losses
Past due	3,493	4,330	5,174
Current	1,293,245	1,258,446	1,194,830
Total loans	1,296,738	1,262,776	1,200,004
Commercial owner occupied real estate loan | Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	573	2,227	1,811
Commercial owner occupied real estate loan | Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,218	382	1,988
Commercial owner occupied real estate loan | Non-acquired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,702	1,721	1,375
Commercial owner occupied real estate loan | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Past due	1,142	831
Current	497,399	520,987
Total loans	498,541	521,818
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,142	642
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due		189
Consumer real estate | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	2,061,083	1,967,902	1,649,456
Consumer real estate | Non-acquired loans | Home equity loans
Loans and Allowance for Loan Losses
Past due	2,940	3,265	2,179
Current	445,642	434,377	394,627
Total loans	448,582	437,642	396,806
Consumer real estate | Non-acquired loans | Home equity loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,452	1,209	434
Consumer real estate | Non-acquired loans | Home equity loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	65	372	341
Consumer real estate | Non-acquired loans | Home equity loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,423	1,684	1,404
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Past due	3,473	3,374	2,100
Current	1,609,028	1,526,886	1,250,550
Total loans	1,612,501	1,530,260	1,252,650
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,274	1,291	1,076
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	601	140	31
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,598	1,943	993
Consumer real estate | Non-acquired loans | All Consumer
Loans and Allowance for Loan Losses
Total loans	2,472,662	2,380,577	2,005,371
Consumer real estate | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Past due	4,839	5,952	2,274
Current	290,882	314,639	184,137
Total loans	295,721	320,591	186,411
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,881	3,639	823
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	833	609	318
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	2,125	1,704	1,133
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Past due	2,166	1,744	2,213
Current	681,448	708,867	548,365
Total loans	683,614	710,611	550,578
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,304	673	1,293
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	76	204	482
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	786	867	438
Commercial and industrial | Non-acquired loans
Loans and Allowance for Loan Losses
Past due	2,358	1,449	699
Current	870,005	813,738	725,275
Total loans	872,363	815,187	725,974
Commercial and industrial | Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	983	477	366
Commercial and industrial | Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	476	57	159
Commercial and industrial | Non-acquired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	899	915	174
Commercial and industrial | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Past due	875	1,169	3,353
Current	23,420	25,777	22,872
Total loans	24,295	26,946	26,225
Commercial and industrial | Acquired credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	55	596	504
Commercial and industrial | Acquired credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due		167
Commercial and industrial | Acquired credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	820	406	2,849
Commercial and industrial | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Past due	2,112	7,417
Current	342,059	391,279
Total loans	344,171	398,696	136,309
Commercial and industrial | Acquired non-credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,998	5,996
Commercial and industrial | Acquired non-credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	27	1,278
Commercial and industrial | Acquired non-credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	87	143
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Past due			578
Current			141,319
Total loans			141,897
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			386
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			32
Commercial and industrial | Acquired non-credit impaired loans | Construction and land development | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			160
Commercial and industrial | Acquired non-credit impaired loans | Home equity loans
Loans and Allowance for Loan Losses
Past due			3,484
Current			132,825
Total loans			136,309
Commercial and industrial | Acquired non-credit impaired loans | Home equity loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due			3,484
Other income producing property | Non-acquired loans
Loans and Allowance for Loan Losses
Past due	593	676	604
Current	198,091	193,171	181,812
Total loans	198,684	193,847	182,416
Other income producing property | Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	360	223	310
Other income producing property | Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	108	255	104
Other income producing property | Non-acquired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	125	198	190
Other income producing property | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Past due	365	577	227
Current	185,726	196,092	91,817
Total loans	186,091	196,669	92,044
Other income producing property | Acquired non-credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	101	327	192
Other income producing property | Acquired non-credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	69
Other income producing property | Acquired non-credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	195	250	35
Consumer | Non-acquired loans
Loans and Allowance for Loan Losses
Past due	790	1,344	914
Current	389,994	377,641	339,378
Total loans	390,784	378,985	340,292
Consumer | Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	134	525	273
Consumer | Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	160	196	114
Consumer | Non-acquired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	496	623	527
Consumer | Non-acquired loans | Consumer
Loans and Allowance for Loan Losses
Total loans	390,784	378,985	340,292
Consumer | Acquired credit impaired loans
Loans and Allowance for Loan Losses
Past due	2,103	2,330	2,087
Current	46,698	49,123	56,601
Total loans	48,801	51,453	58,688
Consumer | Acquired credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	800	989	759
Consumer | Acquired credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	275	452	224
Consumer | Acquired credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,028	889	1,104
Consumer | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Past due	1,543	1,865	770
Current	132,259	135,845	151,171
Total loans	133,802	137,710	151,941
Consumer | Acquired non-credit impaired loans | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	287	400	168
Consumer | Acquired non-credit impaired loans | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	138	114	74
Consumer | Acquired non-credit impaired loans | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans and Allowance for Loan Losses
Past due	1,118	1,351	528
Commercial | Non-acquired loans
Loans and Allowance for Loan Losses
Total loans	4,289,850	4,111,578	3,558,936
Commercial | Acquired non-credit impaired loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	349,532		141,897
Commercial | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Total loans	498,541		238,612
Other loans | Non-acquired loans
Loans and Allowance for Loan Losses
Current	20,795	33,690	15,623
Total loans	$ 20,795	33,690	$ 15,623
Other loans | Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Current		1,289
Total loans		$ 1,289

