United Community Banks (UCB) 10-K 27 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 31, 2017	Jun. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	UNITED COMMUNITY BANKS INC
Entity Central Index Key	857,855
Trading Symbol	ucbi
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		70,960,282
Entity Public Float			$ 1,261,158,381
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Amendment Flag	false
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest revenue:
Loans, including fees	$ 268,382	$ 223,256	$ 196,279
Investment securities:
Taxable	63,413	51,143	47,755
Tax exempt	614	705	738
Deposits in banks and short-term investments	2,611	3,428	3,660
Total interest revenue	335,020	278,532	248,432
Deposits:
NOW	1,903	1,505	1,651
Money market	4,982	3,466	3,060
Savings	135	98	81
Time	3,136	3,756	7,133
Total deposit interest expense	10,156	8,825	11,925
Short-term borrowings	399	364	2,160
Federal Home Loan Bank advances	3,676	1,743	912
Long-term debt	11,005	10,177	10,554
Total interest expense	25,236	21,109	25,551
Net interest revenue	309,784	257,423	222,881
(Release of) provision for credit losses	(800)	3,700	8,500
Net interest revenue after provision for credit losses	310,584	253,723	214,381
Fee revenue:
Service charges and fees	42,113	36,825	33,073
Mortgage loan and other related fees	20,292	13,592	7,520
Brokerage fees	4,280	5,041	4,807
Gains from sales of government guaranteed loans	9,545	6,276	2,615
Securities gains, net	982	2,255	4,871
Losses on prepayment of borrowings		(1,294)	(4,446)
Other	16,485	9,834	7,114
Total fee revenue	93,697	72,529	55,554
Total revenue	404,281	326,252	269,935
Operating expenses:
Salaries and employee benefits	138,789	116,688	100,941
Occupancy	19,603	15,372	13,513
Communications and equipment	18,355	15,273	12,523
FDIC assessments and other regulatory charges	5,866	5,106	4,792
Professional fees	11,822	10,175	7,907
Postage, printing and supplies	5,382	4,273	3,542
Advertising and public relations	4,426	3,667	3,461
Amortization of intangibles	4,182	2,444	1,348
Foreclosed property	1,051	32	634
Merger-related and other charges	8,122	17,995
Other	23,691	20,213	14,204
Total operating expenses	241,289	211,238	162,865
Income before income taxes	162,992	115,014	107,070
Income tax expense	62,336	43,436	39,450
Net income	100,656	71,578	67,620
Preferred stock dividends	21	67	439
Net income available to common shareholders	$ 100,635	$ 71,511	$ 67,181
Income per common share:
Basic (in dollars per share)	$ 1.40	$ 1.09	$ 1.11
Diluted (in dollars per share)	$ 1.40	$ 1.09	$ 1.11
Weighted average common shares outstanding:
Basic (in shares)	71,910	65,488	60,588
Diluted (in shares)	71,915	65,492	60,590

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statement of Comprehensive Income (Loss) [Abstract]
Net income, Before-tax Amount	$ 162,992	$ 115,014	$ 107,070
Net income, Tax (Expense) Benefit	(62,336)	(43,436)	(39,450)
Net income, Net of Tax Amount	100,656	71,578	67,620
Unrealized (losses) gains on available for sale securities:
Unrealized holding (losses) gains arising during period, Before-tax Amount	(3,609)	(10,779)	12,550
Unrealized holding (losses) gains arising during period, Tax (Expense) Benefit	1,274	4,004	(4,676)
Unrealized holding (losses) gains arising during period, Net of Tax Amount	(2,335)	(6,775)	7,874
Reclassification adjustment for gains included in net income, Before-tax Amount	(982)	(2,255)	(4,871)
Reclassification adjustment for gains included in net income, Tax (Expense) Benefit	371	862	1,902
Reclassification adjustment for gains included in net income, Net of Tax Amount	(611)	(1,393)	(2,969)
Net unrealized gains (losses), Before-tax Amount	(4,591)	(13,034)	7,679
Net unrealized gains (losses), Tax (Expense) Benefit	1,645	4,866	(2,774)
Net unrealized gains (losses), Net of Tax Amount	(2,946)	(8,168)	4,905
Amortization of losses included in net income on available-for-sale securities transferred to held to maturity, Before-tax Amount	1,759	1,702	1,656
Amortization of losses included in net income on available-for-sale securities transferred to held to maturity, Tax (Expense) Benefit	(662)	(638)	(622)
Amortization of losses included in net income on available-for-sale securities transferred to held to maturity, Net of Tax Amount	1,097	1,064	1,034
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Before-tax Amount	1,891	1,936	2,010
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Tax (Expense) Benefit	(736)	(753)	(782)
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Net of Tax Amount	1,155	1,183	1,228
Unrealized losses on derivative financial instruments accounted for as cash flow hedges, Before-tax Amount		(471)	(8,437)
unrealized losses on derivative financial instruments accounted for as cash flow hedges, Tax (Expense) Benefit		183	3,282
unrealized losses on derivative financial instruments accounted for as cash flow hedges, Net of Tax Amount		(288)	(5,155)
Net cash flow hedge activity, Before-tax Amount	1,891	1,465	(6,427)
Net cash flow hedge activity, Tax (Expense) Benefit	(736)	(570)	2,500
Net cash flow hedge activity, Net of Tax Amount	1,155	895	(3,927)
Amendments to defined benefit pension plan, Before-tax Amount	(454)	(1,353)
Amendments to defined benefit pension plan, Tax (Expense) Benefit	177	526
Amendments to defined benefit pension plan, Net of Tax Amount	(277)	(827)
Net actuarial loss on defined benefit pension plan, Before-tax Amount	(952)	(125)	(1,933)
Net actuarial loss on defined benefit pension plan, Tax (Expense) Benefit	370	49	752
Net actuarial loss on defined benefit pension plan, Net of Tax Amount	(582)	(76)	(1,181)
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Before-tax Amount	855	736	365
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Tax (Expense) Benefit	(333)	(286)	(142)
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Net of Tax Amount	522	450	223
Net defined benefit pension plan activity, Before-tax Amount	(551)	(742)	(1,568)
Net defined benefit pension plan activity, Tax (Expense) Benefit	214	289	610
Net defined benefit pension plan activity, Net of Tax Amount	(337)	(453)	(958)
Total other comprehensive income (loss), Before-tax Amount	(1,492)	(10,609)	1,340
Total other comprehensive income (loss), Tax (Expense) Benefit	461	3,947	(286)
Total other comprehensive income (loss), Net of Tax Amount	(1,031)	(6,662)	1,054
Comprehensive income (loss), Before-tax Amount	161,500	104,405	108,410
Comprehensive income (loss), Tax (Expense) Benefit	(61,875)	(39,489)	(39,736)
Comprehensive income	$ 99,625	$ 64,916	$ 68,674

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 99,489	$ 86,912
Interest-bearing deposits in banks	117,859	153,451
Cash and cash equivalents	217,348	240,363
Securities available-for-sale	2,432,438	2,291,511
Securities held-to-maturity (fair value $333,170 and $371,658)	329,843	364,696
Mortgage loans held for sale (includes $27,891 and $0 at fair value)	29,878	24,231
Loans, net of unearned income	6,920,636	5,995,441
Less allowance for loan losses	(61,422)	(68,448)
Loans, net	6,859,214	5,926,993
Premises and equipment, net	189,938	178,165
Bank owned life insurance	143,543	105,493
Accrued interest receivable	28,018	25,786
Net deferred tax asset	154,336	197,613
Derivative financial instruments	23,688	20,082
Goodwill and other intangible assets	156,222	147,420
Other assets	144,189	94,075
Total assets	10,708,655	9,616,428
Deposits:
Demand	2,637,004	2,204,755
NOW	1,989,763	1,975,884
Money market	1,846,440	1,599,637
Savings	549,713	471,129
Time	1,287,142	1,282,803
Brokered	327,496	338,985
Total deposits	8,637,558	7,873,193
Short-term borrowings	5,000	16,640
Federal Home Loan Bank advances	709,209	430,125
Long-term debt	175,078	163,836
Derivative financial instruments	27,648	28,825
Accrued expenses and other liabilities	78,427	85,524
Total liabilities	9,632,920	8,598,143
Commitments and contingencies
Shareholders' equity:
Common stock	70,899	66,198
Common stock issuable; 519,874 and 458,953 shares	7,327	6,779
Capital surplus	1,275,849	1,286,361
Accumulated deficit	(251,857)	(330,879)
Accumulated other comprehensive loss	(26,483)	(25,452)
Total shareholders' equity	1,075,735	1,018,285
Total liabilities and shareholders' equity	10,708,655	9,616,428
Series H Preferred Stock
Shareholders' equity:
Preferred stock		9,992
Total shareholders' equity		9,992
Non-Voting Common Stock
Shareholders' equity:
Common stock		5,286
Total shareholders' equity		$ 5,286

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Securities held to maturity	$ 333,170	$ 371,658
Mortgage loans held for sale, at fair value	$ 27,891	$ 0
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	150,000,000	100,000,000
Common stock, shares issued	70,899,114	66,198,477
Common stock, shares outstanding	70,899,114	66,198,477
Common stock issuable, shares	519,874	458,953
Series H Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares issued	0	9,992
Preferred stock, shares outstanding	0	9,992
Non-Voting Common Stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	26,000,000	26,000,000
Common stock, shares issued	0	5,285,516
Common stock, shares outstanding	0	5,285,516

Consolidated Statement of Chang

Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Series B Preferred Stock	Series D Preferred Stock	Series H Preferred Stock	Non-Voting Common Stock	Common Stock	Common Stock Issuable	Capital Surplus	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive (Loss) Income	Total
Beginning balance at Dec. 31, 2013	$ 105,000	$ 16,613		$ 13,188	$ 46,243	$ 3,930	$ 1,078,676	$ (448,091)	$ (19,844)	$ 795,715
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								67,620		67,620
Other comprehensive income									1,054	1,054
Redemption of Series B preferred stock (105,000 shares)	(105,000)									(105,000)
Redemption of Series D preferred stock (16,613 shares)		(16,613)								(16,613)
Common stock issued at market (640,000 shares)					640		11,566			12,206
Common stock issued to Dividend Reinvestment Plan and employee benefit plans (20,500 common shares in 2016, 17,129 common shares in 2015 and 28,070 common shares in 2014)					28		441			469
Conversion of non-voting common stock to voting common stock (5,285,516 shares in 2016, 4,795,271 shares in 2015 and 3,107,419 shares in 2014)				(3,107)	3,107
Warrant repurchase at fair value							(12,000)			(12,000)
Amortization of stock option and restricted stock							4,304			4,304
Vesting of restricted stock awards, net of shares surrendered to cover payroll taxes (96,722 common shares issued, 106,771 common shares deferred in 2016, 120,692 common shares issued, 110,935 common shares deferred in 2015, 146,548 common shares issued, 115,609 common shares deferred in 2014)					147	1,274	(2,736)			(1,315)
Deferred compensation plan, net, including dividend equivalents						234				234
Shares issued from deferred compensation plan (61,899 common shares in 2016, 28,265 common shares in 2015 and 13,223 common shares in 2014)					13	(270)	257
Common stock dividends ($.30 per share in 2016, $.22 per share in 2015, $.11 per share in 2014)								(6,658)		(6,658)
Preferred stock dividends:
Series B								(159)		(159)
Series D								(280)		(280)
Ending balance at Dec. 31, 2014				10,081	50,178	5,168	1,080,508	(387,568)	(18,790)	739,577
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								71,578		71,578
Other comprehensive income									(6,662)	(6,662)
Common stock issued to Dividend Reinvestment Plan and employee benefit plans (20,500 common shares in 2016, 17,129 common shares in 2015 and 28,070 common shares in 2014)					17		286			303
Conversion of non-voting common stock to voting common stock (5,285,516 shares in 2016, 4,795,271 shares in 2015 and 3,107,419 shares in 2014)				(4,795)	4,795
Common and preferred stock issued for acquisitions (11,058,515 common shares and 9,992 preferred shares)			9,992		11,059		203,092			224,143
Amortization of stock option and restricted stock							4,403			4,403
Vesting of restricted stock awards, net of shares surrendered to cover payroll taxes (96,722 common shares issued, 106,771 common shares deferred in 2016, 120,692 common shares issued, 110,935 common shares deferred in 2015, 146,548 common shares issued, 115,609 common shares deferred in 2014)					121	1,509	(3,113)			(1,483)
Deferred compensation plan, net, including dividend equivalents						372				372
Shares issued from deferred compensation plan (61,899 common shares in 2016, 28,265 common shares in 2015 and 13,223 common shares in 2014)					28	(270)	242
Common stock dividends ($.30 per share in 2016, $.22 per share in 2015, $.11 per share in 2014)								(14,822)		(14,822)
Tax on option exercise and restricted stock vesting							943			943
Preferred stock dividends:
Series H								(67)		(67)
Ending balance at Dec. 31, 2015			9,992	5,286	66,198	6,779	1,286,361	(330,879)	(25,452)	1,018,285
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								100,656		100,656
Other comprehensive income									(1,031)	(1,031)
Common stock issued to Dividend Reinvestment Plan and employee benefit plans (20,500 common shares in 2016, 17,129 common shares in 2015 and 28,070 common shares in 2014)					20		346			366
Conversion of non-voting common stock to voting common stock (5,285,516 shares in 2016, 4,795,271 shares in 2015 and 3,107,419 shares in 2014)				$ (5,286)	5,286
Redemption of Series H preferred stock (9,992 shares)			$ (9,992)							(9,992)
Purchases of common stock (764,000 shares)					(764)		(12,895)			(13,659)
Amortization of stock option and restricted stock							4,496			4,496
Vesting of restricted stock awards, net of shares surrendered to cover payroll taxes (96,722 common shares issued, 106,771 common shares deferred in 2016, 120,692 common shares issued, 110,935 common shares deferred in 2015, 146,548 common shares issued, 115,609 common shares deferred in 2014)					97	1,597	(2,883)			(1,189)
Deferred compensation plan, net, including dividend equivalents						385				385
Shares issued from deferred compensation plan (61,899 common shares in 2016, 28,265 common shares in 2015 and 13,223 common shares in 2014)					62	(1,434)	1,372
Common stock dividends ($.30 per share in 2016, $.22 per share in 2015, $.11 per share in 2014)								(21,613)		(21,613)
Tax on option exercise and restricted stock vesting							(948)			(948)
Preferred stock dividends:
Series H								(21)		(21)
Ending balance at Dec. 31, 2016					$ 70,899	$ 7,327	$ 1,275,849	$ (251,857)	$ (26,483)	$ 1,075,735

Consolidated Statement of Chan7

Consolidated Statement of Changes in Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Common stock issued at market, shares issued			640,000
Common stock issued to dividend reinvestment plan and employee benefit plans	20,500	17,129	28,070
Conversion of stocks, shares	5,285,516	4,795,271	3,107,419
Common stock issued for acquisitions		11,058,515
Preferred stock issued for acquisitions		9,992
Purchases of common stock	764,000
Vesting of restricted stock, shares issued	96,722	120,692	146,548
Vesting of restricted stock, shares deferred	106,771	110,935	115,609
Shares issued from deferred compensation plan	61,899	28,265	13,223
Common stock dividends (in dollars per share)	$ 0.30	$ 0.22	$ 0.11
Series B Preferred Stock
Redemption of preferred stock			105,000
Series D Preferred Stock
Redemption of preferred stock			16,613
Series H Preferred Stock
Redemption of preferred stock	9,992

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 100,656	$ 71,578	$ 67,620
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	29,974	22,652	19,952
(Release of) provision for credit losses	(800)	3,700	8,500
Fixed asset impairment charge		5,969
Stock based compensation	4,496	4,403	4,304
Deferred income tax expense	59,727	38,296	38,226
Securities gains, net	(982)	(2,255)	(4,871)
Losses on prepayment of borrowings		1,294	4,446
Gains from sales of government guaranteed loans	(9,545)	(6,276)	(2,615)
Net gains on sales of other assets	(397)	(663)
Net gains on sales and write downs of other real estate owned	(2)	(638)	(704)
Change in assets and liabilities:
Increase in other assets and accrued interest receivable	(39,007)	(8,848)	(16,776)
Increase (decrease) in accrued expenses and other liabilities	110	(10,563)	(15,385)
Increase in mortgage loans held for sale	(5,505)	(6,705)	(3,418)
Net cash provided by operating activities	138,725	111,944	99,279
Investment securities held-to-maturity:
Proceeds from maturities and calls	68,232	70,962	64,791
Purchases	(24,021)	(20,000)	(173)
Investment securities available-for-sale:
Proceeds from sales	199,864	353,860	419,201
Proceeds from maturities and calls	392,575	284,435	224,302
Purchases	(692,983)	(839,345)	(603,384)
Net increase in loans	(657,650)	(475,132)	(323,837)
Proceeds from sales of loans held for investment		190,111	4,561
Net cash received (paid) for acquisitions	1,912	35,497	(31,261)
Funds (paid to) collected from FDIC under loss sharing agreements		(1,198)	2,662
Purchase of bank owned life insurance	(20,000)
Purchases of premises and equipment	(17,375)	(10,532)	(5,054)
Proceeds from sales of premises and equipment	5,077	5,546	3,137
Proceeds from sale of other real estate owned	12,043	5,352	10,175
Net cash used in investing activities	(732,326)	(400,444)	(234,880)
Financing activities:
Net increase in deposits	365,531	195,881	125,007
Net decrease in short-term borrowings	(21,640)	(18,437)	(51,687)
Proceeds from Federal Home Loan Bank advances	9,780,000	2,075,000	1,230,000
Repayment of Federal Home Loan Bank advances	(9,514,125)	(1,937,070)	(1,080,000)
Repayment of long-term debt		(48,521)
Proceeds from issuance of long-term debt		83,924
Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans	366	303	469
Proceeds from issuance of common stock, net of offering costs			12,206
Purchase of treasury stock	(13,659)
Repurchase of outstanding warrant at fair value			(12,000)
Retirement of preferred stock	(9,992)		(121,613)
Cash dividends on common stock	(15,849)	(14,822)	(1,810)
Cash dividends on preferred stock	(46)	(50)	(1,214)
Net cash provided by financing activities	570,586	336,208	99,358
Net change in cash and cash equivalents	(23,015)	47,708	(36,243)
Cash and cash equivalents at beginning of year	240,363	192,655	228,898
Cash and cash equivalents at end of year	217,348	240,363	192,655
Cash paid during the period for:
Interest	32,141	21,604	25,669
Income taxes paid	$ 3,948	$ 4,203	$ 3,046