Loans and Allowance for Loan 62

Loans and Allowance for Loan Losses - Nonaccrual loans - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	$ 14,109	$ 12,958	$ 14,340
Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	80,646	41,242	77,648
Recorded Investment With No Allowance	10,591	7,585	10,985
Gross Recorded Investment With Allowance	56,105	19,738	52,438
Total Recorded Investment	66,696	27,323	63,423
Related Allowance	1,712	1,658	1,624
Average Investment In Impaired Loans	65,061	24,267
Interest Income Recognized	728	241
Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	8,076	4,915	9,397
Commercial non-owner occupied real estate | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	1,674	2,273	2,886
Commercial non-owner occupied real estate | Non acquired non-accrual loans | Construction and land development
Loans and Allowance for Loan Losses
Nonaccrual loans	500	195	251
Commercial non-owner occupied real estate | Non acquired non-accrual loans | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Nonaccrual loans	1,174	2,078	2,635
Commercial non-owner occupied real estate | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20 | Construction and land development
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	50,399	13,674	47,553
Recorded Investment With No Allowance	476	1,344	649
Gross Recorded Investment With Allowance	45,722	7,942	42,581
Total Recorded Investment	46,198	9,286	43,230
Related Allowance	767	459	1,063
Average Investment In Impaired Loans	44,714	6,160
Interest Income Recognized	513	47
Commercial non-owner occupied real estate | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20 | Other commercial non-owner occupied real estate
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	2,916	2,393	3,106
Recorded Investment With No Allowance	659	218	860
Gross Recorded Investment With Allowance	522	557	515
Total Recorded Investment	1,181	775	1,375
Related Allowance	110	158	125
Average Investment In Impaired Loans	1,278	791
Interest Income Recognized	5	6
Commercial non-owner occupied real estate | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	426	229	108
Commercial non-owner occupied real estate | Acquired non-credit impaired non-accrual including restructured loans | Construction and land development
Loans and Allowance for Loan Losses
Nonaccrual loans	426	229	108
Commercial owner occupied real estate loan | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	1,647	2,905	1,144
Commercial owner occupied real estate loan | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	8,972	10,082	9,212
Recorded Investment With No Allowance	3,273	4,191	3,553
Gross Recorded Investment With Allowance	2,305	2,060	2,089
Total Recorded Investment	5,578	6,251	5,642
Related Allowance	63	60	64
Average Investment In Impaired Loans	5,610	6,248
Interest Income Recognized	75	76
Commercial owner occupied real estate loan | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	178	158	189
Consumer real estate | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	8,134	3,913	5,157
Consumer real estate | Non acquired non-accrual loans | Home equity loans
Loans and Allowance for Loan Losses
Nonaccrual loans	2,593	11	269
Consumer real estate | Non acquired non-accrual loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Nonaccrual loans	5,541	3,902	4,888
Consumer real estate | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20 | Home equity loans
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	3,855	2,962	3,602
Recorded Investment With No Allowance	1,105	252	896
Gross Recorded Investment With Allowance	2,063	2,180	2,115
Total Recorded Investment	3,168	2,432	3,011
Related Allowance	73	297	135
Average Investment In Impaired Loans	3,090	2,053
Interest Income Recognized	29	20
Consumer real estate | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20 | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	7,245	6,084	7,382
Recorded Investment With No Allowance	4,332	1,483	4,392
Gross Recorded Investment With Allowance	1,161	3,229	1,240
Total Recorded Investment	5,493	4,712	5,632
Related Allowance	35	68	37
Average Investment In Impaired Loans	5,563	5,192
Interest Income Recognized	43	39
Consumer real estate | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	5,358	3,237	6,745
Consumer real estate | Acquired non-credit impaired non-accrual including restructured loans | Home equity loans
Loans and Allowance for Loan Losses
Nonaccrual loans	3,931	1,784	4,589
Consumer real estate | Acquired non-credit impaired non-accrual including restructured loans | Consumer Owner Occupied Loans
Loans and Allowance for Loan Losses
Nonaccrual loans	1,427	1,453	2,156
Commercial and industrial | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	799	473	1,662
Commercial and industrial | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	2,679	2,419	2,246
Recorded Investment With No Allowance	634		635
Gross Recorded Investment With Allowance	1,043	1,270	521
Total Recorded Investment	1,677	1,270	1,156
Related Allowance	489	387	15
Average Investment In Impaired Loans	1,417	1,266
Interest Income Recognized	17	18
Commercial and industrial | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	138		133
Other income producing property | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	170	1,316	764
Other income producing property | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	3,793	3,153	3,893
Recorded Investment With No Allowance	112	97
Gross Recorded Investment With Allowance	2,974	2,311	3,138
Total Recorded Investment	3,086	2,408	3,138
Related Allowance	166	224	178
Average Investment In Impaired Loans	3,112	2,390
Interest Income Recognized	46	35
Other income producing property | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	325	83	316
Consumer | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	903	1,029	1,802
Consumer | Impaired non-acquired and acquired loans accounted under FASB ASC topic 310-20
Loans and Allowance for Loan Losses
Unpaid Contractual Principal Balance	787	475	654
Gross Recorded Investment With Allowance	315	189	239
Total Recorded Investment	315	189	239
Related Allowance	9	5	7
Average Investment In Impaired Loans	277	167
Consumer | Acquired non-credit impaired non-accrual including restructured loans
Loans and Allowance for Loan Losses
Nonaccrual loans	$ 1,651	1,208	1,906
Restructured loans | ASC Topic 31020 Loans
Loans and Allowance for Loan Losses
Number of months generally required to return to accruing status	6 months
Restructured loans | Non acquired non-accrual loans
Loans and Allowance for Loan Losses
Nonaccrual loans	$ 782	$ 1,049	$ 925

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)property	Mar. 31, 2017USD ($)	Dec. 31, 2017property
OREO
Balance at the beginning of the period	$ 11,203	$ 18,316
Additions, net	2,895	4,284
Write-downs	(777)	(936)
Sold	(2,458)	(2,207)
Balance at the end of the period	$ 11,073	20,007
Number of properties held | property	77		101
Residential real estate consumer mortgage loans in foreclosure, carrying value	$ 6,200
Southeastern Bank Financial
OREO
Acquired		$ 550
Park Sterling Corporation
OREO
Acquired	210
Residential real estate
OREO
Other Real Estate In Foreclosure	$ 2,700

Deposits - Total deposits - (De

Deposits - Total deposits - (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Deposits
Certificates of deposit	$ 1,765,576	$ 1,738,384	$ 1,060,048
Interest-bearing demand deposits	5,308,154	5,300,108	3,981,920
Non-interest bearing demand deposits	3,120,818	3,047,432	2,599,111
Savings deposits	1,464,074	1,443,918	1,388,388
Other time deposits	4,476	2,924	3,971
Total deposits	$ 11,663,098	$ 11,532,766	$ 9,033,438

Deposits - Certificates of depo

Deposits - Certificates of deposits and Scheduled maturities of time deposits - (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Deposits
Aggregate amounts of certificates of deposits in denominations of $250,000 or more	$ 340,900,000	$ 325,300,000	$ 196,900,000
Increased insurance limit on deposit accounts	250,000		250,000
Traditional, out-of-market brokered deposits	$ 35,000,000	$ 43,600,000	$ 55,200,000

Retirement Plans - Non-contribu

Retirement Plans - Non-contributory defined benefit pension plan - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Components of net periodic pension cost and other amounts recognized in other comprehensive income
Interest cost	$ 270	$ 281
Service cost	19	31
Expected return on plan assets	(582)	(553)
Recognized net actuarial loss	194	188
Net periodic pension expense	$ (99)	$ (53)
Employee hired on or after January 1, 2006 | Maximum
Retirement Plans
Requisite age of employees for receiving retirement benefits under the new benefit formula	45 years
Defined benefit plan requisite service period under new benefit formula	5 years
Non-contributory defined benefit pension plan | Employees hired on or before December 31, 2005 | Minimum
Retirement Plans
Requisite age of employees for receiving retirement benefits under the plan	21 years

Retirement Plans - Safe Harbor

Retirement Plans - Safe Harbor plan - (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Employees' savings plan
Matching contribution by the company (as a percent)			100.00%	100.00%
Discretionary matching contribution	1		2	1
Expenses recognized under 401(K) plan	$ 2.4	$ 1.6
Minimum
Employees' savings plan
Age of employees to be eligible to participate in the defined contribution plan	21 years
Percentage of annual base compensation that participants may elect to contribute	1.00%
Maximum
Employees' savings plan
Percentage of annual base compensation that participants may elect to contribute	50.00%
Percentage of employees salary for which the company contributes a matching contribution			4.00%	5.00%

Earnings Per Share - Computatio

Earnings Per Share - Computation of basic and diluted EPS - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic earnings per common share:
Net income	$ 42,326	$ 18,264
Weighted Average Number of Shares Outstanding, Basic	36,646	28,892
Basic earnings per common share (in dollars per share)	$ 1.15	$ 0.63
Diluted earnings per share:
Net income	$ 42,326	$ 18,264
Weighted Average Number of Shares Outstanding, Basic	36,646	28,892
Effect of dilutive securities (in shares)	253	267
Weighted-average dilutive shares	36,899	29,159
Diluted earnings per common share (in dollars per share)	$ 1.15	$ 0.63

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of diluted EPS under Treasury method - (Details) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share
Number of shares	61,272	34,712
Range of exercise prices, low end of range (in dollars per share)	$ 91.05	$ 69.48
Range of exercise prices, high end of range (in dollars per share)	$ 91.35	$ 91.35

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Options - (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 27, 2012	Mar. 31, 2018
Aggregate Intrinsic Value
Outstanding at the end of the period		$ 7,194
Exercisable at the end of the period		$ 6,767
Stock Options
Number of shares
Outstanding at the beginning of the period (in shares)		218,689
Granted (in shares)		34,407
Exercised (in shares)		(2,240)
Forfeited (in shares)		(5,806)
Outstanding at the end of the period (in shares)		245,050
Exercisable at the end of the period (in shares)		171,299
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)		$ 52.75
Granted (in dollars per share)		91.05
Exercised (in dollars per share)		29.95
Forfeited (in dollars per share)		91.35
Outstanding at the end of the period (in dollars per share)		57.42
Exercisable at the end of the period (in dollars per share)		46.05
Weighted-average fair value of options granted during the year (in dollars per share)		$ 28.01
Weighted-Average Remaining Contractual Life
Outstanding at the end of the period		5 years 9 months 11 days
Exercisable at the end of the period		4 months 13 days
2012 plan
Share-Based Compensation
Number of shares registered under the 2012 plan		1,684,000
2012 plan | Restricted Stock. | Maximum
Share-Based Compensation
Number of shares registered under the 2012 plan		817,476
2004 plan
Number of shares
Granted (in shares)	0
Plan 2004 And 2012 | Incentive stock options
Share-Based Compensation
Vesting percentage		25.00%
Expiration period		10 years
Plan 2004 And 2012 | Incentive stock options | Maximum
Share-Based Compensation
Vesting period		4 years