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	(1) Summary of Significant Accounting Policies The accounting principles followed by United Community Banks, Inc. (“United”) and its subsidiaries and the methods of applying these principles conform with accounting principles generally accepted in the United States of America (“GAAP”) and with general practices within the banking industry. The following is a description of the significant policies. Organization and Basis of Presentation At December 31, 2016, United was a bank holding company subject to the regulation of the Board of Governors of the Federal Reserve System (the “Federal Reserve”) whose principal business was conducted by its wholly-owned commercial bank subsidiary, United Community Bank (the “Bank”). United is subject to regulation under the Bank Holding Company Act of 1956. The consolidated financial statements include the accounts of United, the Bank and other wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The Bank is a Georgia state chartered commercial bank that serves markets throughout north Georgia, coastal Georgia, the Atlanta-Sandy Springs-Roswell, Georgia and Gainesville, Georgia metropolitan statistical areas, western North Carolina, upstate and coastal South Carolina and east Tennessee and provides a full range of banking services. The Bank is insured and subject to the regulation of the Federal Deposit Insurance Corporation (“FDIC”) and is also subject to the regulation of the Georgia Department of Banking and Finance. Use of Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the balance sheet and revenue and expenses for the years then ended. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change are the determination of the allowance for loan losses, the valuation of acquired loans, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of goodwill and separately identifiable intangible assets associated with mergers and acquisitions, and the valuation of deferred tax assets. Operating Segments Operating segments are components of a business about which separate financial information is available and evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assessing performance. Public companies are required to report certain financial information about operating segments in interim and annual financial statements. United’s community banking operations are divided among geographic regions and local community banks within those regions, those regions and banks have similar economic characteristics and are therefore aggregated into one operating segment for purposes of segment reporting. Additionally United assessed other operating units to determine if they should be classified and reported as segments. They include Mortgage, Advisory Services and Specialized Lending. Each was assessed for separate reporting on both a qualitative and a quantitative basis in accordance with Financial Accounting Standards Boards (“FASB”) Accounting Standards Codification Topic 280 Segment Reporting (“ASC 280”). Qualitatively, these business units are currently operating in the same geographic footprint as the community banks and face many of the same customers as the community banks. While the chief operating decision maker does have some separate financial information for these entities, they are currently viewed more as a product line extension of the community banks. However, management will continue to evaluate these business units for separate reporting as facts and circumstances change. On a quantitative basis, ASC 280 provides a threshold of 10% of Revenue, Net Income or Assets where a breach of any of these thresholds would trigger segment reporting. Under this requirement none of the entities reached the threshold. Based on this analysis, United concluded that it has one operating and reportable segment. Cash and Cash Equivalents Cash equivalents include amounts due from banks, interest-bearing deposits in banks, federal funds sold, commercial paper, reverse repurchase agreements and short-term investments and are carried at cost. Federal funds are generally sold for one-day periods, interest-bearing deposits in banks are available on demand and commercial paper investments and reverse repurchase agreements mature within a period of less than 90 days. A portion of the cash on hand and on deposit with the Federal Reserve Bank of Atlanta was required to meet regulatory reserve requirements. Investment Securities United classifies its securities in one of three categories: trading, held-to-maturity or available-for-sale. United does not currently hold any trading securities that are bought and held principally for the purpose of selling them in the near term. Held-to-maturity securities are those securities for which United has the ability and intent to hold until maturity. All other securities are classified as available-for-sale. Held-to-maturity securities are recorded at cost, adjusted for the amortization or accretion of premiums or discounts. Available-for-sale securities are recorded at fair value. Unrealized holding gains and losses, net of the related tax effect, on available-for-sale securities are reported in other comprehensive income as a separate component of shareholders’ equity until realized. Transfers of securities between categories are recorded at fair value at the date of transfer. Unrealized holding gains or losses associated with transfers of securities from available-for-sale to held-to-maturity are included in the balance of accumulated other comprehensive income in the consolidated balance sheet. These unrealized holding gains or losses are amortized into income over the remaining life of the security as an adjustment to the yield in a manner consistent with the amortization or accretion of the original purchase premium or discount on the associated security. Management evaluates investment securities for other than temporary impairment on a quarterly basis. A decline in the fair value of available-for-sale and held-to-maturity securities below cost that is deemed other than temporary is charged to earnings for a decline in value deemed to be credit related. The decline in value attributed to non credit related factors is recognized in other comprehensive income and a new cost basis for the security is established. Premiums and discounts are amortized or accreted over the life of the related security as an adjustment to the yield. Realized gains and losses for securities classified as available-for-sale and held-to-maturity are included in net income and derived using the specific identification method for determining the cost of the securities sold. Federal Home Loan Bank (“FHLB”) stock is included in other assets at its original cost basis, as cost approximates fair value as there is no ready market for such investments. Mortgage Loans Held for Sale Beginning in the third quarter of 2016, United elected the fair value option for newly originated mortgage loans held for sale in order to reduce certain timing differences and better match changes in fair values of the loans with changes in the fair value of derivative instruments used to economically hedge them. Mortgage loans held for sale which were originated prior to third quarter 2016 are carried at the lower of aggregate cost or fair value. The amount by which cost exceeds fair value is accounted for as a valuation allowance. Changes in the valuation allowance are included in the determination of net income for the period in which the change occurs. No valuation allowances were required at December 31, 2016 or 2015 since those loans have fair values that exceeded the recorded cost basis. Loans Purchased Loans With Evidence of Credit Deterioration: Loans and Debt Securities Acquired with Deteriorated Credit Quality PCI loans are aggregated into pools of loans based on common risk characteristics such as the type of loan, payment status, or collateral type. United estimates the amount and timing of expected cash flows for each purchased loan pool and the expected cash flows in excess of the amount paid are recorded as interest income over the remaining life of the pool (accretable yield). The excess of the pool’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest revenue. Nonaccrual Loans: he accrual of interest is discontinued when a loan becomes 90 days past due and is not well collateralized and in the process of collection, or when management believes, after considering economic and business conditions and collection efforts, that the principal or interest will not be collectible in the normal course of business. Past due status is based on contractual terms of the loan. When a loan is placed on nonaccrual status, previously accrued and uncollected interest is charged against interest revenue on loans. Interest payments are applied to reduce the principal balance on nonaccrual loans. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, there is a sustained period of repayment performance and future payments are reasonably assured. Nonaccrual loans include smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. Impaired Loans: PCI loans are considered to be impaired when it is probable that United will be unable to collect all the cash flows expected at acquisition, plus additional cash flows expected to be collected arising from changes in estimates after acquisition. Loans that are accounted for in pools are evaluated collectively for impairment on a pool by pool basis based on expected pool cash flows. Discounts continue to be accreted as long as there are expected future cash flows in excess of the current carrying amount of the specifically-reviewed loan or pool. Concentration of Credit Risk: Allowance for Credit Losses The allowance for credit losses includes the allowance for loan losses and the allowance for unfunded commitments included in other liabilities. Increases to the allowance for loan losses and allowance for unfunded commitments are established through a provision for credit losses charged to income. Loans are charged against the allowance for loan losses when available information confirms that the collectability of the principal is unlikely. The allowance for loan losses represents an amount, which, in management’s judgment, is adequate to absorb probable losses on existing loans as of the date of the balance sheet. The allowance for unfunded commitments represents expected losses on unfunded commitments and is reported in the consolidated balance sheet in other liabilities. The allowance for loan losses is composed of general reserves, specific reserves, and PCI reserves. General reserves are determined by applying loss percentages to the individual loan categories that are based on actual historical loss experience. 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 considered in this evaluation. The need for specific reserves is evaluated on nonaccrual loan relationships greater than $500,000, accruing relationships rated substandard that are greater than $2 million and all troubled debt restructurings (“TDRs”). The specific reserves are determined on a loan-by-loan basis based on management’s evaluation of United’s exposure for each credit, given the current payment status of the loan and the value of any underlying collateral. Loans for which specific reserves are provided are excluded from the calculation of general reserves. For PCI loans, a valuation allowance is established when it is probable that the Company will be unable to collect all the cash flows expected at acquisition plus additional cash flows expected to be collected arising from changes in estimate after acquisition. The allocation of the allowance for loan losses is based on historical data, subjective judgment and estimates and, therefore, is not necessarily indicative of the specific amounts or loan categories in which charge-offs may ultimately occur. For purposes of determining general reserves, United segments the loan portfolio into broad categories with similar risk elements. Those categories and their specific risks are described below. Owner occupied commercial real estate – Income producing commercial real estate – Commercial & industrial Commercial construction Residential mortgage Home equity lines of credit – Residential construction Consumer installment Indirect auto - Management outsources a significant portion of its loan review to ensure objectivity in the loan review process and to challenge and corroborate the loan grading system. The loan review function provides additional analysis used in determining the adequacy of the allowance for loan losses. To supplement the outsourced loan review, management also has an internal loan review department that is independent of the lending function. Management believes the allowance for loan losses is appropriate at December 31, 2016. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on changes in economic conditions. In addition, various regulatory agencies, as an integral part of their examination process, periodically review United’s allowance for loan losses. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed primarily using the straight-line method over the estimated useful lives of the related assets. Costs incurred for maintenance and repairs are expensed as incurred. The range of estimated useful lives for buildings and improvements is 10 to 40 years, for land improvements, 10 years, and for furniture and equipment, 3 to 10 years. United periodically reviews the carrying value of premises and equipment for impairment whenever events or circumstances indicate that the carrying amount of such assets may not be fully recoverable. Foreclosed Properties (Other Real Estate Owned, or “OREO”) Foreclosed property is initially recorded at fair value, less cost to sell. If the fair value, less cost to sell at the time of foreclosure is less than the loan balance, the deficiency is recorded as a loan charge-off against the allowance for loan losses. If the fair value, less cost to sell, of the foreclosed property decreases during the holding period, a valuation allowance is established with a charge to operating expenses. When the foreclosed property is sold, a gain or loss is recognized on the sale for the difference between the sales proceeds and the carrying amount of the property. Financed sales of foreclosed property are accounted for in accordance with Accounting Standards Codification Topic 360, Subtopic 20, Real Estate Sales Goodwill and Other Intangible Assets Goodwill is an asset representing the future economic benefits from other assets acquired that are not individually identified and separately recognized. Goodwill is measured as the excess of the consideration transferred, net of the fair value of identifiable assets acquired and liabilities assumed at the acquisition date. Goodwill is not amortized, but instead is tested for impairment annually or more frequently if events or circumstances exist that indicate a goodwill impairment test should be performed. Other intangible assets, which are initially recorded at fair value, consist of core deposit intangible assets resulting from United’s acquisitions. Core deposit intangible assets are amortized on a sum-of-the-years-digits basis over their estimated useful lives. United evaluates its other intangible assets for impairment whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable Transfers of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from United, the transferee obtains the right, free of conditions that constrain it from taking advantage of that right, to pledge or exchange the transferred assets and United does not maintain effective control over the transferred assets through an agreement to repurchase them before maturity. Servicing Rights United records a separate servicing asset for Small Business Administration (“SBA”) loans, United States Department of Agriculture (“USDA”) loans, and residential mortgage loans when the loan is sold but servicing is retained. This asset represents the right to service the loans and receive a fee in compensation. Servicing assets are initially recorded at their fair value as a component of the sale proceeds. The fair value of the servicing assets is based on an analysis of discounted cash flows that incorporates estimates of (1) market servicing costs, (2) market-based prepayment rates, and (3) market profit margins. Servicing assets are included in other assets. United has elected to subsequently measure the servicing assets for government guaranteed loans at fair value. There is no aggregation of the loans into pools for the valuation of the servicing asset, but rather the servicing asset value is measured at a loan level. Residential mortgage servicing rights are subsequently measured using the amortization method which requires the servicing rights to be amortized to expense over the estimated life of the servicing right. These servicing rights are carried at the lower of amortized cost or estimated fair value. Impairment valuations are based on projections using a discounted cash flow method that includes assumptions regarding prepayments, interest rates, servicing costs and other factors. Impairment is measured on a disaggregated basis for each stratum of the servicing rights, which is segregated based on predominant risk characteristics including interest rate and loan type. Subsequent increases in value are recognized to the extent of previously recorded impairment for each stratum. The rate of prepayment of loans serviced is the most significant estimate involved in the measurement process. Estimates of prepayment rates are based on market expectations of future prepayment rates, industry trends, and other considerations. Actual prepayment rates will differ from those projected by management due to changes in a variety of economic factors, including prevailing interest rates and the availability of alternative financing sources to borrowers. If actual prepayments of the loans being serviced were to occur more quickly than projected, the carrying value of servicing assets might have to be written down through a charge to earnings in the current period. If actual prepayments of the loans being serviced were to occur more slowly than had been projected, the carrying value of servicing assets could increase, and servicing income would exceed previously projected amounts. Bank Owned Life Insurance United has purchased life insurance policies on certain key executives and members of management. United has also received life insurance policies on members of acquired bank management teams through acquisitions of other banks. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other changes or other amounts due that are probable at settlement. Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount for these items represents the exposure to loss before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Income Taxes Deferred tax assets and liabilities are recorded for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Future tax benefits are recognized to the extent that realization of such benefits is more likely than not. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the assets and liabilities are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income taxes during the period that includes the enactment date. In the event the future tax consequences of differences between the financial reporting bases and the tax bases of United’s assets and liabilities results in deferred tax assets, an evaluation of the probability of being able to realize the future benefits indicated by such asset is required. A valuation allowance is provided for the portion of the deferred tax asset when it is more likely than not that some or all of the deferred tax asset will not be realized. In assessing the realizability of the deferred tax assets, management considers the scheduled reversals of deferred tax liabilities, projected future taxable earnings and prudent and feasible tax planning strategies. Management weighs both the positive and negative evidence, giving more weight to evidence that can be objectively verified. The income tax benefit or expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50 percent likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. United recognizes interest and / or penalties related to income tax matters in income tax expense. Derivative Instruments and Hedging Activities United’s interest rate risk management strategy incorporates the use of derivative instruments to minimize fluctuations in net income that are caused by interest rate volatility. United’s goal is to manage interest rate sensitivity by modifying the repricing or maturity characteristics of certain balance sheet assets and liabilities so that net interest revenue is not, on a material basis, adversely affected by movements in interest rates. United views this strategy as a prudent management of interest rate risk, such that net income is not exposed to undue risk presented by changes in interest rates. In carrying out this part of its interest rate risk management strategy, United uses interest rate derivative contracts. The primary type of derivative contract used by United to manage interest rate risk is interest rate swaps. Interest rate swaps generally involve the exchange of fixed- and variable-rate interest payments between two parties, based on a common notional principal amount and maturity date. In addition, United originates certain residential mortgage loans with the intention of selling these loans. Between the time United enters into an interest-rate lock commitment to originate a residential mortgage loan that is to be held for sale and the time the loan is funded and eventually sold, the Company is subject to the risk of variability in market prices. United also enters into forward sale agreements to mitigate risk and to protect the expected gain on the eventual loan sale. Most of this activity is on a matched basis, with a loan sale commitment hedging a specific loan. The commitments to originate residential mortgage loans and forward loan sales commitments are freestanding derivative instruments. To accommodate customers, United occasionally enters into credit risk participation agreements with counterparty banks to accept a portion of the credit risk related to interest rate swaps. This allows customers to execute an interest rate swap with one bank while allowing for the distribution of the credit risk among participating members. Credit risk participation agreements arise when United contracts with other financial institutions, as a guarantor, to share credit risk associated with certain interest rate swaps. These agreements provide for reimbursement of losses resulting from a third party default on the underlying swap. These transactions are typically executed in conjunction with a participation in a loan with the same customer. Collateral used to support the credit risk for the underlying lending relationship is also available to offset the risk of the credit risk participation. United classifies its derivative financial instruments as either (1) a hedge of an exposure to changes in the fair value of a recorded asset or liability (“fair value hedge”), (2) a hedge of an exposure to changes in the cash flows of a recognized asset, liability or forecasted transaction (“cash flow hedge”), or (3) derivatives not designated as accounting hedges. Changes in the fair value of derivatives not designated as hedges are recognized in current period earnings. United has master netting agreements with the derivatives dealers with which it does business, but reflects gross assets and liabilities on the consolidated balance sheet. United uses the long-haul method to assess hedge effectiveness. United documents, both at inception and over the life of the hedge, at least quarterly, its analysis of actual and expected hedge effectiveness. This analysis includes techniques such as regression analysis and hypothetical derivatives to demonstrate that the hedge has been, and is expected to be, highly effective in offsetting corresponding changes in the fair value or cash flows of the hedged item. For a qualifying fair value hedge, changes in the value of derivatives that have been highly effective as hedges are recognized in current period earnings along with the corresponding changes in the fair value of the designated hedged item attributable to the risk being hedged. For a qualifying cash flow hedge, the portion of changes in the fair value of the derivatives that have been highly effective are recognized in other comprehensive income until the related cash flows from the hedged item are recognized in earnings. For fair value hedges and cash flow hedges, ineffectiveness is recognized in the same income statement line as interest accruals on the hedged item to the extent that changes in the value of the derivative instruments do not perfectly offset changes in the value of the hedged items. If the hedge ceases to be highly effective, United discontinues hedge accounting and recognizes the changes in fair value in current period earnings. If a derivative that qualifies as a fair value or cash flow hedge is terminated or the designation removed, the realized or then unrealized gain or loss is recognized into income over the life of the hedged item (fair value hedge) or over the time when the hedged item was forecasted to impact earnings (cash flow hedge). Immediate recognition in earnings is required upon sale or extinguishment of the hedged item (fair value hedge) or if it is probable that the hedged cash flows will not occur (cash flow hedge). By using derivative instruments, United is exposed to credit and market risk. If the counterparty fails to perform, credit risk is represented by the fair value gain in a derivative. When the fair value of a derivative contract is positive, this situation generally indicates that the counterparty is obligated to pay United, and, therefore, creates a repayment risk for United. When the fair value of a derivative contract is negative, United is obligated to pay the counterparty and, therefore, has no repayment risk. United minimizes the credit risk in derivative instruments by entering into transactions with high-quality counterparties that are reviewed periodically by United. United also requires the counterparties to pledge securities as collateral to cover the net exposure. Derivative activities are monitored by the Asset/Liability Management Committee (“ALCO”) as part of that committee’s oversight of asset/liability and treasury functions. ALCO is responsible for implementing various hedging strategies that are developed through its analysis of data from financial simulation models and other internal and industry sources. The resulting hedging strategies are then incorporated into the overall interest-rate risk management process. United recognizes the Acquisition Activities United accounts for business combinations under the acquisition method of accounting. Assets acquired and liabilities assumed are measured and recorded at fair value at the date of acquisition, including identifiable intangible assets. If the fair value of net assets purchased exceeds the fair value of consideration paid, a bargain purchase gain is recognized at the date of acquisition. Conversely, if the consideration paid exceeds the fair value of the net assets acquired, goodwill is recognized at the acquisition date. Fair values are subject to refinement for a period not to exceed one year after the closing date of an acquisition as information relative to closing date fair values becomes available. The determination of the fair value of loans acquired takes into account credit quality deterioration and probability of loss; therefore, the related allowance for loan losses is not carried forward. All identifiable intangible assets that are acquired in a business combination are recognized at fair value on the acquisition date. Identifiable intangible assets are recognized separately if they arise from contractual or other legal rights or if they are separable (i.e., capable of being sold, transferred, licensed, rented, or exchanged separately from the entity). Deposit liabilities and the related depositor relationship intangible assets may be exchanged in observable exchange transactions. As a result, the depositor relationship intangible asset is considered identifiable, because the separability criterion has been met. Earnings Per Common Share Basic earnings per common share is net income available to common shareholders divided by the weighted average number of shares of common stock outstanding during the period. All outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends are considered participating securities for this calculation. Additionally, shares issuable to participants in United’s deferred compensation plan are considered to be participating securities for purposes of calculating basic earnings per share. Diluted earnings per common share includes the dilutive effect of additional potential shares of common stock issuable under stock options, warrants and securities convertible into common stock. Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are such matters that will have a material effect on the financial statements. Dividend Restrictions Banking regulations require maintaining certain capital levels and may limit dividends paid by the Bank to United or by United to shareholders. Specifically, dividends paid by the Bank to United require pre-approval of the Georgia Department of Banking and Finance and the FDIC while the Bank has an accumulated deficit (negative retained earnings). Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions as more fully dis

Accounting Standards Updates

Accounting Standards Updates	12 Months Ended
	Dec. 31, 2016
Accounting Standards Updates [Abstract]
Accounting Standards Updates	(2) Accounting Standards Updates In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) 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 In March 2016, the FASB issued ASU No. 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments In March 2016, the FASB issued ASU No. 2016-07, Investments – Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business In January 2017, the FASB issued ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment

Mergers and Acquisitions

Mergers and Acquisitions	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Mergers and Acquisitions	(3) Mergers and Acquisitions Acquisition of Tidelands Bancshares, Inc. On July 1, 2016, United completed the acquisition of Tidelands Bancshares, Inc. (“Tidelands”) and its wholly-owned bank subsidiary, Tidelands Bank. Tidelands operated seven branches in coastal South Carolina. In connection with the acquisition, United acquired $440 million of assets and assumed $440 million of liabilities. Under the terms of the merger agreement, Tidelands shareholders received cash equal to $0.52 per common share, or an aggregate of $2.22 million. Additionally, at closing, United redeemed all of Tidelands’ fixed-rate cumulative preferred stock that was issued to the U.S. Department of the Treasury (the “Treasury”) under the Treasury’s Capital Purchase Program, plus unpaid dividends, for $8.98 million in aggregate. The fair value of consideration paid exceeded the fair value of the identifiable assets and liabilities acquired and resulted in the establishment of goodwill in the amount of $10.7 million, representing the intangible value of Tidelands’ business and reputation within the market it served. None of the goodwill recognized is expected to be deductible for income tax purposes. United will amortize the related core deposit intangible of $1.57 million using the sum-of-the-years-digits method over five years, which represents the expected useful life of the asset. United’s operating results for the period ended December 31, 2016 include the operating results of the acquired assets and assumed liabilities for the period subsequent to the acquisition date of July 1, 2016. The purchased assets and assumed liabilities were recorded at their acquisition date fair values and are summarized in the table below (in thousands) As Recorded Fair Value As Recorded by by Tidelands Adjustments (1) United Assets Cash and cash equivalents $ 13,121 $ - $ 13,121 Securities 65,676 (155 ) 65,521 Loans held for sale 139 3 142 Loans, net 317,938 (12,035 ) 305,903 Premises and equipment, net 19,133 (7,944 ) 11,189 Bank owned life insurance 16,917 - 16,917 Accrued interest receivable 1,086 (167 ) 919 Net deferred tax asset 73 15,639 15,712 Core deposit intangible - 1,570 1,570 Other real estate owned 9,881 (2,386 ) 7,495 Other assets 1,920 (164 ) 1,756 Total assets acquired $ 445,884 $ (5,639 ) $ 440,245 Liabilities Deposits $ 398,108 $ 1,765 $ 399,873 Repurchase agreements 10,000 155 10,155 Federal Home Loan Bank advances 13,000 354 13,354 Long-term debt 14,434 (3,668 ) 10,766 Other liabilities 11,587 (5,986 ) 5,601 Total liabilities assumed 447,129 (7,380 ) 439,749 Excess of assets acquired over liabilities assumed $ (1,245 ) Aggregate fair value adjustments $ 1,741 Total identifiable net assets $ 496 Consideration transferred Cash paid to redeem common stock 2,224 Cash paid to redeem preferred stock issued under the Treasury’s Capital Purchase Program 8,985 Total fair value of consideration transferred 11,209 Goodwill $ 10,713 (1) The following table presents additional information related to the acquired loan portfolio at the acquisition date (in thousands) July 1, 2016 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 50,660 Non-accretable difference 13,483 Cash flows expected to be collected 37,177 Accretable yield 2,113 Fair value $ 35,064 Excluded from ASC 310-30: Fair value $ 270,839 Gross contractual amounts receivable 302,331 Estimate of contractual cash flows not expected to be collected 3,859 Acquisition of Palmetto Bancshares, Inc. On September 1, 2015, United completed the acquisition of Palmetto Bancshares, Inc. (“Palmetto”) and its wholly-owned bank subsidiary, The Palmetto Bank. Palmetto operated 25 branches in South Carolina. In connection with the acquisition, United acquired $1.15 billion of assets and assumed $1.02 billion of liabilities. Total consideration transferred was $244 million of common equity and cash. The fair value of consideration paid exceeded the fair value of the identifiable assets and liabilities acquired and resulted in the establishment of goodwill in the amount of $115 million, representing the intangible value of Palmetto’s business and reputation within the market it serves. None of the goodwill recognized is expected to be deductible for income tax purposes. United will amortize the related core deposit intangible of $12.9 million using the sum-of-the-years-digits method over 12 years, which represents the expected useful life of the asset. The fair value of the 8.70 million common shares issued as part of the consideration paid for Palmetto was determined on the basis of the closing market price of United’s common shares on the acquisition date. The purchased assets and assumed liabilities were recorded at their acquisition date fair values and are summarized in the table below (in thousands) As Recorded Fair Value As Recorded by by Palmetto Adjustments United Assets Cash and cash equivalents $ 64,906 $ - $ 64,906 Securities 208,407 (340 ) 208,067 Loans held for sale 2,356 91 2,447 Loans, net 802,111 (5,552 ) 796,559 Premises and equipment, net 21,888 (4,931 ) 16,957 Bank owned life insurance 12,133 (148 ) 11,985 Accrued interest receivable 3,227 (346 ) 2,881 Net deferred tax asset 14,798 1,587 16,385 Core deposit intangible - 12,900 12,900 Other assets 18,439 (4,731 ) 13,708 Total assets acquired $ 1,148,265 $ (1,470 ) $ 1,146,795 Liabilities Deposits $ 989,296 $ - $ 989,296 Short-term borrowings 13,537 - 13,537 Other liabilities 11,994 2,808 14,802 Total liabilities assumed 1,014,827 2,808 1,017,635 Excess of assets acquired over liabilities assumed $ 133,438 Aggregate fair value adjustments $ (4,278 ) Total identifiable net assets $ 129,160 Consideration transferred Cash 74,003 Common stock issued (8,700,012 shares) 170,259 Total fair value of consideration transferred 244,262 Goodwill $ 115,102 Since the acquisition date, within the one year measurement period, United received additional information regarding the fair values of loans, premises and equipment, , which is included in other assets in the table above, and certain other assets. As a result, the provisional values assigned to the acquired loans, premises and equipment, OREO and other assets have been adjusted by an increase of $535,000, a decrease of $6.18 million, a decrease of $2.06 million and a decrease of $3.75 million, respectively. There were also small adjustments to securities, bank owned life insurance and other liabilities. The tax effect of all adjustments was reflected as an increase to the deferred tax asset of $3.91 million, with the net amount reflected as a $7.18 million increase to goodwill. The following table presents additional information related to the acquired loan portfolio at acquisition date (in thousands) September 1, 2015 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 63,623 Non-accretable difference 13,397 Cash flows expected to be collected 50,226 Accretable yield 4,306 Fair value $ 45,920 Excluded from ASC 310-30: Fair value $ 750,639 Gross contractual amounts receivable 859,628 Estimate of contractual cash flows not expected to be collected 7,733 Acquisition of MoneyTree Corporation On May 1, 2015, United completed the acquisition of MoneyTree Corporation (“MoneyTree”) and its wholly-owned bank subsidiary, First National Bank (“FNB”). FNB operated ten branches in east Tennessee. In connection with the acquisition, United acquired $459 million of assets and assumed $410 million of liabilities and $9.99 million of preferred stock. Total consideration transferred was $54.6 million of common equity and cash. The fair value of consideration paid exceeded the fair value of the identifiable assets and liabilities acquired and resulted in the establishment of goodwill in the amount of $14.7 million, representing the intangible value of FNB’s business and reputation within the market it serves. None of the goodwill recognized is expected to be deductible for income tax purposes. United will amortize the related core deposit intangible of $4.22 million using the sum-of-the-years-digits method over 6.67 years, which represents the expected useful life of the asset. The deposit premium of $917,000 will be amortized using the effective yield method over 5 years, which represents the weighted average maturity of the underlying deposits. The fair value of the 2.36 million common shares issued as part of the consideration paid for MoneyTree was determined on the basis of the closing market price of United’s common shares on the acquisition date. Upon completion of the acquisition, each share of preferred stock issued by MoneyTree as part of the Small Business Lending Fund (“SBLF”) program of the Treasury (9,992 shares in the aggregate with a liquidation preference amount of $1,000 per share) was converted automatically into one substantially identical share of preferred stock of the Company. See Note 22 for further information on preferred stock. The purchased assets and assumed liabilities were recorded at their acquisition date fair values, and are summarized in the table below (in thousands) As Recorded Fair Value As Recorded by by MoneyTree Adjustments United Assets Cash and cash equivalents $ 55,293 $ - $ 55,293 Securities 127,123 (52 ) 127,071 Loans held for sale 1,342 - 1,342 Loans, net 246,816 (2,464 ) 244,352 Premises and equipment, net 9,497 1,362 10,859 Bank owned life insurance 11,194 - 11,194 Core deposit intangible - 4,220 4,220 Other assets 5,462 (399 ) 5,063 Total assets acquired $ 456,727 $ 2,667 $ 459,394 Liabilities Deposits $ 368,833 $ 917 $ 369,750 Short-term borrowings 15,000 - 15,000 Federal Home Loan Bank advances 22,000 70 22,070 Other liabilities 864 1,828 2,692 Total liabilities assumed 406,697 2,815 409,512 SBLF preferred stock assumed 9,992 - 9,992 Excess of assets acquired over liabilities and preferred stock assumed $ 40,038 Aggregate fair value adjustments $ (148 ) Total identifiable net assets $ 39,890 Consideration transferred Cash 10,699 Common stock issued (2,358,503 shares) 43,892 Total fair value of consideration transferred 54,591 Goodwill $ 14,701 Since the acquisition date, within the one year measurement period, United received additional information regarding the fair value of premises and equipment. As a result, the provisional value assigned to the acquired premises and equipment was reduced by $2.40 million, partially offset by acquisition-related adjustments to deferred tax assets. The net of these adjustments was reflected as a $1.68 million increase to goodwill. The following table presents additional information related to the acquired loan portfolio at acquisition date (in thousands) May 1, 2015 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 15,152 Non-accretable difference 3,677 Cash flows expected to be collected 11,475 Accretable yield 1,029 Fair value $ 10,446 Excluded from ASC 310-30: Fair value $ 233,906 Gross contractual amounts receivable 258,931 Estimate of contractual cash flows not expected to be collected 1,231 Pro forma information - unaudited The following table discloses the impact of the mergers with Tidelands, Palmetto and MoneyTree since the respective acquisition dates through December 31 of the year of acquisition. The table also presents certain pro forma information as if Tidelands had been acquired on January 1, 2015 and Palmetto and MoneyTree had been acquired on January 1, 2014. These results combine the historical results of Palmetto and MoneyTree with United’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 necessarily indicative of what would have occurred had the acquisitions taken place in earlier years. The following table presents the actual results and pro forma information for the periods indicated (in thousands) (Unaudited) Year Ended December 31, Revenue Net Income 2016 Actual Tidelands results included in statement of income since acquisition date $ 7,512 $ 1,189 Supplemental consolidated pro forma as if Tidelands had been acquired January 1, 2015 411,088 100,184 2015 Actual Palmetto results included in statement of income since acquisition date $ 17,887 $ 7,010 Actual MoneyTree results included in statement of income since acquisition date 8,373 3,806 Supplemental consolidated pro forma as if Tidelands had been acquired January 1, 2015 and Palmetto and MoneyTree had been acquired January 1, 2014 382,921 82,465 2014 Supplemental consolidated pro forma as if Palmetto and MoneyTree had been acquired January 1, 2014 $ 342,211 $ 72,438 Acquisition of Business Carolina, Inc. On June 26, 2014, United completed the acquisition of substantially all of the assets of Business Carolina, Inc., a specialty SBA / USDA lender headquartered in Columbia, South Carolina. On the closing date, United paid $31.3 million in cash for loans having a fair value on the purchase date of $24.8 million, accrued interest of $83,000, servicing rights with a fair value on the purchase date of $2.13 million, premises and equipment with a fair value on the purchase date of $2.60 million and goodwill in the amount of $1.51 million representing the premium paid over the fair value of the separately identifiable assets and liabilities acquired. The gross contractual amount of loans receivable was $28.0 million as of the acquisition date. United did not identify any material separately identifiable intangible assets resulting from the acquisition.

Cash Flows

Cash Flows	12 Months Ended
	Dec. 31, 2016
Cash Flow [Abstract]
Cash Flows	(4) Cash Flows During 2016, 2015 and 2014, loans having a value of $8.18 million, $4.93 million and $9.09 million, respectively, were transferred to foreclosed property. United also accounts for sales and purchases of government guaranteed loans on the trade date. At December 31, 2016 and 2015, United had unsettled sales of government guaranteed loans of $29.9 million and $18.5 million, respectively. At December 31, 2016, United had no unsettled purchases of government guaranteed loans, while at December 31, 2015, United had $18.3 million of unsettled purchases of government guaranteed loans. There were no unsettled government guaranteed loan transactions at December 31, 2014. United accounts for securities transactions on the trade date. There were no unsettled securities transactions at December 31, 2016 or 2015. At December 31, 2014, United had purchased $5.43 million in securities that had not settled. During 2016, United acquired, through business combinations, assets with a fair value totaling $451 million and liabilities with a fair value totaling $440 million, for net assets acquired of $11.2 million. During 2015, United acquired, through business combinations, assets with a fair value totaling $1.74 billion and liabilities with a fair value totaling $1.43 billion, for net assets acquired of $309 million. Common and preferred stock issued pursuant to these business combinations in 2015 totaled $214 million and $9.99 million, respectively. During 2014, United acquired, through business combinations, assets with a fair value totaling $31.3 million.