Share-Based Compensation - Weig

Share-Based Compensation - Weighted average assumptions used in valuing options - (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stock Options
Weighted-average assumptions
Dividend yield (as a percent)	1.46%	1.40%
Expected life	8 years 6 months	8 years 6 months
Expected volatility (as a percent)	28.00%	37.20%
Risk-free interest rate (as a percent)	2.54%	2.43%
Additional disclosures
Total unrecognized compensation cost related to non vested stock option grants	$ 2,000,000
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 10 months 13 days
Total fair value of shares vested during the period	$ 700,000
Restricted Stock.
Additional disclosures
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 1 month 2 days
Restricted Stock Activity and RSUs
Nonvested at the beginning of the period (in shares)	142,692
Granted (in shares)	1,169
Vested (in shares)	(16,442)
Nonvested at the end of the period (in shares)	127,419
Weighted-Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 59.66
Granted (in dollars per share)	88.04
Vested (in dollars per share)	63.90
Nonvested at the end of the period (in dollars per share)	$ 59.37
Additional disclosures
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted	$ 3,900,000
Total fair value of shares vested during the period	$ 1,200,000
Restricted Stock. | Employees | Minimum
Additional disclosures
Vesting period	4 years
Restricted Stock. | Non-employee directors | Maximum
Additional disclosures
Vesting period	12 months
Restricted Stock Units
Additional disclosures
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 3 months 15 days
Restricted Stock Activity and RSUs
Nonvested at the beginning of the period (in shares)	140,036
Granted (in shares)	96,363
Forfeited (in shares)	(3,213)
Nonvested at the end of the period (in shares)	233,186
Weighted-Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 78.49
Granted (in dollars per share)	86.26
Forfeited (in dollars per share)	89.40
Nonvested at the end of the period (in dollars per share)	$ 81.55
Additional disclosures
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted	$ 11,700,000
Total fair value of shares vested during the period	$ 2,600,000
Target RSU award level (as a percent)	86.00%
Employee Stock Purchase Plan
Number Of Stock Issued Pursuant To Restricted Stock Units	38,365
Number of nonvested restricted stock issued	15,836
Performance based restricted stock units
Additional disclosures
Performance period	3 years
Other Performance based restricted stock units
Additional disclosures
Performance period	1 year
Timed based restricted stock units
Additional disclosures
Performance period	4 years
Discretionary cliff vesting restricted stock units
Additional disclosures
Performance period	4 years

Commitments and Contingent Li72

Commitments and Contingent Liabilities (Details) $ in Billions	Mar. 31, 2018USD ($)
Commitments and Contingent Liabilities
Commitments to extend credit and standby letters of credit	$ 3

Fair Value - Assets and liabili

Fair Value - Assets and liabilities measured at fair value on a recurring basis - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Assets
Derivative financial instruments	$ 5,700
Securities available for sale	1,640,837	$ 1,379,788	$ 1,648,193
Liabilities
Derivative financial instruments	5,900
Government-sponsored entities debt
Assets
Securities available for sale	89,746	93,299	85,509
State and municipal obligations
Assets
Securities available for sale	225,686	200,284	220,437
Corporate securities
Assets
Securities available for sale		2,766	1,560
Significant Unobservable Inputs (Level 3)
Assets
Mortgage servicing rights	34,196	30,063	31,119
Changes in fair value of assets
Changes in hierarchy classifications of Level 3 liabilities	0
Recurring basis
Assets
Derivative financial instruments	7,420	2,413	3,306
Loans held for sale	42,690	46,988	70,890
Securities available for sale	1,640,837	1,379,788	1,648,193
Mortgage servicing rights	34,196	30,063	31,119
Fair value of Assets, Total	1,725,143	1,459,252	1,753,508
Liabilities
Derivative financial instruments	6,094	934	3,248
Recurring basis | Government-sponsored entities debt
Assets
Securities available for sale	89,746	93,299	85,509
Recurring basis | State and municipal obligations
Assets
Securities available for sale	225,686	200,284	220,437
Recurring basis | Mortgage-backed securities
Assets
Securities available for sale	1,325,405	1,083,439	1,340,687
Recurring basis | Corporate securities
Assets
Securities available for sale		2,766	1,560
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1)
Assets
Securities available for sale		2,766
Fair value of Assets, Total		2,766
Recurring basis | Quoted Prices In Active Markets for Identical Assets (Level 1) | Corporate securities
Assets
Securities available for sale		2,766
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets
Derivative financial instruments	7,420	2,413	3,306
Loans held for sale	42,690	46,988	70,890
Securities available for sale	1,640,837	1,377,022	1,648,193
Fair value of Assets, Total	1,690,947	1,426,423	1,722,389
Liabilities
Derivative financial instruments	6,094	934	3,248
Recurring basis | Significant Other Observable Inputs (Level 2) | Government-sponsored entities debt
Assets
Securities available for sale	89,746	93,299	85,509
Recurring basis | Significant Other Observable Inputs (Level 2) | State and municipal obligations
Assets
Securities available for sale	225,686	200,284	220,437
Recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Assets
Securities available for sale	1,325,405	1,083,439	1,340,687
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate securities
Assets
Securities available for sale			1,560
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets
Mortgage servicing rights	34,196	30,063	31,119
Fair value of Assets, Total	34,196	30,063	$ 31,119
Changes in fair value of assets
Fair value of assets at the beginning of the period	31,119	29,037
Servicing assets that resulted from transfers of financial assets	1,490	1,385
Changes in fair value assets due to valuation inputs or assumptions	2,516	444
Changes in fair value assets due to increased principal paydowns	929	803
Fair value of assets at the end of the period	34,196	30,063
Unrealized losses included in accumulated other comprehensive income related to Level 3 financial assets and liabilities	$ 0	$ 0

Fair Value - Assets and liabi74

Fair Value - Assets and liabilities measured at fair value on a nonrecurring basis - (Details) - Nonrecurring basis - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
OREO
Fair Value
Other Real Estate	$ 11,073	$ 20,007	$ 11,203
Non-acquired Credit Impaired loans
Fair Value
Other Real Estate	2,118	2,290	10,495
Significant Unobservable Inputs (Level 3) | OREO
Fair Value
Other Real Estate	11,073	20,007	11,203
Significant Unobservable Inputs (Level 3) | Non-acquired Credit Impaired loans
Fair Value
Other Real Estate	$ 2,118	$ 2,290	$ 10,495
Significant Unobservable Inputs (Level 3) | Discounted appraisals | Impaired loans
Quantitative Information about Level 3 Fair Value Measurements
Collateral discounts (as a percent)	3.00%	6.00%	3.00%
Significant Unobservable Inputs (Level 3) | Discounted appraisals | OREO
Quantitative Information about Level 3 Fair Value Measurements
Collateral discounts and estimated costs to sell (as a percent)	28.00%	20.00%	21.00%

Fair Value - Estimated fair val

Fair Value - Estimated fair value and related carrying amount, of the Company’s financial instruments - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financial assets:
Loans held for sale	$ 42,690	$ 46,988	$ 70,890
Financial liabilities:
Federal Funds Purchased and Securities Sold under Agreements to Repurchase.	357,574	352,431	286,857
Increase (Decrease) in Loans Held-for-sale	10,461	176,946
Other borrowings	215,589	107,988	216,385
Carrying Amount
Financial assets:
Cash and cash equivalents	644,504	663,126	377,627
Investment securities	1,665,590	1,400,609	1,673,769
Loans held for sale	42,690	46,988	70,890
Loans, net of allowance for loan losses	10,589,521	7,868,840	10,575,417
Interest Receivable	31,175	22,823	32,727
Mortgage servicing rights	34,196	30,063	31,119
Interest rate swap - non-designated hedge	5,755	133	2,367
Other derivative financial instruments (Mortgage - banking related)	1,665	2,280	939
Financial liabilities:
Deposits	11,663,098	9,033,438	11,532,766
Federal Funds Purchased and Securities Sold under Agreements to Repurchase.	357,574	352,431	286,857
Other borrowings	215,589	107,988	216,385
Interest Payable	3,563	1,452	2,789
Interest rate swap - non-designated hedge	5,932	426	2,750
Interest rate swap - cash flow hedge	162	121	246
Other derivative financial instruments (Mortgage banking related)		387	252
Fair Value.
Financial assets:
Cash and cash equivalents	644,504	663,126	377,627
Investment securities	1,665,600	1,400,731	1,673,796
Loans held for sale	42,690	46,988	70,890
Loans, net of allowance for loan losses	10,419,134	7,936,291	10,724,264
Interest Receivable	31,175	22,823	32,727
Mortgage servicing rights	34,196	30,063	31,119
Interest rate swap - non-designated hedge	5,755	133	2,367
Other derivative financial instruments (Mortgage - banking related)	1,665	2,280	939
Financial liabilities:
Deposits	10,780,965	8,462,144	10,796,380
Federal Funds Purchased and Securities Sold under Agreements to Repurchase.	357,574	352,431	286,857
Other borrowings	219,037	109,470	219,421
Interest Payable	3,563	1,452	2,789
Interest rate swap - non-designated hedge	5,932	426	2,750
Interest rate swap - cash flow hedge	162	121	246
Other derivative financial instruments (Mortgage banking related)		387	252
Commitments to extend credit | Fair Value.
Financial liabilities:
Commitments to extend credit	(48,841)		41,319
Standby letters of credit and financial guarantees | Fair Value.
Financial liabilities:
Commitments to extend credit		16,756
Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	644,504	663,126	377,627
Investment securities	23,479	16,267	20,530
Significant Other Observable Inputs (Level 2)
Financial assets:
Investment securities	1,642,121	1,384,464	1,653,266
Loans held for sale	42,690	46,988	70,890
Interest Receivable	6,661	5,558	7,051
Interest rate swap - non-designated hedge	5,755	133	2,367
Other derivative financial instruments (Mortgage - banking related)	1,665	2,280	939
Financial liabilities:
Deposits	10,780,965	8,462,144	10,796,380
Federal Funds Purchased and Securities Sold under Agreements to Repurchase.	357,574	352,431	286,857
Other borrowings	219,037	109,470	219,421
Interest Payable	3,563	1,452	2,789
Interest rate swap - non-designated hedge	5,932	426	2,750
Interest rate swap - cash flow hedge	162	121	246
Other derivative financial instruments (Mortgage banking related)		387	252
Significant Other Observable Inputs (Level 2) | Commitments to extend credit
Financial liabilities:
Commitments to extend credit	(48,841)		41,319
Significant Other Observable Inputs (Level 2) | Standby letters of credit and financial guarantees
Financial liabilities:
Commitments to extend credit		16,756
Significant Unobservable Inputs (Level 3)
Financial assets:
Loans, net of allowance for loan losses	10,419,134	7,936,291	10,724,264
Interest Receivable	24,514	17,265	25,676
Mortgage servicing rights	34,196	30,063	31,119
Recurring basis
Financial assets:
Loans held for sale	42,690	46,988	70,890
Mortgage servicing rights	34,196	30,063	31,119
Recurring basis | Significant Other Observable Inputs (Level 2)
Financial assets:
Loans held for sale	42,690	46,988	70,890
Recurring basis | Significant Unobservable Inputs (Level 3)
Financial assets:
Mortgage servicing rights	$ 34,196	$ 30,063	$ 31,119

Accumulated Other Comprehensi76

Accumulated Other Comprehensive Income (Loss) - Changes in components of AOCI - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	$ (10,427)
Net comprehensive income (loss)	(16,976)	$ 3,327
Balance at the end of the period	(30,350)	(4,884)
Amortization of defined benefit pension
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(5,998)	(6,195)
Amounts reclassified from accumulated other comprehensive income (loss)	151	117
Net comprehensive income (loss)	151	117
Balance at the end of the period	(7,607)	(6,078)
Amortization of defined benefit pension | ASU 2018- 02
Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,760)
Unrealized gains and losses on securities
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(4,278)	(1,708)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(17,192)	3,166
Net comprehensive income (loss)	(17,192)	3,166
Balance at the end of the period	(22,617)	1,458
Unrealized gains and losses on securities | ASU 2018- 02
Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income (loss)	(1,147)
Gains on sales of available for sale securities
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(151)	(308)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	28	(24)
Amounts reclassified from accumulated other comprehensive income (loss)	37	68
Net comprehensive income (loss)	65	44
Balance at the end of the period	(126)	(264)
Gains on sales of available for sale securities | ASU 2018- 02
Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income (loss)	(40)
Accumulated Other Comprehensive Income (Loss).
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period	(10,427)	(8,211)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(17,164)	3,142
Amounts reclassified from accumulated other comprehensive income (loss)	188	185
Net comprehensive income (loss)	(16,976)	3,327
Balance at the end of the period	(30,350)	$ (4,884)
Accumulated Other Comprehensive Income (Loss). | ASU 2018- 02
Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from accumulated other comprehensive income (loss)	$ (2,947)