Balance Sheet Offsetting and Re

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings	12 Months Ended
	Dec. 31, 2016
Offsetting [Abstract]
Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings	(5) Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings United enters into reverse repurchase agreements in order to invest short-term funds. In addition, United enters into repurchase agreements and reverse repurchase agreements and offsetting securities lending transactions with the same counterparty in transactions commonly referred to as collateral swaps that are subject to master netting agreements under which the balances are netted in the balance sheet in accordance with ASC 210-20, Offsetting. The following table presents a summary of amounts outstanding under reverse repurchase agreements and derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements as of the dates indicated (in thousands). Gross Gross Gross Amounts not Offset December 31, 2016 Recognized the Balance Net Asset Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 150,000 $ (150,000 ) $ - $ - $ - $ - Derivatives 23,688 - 23,688 (3,485 ) (3,366 ) 16,837 Total $ 173,688 $ (150,000 ) $ 23,688 $ (3,485 ) $ (3,366 ) $ 16,837 Weighted average interest rate of reverse repurchase agreements 1.78 % Gross Gross Net Gross Amounts not Offset Recognized the Balance Liability Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 150,000 $ (150,000 ) $ - $ - $ - $ - Derivatives 27,648 - 27,648 (3,485 ) (18,505 ) 5,658 Total $ 177,648 $ (150,000 ) $ 27,648 $ (3,485 ) $ (18,505 ) $ 5,658 Weighted average interest rate of repurchase agreements .88 % Gross Gross Gross Amounts not Offset December 31, 2015 Recognized the Balance Net Asset Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 400,000 $ (400,000 ) $ - $ - $ - $ - Derivatives 20,082 - 20,082 (519 ) (3,729 ) 15,834 Total $ 420,082 $ (400,000 ) $ 20,082 $ (519 ) $ (3,729 ) $ 15,834 Weighted average interest rate of reverse repurchase agreements 1.34 % Gross Gross Net Gross Amounts not Offset Recognized the Balance Liability Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 400,000 $ (400,000 ) $ - $ - $ - $ - Derivatives 28,825 - 28,825 (519 ) (30,917 ) - Total $ 428,825 $ (400,000 ) $ 28,825 $ (519 ) $ (30,917 ) $ - Weighted average interest rate of repurchase agreements .50 % At December 31, 2016, United recognized the right to reclaim cash collateral of $18.5 million and the obligation to return cash collateral of $3.37 million. At December 31, 2015, United recognized the right to reclaim cash collateral of $6.26 million and the obligation to return cash collateral of $3.73 million. The right to reclaim cash collateral and the obligation to return cash collateral were included in the consolidated balance sheet in other assets and other liabilities, respectively. The following table presents additional detail regarding repurchase agreements accounted for as secured borrowings and the securities underlying these agreements as of the dates indicated (in thousands) Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30 to 90 Days 91 to 110 days Total As of December 31, 2016 Mortgage-backed securities $ - $ - $ 50,000 $ 100,000 $ 150,000 Total $ - $ - $ 50,000 $ 100,000 $ 150,000 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 150,000 Amounts related to agreements not included in offsetting disclosure $ - As of December 31, 2015 U.S. Treasuries $ - $ - $ 100,000 $ - $ 100,000 U.S. Government agencies 32 - - - 32 Mortgage-backed securities 16,608 25,000 175,000 100,000 316,608 Total $ 16,640 $ 25,000 $ 275,000 $ 100,000 $ 416,640 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 400,000 Amounts related to agreements not included in offsetting disclosure $ 16,640 United is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase agreement price. United manages this risk by maintaining an unpledged securities portfolio that it believes is sufficient to cover a decline in the market value of the securities sold under agreements to repurchase.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2016
Investment Securities [Abstract]
Investment Securities	(6) Investment Securities At both December 31, 2016 and 2015, securities with a carrying value of $1.45 billion and $1.63 billion, respectively, were pledged to secure public deposits, derivatives and other secured borrowings. The cost basis, unrealized gains and losses, and fair value of securities held-to-maturity as of the dates indicated are as follows (in thousands) Gross Gross Amortized Unrealized Unrealized Fair As of December 31, 2016 Cost Gains Losses Value State and political subdivisions $ 57,134 $ 2,197 $ 249 $ 59,082 Mortgage-backed securities (1) 272,709 4,035 2,656 274,088 Total $ 329,843 $ 6,232 $ 2,905 $ 333,170 As of December 31, 2015 State and political subdivisions $ 62,073 $ 3,211 $ - $ 65,284 Mortgage-backed securities (1) 302,623 5,424 1,673 306,374 Total $ 364,696 $ 8,635 $ 1,673 $ 371,658 (1) The cost basis, unrealized gains and losses, and fair value of securities available-for-sale as of the dates indicated are as follows (in thousands): Gross Gross Amortized Unrealized Unrealized Fair As of December 31, 2016 Cost Gains Losses Value U.S. Treasuries $ 170,360 $ 20 $ 764 $ 169,616 U.S. Government agencies 21,053 6 239 20,820 State and political subdivisions 74,555 176 554 74,177 Mortgage-backed securities (1) 1,397,435 8,924 14,677 1,391,682 Corporate bonds 306,824 591 2,023 305,392 Asset-backed securities 468,742 2,798 1,971 469,569 Other 1,182 - - 1,182 Total $ 2,440,151 $ 12,515 $ 20,228 $ 2,432,438 As of December 31, 2015 U.S. Treasuries $ 169,034 $ 156 $ 484 $ 168,706 U.S. Government agencies 112,394 385 439 112,340 State and political subdivisions 56,265 461 458 56,268 Mortgage-backed securities (1) 1,108,206 12,077 7,165 1,113,118 Corporate bonds 308,102 933 3,009 306,026 Asset-backed securities 538,679 569 6,006 533,242 Other 1,811 - - 1,811 Total $ 2,294,491 $ 14,581 $ 17,561 $ 2,291,511 (1) The following summarizes available-for-sale securities sales activities for the years ended December 31 (in thousands) 2016 2015 2014 Proceeds from sales $ 199,864 $ 353,860 $ 419,201 Gross gains on sales $ 1,647 $ 2,409 $ 6,003 Gross losses on sales (665 ) (154 ) (1,132 ) Net gains on sales of securities $ 982 $ 2,255 $ 4,871 Income tax expense attributable to sales $ 371 $ 862 $ 1,902 At year-end 2016 and 2015, there were no holdings of debt obligations of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of shareholders’ equity. The following summarizes securities held-to-maturity in an unrealized loss position as of the dates indicated (in thousands) Less than 12 Months 12 Months or More Total As of December 31, 2016 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized State and political subdivisions $ 18,359 $ 249 $ - $ - $ 18,359 $ 249 Mortgage-backed securities 118,164 2,656 - - 118,164 2,656 Total unrealized loss position $ 136,523 $ 2,905 $ - $ - $ 136,523 $ 2,905 As of December 31, 2015 Mortgage-backed securities $ 140,362 $ 1,331 $ 13,127 $ 342 $ 153,489 $ 1,673 Total unrealized loss position $ 140,362 $ 1,331 $ 13,127 $ 342 $ 153,489 $ 1,673 The following summarizes securities available-for-sale in an unrealized loss position as of the dates indicated (in thousands) Less than 12 Months 12 Months or More Total As of December 31, 2016 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized U.S. Treasuries $ 145,229 $ 764 $ - $ - $ 145,229 $ 764 U.S. Government agencies 19,685 239 - - 19,685 239 State and political subdivisions 61,782 554 - - 61,782 554 Mortgage-backed securities 810,686 13,952 26,279 725 836,965 14,677 Corporate bonds 228,504 1,597 15,574 426 244,078 2,023 Asset-backed securities 54,477 540 115,338 1,431 169,815 1,971 Total unrealized loss position $ 1,320,363 $ 17,646 $ 157,191 $ 2,582 $ 1,477,554 $ 20,228 As of December 31, 2015 U.S. Treasuries $ 126,066 $ 484 $ - $ - $ 126,066 $ 484 U.S. Government agencies 74,189 439 - - 74,189 439 State and political subdivisions 27,014 458 - - 27,014 458 Mortgage-backed securities 274,005 2,580 173,254 4,585 447,259 7,165 Corporate bonds 221,337 2,759 750 250 222,087 3,009 Asset-backed securities 358,940 5,746 4,816 260 363,756 6,006 Total unrealized loss position $ 1,081,551 $ 12,466 $ 178,820 $ 5,095 $ 1,260,371 $ 17,561 At December 31, 2016, there were 170 available-for-sale securities and 41 held-to-maturity securities that were in an unrealized loss position. Management does not intend to sell nor believes it will be required to sell securities in an unrealized loss position prior to the recovery of its amortized cost basis. Unrealized losses at December 31, 2016 and 2015 were primarily attributable to changes in interest rates and spread relationships. Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, among other factors. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analyst’s reports. No impairment charges were recognized during 2016, 2015 or 2014. Realized gains and losses are derived using the specific identification method for determining the cost of the securities sold. The amortized cost and fair value of available-for-sale and held-to-maturity securities at December 31, 2016, by contractual maturity, are presented in the following table (in thousands) Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value US Treasuries: 1 to 5 years $ 116,093 $ 115,702 $ - $ - 5 to 10 years 54,267 53,914 - - 170,360 169,616 - - US Government agencies: 1 to 5 years 2,119 2,123 - - 5 to 10 years 17,904 17,716 - - More than 10 years 1,030 981 - - 21,053 20,820 - - State and political subdivisions: Within 1 year 1,053 1,059 4,506 4,553 1 to 5 years 31,941 31,930 13,850 14,514 5 to 10 years 23,653 23,403 21,192 22,676 More than 10 years 17,908 17,785 17,586 17,339 74,555 74,177 57,134 59,082 Corporate bonds: 1 to 5 years 233,481 233,597 - - 5 to 10 years 72,343 71,120 - - More than 10 years 1,000 675 - - 306,824 305,392 - - Asset-backed securities: 1 to 5 years 16,395 16,598 - - 5 to 10 years 334,071 335,031 - - More than 10 years 118,276 117,940 - - 468,742 469,569 - - Other: More than 10 years 1,182 1,182 - - 1,182 1,182 - - Total securities other than mortgage-backed securities: Within 1 year 1,053 1,059 4,506 4,553 1 to 5 years 400,029 399,950 13,850 14,514 5 to 10 years 502,238 501,184 21,192 22,676 More than 10 years 139,396 138,563 17,586 17,339 Mortgage-backed securities 1,397,435 1,391,682 272,709 274,088 $ 2,440,151 $ 2,432,438 $ 329,843 $ 333,170 Expected maturities may differ from contractual maturities because issuers and borrowers may have the right to call or prepay obligations.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans and Allowance for Credit Losses	(7) Loans and Allowance for Credit Losses Major classifications of loans are summarized as of the dates indicated as follows (in thousands) December 31, 2016 2015 Owner occupied commercial real estate $ 1,650,360 $ 1,570,988 Income producing commercial real estate 1,281,541 1,020,464 Commercial & industrial 1,069,715 784,870 Commercial construction 633,921 518,335 Total commercial 4,635,537 3,894,657 Residential mortgage 856,725 764,175 Home equity lines of credit 655,410 589,325 Residential construction 190,043 176,202 Consumer installment 123,567 115,111 Indirect auto 459,354 455,971 Total loans 6,920,636 5,995,441 Less allowance for loan losses (61,422 ) (68,448 ) Loans, net $ 6,859,214 $ 5,926,993 At December 31, 2016 and 2015, loans with a carrying value of $3.33 billion and $2.44 billion were pledged as collateral to secure FHLB advances and other contingent funding sources. At December 31, 2016, the carrying value and outstanding balance of PCI loans was $62.8 million and $87.9 million, respectively. At December 31, 2015, the carrying value and outstanding balance of PCI loans was $51.3 million and $71.0 million, respectively. The following table presents changes in the value of the accretable yield for PCI loans for the years ended December 31 (in thousands) 2016 2015 Balance at beginning of period $ 4,279 $ - Additions due to acquisitions 2,113 5,335 Accretion (4,223 ) (1,056 ) Reclassification from nonaccretable difference 3,321 - Changes in expected cash flows that do not affect nonaccretable difference 2,491 - Balance at end of period $ 7,981 $ 4,279 In addition to the accretable yield on PCI loans, the fair value adjustments on purchased loans outside the scope of ASC Topic 310-30 are also accreted to interest income over the life of the loans. At December 31, 2016 and 2015, the remaining accretable fair value mark on loans acquired through a business combination and not accounted for under ASC Topic 310-30 was $7.14 million and $7.03 million, respectively. In addition, indirect auto loans purchased at a premium outside of a business combination had a remaining premium of $11.4 million and $12.0 million, respectively, at December 31, 2016 and 2015. In the ordinary course of business, the Bank grants loans to executive officers, and directors of the holding company and the Bank, including their immediate families and companies with which they are associated. Management believes that such loans are made on substantially the same terms, including interest rate and collateral, as those prevailing at the time for comparable transactions with other customers. The following is a summary of such loans outstanding and the activity in these loans for the years ended December 31 (in thousands) 2016 2015 Balance at beginning of period $ 2,732 $ 3,204 New loans and advances 1 40 Repayments (301 ) (512 ) Balance at end of period $ 2,432 $ 2,732 The allowance for loan losses represents management’s estimate of probable incurred losses in the loan portfolio as of the end of the period. The allowance for unfunded commitments is included in other liabilities in the consolidated balance sheet. Combined, the allowance for loan losses and allowance for unfunded commitments are referred to as the allowance for credit losses. The following table presents the balance and activity in the allowance for credit losses by portfolio segment for the periods indicated (in thousands) Year Ended December 31, 2016 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,016 $ (2,029 ) $ 706 $ - $ (247 ) $ 16,446 Income producing commercial real estate 11,548 (1,433 ) 580 - (1,852 ) 8,843 Commercial & industrial 4,433 (1,830 ) 1,689 - (482 ) 3,810 Commercial construction 9,553 (837 ) 821 - 3,868 13,405 Residential mortgage 12,719 (1,151 ) 301 - (3,324 ) 8,545 Home equity lines of credit 5,956 (1,690 ) 386 - (53 ) 4,599 Residential construction 4,002 (533 ) 79 - (284 ) 3,264 Consumer installment 828 (1,459 ) 800 - 539 708 Indirect auto 1,393 (1,399 ) 233 - 1,575 1,802 Total allowance for loan losses 68,448 (12,361 ) 5,595 - (260 ) 61,422 Allowance for unfunded commitments 2,542 - - - (540 ) 2,002 Total allowance for credit losses $ 70,990 $ (12,361 ) $ 5,595 $ - $ (800 ) $ 63,424 Year Ended December 31, 2015 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,174 $ (2,901 ) $ 755 $ - $ 1,988 $ 18,016 Income producing commercial real estate 14,517 (1,280 ) 866 - (2,555 ) 11,548 Commercial & industrial 3,252 (1,358 ) 2,174 - 365 4,433 Commercial construction 10,901 (1,947 ) 736 - (137 ) 9,553 Residential mortgage 14,133 (1,615 ) 1,080 - (879 ) 12,719 Home equity lines of credit 4,476 (1,094 ) 242 - 2,332 5,956 Residential construction 4,374 (851 ) 173 - 306 4,002 Consumer installment 731 (1,597 ) 1,044 - 650 828 Indirect auto 1,061 (772 ) 86 - 1,018 1,393 Total allowance for loan losses 71,619 (13,415 ) 7,156 - 3,088 68,448 Allowance for unfunded commitments 1,930 - - - 612 2,542 Total allowance for credit losses $ 73,549 $ (13,415 ) $ 7,156 $ - $ 3,700 $ 70,990 Year Ended December 31, 2014 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,823 $ (4,567 ) $ 3,343 $ 1,278 $ (703 ) $ 18,174 Income producing commercial real estate 10,607 (2,671 ) 1,009 688 4,884 14,517 Commercial & industrial 6,504 (2,145 ) 1,665 318 (3,090 ) 3,252 Commercial construction 10,702 (1,574 ) 503 388 882 10,901 Residential mortgage 10,787 (5,011 ) 572 1,452 6,333 14,133 Home equity lines of credit 5,398 (2,314 ) 287 391 714 4,476 Residential construction 5,219 (1,837 ) 135 1,728 (871 ) 4,374 Consumer installment 1,353 (2,008 ) 1,221 - 165 731 Indirect auto 1,126 (540 ) 54 - 421 1,061 Unallocated 6,243 - - (6,243 ) - - Total allowance for loan losses 76,762 (22,667 ) 8,789 - 8,735 71,619 Allowance for unfunded commitments 2,165 - - - (235 ) 1,930 Total allowance for credit losses $ 78,927 $ (22,667 ) $ 8,789 $ - $ 8,500 $ 73,549 The following table presents the recorded investment in loans by portfolio segment and the balance of the allowance for loan losses assigned to each segment based on the method of evaluating the loans for impairment for the periods indicated (in thousands) Allowance for Loan Losses December 31, 2016 December 31, 2015 Individually Collectively PCI Ending Individually Collectively PCI Ending Owner occupied commercial real estate $ 1,746 $ 14,700 $ - $ 16,446 $ 1,788 $ 16,228 $ - $ 18,016 Income producing commercial real estate 885 7,919 39 8,843 1,705 9,843 - 11,548 Commercial & industrial 58 3,752 - 3,810 274 4,159 - 4,433 Commercial construction 168 13,218 19 13,405 138 9,415 - 9,553 Residential mortgage 517 7,997 31 8,545 2,818 9,901 - 12,719 Home equity lines of credit 2 4,597 - 4,599 6 5,950 - 5,956 Residential construction 64 3,198 2 3,264 55 3,947 - 4,002 Consumer installment 12 696 - 708 13 815 - 828 Indirect auto - 1,802 - 1,802 - 1,393 - 1,393 Total allowance for loan losses 3,452 57,879 91 61,422 6,797 61,651 - 68,448 Allowance for unfunded commitments - 2,002 - 2,002 - 2,542 - 2,542 Total allowance for credit losses $ 3,452 $ 59,881 $ 91 $ 63,424 $ 6,797 $ 64,193 $ - $ 70,990 Loans Outstanding December 31, 2016 December 31, 2015 Individually Collectively PCI Ending Individually Collectively PCI Ending Owner occupied commercial real estate $ 31,421 $ 1,600,355 $ 18,584 $ 1,650,360 $ 40,634 $ 1,516,532 $ 13,822 $ 1,570,988 Income producing commercial real estate 30,459 1,225,763 25,319 1,281,541 26,443 964,563 29,458 1,020,464 Commercial & industrial 1,915 1,066,764 1,036 1,069,715 3,278 780,937 655 784,870 Commercial construction 5,050 620,543 8,328 633,921 17,158 498,838 2,339 518,335 Residential mortgage 13,706 836,624 6,395 856,725 13,831 748,003 2,341 764,175 Home equity lines of credit 63 653,337 2,010 655,410 167 587,470 1,688 589,325 Residential construction 1,594 187,516 933 190,043 1,419 173,857 926 176,202 Consumer installment 290 123,118 159 123,567 329 114,741 41 115,111 Indirect auto 1,165 458,189 - 459,354 749 455,173 49 455,971 Total loans $ 85,663 $ 6,772,209 $ 62,764 $ 6,920,636 $ 104,008 $ 5,840,114 $ 51,319 $ 5,995,441 Management considers all non-PCI relationships that are on nonaccrual with a balance of $500,000 or greater and all TDRs to be impaired. In addition, management reviews all accruing substandard relationships greater than $2 million to determine if the loan is impaired. A loan is considered impaired when, based on current events and circumstances, it is probable that all amounts due according to the original contractual terms of the loan will not be collected. All TDRs are considered impaired regardless of accrual status. Impairment is measured based on the present value of expected future cash flows, discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. For TDRs less than $500,000, impairment is estimated based on the average impairment of TDRs greater than $500,000 by loan category. For loan types that do not have TDRs greater than $500,000, the average impairment for all TDR loans is used to quantify the amount of required specific reserve. A specific reserve is established for impaired loans for the amount of calculated impairment. Interest payments received on impaired nonaccrual loans are applied as a reduction of the outstanding principal balance. For impaired loans not on nonaccrual status, interest is accrued according to the terms of the loan agreement. Loans are evaluated for impairment quarterly and specific reserves are established in the allowance for loan losses for any measured impairment. Each quarter, management prepares an analysis of the allowance for credit losses to determine the appropriate balance that measures and quantifies the amount of probable incurred losses in the loan portfolio. The allowance is comprised of specific reserves on individually impaired loans, which are determined as described above, and general reserves which are determined based on historical loss experience as adjusted for current trends and economic conditions multiplied by a loss emergence period factor. Management calculates the loss emergence period for each pool of loans based on the weighted average length of time between the date a loan first exceeds 30 days past due and the date the loan is charged off. On junior lien home equity loans, management has limited ability to monitor the delinquency status of the first lien unless the first lien is also held by United. As a result, management applies the weighted average historical loss factor for this category and appropriately adjusts it to reflect the increased risk of loss from these credits. Management carefully reviews the resulting loss factors for each category of the loan portfolio and evaluates whether qualitative adjustments are necessary to take into consideration recent credit trends such as increases or decreases in past due, nonaccrual, criticized and classified loans, and other macro environmental factors such as changes in unemployment rates, lease vacancy rates and trends in property values and absorption rates. Management believes that its method of determining the balance of the allowance for credit losses provides a reasonable and reliable basis for measuring and reporting losses that are incurred in the loan portfolio as of the reporting date. When a loan officer determines that a loan is uncollectible, he or she is responsible for recommending that the loan be placed on nonaccrual status, evaluating the loan for impairment, and, if necessary, fully or partially charging off the loan. Full or partial charge-offs may also be recommended by the Collections Department, the Special Assets Department, the Loss Mitigation Department and the Foreclosure/OREO Department. Nonaccrual real estate loans that are collateral dependent are generally charged down to fair value less costs to sell at the time they are placed on nonaccrual status. Commercial and consumer asset quality committees consisting of the Chief Credit Officer, Senior Risk Officers and Senior Credit Officers meet monthly to review charge-offs that have occurred during the previous month. Generally, closed-end retail loans (installment and residential mortgage loans) past due 90 cumulative days are written down to their collateral value less estimated selling costs. Open-end unsecured (revolving) retail loans which are past due 90 cumulative days from their contractual due date are generally charged off. At December 31, 2016 and 2015, $870,000 and $827,000, respectively, in overdrawn deposit accounts were reclassified as commercial and industrial loans. The average balances of impaired loans and income recognized on impaired loans while they were considered impaired is presented below for the last three years (in thousands) 2016 2015 2014 Average Interest Cash Basis Average Interest Cash Basis Average Interest Cash Basis Owner occupied commercial real estate $ 33,297 $ 1,667 $ 1,704 $ 40,182 $ 1,970 $ 2,059 $ 35,641 $ 1,741 $ 1,804 Income producing commercial real estate 31,661 1,418 1,457 25,441 1,260 1,259 30,519 1,505 1,542 Commercial & industrial 2,470 123 118 4,299 163 260 4,226 172 228 Commercial construction 5,879 267 264 18,667 755 759 23,007 897 897 Total commercial 73,307 3,475 3,543 88,589 4,148 4,337 93,393 4,315 4,471 Residential mortgage 14,118 637 633 15,504 612 572 12,640 544 546 Home equity lines of credit 93 4 4 420 17 16 518 21 22 Residential construction 1,677 89 88 2,279 158 169 2,271 137 139 Consumer installment 302 22 23 223 16 16 305 19 22 Indirect auto 928 47 47 221 11 11 - - - Total $ 90,425 $ 4,274 $ 4,338 $ 107,236 $ 4,962 $ 5,121 $ 109,127 $ 5,036 $ 5,200 The following table presents loans individually evaluated for impairment by class of loans as of the dates indicated (in thousands) December 31, 2016 December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Owner occupied commercial real estate $ 9,171 $ 8,477 $ - $ 15,584 $ 15,251 $ - Income producing commercial real estate 16,864 16,864 - 13,044 12,827 - Commercial & industrial 421 334 - 493 469 - Commercial construction 845 841 - 3,731 3,429 - Total commercial 27,301 26,516 - 32,852 31,976 - Residential mortgage 630 628 - - - - Home equity lines of credit - - - - - - Residential construction - - - - - - Consumer installment - - - - - - Indirect auto 1,165 1,165 - 749 749 - Total with no related allowance recorded 29,096 28,309 - 33,601 32,725 - With an allowance recorded: Owner occupied commercial real estate 23,574 22,944 1,746 25,642 25,383 1,788 Income producing commercial real estate 13,681 13,595 885 13,850 13,616 1,705 Commercial & industrial 1,679 1,581 58 2,896 2,809 274 Commercial construction 4,739 4,209 168 14,237 13,729 138 Total commercial 43,673 42,329 2,857 56,625 55,537 3,905 Residential mortgage 13,565 13,078 517 14,178 13,831 2,818 Home equity lines of credit 63 63 2 167 167 6 Residential construction 1,947 1,594 64 1,465 1,419 55 Consumer installment 293 290 12 354 329 13 Indirect auto - - - - - - Total with an allowance recorded 59,541 57,354 3,452 72,789 71,283 6,797 Total $ 88,637 $ 85,663 $ 3,452 $ 106,390 $ 104,008 $ 6,797 Excluding PCI loans, there were no loans more than 90 days past due and still accruing interest at December 31, 2016 and 2015. Nonaccrual loans include both homogeneous loans that are collectively evaluated for impairment and individually evaluated impaired loans. United’s policy is to place loans on nonaccrual status, when, in the opinion of management, the principal and interest on a loan is not likely to be repaid in full or when the loan becomes 90 days past due and is not well secured and in the process of collection. When a loan is classified on nonaccrual status, interest previously accrued but not collected is reversed against current interest revenue. Principal and interest payments received on a nonaccrual loan are applied to reduce the loan’s recorded investment. PCI loans are considered past due or delinquent when the contractual principal or interest due in accordance with the terms of the loan agreement remains unpaid after the due date of the scheduled payment. However, these loans are considered as performing, even though they may be contractually past due, as any non-payment of contractual principal or interest is considered in the periodic re-estimation of expected cash flows and is included in the resulting recognition of current period loan loss provision or future period yield adjustments. No PCI loans were classified as nonaccrual at December 31, 2016 or 2015 as the carrying value of the respective loan or pool of loans cash flows were considered estimable and probable of collection. Therefore, interest revenue, through accretion of the difference between the carrying value of the loans and the expected cash flows, is being recognized on all PCI loans. The gross additional interest revenue that would have been earned if the loans classified as nonaccrual had performed in accordance with the original terms was approximately $975,000, $1.11 million, and $1.71 million for 2016, 2015, and 2014, respectively. The following table presents the recorded investment in nonaccrual loans by loan class as of the dates indicated (in thousands) December 31, 2016 2015 Owner occupied commercial real estate $ 7,373 $ 8,545 Income producing commercial real estate 1,324 3,768 Commercial & industrial 966 892 Commercial construction 1,538 1,378 Total commercial 11,201 14,583 Residential mortgage 6,368 5,873 Home equity lines of credit 1,831 851 Residential construction 776 348 Consumer installment 88 175 Indirect auto 1,275 823 Total $ 21,539 $ 22,653 The following table presents the aging of the recorded investment in past due loans by class of loans as of the dates indicated (in thousands) Loans Past Due Loans Not As of December 31, 2016 30 - 59 Days 60 - 89 Days > 90 Days Total Past Due PCI Loans Total Owner occupied commercial real estate $ 2,195 $ 1,664 $ 3,386 $ 7,245 $ 1,624,531 $ 18,584 $ 1,650,360 Income producing commercial real estate 1,373 355 330 2,058 1,254,164 25,319 1,281,541 Commercial & industrial 943 241 178 1,362 1,067,317 1,036 1,069,715 Commercial construction 452 14 292 758 624,835 8,328 633,921 Total commercial 4,963 2,274 4,186 11,423 4,570,847 53,267 4,635,537 Residential mortgage 7,221 1,799 1,700 10,720 839,610 6,395 856,725 Home equity lines of credit 1,996 101 957 3,054 650,346 2,010 655,410 Residential construction 950 759 51 1,760 187,350 933 190,043 Consumer installment 633 117 35 785 122,623 159 123,567 Indirect auto 1,109 301 909 2,319 457,035 - 459,354 Total loans $ 16,872 $ 5,351 $ 7,838 $ 30,061 $ 6,827,811 $ 62,764 $ 6,920,636 As of December 31, 2015 Owner occupied commercial real estate $ 4,211 $ 1,823 $ 2,546 $ 8,580 $ 1,548,586 $ 13,822 $ 1,570,988 Income producing commercial real estate 523 1,046 952 2,521 988,485 29,458 1,020,464 Commercial & industrial 858 88 489 1,435 782,780 655 784,870 Commercial construction 715 133 299 1,147 514,849 2,339 518,335 Total commercial 6,307 3,090 4,286 13,683 3,834,700 46,274 3,894,657 Residential mortgage 4,385 1,185 2,067 7,637 754,197 2,341 764,175 Home equity lines of credit 1,047 188 287 1,522 586,115 1,688 589,325 Residential construction 1,624 106 121 1,851 173,425 926 176,202 Consumer installment 610 115 83 808 114,262 41 115,111 Indirect auto 611 311 561 1,483 454,439 49 455,971 Total loans $ 14,584 $ 4,995 $ 7,405 $ 26,984 $ 5,917,138 $ 51,319 $ 5,995,441 The modification of the terms of TDRs included one or a combination of the following: a reduction of the stated interest rate of the loan or an extension of the amortization period that would not otherwise be considered in the current market for new debt with similar risk characteristics; a restructuring of the borrower’s debt into an A/B note structure where the A note would fall within the borrower’s ability to pay and the remainder would be included in the B note, or a mandated bankruptcy restructuring; or interest-only payment terms greater than 90 days where the borrower is unable to amortize the loan. Loans modified under the terms of a TDR during the years ended December 31, 2016, 2015 and 2014 are presented in the table below. In addition, the following table presents loans modified under the terms of a TDR that defaulted (became 90 days or more delinquent) during the years ended December 31, 2016, 2015 and 2014, that were initially restructured within one year prior to default (dollars in thousands) New TDRs Pre- Post- TDRs Modified Within the Year Ended December 31, 2016 Number of Recorded Rate Structure Other Total Number of Recorded Owner occupied commercial real estate 8 $ 2,699 $ - $ 2,699 $ - $ 2,699 1 $ 252 Income producing commercial real estate 1 257 - 257 - 257 - - Commercial & industrial 5 1,012 - 1,012 - 1,012 2 34 Commercial construction 3 458 - 393 65 458 - - Total commercial 17 4,426 - 4,361 65 4,426 3 286 Residential mortgage 28 3,262 1,992 1,135 40 3,167 1 85 Home equity lines of credit 1 38 38 - - 38 - - Residential construction 7 584 46 376 82 504 - - Consumer installment 6 71 13 58 - 71 - - Indirect auto 35 966 - - 966 966 - - Total loans 94 $ 9,347 $ 2,089 $ 5,930 $ 1,153 $ 9,172 4 $ 371 Year Ended December 31, 2015 Owner occupied commercial real estate 14 $ 13,592 $ - $ 13,266 $ 199 $ 13,465 1 $ 178 Income producing commercial real estate 7 2,135 45 2,090 - 2,135 - - Commercial & industrial 9 1,325 - 899 347 1,246 - - Commercial construction 2 580 - 580 - 580 - - Total commercial 32 17,632 45 16,835 546 17,426 1 178 Residential mortgage 32 2,847 144 2,369 334 2,847 1 2 Home equity lines of credit 2 187 - 177 - 177 - - Residential construction 4 222 - 198 - 198 - - Consumer installment 10 222 - 204 18 222 2 32 Indirect auto - - - - - - - - Total loans 80 $ 21,110 $ 189 $ 19,783 $ 898 $ 20,870 4 $ 212 Year Ended December 31, 2014 Owner occupied commercial real estate 12 $ 4,793 $ 229 $ 4,564 $ - $ 4,793 2 $ 346 Income producing commercial real estate 10 2,026 411 911 704 2,026 - - Commercial & industrial 9 1,185 216 969 - 1,185 2 54 Commercial construction 9 1,953 - 1,632 321 1,953 - - Total commercial 40 9,957 856 8,076 1,025 9,957 4 400 Residential mortgage 32 3,055 338 2,173 367 2,878 8 650 Home equity lines of credit 1 36 - - 36 36 - - Residential construction 1 138 - 138 - 138 - - Consumer installment 5 226 - 144 82 226 - - Indirect auto - - - - - - - - Total loans 79 $ 13,412 $ 1,194 $ 10,531 $ 1,510 $ 13,235 12 $ 1,050 The following table presents additional information on TDRs including the number of loan contracts restructured and the pre- and post-modification recorded investment as of the dates indicated (dollars in thousands) December 31, 2016 December 31, 2015 Number of Pre- Post- Number of Pre- Post- Owner occupied commercial real estate 63 $ 26,882 $ 26,192 68 $ 34,119 $ 33,633 Income producing commercial real estate 55 23,710 23,684 60 19,237 19,059 Commercial & industrial 16 1,515 1,429 25 2,894 2,809 Commercial construction 29 5,500 5,049 38 15,045 14,592 Total commercial 163 57,607 56,354 191 71,295 70,093 Residential mortgage 134 13,995 13,706 128 13,992 13,831 Home equity lines of credit 1 63 63 2 167 167 Residential construction 27 1,925 1,594 21 1,464 1,419 Consumer installment 19 292 290 22 348 329 Indirect auto 65 1,165 1,165 49 749 749 Total loans 409 $ 75,047 $ 73,172 413 $ 88,015 $ 86,588 Collateral dependent TDRs that subsequently default or are placed on nonaccrual are charged down to the fair value of the collateral consistent with United’s policy for nonaccrual loans. Impairment on TDRs that are not collateral dependent continues to be measured based on discounted cash flows regardless of whether the loan has subsequently defaulted. As of December 31, 2016 and 2015, United has allocated $2.90 million and $6.37 million, respectively, of specific reserves to customers whose loan terms have been modified in TDRs. United committed to lend additional amounts totaling up to $95,000 and $224,000 as of December 31, 2016 and 2015, respectively, to customers with outstanding loans that are classified as TDRs. Risk Ratings United categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, current industry and economic trends, among other factors. United analyzes loans individually by classifying the loans as to credit risk. This analysis is performed on a continuous basis. United uses the following definitions for its risk ratings: Watch Substandard. Doubtful. Loss. Consumer Purpose Loans Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. As of December 31, 2016 and 2015, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows (in thousands) As of December 31, 2016 Pass Watch Substandard Doubtful / Total Owner occupied commercial real estate $ 1,577,301 $ 18,029 $ 36,446 $ - $ 1,631,776 Income producing commercial real estate 1,220,626 8,502 27,094 - 1,256,222 Commercial & industrial 1,055,282 4,188 9,209 - 1,068,679 Commercial construction 612,900 6,166 6,527 - 625,593 Total commercial 4,466,109 36,885 79,276 - 4,582,270 Residential mortgage 829,844 - 20,486 - 850,330 Home equity lines of credit 647,425 - 5,975 - 653,400 Residential construction 185,643 - 3,467 - 189,110 Consumer installment 122,736 - 672 - 123,408 Indirect auto 456,717 - 2,637 - 459,354 Total loans, excluding PCI loans $ 6,708,474 $ 36,885 $ 112,513 $ - $ 6,857,872 Owner occupied commercial real estate $ 2,044 $ 3,444 $ 13,096 $ - $ 18,584 Income producing commercial real estate 13,236 8,474 3,609 - 25,319 Commercial & industrial 216 160 660 - 1,036 Commercial construction 3,212 1,265 3,851 - 8,328 Total commercial 18,708 13,343 21,216 - 53,267 Residential mortgage 5,189 - 1,206 - 6,395 Home equity lines of credit 1,094 - 916 - 2,010 Residential construction 898 - 35 - 933 Consumer installment 159 - - - 159 Indirect auto - - - - - Total PCI loans $ 26,048 $ 13,343 $ 23,373 $ - $ 62,764 As of December 31, 2015 Owner occupied commercial real estate $ 1,483,109 $ 25,926 $ 48,131 $ - $ 1,557,166 Income producing commercial real estate 956,168 7,439 27,399 - 991,006 Commercial & industrial 769,801 8,110 6,304 - 784,215 Commercial construction 499,649 6,943 9,404 - 515,996 Total commercial 3,708,727 48,418 91,238 - 3,848,383 Residential mortgage 740,129 31 21,674 - 761,834 Home equity lines of credit 581,385 24 6,228 - 587,637 Residential construction 171,961 - 3,315 - 175,276 Consumer installment 114,178 - 892 - 115,070 Indirect auto 453,935 - 1,987 - 455,922 Total loans, excluding PCI loans $ 5,770,315 $ 48,473 $ 125,334 $ - $ 5,944,122 Owner occupied commercial real estate $ 1,811 $ 6,808 $ 4,854 $ 349 $ 13,822 Income producing commercial real estate 9,378 6,073 14,007 - 29,458 Commercial & industrial 17 83 505 50 655 Commercial construction 1,698 45 596 - 2,339 Total commercial 12,904 13,009 19,962 399 46,274 Residential mortgage - - 2,341 - 2,341 Home equity lines of credit 214 - 1,474 - 1,688 Residential construction 345 - 69 512 926 Consumer installment 1 - 40 - 41 Indirect auto - - 49 - 49 Total PCI loans $ 13,464 $ 13,009 $ 23,935 $ 911 $ 51,319