Accumulated Other Comprehensi77

Accumulated Other Comprehensive Income (Loss) - Reclassifications out of AOCI - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassifications out of accumulated other comprehensive income, net of tax
Interest expense	$ (9,075)	$ (3,624)
Other noninterest income	2,575	1,674
Provision for income taxes	(11,285)	(7,103)
Net income	42,326	18,264
Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive income, net of tax
Net income	188	185
Gains on sales of available for sale securities | Amount Reclassified from Accumulated Other Comprehensive Loss | Interest rate contracts
Reclassifications out of accumulated other comprehensive income, net of tax
Interest expense	47	110
Provision for income taxes	(10)	(42)
Net income	37	68
Amortization of defined benefit pension | Amount Reclassified from Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive income, net of tax
Salaries and employee benefits	194	188
Provision for income taxes	(43)	(71)
Net income	$ 151	$ 117

Derivative Financial Instrume78

Derivative Financial Instruments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2009
Derivative Financial Instruments
Notional amount	$ 742,778,000	$ 247,615,000
Estimated fair value gain	7,420,000	2,026,000
Estimated fair value loss	6,094,000	547,000
Gain or loss recorded	$ 0	0
Variable rate basis, variable rate receivable on notional amount	three-month LIBOR
Estimated gain (loss) on fair value of open contracts related to mortgage servicing rights	$ 390,000
After-tax unrealized gain on cash flow hedge in other comprehensive income	65,000	44,000
Cash flow hedge liability	162,000	426,000
Ineffectiveness in the cash flow hedge	0	0
Collateral provided	300,000	550,000
Interest Rate Derivative Assets, at Fair Value	5,700,000
Interest Rate Derivative Liabilities, at Fair Value	5,900,000
Interest Rate Derivatives, at Fair Value, Net	156,000	12,000
Mortgage loan pipeline
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	92,647,000	117,666,000	$ 71,477,000
Expected closures
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	69,485,000	88,250,000	53,608,000
Interest rate contracts
Derivative Financial Instruments
Notional amount	564,100,000
Interest rate contracts | LIBOR
Derivative Financial Instruments
Notional amount	$ 8,000,000
Interest rate contracts | Cash flow hedge
Derivative Financial Instruments
Notional amount				$ 8,000,000
Interest rate contracts | Cash flow hedge | LIBOR
Derivative Financial Instruments
Fixed rate payable on notional amount (as a percent)	4.06%
Fixed interest rate on interest rate swap (as a percent)	4.06%
Mortgage servicing rights hedging | Non-designated hedges
Derivative Financial Instruments
Notional amount	$ 69,000,000	98,000,000
Mortgage servicing rights hedging | Non-designated hedges | Other Assets
Derivative Financial Instruments
Notional amount	69,000,000	98,000,000
Estimated fair value gain	390,000	214,000
Mortgage loan pipeline commitments
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	1,190,000	2,066,000	920,000
Forward sales commitments
Obligation under forward commitments, the fair value of those obligations along with the fair value of derivative instruments associated with forward commitments
Obligation	98,860,000	114,079,000	89,317,000
Fair value of forward commitments	(85,000)	387,000	$ (19,000)
Forward sales commitments | Non-designated hedges | Other Assets
Derivative Financial Instruments
Notional amount	98,860,000	114,079,000
Estimated fair value gain	1,275,000	1,679,000
Interest rate swap | Cash flow hedge | Other Liabilities | Counterparty
Derivative Financial Instruments
Notional amount	8,000,000	8,000,000
Estimated fair value loss	162,000	426,000
Interest rate swap | Fair Value Hedging | Other Liabilities | Counterparty
Derivative Financial Instruments
Notional amount	2,824,000
Estimated fair value loss	21,000
Interest rate swap | Non-designated hedges | Other Assets and Other Liabilities | Borrower
Derivative Financial Instruments
Notional amount	282,047,000	13,768,000
Estimated fair value gain	146,000	133,000
Estimated fair value loss	5,908,000
Interest rate swap | Non-designated hedges | Other Assets and Other Liabilities | Counterparty
Derivative Financial Instruments
Notional amount	282,047,000	13,768,000
Estimated fair value gain	5,609,000
Estimated fair value loss	$ 3,000	$ 121,000

Capital Ratios (Details)