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Premises and Equipment	(8) Premises and Equipment Premises and equipment are summarized as follows as of the dates indicated (in thousands) December 31, 2016 2015 Land and land improvements $ 79,946 $ 79,686 Buildings and improvements 135,004 127,493 Furniture and equipment 79,597 68,309 Construction in progress 5,747 3,787 300,294 279,275 Less accumulated depreciation (110,356 ) (101,110 ) Premises and equipment, net $ 189,938 $ 178,165 Depreciation expense was $11.5 million, $9.36 million and $8.66 million for 2016, 2015 and 2014, respectively. In 2015, United recognized $5.97 million of impairment on properties acquired in prior years for future expansion. The resulting impairment charge, which was included in merger-related and other charges in the Consolidated Statement of Income, was based on an assessment of the properties that showed evidence that the carrying value may not be recoverable and exceeded the fair value. United leases certain branch properties and equipment under operating leases. Rent expense was $4.13 million, $2.72 million and $2.14 million for 2016, 2015 and 2014, respectively. United does not have any capital leases. As of December 31, 2016, rent commitments under operating leases, before considering renewal options that generally are present, were as follows (in thousands) 2017 $ 4,028 2018 3,663 2019 3,545 2020 3,419 2021 3,284 Thereafter 11,151 Total $ 29,090

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	(9) Goodwill and Other Intangible Assets The carrying amount of goodwill and other intangible assets is summarized below as of the dates indicated (in thousands) December 31, 2016 2015 Core deposit intangible $ 51,342 $ 49,772 Less: accumulated amortization (37,145 ) (32,964 ) Total intangibles subject to amortization, net 14,197 16,808 Goodwill 142,025 130,612 Total goodwill and other intangible assets, net $ 156,222 $ 147,420 The following is a summary of changes in the carrying amounts of goodwill for the years indicated (in thousands) Goodwill, net of Accumulated Accumulated Impairment Impairment Goodwill Losses Losses December 31, 2014 $ 307,099 $ (305,590 ) $ 1,509 Acquisition of Palmetto 114,402 - 114,402 Acquisition of MoneyTree 14,701 - 14,701 December 31, 2015 436,202 (305,590 ) 130,612 Acquisition of Tidelands 10,713 - 10,713 Measurement period adjustments 700 - 700 December 31, 2016 $ 447,615 $ (305,590 ) $ 142,025 The amortization expense for intangibles subject to amortization for 2016, 2015 and 2014 was $4.18 million, $2.44 million and $1.35 million, respectively, which was recognized in operating expenses. The estimated aggregate amortization expense for future periods is as follows (in thousands) Year 2017 $ 3,413 2018 2,690 2019 2,171 2020 1,678 2021 1,214 Thereafter 3,031 Total $ 14,197

Foreclosed Property

Foreclosed Property	12 Months Ended
	Dec. 31, 2016
Repossessed Assets [Abstract]
Foreclosed Property	(10) Foreclosed Property Major classifications of foreclosed properties at December 31, 2016 and 2015 are summarized as follows (in thousands) 2016 2015 Commercial real estate $ 3,181 $ 2,652 Commercial construction 2,977 437 Total commercial 6,158 3,089 Residential mortgage 1,791 1,322 Residential construction - 472 Total foreclosed property $ 7,949 $ 4,883

Servicing Rights

Servicing Rights	12 Months Ended
	Dec. 31, 2016
Transfers and Servicing [Abstract]
Servicing Rights	(11) Servicing Rights Servicing Rights for Government Guaranteed Loans United accounts for servicing rights for government guaranteed loans at fair value. Changes in the balances of servicing assets and servicing liabilities are as follows for the years indicated (in thousands) 2016 2015 2014 Servicing rights for government guaranteed loans, beginning of period $ 3,712 $ 2,551 $ - Additions: Acquired servicing rights - 137 2,133 Originated servicing rights capitalized upon sale of loans 2,723 1,699 832 Subtractions: Disposals (393 ) (353 ) (152 ) Changes in fair value: Due to change in valuation inputs or assumptions used in the valuation model (290 ) (322 ) (262 ) Servicing rights for government guaranteed loans, end of period $ 5,752 $ 3,712 $ 2,551 The portfolio of government guaranteed loans serviced for others, which is not included in the accompanying balance sheets, was $256 million and $151 million, respectively, at December 31, 2016 and 2015. The amount of contractually specified servicing fees earned by United on these servicing rights during the years ended December 31, 2016, 2015 and 2014 was $1.64 million, $1.07 million and $513,000, respectively. Servicing fees and changes in fair value were included in interest revenue in the Consolidated Statement of Income. A summary of the key characteristics, inputs, and economic assumptions used to estimate the fair value of the servicing asset for government guaranteed loans and the sensitivity of the fair values to immediate adverse changes in those assumptions are shown in the table below as of the dates indicated (in thousands) December 31, 2016 2015 Fair value of retained servicing assets $ 5,752 $ 3,712 Prepayment rate assumption 7.12 % 6.95 % 10% adverse change $ (132 ) $ (84 ) 20% adverse change $ (257 ) $ (163 ) Discount rate 11.0 % 11.8 % 100 bps adverse change $ (167 ) $ (109 ) 200 bps adverse change $ (324 ) $ (212 ) Weighted-average life (years) 6.8 6.7 Weighted-average gross margin 1.86 % 2.02 % The above sensitivities are hypothetical and changes in fair value based on variations in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, in this table, the effect of a variation in a particular assumption on the fair value of the retained interest is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another, which might magnify or counteract the sensitivities. Residential Mortgage Servicing Rights United accounts for residential mortgage servicing rights using the amortization method. The following table summarizes the changes in residential mortgage servicing rights for the years indicated ( in thousands 2016 2015 Residential mortgage servicing rights, net of valuation allowance, beginning of period $ 3,370 $ - Additions: Acquired servicing rights - 3,454 Originated servicing rights capitalized upon sale of loans 2,124 199 Subtractions: Amortization (1,117 ) (273 ) Impairment (5 ) (10 ) Residential mortgage servicing rights, net of valuation allowance, end of period $ 4,372 $ 3,370 The estimated fair value of residential mortgage servicing rights was $5.17 million and $3.52 million, respectively, at December 31, 2016 and 2015. The following table summarizes the activity in the valuation allowance for impairment of the residential mortgage servicing rights portfolio for the years indicated ( in thousands 2016 2015 Valuation allowance, beginning of period $ 10 $ - Additions charged to operations, net 5 10 Valuation allowance, end of period $ 15 $ 10 The portfolio of residential mortgage loans serviced for others, which is not included in the consolidated balance sheet, was $543 million and $377 million, respectively, at December 31, 2016 and 2015. The amount of contractually specified servicing fees earned by United on these servicing rights during the year ended December 31, 2016 and 2015 was $1.03 million and $299,000, respectively, which was included in interest revenue in the Consolidated Statement of Income. Impairment and amortization of servicing rights were included in mortgage loan and other related fee revenue in the Consolidated Statement of Income. The following table summarizes the estimated future amortization expense of residential mortgage servicing rights during the years indicated ( in thousands 2017 $ 1,081 2018 876 2019 706 2020 564 2021 447 thereafter 698 $ 4,372

Deposits

Deposits	12 Months Ended
	Dec. 31, 2016
Deposits [Abstract]
Deposits	(12) Deposits At December 31, 2016, the contractual maturities of time deposits, including brokered time deposits, are summarized as follows (in thousands) 2017 $ 990,154 2018 172,710 2019 58,730 2020 32,488 2021 35,453 thereafter 87,471 $ 1,377,006 At December 31, 2016 and 2015, time deposits (excluding brokered time deposits) that met or exceeded the FDIC insurance limit of $250,000 totaled $144 million and $139 million, respectively. At December 31, 2016 and 2015, United held $89.9 million and $234 million, respectively, in certificates of deposit obtained through third party brokers. The daily average balance of these brokered deposits totaled $171 million and $269 million in 2016 and 2015, respectively. The brokered certificates of deposit at December 31, 2016 had maturities ranging from 2018 through 2033 and are callable by United. United has certain market-linked brokered deposits that are considered hybrid instruments that contain embedded derivatives that have been bifurcated from the host contract leaving host instruments paying a rate of 90 day LIBOR minus a spread that results in a negative yield.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2016
Advances from Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	(13) Federal Home Loan Bank Advances At December 31, 2016 and 2015, United had FHLB advances totaling $709 million and $430 million, respectively. The advances outstanding at December 31, 2016 had maturities in 2017 with interest rates ranging from .48% to 3.95%. At December 31, 2016, the weighted average interest rate on FHLB advances was .67%, compared to .49% as of December 31, 2015. The FHLB advances are collateralized by owner occupied and income producing commercial real estate and residential mortgage loans, investment securities and FHLB stock.

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2016
Long-term Debt, Unclassified [Abstract]
Long-term Debt	(14) Long-term Debt Long-term debt consisted of the following (in thousands) Stated Earliest December 31, Issue Maturity Call 2016 2015 Date Date Date Interest Rate 2017 senior debentures $ 35,000 $ 35,000 2012 2017 2017 9.000% 2018 senior debentures 40,000 40,000 2013 2018 2015 6.000% 2022 senior debentures 50,000 50,000 2015 2022 2020 5.000% through August 13, 2020, 3-month LIBOR plus 3.814% thereafter 2027 senior debentures 35,000 35,000 2015 2027 2025 5.500% through August 13, 2025 3-month LIBOR plus 3.71% thereafter Total senior debentures 160,000 160,000 Southern Bancorp Capital Trust I 4,382 4,382 2004 2034 2009 Prime + 1.00% United Community Statutory Trust III 1,238 1,238 2008 2038 2013 Prime + 3.00% Tidelands Statutory Trust I 8,248 - 2006 2036 2011 3-month LIBOR plus 1.38% Tidelands Statutory Trust II 6,186 - 2008 2038 2013 3-month LIBOR plus 5.075% Total trust preferred securities 20,054 5,620 Less discount (4,976 ) (1,784 ) Total long-term debt $ 175,078 $ 163,836 Interest is currently paid semiannually or quarterly for all senior debentures and trust preferred securities. Senior Debentures The 2017 senior debentures are not redeemable prior to maturity and will mature on October 15, 2017. The 2018 senior debentures are redeemable at a redemption price equal to 100% of the principal amount plus any accrued and unpaid interest, and will mature on August 13, 2018 if not redeemed prior to that date. The 2022 senior debentures are redeemable, in whole or in part, on or after August 14, 2020 at a redemption price equal to 100% of the principal amount to be redeemed plus any accrued and unpaid interest, and will mature on February 14, 2022 if not redeemed prior to that date. The 2027 senior debentures are redeemable, in whole or in part, on or after August 14, 2025 at a redemption price equal to 100% of the principal amount to be redeemed plus any accrued and unpaid interest, and will mature on February 14, 2027 if not redeemed prior to that date. Trust Preferred Securities Trust preferred securities qualify as Tier 1 capital under risk based capital guidelines subject to certain limitations. The trust preferred securities are mandatorily redeemable upon maturity, or upon earlier redemption as provided in the indentures.

Reclassifications Out of Accumu

Reclassifications Out of Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2016
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Reclassifications Out of Accumulated Other Comprehensive Income	(15) Reclassifications Out of Accumulated Other Comprehensive Income The following presents the details regarding amounts reclassified out of accumulated other comprehensive income (in thousands). Amounts Reclassified from Accumulated Details about Accumulated Other Other Comprehensive Income Affected Line Item in the Statement Comprehensive Income Components 2016 2015 2014 Where Net Income is Presented Realized gains on available-for-sale securities: $ 982 $ 2,255 $ 4,871 Securities gains, net (371 ) (862 ) (1,902 ) Tax expense $ 611 $ 1,393 $ 2,969 Net of tax Amortization of losses included in net income on available-for-sale securities transferred to held to maturity: $ (1,759 ) $ (1,702 ) $ (1,656 ) Investment securities interest revenue 662 638 622 Tax benefit $ (1,097 ) $ (1,064 ) $ (1,034 ) Net of tax Amounts included in net income on derivative financial instruments accounted for as cash flow hedges: Effective portion of interest rate contracts $ - $ - $ (764 ) Time deposit interest expense Effective portion of interest rate contracts - - (223 ) Money market deposit interest expense Amortization of losses on de-designated positions (7 ) (129 ) (79 ) Deposits in banks and short-term investments interest revenue Amortization of losses on de-designated positions (647 ) (695 ) (198 ) Money market deposit interest expense Amortization of losses on de-designated positions (1,237 ) (1,112 ) (234 ) Federal Home Loan Bank advances interest expense Amortization of losses on de-designated positions - - (512 ) Time deposit interest expense (1,891 ) (1,936 ) (2,010 ) Total before tax 736 753 782 Tax benefit $ (1,155 ) $ (1,183 ) $ (1,228 ) Net of tax Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan Prior service cost $ (501 ) $ (465 ) $ (365 ) Salaries and employee benefits expense Actuarial losses (354 ) (271 ) - Salaries and employee benefits expense (855 ) (736 ) (365 ) Total before tax 333 286 142 Tax benefit $ (522 ) $ (450 ) $ (223 ) Net of tax Total reclassifications for the period $ (2,163 ) $ (1,304 ) $ 484 Net of tax Amounts shown above in parentheses reduce earnings

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	(16) Earnings Per Share United is required to report on the face of the Consolidated Statement of Income, earnings per common share with and without the dilutive effects of potential common stock issuances from instruments such as options, convertible securities and warrants. Basic earnings per common share is based on the weighted average number of shares of common stock outstanding during the period while the effects of potential shares of common stock outstanding during the period are included in diluted earnings per common share. United accrued dividends on preferred stock, including accretion of discounts, as shown in the following table for the years indicated ( in thousands) Year Ended December 31, 2016 2015 2014 Series B - 5% fixed until December 6, 2013, 9% thereafter $ - $ - $ 159 Series D - LIBOR plus 9.6875%, resets quarterly - - 280 Series H - 1% until March 15, 2016, 9% thereafter 21 67 - Total preferred stock dividends $ 21 $ 67 $ 439 The preferred stock dividends were subtracted from net income in order to arrive at net income available to common shareholders. The following table sets forth the computation of basic and diluted net income per common share for the years indicated (in thousands, except per share data) Year Ended December 31, 2016 2015 2014 Net income available to common stockholders $ 100,635 $ 71,511 $ 67,181 Income per common share: Basic $ 1.40 $ 1.09 $ 1.11 Diluted 1.40 1.09 1.11 Weighted average common shares: Basic 71,910 65,488 60,588 Effect of dilutive securities: Stock options 5 4 2 Diluted 71,915 65,492 60,590 At December 31, 2016, United had the following potentially dilutive stock options and warrants outstanding: a warrant to purchase 219,909 shares of common stock at $61.40 per share; 72,665 shares of common stock issuable upon exercise of stock options granted to employees with a weighted average exercise price of $34.34; and 690,970 shares of common stock issuable upon completion of vesting of restricted stock awards. At December 31, 2015, United had the following potentially dilutive stock options and warrants outstanding: a warrant to purchase 219,909 shares of common stock at $61.40 per share; 241,493 shares of common stock issuable upon exercise of stock options granted to employees with a weighted average exercise price of $89.92; and 712,667 shares of common stock issuable upon completion of vesting of restricted stock awards. At December 31, 2014, United had the following potentially dilutive stock options and warrants outstanding: a warrant to purchase 219,909 shares of common stock at $61.40 per share; 313,555 shares of common stock issuable upon exercise of stock options granted to employees with a weighted average exercise price of $93.40; and 829,201 shares of common stock issuable upon completion of vesting of restricted stock awards.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Taxes [Abstract]
Income Taxes	(17) Income Taxes Income tax expense is as follows for the years indicated (in thousands) Year Ended December 31, 2016 2015 2014 Current $ 2,609 $ 5,140 $ 1,224 Deferred 59,160 37,685 37,524 Increase in valuation allowance 567 611 702 Total income tax expense $ 62,336 $ 43,436 $ 39,450 The differences between the provision for income taxes and the amount computed by applying the statutory federal income tax rate of 35% to income before income taxes are as follows for the years indicated (in thousands) Year Ended December 31, 2016 2015 2014 Pretax income at statutory rates $ 57,047 $ 40,255 $ 37,475 Add (deduct): State taxes, net of federal benefit 5,013 3,537 3,365 Bank owned life insurance earnings (572 ) (348 ) (209 ) Adjustment to reserve for uncertain tax positions (58 ) (136 ) (200 ) Tax-exempt interest revenue (573 ) (662 ) (757 ) Equity compensation 976 - - Transaction costs 92 509 - Tax credits (149 ) (190 ) (250 ) Change in state statutory tax rate 250 340 - Increase in valuation allowance 567 611 702 Other (257 ) (480 ) (676 ) Total income tax expense $ 62,336 $ 43,436 $ 39,450 The following summarizes the sources and expected tax consequences of future taxable deductions (revenue) which comprise the net deferred tax asset as of the dates indicated (in thousands) December 31, 2016 2015 Deferred tax assets: Allowance for loan losses $ 23,025 $ 25,840 Net operating loss carryforwards 112,805 155,757 Deferred compensation 9,778 8,727 Loan purchase accounting adjustments 10,529 7,940 Reserve for losses on foreclosed properties 822 2,025 Nonqualified share based compensation 1,567 3,628 Accrued expenses 4,420 3,990 Investment in partnerships 1,417 1,814 Unamortized pension actuarial losses and prior service cost 2,365 2,151 Unrealized losses on securities available-for-sale 3,982 2,943 Unrealized losses on cash flow hedges 561 1,351 Derivatives 609 936 Premises and equipment 764 - Other 2,965 2,174 Total deferred tax assets 175,609 219,276 Deferred tax liabilities: Acquired intangible assets 3,485 5,034 Premises and equipment - 398 Loan origination costs 5,885 5,030 Prepaid expenses 689 729 Servicing asset 3,437 2,208 Uncertain tax positions 3,892 3,981 Total deferred tax liabilities 17,388 17,380 Less valuation allowance 3,885 4,283 Net deferred tax asset $ 154,336 $ 197,613 The change in the net deferred tax asset includes an increase of $16.1 million due to current year merger and acquisition activity. At December 31, 2016, United has state net operating loss carryforwards of approximately $3.73 million that begin to expire in 2018, $286,000 that begin to expire in 2019, $8.18 million that begin to expire in 2026, and $450 million that begin to expire in 2030, if not previously utilized. United has $183 million in federal net operating loss carryforwards that begin to expire in 2031, if not previously utilized. United has $37.6 million in federal net operating loss carryforwards subject to annual limitation under IRC Section 382 that begin to expire in 2029, if not previously utilized. United has $3.16 million of federal general business tax credits that begin to expire in 2028, if not previously utilized. United has $10.2 million of federal alternative minimum tax credits which have no expiration date. United has $2.07 million of federal alternative minimum tax credits subject to annual limitation under IRC Section 382 which have no expiration date. United has $6.46 million of state tax credits that begin to expire in 2017, if not previously utilized. Management assesses the valuation allowance recorded against deferred tax assets at each reporting period. The determination of whether a valuation allowance for deferred tax assets is appropriate is subject to considerable judgment and requires an evaluation of all the positive and negative evidence. Accounting Standards Codification Topic 740, Income Taxes At December 31, 2016 and 2015, based on the assessment of all the positive and negative evidence, management concluded that it is more likely than not that nearly all of the net deferred tax asset will be realized based upon future taxable income. The valuation allowance of $3.88 million is related to specific state income tax credits that have short carryforward periods and an acquired state net operating loss, both of which are expected to expire unused. The valuation allowance could fluctuate in future periods based on the assessment of the positive and negative evidence. Management’s conclusion at December 31, 2016 that it was more likely than not that the net deferred tax asset of $154 million will be realized is based on management’s estimate of future taxable income. Management’s estimate of future taxable income is based on internal forecasts which consider historical performance, various internal estimates and assumptions, as well as certain external data all of which management believes to be reasonable although inherently subject to significant judgment. If actual results differ significantly from the current estimates of future taxable income, even if caused by adverse macro-economic conditions, the valuation allowance may need to be increased for some or all the deferred tax asset. Such an increase to the deferred tax asset valuation allowance could have a material adverse effect on United’s financial condition and results of operations. A reconciliation of the beginning and ending unrecognized tax benefit related to uncertain tax positions is as follows for the years indicated (in thousands) 2016 2015 2014 Balance at beginning of year $ 3,981 $ 4,195 $ 4,503 Additions based on tax positions related to the current year 400 371 374 Decreases resulting from a lapse in the applicable statute of limitations (489 ) (585 ) (682 ) Balance at end of year $ 3,892 $ 3,981 $ 4,195 Approximately $3.25 million of this amount would increase income from continuing operations, and thus affect United’s effective tax rate, if ultimately recognized into income. It is United’s policy to recognize interest and penalties accrued relative to unrecognized tax benefits in their respective federal or state income taxes accounts. No previously recorded penalties and interest were reversed in 2016, 2015 or 2014. No amounts were accrued for interest and penalties at December 31, 2016 or 2015. United

Pension and Employee Benefit Pl

Pension and Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Pension and Employee Benefit Plans [Abstract]
Pension and Employee Benefit Plans	(18) Pension and Employee Benefit Plans United offers a defined contribution 401(k) and Profit Sharing Plan (the “401(k) Plan”) that covers substantially all employees meeting certain minimum service requirements. The Plan allows employees to make pre-tax contributions to the 401(k) Plan and, prior to April 1, 2016, United matched 50% of these employee contributions up to 5% of eligible compensation, subject to Plan and regulatory limits. Effective April 1, 2016, the matching contribution was increased to 70% of employee contributions up to 5% of eligible compensation. Employees begin to receive matching contributions after completing one year of service and benefits vest after three years of service. United’s Plan is administered in accordance with applicable laws and regulations. Compensation expense from continuing operations related to the 401(k) Plan totaled $2.28 million, $1.45 million and $1.20 million in 2016, 2015 and 2014, respectively. The 401(k) Plan allows employees to choose to invest among a number of investment options that previously included United’s common stock. Effective January 1, 2015, United’s common stock was no longer offered as an investment option for new contributions. During 2014, the 401(k) Plan purchased 17,373 common shares directly from United at the average of the high and low stock price on the date of purchase. United sponsors a non-qualified deferred compensation plan for its executive officers, certain other key employees and members of United’s Board of Directors and its community banks’ advisory boards of directors. The deferred compensation plan provides for the pre-tax deferral of compensation, fees and other specified benefits. The deferred compensation plan also permits each employee participant to elect to defer a portion of his or her base salary, bonus or vested restricted stock units and permits each director participant to elect to defer all or a portion of his or her director’s fees. Further, the deferred compensation plan allows for additional contributions by an employee, with matching contributions by United, for amounts that exceed the allowable amounts under the 401(k) Plan. During 2016, 2015 and 2014, United recognized $26,000, $21,000 and $24,000, respectively, in matching contributions for this provision of the deferred compensation plan. The Board of Directors may also elect to make a discretionary contribution to any or all participants. No discretionary contributions were made in 2016, 2015 or 2014. Defined Benefit Pension Plans United has an unfunded noncontributory defined benefit pension plan (“Modified Retirement Plan”) that covers certain executive officers and other key employees. The Modified Retirement Plan provides a fixed annual retirement benefit to plan participants. United acquired Palmetto on September 1, 2015, including its funded noncontributory defined benefit pension plan (“Funded Plan”), which covered all full-time Palmetto employees who had fulfilled at least 12 months of continuous service and attained age 21 by December 31, 2007. Benefits under the Funded Plan are no longer accrued for service subsequent to 2007. Weighted-average assumptions used to determine pension benefit obligations at year end and net periodic pension cost are shown in the table below: 2016 2015 Modified Modified Retirement Funded Retirement Funded Plan Plan Plan Plan Discount rate for disclosures 4.00 % 4.25 % 4.25 % 4.53 % Discount rate for net periodic benefit cost 4.00 % 4.53 % 4.00 % 4.50 % Expected long-term rate of return N/A 4.00 % N/A 6.30 % Rate of compensation increase N/A N/A N/A N/A Measurement date 12/31/2016 12/31/2016 12/31/2015 12/31/2015 The discount rate is determined in consultation with the third-party actuary and is set by matching the projected benefit cash flow to a notional yield curve consisting of bonds monitored by the third-party actuary. The yield curve provides transparency with respect to the underlying bonds and provides matching of future benefit obligations to the payment of benefits. The expected long-term rate of return is designed to approximate the actual long-term rate of return over time. Therefore, the pattern of income / expense recognition should match the stable pattern of services provided by employees over the life of the pension obligation. Expected returns on plan assets are developed in conjunction with input from external advisors and take into account the investment policy, actual investment allocation, long-term expected rates of return on the relevant asset classes and considers any material forward-looking return expectations for these major asset classes. United recognizes the underfunded status of the plans as a liability in the consolidated balance sheet. Information about changes in obligations and plan assets follows (in thousands) 2016 2015 Modified Modified Retirement Funded Retirement Funded Plan Plan Plan Plan Accumulated benefit obligation: Accumulated benefit obligation - beginning of year $ 17,595 $ 19,246 $ 15,869 $ - Business combinations - - - 19,620 Service cost 382 - 376 - Interest cost 740 842 628 292 Plan amendments 454 - 1,353 - Actuarial (gains) losses 605 347 (297 ) 136 Benefits paid (368 ) (1,934 ) (334 ) (802 ) Accumulated benefit obligation - end of year 19,408 18,501 17,595 19,246 Change in plan assets, at fair value: Beginning plan assets - 17,315 - - Business combinations - - - 18,028 Actual return - 883 - 89 Employer contribution 368 - 334 - Benefits paid (368 ) (1,934 ) (334 ) (802 ) Plan assets - end of year - 16,264 - 17,315 Funded status - end of year (plan assets less benefit obligations) $ (19,408 ) $ (2,237 ) $ (17,595 ) $ (1,931 ) Components of net periodic benefit cost and other amounts recognized in other comprehensive income (in thousands): 2016 2015 2014 Modified Modified Modified Retirement Funded Retirement Funded Retirement Plan Plan Plan Plan Plan Service cost $ 382 $ - $ 376 $ - $ 341 Interest cost 740 842 628 292 579 Expected return on plan assets - (696 ) - (375 ) - Amortization of prior service cost 501 - 465 - 365 Amortization of net losses 167 - 271 - - Net periodic benefit cost $ 1,790 $ 146 $ 1,740 $ (83 ) $ 1,285 The estimated net loss and prior service costs for the Modified Retirement Plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year are $223,000 and $568,000, respectively, as of December 31, 2016. For the Funded Plan, United does not expect to amortize any estimated net loss or prior service costs from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year. In 2017 United expects to make contributions to the Modified Retirement Plan of $419,000, but does not expect to make any contributions to the Funded Plan. The following table summarizes the estimated future benefit payments expected to be paid from the plans for the periods indicated (in thousands) Modified Retirement Funded Plan Plan 2017 $ 419 $ 1,072 2018 1,072 1,107 2019 1,066 1,122 2020 1,149 1,127 2021 1,142 1,154 2022-2026 5,638 5,654 $ 10,486 $ 11,236 The following table summarizes the Funded Plan assets by major category as of the dates indicated, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands) December 31, 2016 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 645 $ - $ - $ 645 Mutual funds 874 - - 874 Corporate stocks 1,184 193 - 1,377 Exchange traded funds 13,368 - - 13,368 Total plan assets $ 16,071 $ 193 $ - $ 16,264 December 31, 2015 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 2,346 $ - $ - $ 2,346 Mutual funds 857 - - 857 Corporate stocks 1,178 - - 1,178 Exchange traded funds 12,902 - - 12,902 Other 32 - - 32 Total plan assets $ 17,315 $ - $ - $ 17,315 The investment objectives of the plan assets are designed to fund the projected benefit obligation and to maximize returns in order to minimize contributions within reasonable and prudent levels of risk. The precise amount for which these obligations will be settled depends on future events, including the life expectancy of the plan participants. The plan’s investment strategy balances the requirement to generate return, using higher returning assets, with the need to control risk using less volatile assets. Risks include, but are not limited to, inflation, volatility in equity values and changes in interest rates that could cause the plan to become underfunded, thereby increasing the plan’s dependence on contributions from United. Plan assets are managed by a third-party firm as approved by United’s Employee Benefits Committee. The Board of Directors delegated certain responsibilities to the Employee Benefits Committee including maintaining the investment policy of the plan, approving the appointment of the investment manager and reviewing the performance of the plan assets at least annually. Investments within the plan are diversified with the intent to minimize the risk of large losses to the plan. The total portfolio is constructed and maintained to provide prudent diversification within each investment category, and United assumes that the volatility of the portfolio will be similar to the market as a whole. The asset allocation ranges represent a long-term perspective. Therefore, rapid unanticipated market shifts may cause the asset mix to fall outside the policy range. Such divergences are expected to be short-term in nature. For fair value measurement, cash and cash equivalents are valued at carrying value. Mutual funds, corporate stocks, and exchange traded funds are valued at the closing price reported in the active market in which the instrument is traded. See Note 24 for more details regarding fair value measurements and the fair value hierarchy. The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, although management believes the valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2016
Derivatives and Hedging Activities [Abstract]
Derivatives and Hedging Activities	(19) Derivatives and Hedging Activities Risk Management Objective of Using Derivatives United is exposed to certain risks arising from both its business operations and economic conditions. United principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. United manages interest rate risk primarily by managing the amount, sources, and duration of its investment securities portfolio and wholesale funding and through the use of derivative financial instruments. Specifically, United enters into derivative financial instruments to manage interest rate risk exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Derivative financial instruments are used to manage differences in the amount, timing, and duration of known or expected cash receipts and known or expected cash payments principally related to loans, investment securities, wholesale borrowings and deposits. In conjunction with the FASB’s fair value measurement guidance, United made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting arrangements on a gross basis. The table below presents the fair value of derivative financial instruments as of the dates indicated as well as their classification on the consolidated balance sheet (in thousands) Derivatives designated as hedging instruments under ASC 815 Fair Value Balance Sheet December 31, Interest Rate Products Location 2016 2015 Fair value hedge of corporate bonds Derivative assets $ 265 $ 31 $ 265 $ 31 Fair value hedge of brokered CD’s Derivative liabilities $ 1,980 $ 2,169 $ 1,980 $ 2,169 Derivatives not designated as hedging instruments under ASC 815 Fair Value Balance Sheet December 31, Interest Rate Products Location 2016 2015 Customer derivative positions Derivative assets $ 5,266 $ 6,185 Dealer offsets to customer derivative positions Derivative assets 3,869 31 Mortgage banking - loan commitment Derivative assets 1,552 188 Mortgage banking - forward sales commitment Derivative assets 534 1 Bifurcated embedded derivatives Derivative assets 10,225 9,230 Offsetting positions for de-designated cash flow hedges Derivative assets 1,977 4,416 $ 23,423 $ 20,051 Customer derivative positions Derivative liabilities $ 3,897 $ 31 Dealer offsets to customer derivative positions Derivative liabilities 5,328 6,339 Risk participations Derivative liabilities 26 - Mortgage banking - forward sales commitment Derivative liabilities 96 22 Dealer offsets to bifurcated embedded derivatives Derivative liabilities 14,341 15,794 De-designated cash flow hedges Derivative liabilities 1,980 4,470 $ 25,668 $ 26,656 Customer derivative positions are between United and certain commercial loan customers with offsetting positions to dealers under a back-to-back swap/cap program. United also has three interest rate swap contracts that are not designated as hedging instruments but are economic hedges of market linked brokered certificates of deposit. The market linked brokered certificates of deposit contain embedded derivatives that are bifurcated from the host instruments and marked to market through earnings. The marks on the market linked swaps and the bifurcated embedded derivatives tend to move in opposite directions with changes in 90-day LIBOR and therefore provide an economic hedge. To accommodate customers, United occasionally enters into credit risk participation agreements with counterparty banks to accept a portion of the credit risk related to interest rate swaps. This allows customers to execute an interest rate swap with one bank while allowing for the distribution of the credit risk among participating members. Credit risk participation agreements arise when United contracts with other financial institutions, as a guarantor, to share credit risk associated with certain interest rate swaps. These agreements provide for reimbursement of losses resulting from a third party default on the underlying swap. These transactions are typically executed in conjunction with a participation in a loan with the same customer. Collateral used to support the credit risk for the underlying lending relationship is also available to offset the risk of the credit risk participation. In addition, United originates certain residential mortgage loans with the intention of selling these loans. Between the time United enters into an interest-rate lock commitment to originate a residential mortgage loan that is to be held for sale and the time the loan is funded and eventually sold, the Company is subject to the risk of variability in market prices. United also enters into forward sale agreements to mitigate risk and to protect the expected gain on the eventual loan sale. Most of this activity is on a matched basis, with a loan sale commitment hedging a specific loan. The commitments to originate residential mortgage loans and forward loan sales commitments are freestanding derivative instruments. The underlying loans are accounted for under the lower of cost or fair value method and are not reflected in the table above. Beginning late in the third quarter of 2016 for newly originated mortgage loans, United began to account for the underlying loans at fair value pursuant to the fair value option, and these loans are not reflected in the table above. Fair value adjustments on these derivative instruments are recorded within mortgage loan and other related fee income in the consolidated statement of income. Cash Flow Hedges of Interest Rate Risk United’s objectives in using interest rate derivatives are to add stability to net interest revenue and to manage its exposure to interest rate movements. To accomplish this objective, United primarily uses interest rate swaps as part of its interest rate risk management strategy. At December 31, 2016 and 2015, United did not have any active cash flow hedges but had dedesignated swaps previously designated as cash flow hedges. Changes in balance sheet composition and interest rate risk position made the hedges no longer necessary as protection against rising interest rates. The loss remaining in other comprehensive income on de-designated swaps is being amortized into earnings over the original term of the swaps as the forecasted transactions that the swaps were originally designated to hedge are still expected to occur. United expects that $891,000 will be reclassified as an increase to deposit interest expense over the next twelve months related to these cash flow hedges. The table below presents the effect of cash flow hedges on the consolidated statement of income (in thousands) Amount of Gain (Loss) Recognized Gain (Loss) Reclassified from Accumulated Other Gain (Loss) Recognized in Income on Derivative 2016 2015 2014 Location 2016 2015 2014 Location 2016 2015 2014 Interest revenue $ (7 ) $ - $ (79 ) Interest expense (1,884 ) (1,936 ) (1,931 ) Interest rate swaps $ - $ (471 ) $ (8,437 ) $ (1,891 ) $ (1,936 ) $ (2,010 ) Interest expense $ - $ (7 ) $ (107 ) Fair Value Hedges of Interest Rate Risk United is exposed to changes in the fair value of certain of its fixed rate obligations due to changes in interest rates. United uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in interest rates. Interest rate swaps designated as fair value hedges of brokered deposits involve the receipt of fixed-rate amounts from a counterparty in exchange for United making variable rate payments over the life of the agreements without the exchange of the underlying notional amount. Interest rate swaps designated as fair value hedges of fixed rate investments involve the receipt of variable-rate payments from a counterparty in exchange for United making fixed rate payments over the life of the instrument without the exchange of the underlying notional amount. At December 31, 2016, United had one interest rate swap with an aggregate notional amount of $12.8 million that was designated as a fair value hedge of interest rate risk and was pay-variable / receive-fixed, hedging the changes in the fair value of fixed rate brokered time deposits resulting from changes in interest rates. Also at December 31, 2016, United had one interest rate swap with a notional of $30 million that was designated as a pay-fixed / receive variable fair value hedge of changes in the fair value of a fixed rate corporate bond. At December 31, 2015, United had 13 interest rate swaps with an aggregate notional amount of $156 million that were designated as fair value hedges of interest rate risk and were pay-variable / receive-fixed swaps hedging the changes in the fair value of fixed rate brokered time deposits resulting from changes in interest rates. Also at December 31, 2015, United had one interest rate swap with a notional of $30 million that was designated as a pay-fixed / receive variable fair value hedge of changes in the fair value of a fixed rate corporate bond. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. United includes the gain or loss on the hedged items in the same income statement line item as the offsetting loss or gain on the related derivatives. During the year ended December 31, 2016, 2015, and 2014, United recognized a net gain of $2.29 million, a net gain of $210,000 and a net loss of $1.28 million, respectively, related to ineffectiveness in the fair value hedging relationships. United also recognized a net reduction of interest expense of $1.61 million, $4.46 million and $4.61 million for the years ended December 31, 2016, 2015 and 2014, respectively, related to fair value hedges of brokered time deposits, which includes net settlements on the derivatives. United recognized a reduction of interest revenue on securities of $606,000, $498,000 and $955,000 during 2016, 2015, and 2014, respectively, related to fair value hedges of corporate bonds. The table below presents the effect of derivatives in fair value hedging relationships on the consolidated statement of income (in thousands) Location of Gain (Loss) Recognized Amount of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in in Income Income on Derivative Income on Hedged Item on Derivative 2016 2015 2014 2016 2015 2014 Fair value hedges of brokered CD’s Interest expense $ 1,972 $ 1,814 $ 13,400 $ 458 $ (1,507 ) $ (14,357 ) Fair value hedges of corporate bonds Interest revenue 234 31 (2,487 ) (376 ) (128 ) 2,163 $ 2,206 $ 1,845 $ 10,913 $ 82 $ (1,635 ) $ (12,194 ) In certain cases, the estate of deceased brokered certificate of deposit holders may put the certificate of deposit back to the issuing bank at par upon the death of the holder. When these death puts occur, a gain or loss is recognized for the difference between the carrying value and the par amount of the deposits put back. The change in the fair value of brokered time deposits that are being hedged in fair value hedging relationships reported in the table above include gains and losses from death puts and such gains and losses are included in the amount of reported ineffectiveness gains or losses. Derivatives Not Designated as Hedging Instruments under ASC 815 The table below presents the gains and losses recognized in income on derivatives not designated as hedging instruments under ASC 815 for the periods indicated (in thousands) Income Statement Year Ended December 31, Location 2016 2015 2014 Customer derivatives and dealer offsets Other fee revenue $ 3,744 $ 1,713 $ 729 Bifurcated embedded derivatives and dealer offsets Other fee revenue 297 43 82 Mortgage banking derivatives Mortgage loan revenue 3,002 - - Risk participations Other fee revenue 360 - - Total gains and losses $ 7,403 $ 1,756 $ 811 Credit-risk-related Contingent Features United manages its credit exposure on derivatives transactions by entering into a bilateral credit support agreement with each counterparty. The credit support agreements require collateralization of exposures beyond specified minimum threshold amounts. The details of these agreements, including the minimum thresholds, vary by counterparty. As of December 31, 2016, collateral totaling $18.5 million was pledged toward derivatives in a liability position. United’s agreements with each of its derivative counterparties contain a provision where if either party defaults on any of its indebtedness, then it could also be declared in default on its derivative obligations. The agreements with derivatives counterparties also include provisions that if not met, could result in United being declared in default. United has agreements with certain of its derivative counterparties that contain a provision where if United fails to maintain its status as a well-capitalized institution or is subject to a prompt corrective action directive, the counterparty could terminate the derivative positions and United would be required to settle its obligations under the agreements.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Regulatory Matters	(20) Regulatory Matters Capital Requirements United and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary action by regulators that, if undertaken, could have a direct material effect on United. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, as revised by the Basel III Capital Rules effective as of January 1, 2015, United and the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures (as defined) established by regulation to ensure capital adequacy require United and the Bank to maintain minimum amounts and ratios of total capital, Tier 1 capital, and common equity Tier 1 capital (“CET1”) to risk-weighted assets, and of Tier 1 capital to average assets. Effective January 1, 2015, the Basel III Capital Rules revised the framework for prompt corrective action by (i) introducing a CET1 ratio requirement at each level (other than critically undercapitalized), with the required CET1 ratio being 6.5% for well-capitalized status; (ii) increasing the minimum Tier 1 capital ratio requirement for each category (other than critically undercapitalized), with the minimum Tier 1 capital ratio for well-capitalized status being 8% (as compared to the prior 6%); and (iii) eliminating the current provision that provides that a bank with a composite supervisory rating of 1 may have a 3% leverage ratio and still be adequately capitalized. As of December 31, 2016, United and the Bank were categorized as well-capitalized under the regulatory framework for prompt corrective action in effect at such time. To be categorized as well-capitalized at December 31, 2016, United and the Bank must have exceeded the well-capitalized guideline ratios in effect at such time, as set forth in the table below and have met certain other requirements. Management believes that United and the Bank exceeded all well-capitalized requirements at December 31, 2016, and there have been no conditions or events since year-end that would change the status of well-capitalized. Regulatory capital ratios at December 31, 2016 and 2015, along with the minimum amounts required for capital adequacy purposes and to be well-capitalized under prompt corrective action provisions in effect at such times are presented below for United and the Bank (dollars in thousands) United Community Banks, Inc. Basel III Guidelines (consolidated) United Community Bank Well Minimum Capitalized 2016 2015 2016 2015 Risk-based ratios: Common equity tier 1 capital 4.5 % 6.5 % 11.23 % 11.45 % 12.66 % 13.01 % Tier 1 capital 6.0 8.0 11.23 11.45 12.66 13.01 Total capital 8.0 10.0 12.04 12.50 13.48 14.06 Tier 1 leverage ratio 4.0 5.0 8.54 8.34 9.63 9.47 Common equity tier 1 capital $ 874,452 $ 773,677 $ 984,529 $ 877,169 Tier 1 capital 874,452 773,677 984,529 877,169 Total capital 937,876 844,667 1,047,953 948,159 Risk-weighted assets 7,789,089 6,755,011 7,775,352 6,743,560 Average total assets 10,236,868 9,282,243 10,221,318 9,264,133 Cash, Dividend, Loan and Other Restrictions At December 31, 2016 and 2015, the Bank did not have a required reserve balance at the Federal Reserve Bank of Atlanta. Federal and state banking regulations place certain restrictions on dividends paid by the Bank to United. In addition, dividends paid to United require pre-approval of the Georgia Department of Banking and Finance and the FDIC while the Bank has an accumulated deficit (negative retained earnings). During 2016 and 2015, the Bank received regulatory approval to pay cash dividends to United of $41.5 million and $77.5 million, respectively. The Federal Reserve Act requires that extensions of credit by the Bank to certain affiliates, including United, be secured by specific collateral, that the extension of credit to any one affiliate be limited to 10% of capital and surplus (as defined), and that extensions of credit to all such affiliates be limited to 20% of capital and surplus. United and the Bank are parties to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of their customers. These financial instruments include commitments to extend credit and letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheet. The contract amounts of these instruments reflect the extent of involvement the Bank has in particular classes of financial instruments. The exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and letters of credit written is represented by the contractual amount of these instruments. United uses the same credit policies in making commitments and conditional obligations as it uses for underwriting on-balance sheet instruments. In most cases, collateral or other security is required to support financial instruments with credit risk.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies [Abstract]
Commitments and Contingencies	(21) Commitments and Contingencies The following table summarizes, as of December 31, 2016 and 2015, the contract amount of off-balance sheet instruments (in thousands) 2016 2015 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 1,542,186 $ 1,351,446 Letters of credit 26,862 23,373 Minimum Lease Payments 29,090 23,507 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn on, the total commitment amounts do not necessarily represent future cash requirements. United evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary, upon extension of credit is based on management’s credit evaluation. Collateral held varies, but may include unimproved and improved real estate, certificates of deposit, personal property or other acceptable collateral. Letters of credit are conditional commitments issued by United and could result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party or upon the non-performance of the customer. Those guarantees are primarily issued to local businesses and government agencies. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. In most cases, the Bank holds real estate, certificates of deposit, and other acceptable collateral as security supporting those commitments for which collateral is deemed necessary. The extent of collateral held for those commitments varies. United maintains an allowance for unfunded loan commitments which is included in the balance of other liabilities in the consolidated balance sheet. The allowance for unfunded loan commitments is determined as part of the quarterly analysis of the allowance for credit losses and is based on probable incurred losses in United’s unfunded loan commitments that are expected to result in funded loans. United’s wholly-owned bank subsidiary, United Community Bank (the “Bank”) holds minor investments in certain limited partnerships for Community Reinvestment Act purposes. As of December 31, 2016, the Bank had invested $2.91 million in these limited partnerships and had committed to fund an additional $1.59 million related to future capital calls. United, in the normal course of business, is subject to various pending and threatened lawsuits in which claims for monetary damages are asserted. Although it is not possible to predict the outcome of these lawsuits, or the range of any possible loss, management, after consultation with legal counsel, does not anticipate that the ultimate aggregate liability, if any, arising from these lawsuits will have a material adverse effect on financial position or results of operations.