Capital Ratios (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Common equity Tier 1 to risk-weighted assets
Actual, Capital Amount		$ 1,295,729	$ 1,273,547	$ 959,802
Actual, Ratio (as a percent)		11.85%	11.59%	11.90%
Minimum capital required, Ratio (as a percent)		4.50%
Required to be considered well capitalized, Capital Amount		$ 710,909	$ 714,221	$ 524,356
Required to be considered well capitalized, Ratio (as a percent)		6.50%	6.50%	6.50%
Tier I capital to risk-weighted assets
Actual, Capital Amount		$ 1,406,832	$ 1,384,433	$ 1,030,559
Actual, Ratio (as a percent)		12.86%	12.60%	12.77%
Minimum capital required, Ratio (as a percent)		6.00%	4.00%
Required to be considered well capitalized, Capital Amount		$ 874,964	$ 879,042	$ 645,362
Required to be considered well capitalized, Ratio (as a percent)		8.00%	8.00%	8.00%
Total capital to risk-weighted assets
Actual, Capital Amount		$ 1,456,453	$ 1,432,843	$ 1,074,107
Actual, Ratio (as a percent)		13.32%	13.04%	13.31%
Minimum capital required, Ratio (as a percent)		8.00%
Required to be considered well capitalized, Capital Amount		$ 1,093,706	$ 1,098,802	$ 806,702
Required to be considered well capitalized, Ratio (as a percent)		10.00%	10.00%	10.00%
Tier I capital to average assets (leverage ratio)
Actual, Capital Amount		$ 1,406,832	$ 1,384,433	$ 1,030,559
Actual, Ratio (as a percent)		10.50%	10.36%	10.05%
Minimum capital required, Ratio (as a percent)		4.00%
Required to be considered well capitalized, Capital Amount		$ 669,654	$ 668,075	$ 512,567
Required to be considered well capitalized, Ratio (as a percent)		5.00%	5.00%	5.00%
Phase-In Schedule
Common equity Tier 1 to risk-weighted assets
Minimum capital required, Capital Amount		$ 697,237	$ 631,811	$ 463,854
Minimum capital required, Ratio (as a percent)		6.38%	5.75%	5.75%
Tier I capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 861,293	$ 796,632	$ 584,859
Minimum capital required, Ratio (as a percent)		7.88%	7.25%	7.25%
Total capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 1,080,034	$ 1,016,392	$ 746,199
Minimum capital required, Ratio (as a percent)		9.88%	9.25%	9.25%
Tier I capital to average assets (leverage ratio)
Minimum capital required, Capital Amount		$ 535,724	$ 534,460	$ 410,054
Minimum capital required, Ratio (as a percent)		4.00%	4.00%	4.00%
Fully Phased-In
Common equity Tier 1 to risk-weighted assets
Minimum capital required, Capital Amount		$ 765,594	$ 769,162	$ 564,691
Minimum capital required, Ratio (as a percent)		7.00%	7.00%	7.00%
Tier I capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 929,650	$ 933,982	$ 685,697
Minimum capital required, Ratio (as a percent)		8.50%	8.50%	8.50%
Total capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 1,148,391	$ 1,153,742	$ 847,037
Minimum capital required, Ratio (as a percent)		10.50%	10.50%	10.50%
Tier I capital to average assets (leverage ratio)
Minimum capital required, Capital Amount		$ 535,724	$ 534,460	$ 410,054
Minimum capital required, Ratio (as a percent)		4.00%	4.00%	4.00%
Forecast
Capital ratios
Capital conversion buffer common equity Tier 1 of risk-weighted assets (as a percent)	2.50%
South State Bank (the Bank)
Common equity Tier 1 to risk-weighted assets
Actual, Capital Amount		$ 1,385,289	$ 1,360,603	$ 998,061
Actual, Ratio (as a percent)		12.67%	12.38%	12.37%
Required to be considered well capitalized, Capital Amount		$ 710,925	$ 714,143	$ 524,259
Required to be considered well capitalized, Ratio (as a percent)		6.50%	6.50%	6.50%
Tier I capital to risk-weighted assets
Actual, Capital Amount		$ 1,385,289	$ 1,360,603	$ 998,061
Actual, Ratio (as a percent)		12.67%	12.38%	12.37%
Required to be considered well capitalized, Capital Amount		$ 874,985	$ 878,945	$ 645,241
Required to be considered well capitalized, Ratio (as a percent)		8.00%	8.00%	8.00%
Total capital to risk-weighted assets
Actual, Capital Amount		$ 1,434,911	$ 1,409,014	$ 1,041,277
Actual, Ratio (as a percent)		13.12%	12.82%	12.91%
Required to be considered well capitalized, Capital Amount		$ 1,093,731	$ 1,098,681	$ 806,552
Required to be considered well capitalized, Ratio (as a percent)		10.00%	10.00%	10.00%
Tier I capital to average assets (leverage ratio)
Actual, Capital Amount		$ 1,385,289	$ 1,360,603	$ 998,061
Actual, Ratio (as a percent)		10.35%	10.18%	9.75%
Required to be considered well capitalized, Capital Amount		$ 669,402	$ 667,987	$ 511,959
Required to be considered well capitalized, Ratio (as a percent)		5.00%	5.00%	5.00%
South State Bank (the Bank) | Phase-In Schedule
Common equity Tier 1 to risk-weighted assets
Minimum capital required, Capital Amount		$ 697,253	$ 631,741	$ 463,767
Minimum capital required, Ratio (as a percent)		6.38%	5.75%	5.75%
Tier I capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 861,313	$ 796,544	$ 584,750
Minimum capital required, Ratio (as a percent)		7.88%	7.25%	7.25%
Total capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 1,080,059	$ 1,016,280	$ 746,060
Minimum capital required, Ratio (as a percent)		9.88%	9.25%	9.25%
Tier I capital to average assets (leverage ratio)
Minimum capital required, Capital Amount		$ 535,522	$ 534,390	$ 409,567
Minimum capital required, Ratio (as a percent)		4.00%	4.00%	4.00%
South State Bank (the Bank) | Fully Phased-In
Common equity Tier 1 to risk-weighted assets
Minimum capital required, Capital Amount		$ 765,612	$ 769,077	$ 564,586
Minimum capital required, Ratio (as a percent)		7.00%	7.00%	7.00%
Tier I capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 929,671	$ 933,879	$ 685,569
Minimum capital required, Ratio (as a percent)		8.50%	8.50%	8.50%
Total capital to risk-weighted assets
Minimum capital required, Capital Amount		$ 1,148,417	$ 1,153,615	$ 846,879
Minimum capital required, Ratio (as a percent)		10.50%	10.50%	10.50%
Tier I capital to average assets (leverage ratio)
Minimum capital required, Capital Amount		$ 535,522	$ 534,390	$ 409,567
Minimum capital required, Ratio (as a percent)		4.00%	4.00%	4.00%