Common and Preferred Stock

Common and Preferred Stock	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Common and Preferred Stock	(22) Common and Preferred Stock In the second quarter of 2016, United amended its articles of incorporation to increase the number of authorized shares of common stock from 100 million to 150 million shares. On March 22, 2016, United announced that its Board of Directors had authorized a new program to repurchase up to $50 million of United’s outstanding common stock through December 31, 2017. Under the program, the shares may be repurchased periodically in open market transactions at prevailing market prices, in privately negotiated transactions, or by other means in accordance with federal securities laws. The actual timing, number and value of shares repurchased under the program depends on a number of factors, including the market price of United’s common stock, general market and economic conditions, and applicable legal requirements. During 2016, United repurchased 764,000 shares under the program. As of December 31, 2016, $36.3 million of outstanding common stock may be repurchased under the program. United may issue preferred stock in one or more series, up to a maximum of 10,000,000 shares. Each series shall include the number of shares issued, preferences, special rights and limitations as determined by the Board of Directors. As discussed in Note 3, on May 1, 2015, United completed its acquisition of Moneytree. Upon completion of the acquisition, each share of preferred stock issued by MoneyTree as part of the SBLF program of the Treasury (9,992 shares in the aggregate with a liquidation preference amount of $1,000 per share) was converted automatically into one substantially identical share of preferred stock of United with a liquidation preference amount of $1,000 per share, designated as United’s Non-Cumulative Perpetual Preferred Stock, Series H. The SBLF Preferred Shares had terms and conditions identical to those shares of preferred stock issued by MoneyTree to the Treasury. The Series H preferred stock paid noncumulative dividends quarterly at a dividend rate of 1.00% per annum through March 15, 2016 and 9% per annum thereafter. In the first quarter of 2016, United redeemed all of its outstanding Series H preferred stock. The preferred stock was redeemed at par and did not result in any gain or loss. On January 10, 2014, United redeemed 105,000 shares of the Fixed Rate Cumulative Perpetual Preferred Stock, Series B. On March 3, 2014, United redeemed 16,613 shares of the Cumulative Perpetual Preferred Stock, Series D. United had no preferred stock outstanding as of December 31, 2016.

Equity Compensation and Related

Equity Compensation and Related Plans	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Equity Compensation and Related Plans	(23) Equity Compensation and Related Plans United has an equity compensation plan that allows for grants of incentive stock options, nonqualified stock options, restricted stock and restricted stock unit awards (also referred to as “nonvested stock” awards), stock awards, performance share awards or stock appreciation rights. Options granted under the plan can have an exercise price no less than the fair market value of the underlying stock at the date of grant. The general terms of the plan include a vesting period (usually four years) with an exercisable period not to exceed ten years. Certain options, restricted stock and restricted stock unit awards provide for accelerated vesting if there is a change in control of United or certain other conditions are met (as defined in the plan document). As of December 31, 2016, 2.18 million additional awards could be granted under the plan. Through December 31, 2016, incentive stock options, nonqualified stock options, restricted stock and restricted stock unit awards, base salary stock grants and performance share awards had been granted under the plan. Restricted stock and options outstanding and activity for the years ended December 31 consisted of the following: Restricted Stock Options Weighted Weighted Weighted Average Average Average Aggregate Grant Date Exercise Remaining Intrinsic Shares Fair Value Shares Price Term (Yrs.) Value (000’s) December 31, 2013 1,073,676 13.73 350,772 97.87 Granted 97,016 17.33 10,000 16.71 Vested (336,691 ) 12.23 - - Expired - - (32,810 ) 115.83 Cancelled (4,800 ) 13.78 (14,407 ) 97.80 December 31, 2014 829,201 14.76 313,555 93.40 Granted 265,306 18.66 - - Vested (305,902 ) 14.00 - - Expired - - (45,866 ) 108.93 Cancelled (75,938 ) 15.63 (26,196 ) 98.36 December 31, 2015 712,667 16.44 241,493 89.92 Granted 302,012 21.42 - - Vested (261,729 ) 16.14 - - Expired - - (52,853 ) 135.32 Cancelled (61,980 ) 17.99 (115,975 ) 104.05 December 31, 2016 690,970 18.60 72,665 34.34 3.59 $ 393 Vested / Exercisable at December 31, 2016 - - 66,415 36.03 3.22 311 The following is a summary of stock options outstanding at December 31, 2016: Options Outstanding Options Exercisable Weighted Average Weighted Shares Range Average Price Remaining Life Shares Average Price 26,823 $ 10.00 - 30.00 $ 14.96 6.01 20,573 $ 14.53 37,052 30.01 - 50.00 31.47 2.49 37,052 31.47 4,551 50.01 - 70.00 66.40 1.34 4,551 66.40 4,239 130.01 - 147.60 147.60 0.31 4,239 147.60 72,665 10.00 - 147.60 34.34 3.59 66,415 36.03 The weighted average fair value of options granted in 2014 was $9.49. No options were granted in 2016 or 2015. The fair value of each option granted was estimated on the date of grant using the Black-Scholes model. The decrease in United’s stock price through 2010 has rendered most of its outstanding options severely out of the money and potentially worthless to the grantee. Therefore historical exercise patterns do not provide a reasonable basis for determining the expected life of new option grants. United therefore uses the formula provided by the SEC in ASC Topic 718-10-S99 to determine the expected life of the options. The weighted average assumptions used to determine the fair value of options are presented in the table below: 2014 Expected volatility 66 % Expected dividend yield 1.0 % Expected life (in years) 6.25 Risk free rate 2.1 % No stock options were granted in 2016 or 2015. Compensation expense relating to options of $30,000, $35,000 and $15,000, respectively, was included in earnings for 2016, 2015 and 2014. A deferred income tax benefit related to stock option expense of $12,000, $14,000 and $6,000 was included in the determination of income tax expense in 2016, 2015 and 2014, respectively. The amount of compensation expense for all periods was determined based on the fair value of options at the time of grant, multiplied by the number of options granted that were expected to vest, which was then amortized over the vesting period. There were no options exercised during 2016, 2015 and 2014. Compensation expense for restricted stock is based on the fair value of restricted stock awards at the time of grant, which is equal to the value of United’s common stock on the date of grant. The value of restricted stock grants that are expected to vest is amortized into expense over the vesting period. Compensation expense recognized in the consolidated statement of income for restricted stock in 2016, 2015 and 2014 was $4.47 million, $4.37 million and $4.29 million, respectively. The total intrinsic value of restricted stock at December 31, 2016 was approximately $20.5 million. As of December 31, 2016, there was $9.80 million of unrecognized compensation cost related to nonvested stock options and restricted stock granted under the plan. The cost is expected to be recognized over a weighted-average period of 2.74 years. The aggregate grant date fair value of options and restricted stock that vested during 2016 was $4.22 million. United sponsors a Dividend Reinvestment and Stock Purchase Plan (“DRIP”) that allows participants who already own United’s common stock to purchase additional shares directly from the Company. The DRIP also allows participants to automatically reinvest their quarterly dividends in additional shares of common stock without a commission. The DRIP had previously been suspended but was re-activated in 2014 when United restored its quarterly dividend. In 2016, 2015 and 2014, 4,044, 2,916 and 191 shares, respectively, were issued under the DRIP. Effective January 1, 2015, United’s 401(k) Plan discontinued offering shares of United’s common stock as an investment option. During 2014, United’s 401(k) Plan purchased 17,373 shares directly from United at the average of the high and low stock prices on the transaction dates. In addition, United has an Employee Stock Purchase Program (“ESPP”) that allows eligible employees to purchase shares of common stock at a discount (10% in 2016 and 2015 and 5% in 2014), with no commission charges. During 2016, 2015 and 2014 United issued 16,456 shares, 14,213 shares, and 10,506 shares, respectively, through the ESPP. United offers its common stock as an investment option in its deferred compensation plan. The common stock component is accounted for as an equity instrument and is reflected in the consolidated balance sheet as common stock issuable. The deferred compensation plan does not allow for diversification once an election is made to invest in United stock and settlement must be accomplished in shares at the time the deferral period is completed. United also allows restricted stock grantees to defer all or a portion of their restricted stock in the deferred compensation plan upon vesting. At December 31, 2016 and 2015, United had 519,874 shares and 458,953 shares, respectively, of its common stock that was issuable under the deferred compensation plan.

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value	12 Months Ended
	Dec. 31, 2016
Fair Value [Abstract]
Assets and Liabilities Measured at Fair Value	(24) Assets and Liabilities Measured at Fair Value Fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, the Financial Accounting Standards Board’s Accounting Standards Codification Topic 820 (“ASC 820”) Fair Value Measurements and Disclosures Fair Value Hierarchy Level 1 Level 2 Level 3 In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. United’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. The following is a description of the valuation methodologies used for assets and liabilities recorded at fair value. Securities Available-for-Sale Investment securities available-for-sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, 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 issued by government sponsored entities, municipal bonds, corporate debt securities and asset-backed securities and are valued based on observable inputs that include: quoted market prices for similar assets, quoted market prices that are not in an active market, or other inputs that are observable in the market and can be corroborated by observable market data for substantially the full term of the securities. Securities classified as Level 3 include asset-backed securities in less liquid markets. Securities classified as Level 3 are valued based on estimates obtained from broker-dealers and are not directly observable. Deferred Compensation Plan Assets and Liabilities Included in other assets in the consolidated balance sheet are assets related to employee deferred compensation plans. The assets associated with these plans are invested in mutual funds and classified as Level 1. Deferred compensation liabilities, also classified as Level 1, are carried at the fair value of the obligation to the employee, which mirrors the fair value of the invested assets and is included in other liabilities in the consolidated balance sheet. Mortgage Loans Held for Sale Beginning in the third quarter of 2016, United elected the fair value option for newly originated mortgage loans held for sale. United elected the fair value option for its portfolio of mortgage loans held for sale in order to reduce certain timing differences and better match changes in fair values of the loans with changes in the value of derivative instruments used to economically hedge them. The fair value of mortgage loans held for sale is determined using quoted prices for a similar asset, adjusted for specific attributes of that loan (Level 2). Loans United does not record loans at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is 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 based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except that as a practical expedient, a creditor may measure impairment based on a loan’s observable market price, or the fair value of the collateral if repayment of the loan is dependent upon the sale of the underlying collateral. 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. In accordance with ASC 820, 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, United records 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, United records the impaired loan as nonrecurring Level 3. Derivative Financial Instruments United uses interest rate swaps and interest rate floors to manage its interest rate risk. The valuation of these instruments is typically determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. United also uses best effort and mandatory delivery forward loan sale commitments to hedge risk in its mortgage lending business. To comply with the provisions of ASC 820, management incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, management has considered the effect of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Although management has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of December 31, 2015, management had assessed the significance of the effect of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. Derivatives classified as Level 3 included structured derivatives for which broker quotes, used as a key valuation input, were not observable consistent with a Level 2 disclosure. This resulted in the Bank transferring them to a Level 3 disclosure in 2014. The fair value of risk participations incorporates Level 3 inputs to evaluate the likelihood of customer default. The fair value of interest rate lock commitments, which is related to mortgage loan commitments, is categorized as Level 3 based on unobservable inputs for commitments that United does not expect to fund. Servicing Rights for Government Guaranteed Loans United recognizes servicing rights upon the sale of government guaranteed loans sold with servicing retained. This asset is recorded at fair value on recognition, and management has elected to carry this asset at fair value for subsequent reporting. Given the nature of the asset, the key valuation inputs are unobservable and management considers this asset as Level 3. Pension Plan Assets For disclosure regarding the fair value of pension plan assets, see Note 18. Assets and Liabilities Measured at Fair Value on a Recurring Basis The table below presents United’s assets and liabilities measured at fair value on a recurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands) December 31, 2016 Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasuries $ 169,616 $ - $ - $ 169,616 U.S. Agencies - 20,820 - 20,820 State and political subdivisions - 74,177 - 74,177 Mortgage-backed securities - 1,391,682 - 1,391,682 Corporate bonds - 304,717 675 305,392 Asset-backed securities - 469,569 - 469,569 Other - 1,182 - 1,182 Mortgage loans held for sale - 27,891 - 27,891 Deferred compensation plan assets 4,161 - - 4,161 Servicing rights for government guaranteed loans - - 5,752 5,752 Derivative financial instruments - 11,911 11,777 23,688 Total assets $ 173,777 $ 2,301,949 $ 18,204 $ 2,493,930 Liabilities: Deferred compensation plan liability $ 4,161 $ - $ - $ 4,161 Derivative financial instruments - 11,301 16,347 27,648 Total liabilities $ 4,161 $ 11,301 $ 16,347 $ 31,809 December 31, 2015 Level 1 Level 2 Level 3 Total Assets: Securities available for sale U.S. Treasuries $ 168,706 $ - $ - $ 168,706 U.S. Agencies - 112,340 - 112,340 State and political subdivisions - 56,268 - 56,268 Mortgage-backed securities - 1,113,118 - 1,113,118 Corporate bonds - 305,276 750 306,026 Asset-backed securities - 533,242 - 533,242 Other - 1,811 - 1,811 Deferred compensation plan assets 3,450 - - 3,450 Servicing rights for government guaranteed loans - - 3,712 3,712 Derivative financial instruments - 10,664 9,418 20,082 Total assets $ 172,156 $ 2,132,719 $ 13,880 $ 2,318,755 Liabilities: Deferred compensation plan liability $ 3,450 $ - $ - $ 3,450 Derivative financial instruments - 13,031 15,794 28,825 Total liabilities $ 3,450 $ 13,031 $ 15,794 $ 32,275 The following table shows a reconciliation of the beginning and ending balances for assets measured at fair value on a recurring basis using significant unobservable inputs that are classified as Level 3 values (in thousands) Derivative Derivative Servicing Securities December 31, 2013 $ - $ - $ - $ 350 Business combinations - - 2,133 - Additions - - 832 - Sales and settlements - - (152 ) - Other comprehensive income - - - 400 Amounts included in earnings - fair value adjustments - - (262 ) - Transfers between valuation levels, net 12,262 18,979 - - December 31, 2014 12,262 18,979 2,551 750 Business combinations 286 - 137 - Additions 311 - 1,699 - Sales and settlements (409 ) - (353 ) - Amounts included in earnings - fair value adjustments (3,032 ) (3,185 ) (322 ) - December 31, 2015 9,418 15,794 3,712 750 Additions - 17 2,723 - Sales and settlements (509 ) (1,001 ) (393 ) - Other comprehensive income - - - (75 ) Amounts included in earnings - fair value adjustments 2,868 1,537 (290 ) - December 31, 2016 $ 11,777 $ 16,347 $ 5,752 $ 675 The following table presents quantitative information about Level 3 fair value measurements for fair value on a recurring basis at (in thousands) Fair Value Weighted Average December 31, Valuation December 31, Level 3 Assets 2016 2015 Technique Unobservable Inputs 2016 2015 Servicing rights $ 5,752 $ 3,712 Discounted Discount rate 11.0 % 11.8 % for government guaranteed loans cash flow Prepayment rate 7.12 % 6.95 % Corporate bonds 675 750 Indicative bid provided by a broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company N/A N/A Derivative assets - mortgage 1,552 188 Internal model Pull through rate 80 % 85 % Derivative assets - other 10,225 9,230 Dealer priced Dealer priced N/A N/A Derivative liabilities - risk 26 - Internal model Probable exposure rate 0.35 % N/A participations Probability of default rate 1.80 % N/A Derivative liabilities - other 16,321 15,794 Dealer priced Dealer priced N/A N/A Fair Value Option At December 31, 2016, mortgage loans held for sale for which the fair value option was elected had an aggregate fair value and outstanding principal balance of $27.9 million and $27.6 million, respectively. Interest income on these loans is calculated based on the note rate of the loan and is recorded in interest revenue. During 2016, net gains resulting from changes in fair value of these loans of $322,000 were recorded in mortgage loan and other related fees. These changes in fair value were mostly offset by hedging activities. An immaterial portion of these amounts was attributable to changes in instrument-specific credit risk. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis United may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis. These assets are not measured at fair value on a recurring basis, but are subject to fair value adjustments in certain circumstances. These adjustments to fair value usually result from the application of lower of amortized cost or fair value accounting or write-downs of individual assets due to impairment. The following table presents the fair value hierarchy and carrying value of all assets that were still held as of December 31, 2016 and 2015, for which a nonrecurring fair value adjustment was recorded during the periods presented (in thousands) December 31, 2016 Level 1 Level 2 Level 3 Total Loans $ - $ - $ 7,179 $ 7,179 December 31, 2015 Loans $ - $ - $ 7,589 $ 7,589 Loans that are reported above as being measured at fair value on a nonrecurring basis are generally impaired loans that have either been partially charged off or have specific reserves assigned to them. Nonaccrual impaired loans that are collateral dependent are generally written down to 80% of appraised value which considers the estimated costs to sell. Specific reserves are established for impaired loans based on appraised value of collateral or discounted cash flows, although only those specific reserves based on the fair value of collateral are considered nonrecurring fair value adjustments. Assets and Liabilities Not Measured at Fair Value For financial instruments that have quoted market prices, those quotes are used to determine fair value. Financial instruments that have no defined maturity, have a remaining maturity of 180 days or less, or reprice frequently to a market rate, are assumed to have a fair value that approximates reported book value, after taking into consideration any applicable credit risk. If no market quotes are available, financial instruments are valued by discounting the expected cash flows using an estimated current market interest rate for the financial instrument. For off-balance sheet derivative instruments, fair value is estimated as the amount that United would receive or pay to terminate the contracts at the reporting date, taking into account the current unrealized gains or losses on open contracts. United’s cash and cash equivalents and repurchase agreements have short maturities and therefore the carrying value approximates fair value. The fair value of securities available-for-sale equals the balance sheet value. Due to the short-term settlement of accrued interest receivable and payable, the carrying amount closely approximates fair value. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect the premium or discount on any particular financial instrument that could result from the sale of United’s entire holdings. Because no ready market exists for a significant portion of United’s financial instruments, fair value estimates are based on many judgments. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Significant assets and liabilities that are not considered financial instruments include the mortgage banking operation, brokerage network, deferred income taxes, premises and equipment and goodwill. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates. Off-balance sheet instruments (commitments to extend credit and standby letters of credit) for which draws can be reasonably predicted are generally short-term and at variable rates. Therefore, both the carrying amount and the estimated fair value associated with these instruments are immaterial. The carrying amount and fair values for other financial instruments that are not measured at fair value on a recurring basis in United’s balance sheet are as follows (in thousands) Carrying Fair Value Level December 31, 2016 Amount Level 1 Level 2 Level 3 Total Assets: Securities held to maturity $ 329,843 $ - $ 333,170 $ - $ 333,170 Loans, net 6,859,214 - - 6,824,229 6,824,229 Mortgage loans held for sale 1,987 - 2,018 - 2,018 Residential mortgage servicing rights 4,372 - - 5,175 5,175 Liabilities: Deposits 8,637,558 - 8,635,811 - 8,635,811 Federal Home Loan Bank advances 709,209 - 709,174 - 709,174 Long-term debt 175,078 - - 175,750 175,750 December 31, 2015 Assets: Securities held to maturity 364,696 - 371,658 - 371,658 Loans, net 5,926,993 - - 5,840,554 5,840,554 Mortgage loans held for sale 24,231 - 24,660 - 24,660 Residential mortgage servicing rights 3,370 - - 3,521 3,521 Liabilities: Deposits 7,873,193 - 7,881,109 - 7,881,109 Federal Home Loan Bank advances 430,125 - 430,119 - 430,119 Long-term debt 163,836 - - 166,668 166,668

Condensed Financial Statements

Condensed Financial Statements of United Community Banks, Inc. (Parent Only)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Statements of United Community Banks, Inc. (Parent Only) [Abstract]
Condensed Financial Statements of United Community Banks, Inc. (Parent Only)	(25) Condensed Financial Statements of United Community Banks, Inc. (Parent Only) Statement of Income For the Years Ended December 31, 2016, 2015 and 2014 (in thousands) 2016 2015 2014 Dividends from bank $ 41,500 $ 77,500 $ 129,000 Dividends from other subsidiaries - 3,500 3,000 Shared service fees from subsidiaries 8,476 7,628 8,057 Other 685 123 424 Total income 50,661 88,751 140,481 Interest expense 11,209 10,385 11,550 Other expense 11,380 11,185 9,868 Total expenses 22,589 21,570 21,418 Income tax benefit 6,717 1,709 2,357 Income before equity in undistributed earnings of subsidiaries 34,789 68,890 121,420 Equity in undistributed earnings of subsidiaries 65,867 2,688 (53,800 ) Net income $ 100,656 $ 71,578 $ 67,620 Balance Sheet As of December 31, 2016 and 2015 (in thousands) Assets 2016 2015 Cash $ 42,980 $ 50,338 Investment in bank 1,201,868 1,112,496 Investment in other subsidiaries 3,731 2,360 Other assets 17,800 32,730 Total assets $ 1,266,379 $ 1,197,924 Liabilities and Shareholders’ Equity Long-term debt $ 175,078 $ 165,620 Other liabilities 15,566 14,019 Total liabilities 190,644 179,639 Shareholders’ equity 1,075,735 1,018,285 Total liabilities and shareholders’ equity $ 1,266,379 $ 1,197,924 Statement of Cash Flows For the Years Ended December 31, 2016, 2015 and 2014 (in thousands) 2016 2015 2014 Operating activities: Net income $ 100,656 $ 71,578 $ 67,620 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed earnings of the subsidiaries (65,867 ) (2,688 ) 53,800 Depreciation, amortization and accretion 23 26 22 Loss on prepayment of debt - 754 - Stock-based compensation 4,496 4,403 4,304 Change in assets and liabilities: Other assets 14,305 515 2,529 Other liabilities (9,457 ) (396 ) (9,177 ) Net cash provided by operating activities 44,156 74,192 119,098 Investing activities: Payment for acquisition (11,209 ) (76,893 ) - Purchases of premises and equipment - (12 ) (44 ) Purchase of available for sale securities (1,125 ) - - Sales and paydowns of securities available for sale - 250 537 Net cash (used in) provided by investing activities (12,334 ) (76,655 ) 493 Financing activities: Repayment of long-term debt - (48,521 ) - Proceeds from issuance of long-term debt - 83,924 - Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans 366 303 469 Proceeds from issuance of common stock, net of offering costs - - 12,206 Repurchase of outstanding warrant - - (12,000 ) Retirement of preferred stock (9,992 ) - (121,613 ) Repurchase of common stock (13,659 ) - - Cash dividends on common stock (15,849 ) (14,822 ) (1,810 ) Cash dividends on Series B preferred stock - - (802 ) Cash dividends on Series D preferred stock - - (412 ) Cash dividends on Series H preferred stock (46 ) (50 ) - Net cash (used in) provided by financing activities (39,180 ) 20,834 (123,962 ) Net change in cash (7,358 ) 18,371 (4,371 ) Cash at beginning of year 50,338 31,967 36,338 Cash at end of year $ 42,980 $ 50,338 $ 31,967