Goodwill and Other Intangible80

Goodwill and Other Intangible Assets - Summary of changes - (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Mar. 31, 2017	Mar. 31, 2018	Nov. 30, 2017	Jan. 03, 2017
Goodwill
Goodwill, Ending Balance	$ 999,586	$ 595,711
Southeastern Bank Financial
Goodwill
Additions, Goodwill from acquisition or merger		$ 258,300
Core deposit intangible					$ 18,120
Park Sterling Corporation
Goodwill
Additions, Goodwill from acquisition or merger	$ 403,000
Core deposit intangible			$ 26,200	$ 26,175

Goodwill and Other Intangible81

Goodwill and Other Intangible Assets - Summary of gross carrying amounts - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Other intangible assets
Gross carrying amount	$ 126,449	$ 100,274	$ 126,449
Accumulated amortization	(56,073)	(44,813)	(52,660)
Net carrying amount	70,376	55,461	$ 73,789
Amortization expense	3,413	$ 2,507
Estimated amortization expense for other intangibles for each of the next five quarters
June 30, 2018	3,401
September 30, 2018	3,400
December 31, 2018	3,400
March 31, 2019	3,156
June 30, 2019	3,144
Thereafter	$ 53,875
Minimum
Other intangible assets
Estimated useful lives	2 years
Maximum
Other intangible assets
Estimated useful lives	15 years

Loan Servicing, Mortgage Orig82

Loan Servicing, Mortgage Origination, and Loans Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Loans held for sale, loan servicing and mortgage origination
Mortgage servicing rights				$ 34,196	$ 31,119	$ 30,063
MSRs
Changes in the fair value of MSRs and its offsetting hedge.
Increase (decrease) in fair value of MSRs	$ 2,516	$ 444
Decay of MSRs	(929)	(803)
Gains (losses) related to derivatives	(1,554)	266
Net effect on Statements of Income	$ 33	$ (93)
Characteristics and sensitivity analysis of the MSR
Residential Mortgages Serviced for Others Percentage				100.00%	100.00%	100.00%
Weighted average life	8 years 5 months 12 days	7 years 8 months 5 days	7 years 7 months 21 days
Constant prepayment rate (as a percent)	6.30%	7.80%	7.70%
Weighted average discount rate (as a percent)	9.60%	9.80%	9.60%
Effect on fair value due to change in interest rates:
25 basis point increase				$ 1,025	$ 1,485	$ 1,375
50 basis point increase				1,791	2,664	2,431
25 basis point decrease				(1,439)	(1,850)	(1,746)
50 basis point decrease				(3,189)	$ (4,014)	(3,774)
Custodial escrow balances maintained in connection with the loan servicing				$ 20,900		$ 18,200
Fixed-rate mortgage loans
Characteristics and sensitivity analysis of the MSR
Residential Mortgages Serviced for Others Percentage				99.70%	99.70%	99.60%
Adjustable-rate mortgage loans
Characteristics and sensitivity analysis of the MSR
Residential Mortgages Serviced for Others Percentage				0.30%	0.30%	0.40%
First Financial Holdings, Inc. ("First Financial")
Loans held for sale, loan servicing and mortgage origination
Residential mortgages serviced for others				$ 3,000,000	$ 2,900,000	$ 2,800,000
Contractually specified servicing fees earned	$ 1,900	$ 1,800
First Financial Holdings, Inc. ("First Financial") | MSRs
Loans held for sale, loan servicing and mortgage origination
Mortgage servicing rights	31,100	30,100	$ 31,100	$ 34,200	$ 31,100	$ 30,100
Analysis of the activity in the MSRs
Balance at beginning of the period	31,100
Balance at end of period	$ 34,200	$ 30,100	$ 31,100

Loan Servicing, Mortgage Orig83

Loan Servicing, Mortgage Origination, and Loans Held for Sale - Mandatory cash forwards - (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loan sales	$ 154,900	$ 177,700
Loan securitizations and loan sales	$ 118,400	$ 120,600
Percentage of loan securitizations and loan sales	76.50%	67.90%
Loans held for sale	$ 42,690	$ 46,988	$ 70,890
Residential mortgage loans to be sold in secondary market
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Residential mortgage loans held for sale	42,700	47,000	45,500
Loans Held-for-sale, Mortgages	$ 42,700	$ 47,000	$ 45,500
Residential mortgage loans awaiting sale in secondary market | Minimum
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loans held for sale, settlement period	15 days
Residential mortgage loans awaiting sale in secondary market | Maximum
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loans held for sale, settlement period	45 days
Park Sterling Corporation
Mortgage loan securitizations, mandatory cash forwards, and whole loan sales
Loans held for sale, commercial	$ 25,400

Investments in Qualified Affo84

Investments in Qualified Affordable Housing Projects (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investment In Qualified Affordable Housing Projects.
Tax Credits and Benefits	$ 1,200,000	$ 771,000,000
Amortization		587,000,000,000
Share of book losses	1,000,000
Carrying value	38,700,000	26,200,000
Original Investment Value	49,700,000	49,700,000
Funding obligation	17,900,000	$ 9,400,000
Amount repaid	$ 0

Repurchase Agreements (Details)

Repurchase Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Secured Debt, Repurchase Agreements
Carrying amount of securities sold under repurchase agreements with customers	$ 269.5	$ 211.1	$ 272.4
Carrying amount of the securities pledged to collateralize repurchase agreements	$ 269.5	$ 211.1	$ 272.4