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation At December 31, 2016, United was a bank holding company subject to the regulation of the Board of Governors of the Federal Reserve System (the “Federal Reserve”) whose principal business was conducted by its wholly-owned commercial bank subsidiary, United Community Bank (the “Bank”). United is subject to regulation under the Bank Holding Company Act of 1956. The consolidated financial statements include the accounts of United, the Bank and other wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The Bank is a Georgia state chartered commercial bank that serves markets throughout north Georgia, coastal Georgia, the Atlanta-Sandy Springs-Roswell, Georgia and Gainesville, Georgia metropolitan statistical areas, western North Carolina, upstate and coastal South Carolina and east Tennessee and provides a full range of banking services. The Bank is insured and subject to the regulation of the Federal Deposit Insurance Corporation (“FDIC”) and is also subject to the regulation of the Georgia Department of Banking and Finance.
Use of Estimates	Use of Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the balance sheet and revenue and expenses for the years then ended. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change are the determination of the allowance for loan losses, the valuation of acquired loans, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of goodwill and separately identifiable intangible assets associated with mergers and acquisitions, and the valuation of deferred tax assets.
Operating Segments	Operating Segments Operating segments are components of a business about which separate financial information is available and evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assessing performance. Public companies are required to report certain financial information about operating segments in interim and annual financial statements. United’s community banking operations are divided among geographic regions and local community banks within those regions, those regions and banks have similar economic characteristics and are therefore aggregated into one operating segment for purposes of segment reporting. Additionally United assessed other operating units to determine if they should be classified and reported as segments. They include Mortgage, Advisory Services and Specialized Lending. Each was assessed for separate reporting on both a qualitative and a quantitative basis in accordance with Financial Accounting Standards Boards (“FASB”) Accounting Standards Codification Topic 280 Segment Reporting (“ASC 280”). Qualitatively, these business units are currently operating in the same geographic footprint as the community banks and face many of the same customers as the community banks. While the chief operating decision maker does have some separate financial information for these entities, they are currently viewed more as a product line extension of the community banks. However, management will continue to evaluate these business units for separate reporting as facts and circumstances change. On a quantitative basis, ASC 280 provides a threshold of 10% of Revenue, Net Income or Assets where a breach of any of these thresholds would trigger segment reporting. Under this requirement none of the entities reached the threshold. Based on this analysis, United concluded that it has one operating and reportable segment.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents include amounts due from banks, interest-bearing deposits in banks, federal funds sold, commercial paper, reverse repurchase agreements and short-term investments and are carried at cost. Federal funds are generally sold for one-day periods, interest-bearing deposits in banks are available on demand and commercial paper investments and reverse repurchase agreements mature within a period of less than 90 days. A portion of the cash on hand and on deposit with the Federal Reserve Bank of Atlanta was required to meet regulatory reserve requirements.
Investment Securities	Investment Securities United classifies its securities in one of three categories: trading, held-to-maturity or available-for-sale. United does not currently hold any trading securities that are bought and held principally for the purpose of selling them in the near term. Held-to-maturity securities are those securities for which United has the ability and intent to hold until maturity. All other securities are classified as available-for-sale. Held-to-maturity securities are recorded at cost, adjusted for the amortization or accretion of premiums or discounts. Available-for-sale securities are recorded at fair value. Unrealized holding gains and losses, net of the related tax effect, on available-for-sale securities are reported in other comprehensive income as a separate component of shareholders’ equity until realized. Transfers of securities between categories are recorded at fair value at the date of transfer. Unrealized holding gains or losses associated with transfers of securities from available-for-sale to held-to-maturity are included in the balance of accumulated other comprehensive income in the consolidated balance sheet. These unrealized holding gains or losses are amortized into income over the remaining life of the security as an adjustment to the yield in a manner consistent with the amortization or accretion of the original purchase premium or discount on the associated security. Management evaluates investment securities for other than temporary impairment on a quarterly basis. A decline in the fair value of available-for-sale and held-to-maturity securities below cost that is deemed other than temporary is charged to earnings for a decline in value deemed to be credit related. The decline in value attributed to non credit related factors is recognized in other comprehensive income and a new cost basis for the security is established. Premiums and discounts are amortized or accreted over the life of the related security as an adjustment to the yield. Realized gains and losses for securities classified as available-for-sale and held-to-maturity are included in net income and derived using the specific identification method for determining the cost of the securities sold. Federal Home Loan Bank (“FHLB”) stock is included in other assets at its original cost basis, as cost approximates fair value as there is no ready market for such investments.
Mortgage Loans Held for Sale	Mortgage Loans Held for Sale Beginning in the third quarter of 2016, United elected the fair value option for newly originated mortgage loans held for sale in order to reduce certain timing differences and better match changes in fair values of the loans with changes in the fair value of derivative instruments used to economically hedge them. Mortgage loans held for sale which were originated prior to third quarter 2016 are carried at the lower of aggregate cost or fair value. The amount by which cost exceeds fair value is accounted for as a valuation allowance. Changes in the valuation allowance are included in the determination of net income for the period in which the change occurs. No valuation allowances were required at December 31, 2016 or 2015 since those loans have fair values that exceeded the recorded cost basis.
Loans	Loans With the exception of purchased loans that are recorded at fair value on the date of acquisition, loans are stated at principal amount outstanding, net of any unearned revenue and net of any deferred loan fees and costs. Interest on loans is primarily calculated by using the simple interest method on daily balances of the principal amount outstanding. Purchased Loans With Evidence of Credit Deterioration: Loans and Debt Securities Acquired with Deteriorated Credit Quality PCI loans are aggregated into pools of loans based on common risk characteristics such as the type of loan, payment status, or collateral type. United estimates the amount and timing of expected cash flows for each purchased loan pool and the expected cash flows in excess of the amount paid are recorded as interest income over the remaining life of the pool (accretable yield). The excess of the pool’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest revenue. Nonaccrual Loans: he accrual of interest is discontinued when a loan becomes 90 days past due and is not well collateralized and in the process of collection, or when management believes, after considering economic and business conditions and collection efforts, that the principal or interest will not be collectible in the normal course of business. Past due status is based on contractual terms of the loan. When a loan is placed on nonaccrual status, previously accrued and uncollected interest is charged against interest revenue on loans. Interest payments are applied to reduce the principal balance on nonaccrual loans. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, there is a sustained period of repayment performance and future payments are reasonably assured. Nonaccrual loans include smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. Impaired Loans: PCI loans are considered to be impaired when it is probable that United will be unable to collect all the cash flows expected at acquisition, plus additional cash flows expected to be collected arising from changes in estimates after acquisition. Loans that are accounted for in pools are evaluated collectively for impairment on a pool by pool basis based on expected pool cash flows. Discounts continue to be accreted as long as there are expected future cash flows in excess of the current carrying amount of the specifically-reviewed loan or pool. Concentration of Credit Risk:
Allowance for Credit Losses	Allowance for Credit Losses The allowance for credit losses includes the allowance for loan losses and the allowance for unfunded commitments included in other liabilities. Increases to the allowance for loan losses and allowance for unfunded commitments are established through a provision for credit losses charged to income. Loans are charged against the allowance for loan losses when available information confirms that the collectability of the principal is unlikely. The allowance for loan losses represents an amount, which, in management’s judgment, is adequate to absorb probable losses on existing loans as of the date of the balance sheet. The allowance for unfunded commitments represents expected losses on unfunded commitments and is reported in the consolidated balance sheet in other liabilities. The allowance for loan losses is composed of general reserves, specific reserves, and PCI reserves. General reserves are determined by applying loss percentages to the individual loan categories that are based on actual historical loss experience. 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 considered in this evaluation. The need for specific reserves is evaluated on nonaccrual loan relationships greater than $500,000, accruing relationships rated substandard that are greater than $2 million and all troubled debt restructurings (“TDRs”). The specific reserves are determined on a loan-by-loan basis based on management’s evaluation of United’s exposure for each credit, given the current payment status of the loan and the value of any underlying collateral. Loans for which specific reserves are provided are excluded from the calculation of general reserves. For PCI loans, a valuation allowance is established when it is probable that the Company will be unable to collect all the cash flows expected at acquisition plus additional cash flows expected to be collected arising from changes in estimate after acquisition. The allocation of the allowance for loan losses is based on historical data, subjective judgment and estimates and, therefore, is not necessarily indicative of the specific amounts or loan categories in which charge-offs may ultimately occur. For purposes of determining general reserves, United segments the loan portfolio into broad categories with similar risk elements. Those categories and their specific risks are described below. Owner occupied commercial real estate – Income producing commercial real estate – Commercial & industrial Commercial construction Residential mortgage Home equity lines of credit – Residential construction Consumer installment Indirect auto - Management outsources a significant portion of its loan review to ensure objectivity in the loan review process and to challenge and corroborate the loan grading system. The loan review function provides additional analysis used in determining the adequacy of the allowance for loan losses. To supplement the outsourced loan review, management also has an internal loan review department that is independent of the lending function. Management believes the allowance for loan losses is appropriate at December 31, 2016. While management uses available information to recognize losses on loans, future additions to the allowance may be necessary based on changes in economic conditions. In addition, various regulatory agencies, as an integral part of their examination process, periodically review United’s allowance for loan losses.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed primarily using the straight-line method over the estimated useful lives of the related assets. Costs incurred for maintenance and repairs are expensed as incurred. The range of estimated useful lives for buildings and improvements is 10 to 40 years, for land improvements, 10 years, and for furniture and equipment, 3 to 10 years. United periodically reviews the carrying value of premises and equipment for impairment whenever events or circumstances indicate that the carrying amount of such assets may not be fully recoverable.
Foreclosed Properties	Foreclosed Properties (Other Real Estate Owned, or “OREO”) Foreclosed property is initially recorded at fair value, less cost to sell. If the fair value, less cost to sell at the time of foreclosure is less than the loan balance, the deficiency is recorded as a loan charge-off against the allowance for loan losses. If the fair value, less cost to sell, of the foreclosed property decreases during the holding period, a valuation allowance is established with a charge to operating expenses. When the foreclosed property is sold, a gain or loss is recognized on the sale for the difference between the sales proceeds and the carrying amount of the property. Financed sales of foreclosed property are accounted for in accordance with Accounting Standards Codification Topic 360, Subtopic 20, Real Estate Sales
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill is an asset representing the future economic benefits from other assets acquired that are not individually identified and separately recognized. Goodwill is measured as the excess of the consideration transferred, net of the fair value of identifiable assets acquired and liabilities assumed at the acquisition date. Goodwill is not amortized, but instead is tested for impairment annually or more frequently if events or circumstances exist that indicate a goodwill impairment test should be performed. Other intangible assets, which are initially recorded at fair value, consist of core deposit intangible assets resulting from United’s acquisitions. Core deposit intangible assets are amortized on a sum-of-the-years-digits basis over their estimated useful lives. United evaluates its other intangible assets for impairment whenever events or changes in circumstances indicate the carrying amount of the asset may not be recoverable
Transfers of Financial Assets	Transfers of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from United, the transferee obtains the right, free of conditions that constrain it from taking advantage of that right, to pledge or exchange the transferred assets and United does not maintain effective control over the transferred assets through an agreement to repurchase them before maturity.
Servicing Rights	Servicing Rights United records a separate servicing asset for Small Business Administration (“SBA”) loans, United States Department of Agriculture (“USDA”) loans, and residential mortgage loans when the loan is sold but servicing is retained. This asset represents the right to service the loans and receive a fee in compensation. Servicing assets are initially recorded at their fair value as a component of the sale proceeds. The fair value of the servicing assets is based on an analysis of discounted cash flows that incorporates estimates of (1) market servicing costs, (2) market-based prepayment rates, and (3) market profit margins. Servicing assets are included in other assets. United has elected to subsequently measure the servicing assets for government guaranteed loans at fair value. There is no aggregation of the loans into pools for the valuation of the servicing asset, but rather the servicing asset value is measured at a loan level. Residential mortgage servicing rights are subsequently measured using the amortization method which requires the servicing rights to be amortized to expense over the estimated life of the servicing right. These servicing rights are carried at the lower of amortized cost or estimated fair value. Impairment valuations are based on projections using a discounted cash flow method that includes assumptions regarding prepayments, interest rates, servicing costs and other factors. Impairment is measured on a disaggregated basis for each stratum of the servicing rights, which is segregated based on predominant risk characteristics including interest rate and loan type. Subsequent increases in value are recognized to the extent of previously recorded impairment for each stratum. The rate of prepayment of loans serviced is the most significant estimate involved in the measurement process. Estimates of prepayment rates are based on market expectations of future prepayment rates, industry trends, and other considerations. Actual prepayment rates will differ from those projected by management due to changes in a variety of economic factors, including prevailing interest rates and the availability of alternative financing sources to borrowers. If actual prepayments of the loans being serviced were to occur more quickly than projected, the carrying value of servicing assets might have to be written down through a charge to earnings in the current period. If actual prepayments of the loans being serviced were to occur more slowly than had been projected, the carrying value of servicing assets could increase, and servicing income would exceed previously projected amounts.
Bank Owned Life Insurance	Bank Owned Life Insurance United has purchased life insurance policies on certain key executives and members of management. United has also received life insurance policies on members of acquired bank management teams through acquisitions of other banks. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other changes or other amounts due that are probable at settlement.
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount for these items represents the exposure to loss before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Income Taxes	Income Taxes Deferred tax assets and liabilities are recorded for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Future tax benefits are recognized to the extent that realization of such benefits is more likely than not. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the assets and liabilities are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income taxes during the period that includes the enactment date. In the event the future tax consequences of differences between the financial reporting bases and the tax bases of United’s assets and liabilities results in deferred tax assets, an evaluation of the probability of being able to realize the future benefits indicated by such asset is required. A valuation allowance is provided for the portion of the deferred tax asset when it is more likely than not that some or all of the deferred tax asset will not be realized. In assessing the realizability of the deferred tax assets, management considers the scheduled reversals of deferred tax liabilities, projected future taxable earnings and prudent and feasible tax planning strategies. Management weighs both the positive and negative evidence, giving more weight to evidence that can be objectively verified. The income tax benefit or expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50 percent likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. United recognizes interest and / or penalties related to income tax matters in income tax expense.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities United’s interest rate risk management strategy incorporates the use of derivative instruments to minimize fluctuations in net income that are caused by interest rate volatility. United’s goal is to manage interest rate sensitivity by modifying the repricing or maturity characteristics of certain balance sheet assets and liabilities so that net interest revenue is not, on a material basis, adversely affected by movements in interest rates. United views this strategy as a prudent management of interest rate risk, such that net income is not exposed to undue risk presented by changes in interest rates. In carrying out this part of its interest rate risk management strategy, United uses interest rate derivative contracts. The primary type of derivative contract used by United to manage interest rate risk is interest rate swaps. Interest rate swaps generally involve the exchange of fixed- and variable-rate interest payments between two parties, based on a common notional principal amount and maturity date. In addition, United originates certain residential mortgage loans with the intention of selling these loans. Between the time United enters into an interest-rate lock commitment to originate a residential mortgage loan that is to be held for sale and the time the loan is funded and eventually sold, the Company is subject to the risk of variability in market prices. United also enters into forward sale agreements to mitigate risk and to protect the expected gain on the eventual loan sale. Most of this activity is on a matched basis, with a loan sale commitment hedging a specific loan. The commitments to originate residential mortgage loans and forward loan sales commitments are freestanding derivative instruments. To accommodate customers, United occasionally enters into credit risk participation agreements with counterparty banks to accept a portion of the credit risk related to interest rate swaps. This allows customers to execute an interest rate swap with one bank while allowing for the distribution of the credit risk among participating members. Credit risk participation agreements arise when United contracts with other financial institutions, as a guarantor, to share credit risk associated with certain interest rate swaps. These agreements provide for reimbursement of losses resulting from a third party default on the underlying swap. These transactions are typically executed in conjunction with a participation in a loan with the same customer. Collateral used to support the credit risk for the underlying lending relationship is also available to offset the risk of the credit risk participation. United classifies its derivative financial instruments as either (1) a hedge of an exposure to changes in the fair value of a recorded asset or liability (“fair value hedge”), (2) a hedge of an exposure to changes in the cash flows of a recognized asset, liability or forecasted transaction (“cash flow hedge”), or (3) derivatives not designated as accounting hedges. Changes in the fair value of derivatives not designated as hedges are recognized in current period earnings. United has master netting agreements with the derivatives dealers with which it does business, but reflects gross assets and liabilities on the consolidated balance sheet. United uses the long-haul method to assess hedge effectiveness. United documents, both at inception and over the life of the hedge, at least quarterly, its analysis of actual and expected hedge effectiveness. This analysis includes techniques such as regression analysis and hypothetical derivatives to demonstrate that the hedge has been, and is expected to be, highly effective in offsetting corresponding changes in the fair value or cash flows of the hedged item. For a qualifying fair value hedge, changes in the value of derivatives that have been highly effective as hedges are recognized in current period earnings along with the corresponding changes in the fair value of the designated hedged item attributable to the risk being hedged. For a qualifying cash flow hedge, the portion of changes in the fair value of the derivatives that have been highly effective are recognized in other comprehensive income until the related cash flows from the hedged item are recognized in earnings. For fair value hedges and cash flow hedges, ineffectiveness is recognized in the same income statement line as interest accruals on the hedged item to the extent that changes in the value of the derivative instruments do not perfectly offset changes in the value of the hedged items. If the hedge ceases to be highly effective, United discontinues hedge accounting and recognizes the changes in fair value in current period earnings. If a derivative that qualifies as a fair value or cash flow hedge is terminated or the designation removed, the realized or then unrealized gain or loss is recognized into income over the life of the hedged item (fair value hedge) or over the time when the hedged item was forecasted to impact earnings (cash flow hedge). Immediate recognition in earnings is required upon sale or extinguishment of the hedged item (fair value hedge) or if it is probable that the hedged cash flows will not occur (cash flow hedge). By using derivative instruments, United is exposed to credit and market risk. If the counterparty fails to perform, credit risk is represented by the fair value gain in a derivative. When the fair value of a derivative contract is positive, this situation generally indicates that the counterparty is obligated to pay United, and, therefore, creates a repayment risk for United. When the fair value of a derivative contract is negative, United is obligated to pay the counterparty and, therefore, has no repayment risk. United minimizes the credit risk in derivative instruments by entering into transactions with high-quality counterparties that are reviewed periodically by United. United also requires the counterparties to pledge securities as collateral to cover the net exposure. Derivative activities are monitored by the Asset/Liability Management Committee (“ALCO”) as part of that committee’s oversight of asset/liability and treasury functions. ALCO is responsible for implementing various hedging strategies that are developed through its analysis of data from financial simulation models and other internal and industry sources. The resulting hedging strategies are then incorporated into the overall interest-rate risk management process. United recognizes the
Acquisition Activities	Acquisition Activities United accounts for business combinations under the acquisition method of accounting. Assets acquired and liabilities assumed are measured and recorded at fair value at the date of acquisition, including identifiable intangible assets. If the fair value of net assets purchased exceeds the fair value of consideration paid, a bargain purchase gain is recognized at the date of acquisition. Conversely, if the consideration paid exceeds the fair value of the net assets acquired, goodwill is recognized at the acquisition date. Fair values are subject to refinement for a period not to exceed one year after the closing date of an acquisition as information relative to closing date fair values becomes available. The determination of the fair value of loans acquired takes into account credit quality deterioration and probability of loss; therefore, the related allowance for loan losses is not carried forward. All identifiable intangible assets that are acquired in a business combination are recognized at fair value on the acquisition date. Identifiable intangible assets are recognized separately if they arise from contractual or other legal rights or if they are separable (i.e., capable of being sold, transferred, licensed, rented, or exchanged separately from the entity). Deposit liabilities and the related depositor relationship intangible assets may be exchanged in observable exchange transactions. As a result, the depositor relationship intangible asset is considered identifiable, because the separability criterion has been met.
Earnings Per Common Share	Earnings Per Common Share Basic earnings per common share is net income available to common shareholders divided by the weighted average number of shares of common stock outstanding during the period. All outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends are considered participating securities for this calculation. Additionally, shares issuable to participants in United’s deferred compensation plan are considered to be participating securities for purposes of calculating basic earnings per share. Diluted earnings per common share includes the dilutive effect of additional potential shares of common stock issuable under stock options, warrants and securities convertible into common stock.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are such matters that will have a material effect on the financial statements.
Dividend Restrictions	Dividend Restrictions Banking regulations require maintaining certain capital levels and may limit dividends paid by the Bank to United or by United to shareholders. Specifically, dividends paid by the Bank to United require pre-approval of the Georgia Department of Banking and Finance and the FDIC while the Bank has an accumulated deficit (negative retained earnings).
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions as more fully disclosed in Note 24. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect these estimates.
Stock-Based Compensation	Stock-Based Compensation United uses the fair value method of recognizing expense for stock-based compensation based on the fair value of option and restricted stock awards at the date of grant.
Reclassifications	Reclassifications Certain 2015 and 2014 amounts have been reclassified to conform to the 2016 presentation. Specifically, certain loan balances previously shown as retail loans were reclassified to several commercial categories to better align the reporting with the business purpose or underlying credit risk of the loans, rather than the collateral type. At December 31, 2015 and 2014, the reclassifications moved approximately $275 million and $262 million, respectively, in residential mortgages and home equity lines from the residential mortgage and home equity lines of credit categories to the owner-occupied and income-producing commercial real estate categories. Although these loans were secured by one-to-four family residential properties, their purpose was commercial since they included residential home rental property and business purpose loans secured by the borrower’s primary residence. In addition, at December 31, 2015 and 2014, approximately $176 million and $169 million, respectively, in residential construction loans were reclassified to the commercial construction category. These reclassified loans are to builders and developers of residential properties. Reclassifying these balances better aligns the loan categories with the management of credit risk. Historic charge-offs and recoveries on these same loans have also been reclassified, as well as the corresponding allowance for loan loss balances. In April 2015, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2015-03, Interest – Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Business Acquisition [Line Items]
Schedule of actual results and pro forma information	(Unaudited) Year Ended December 31, Revenue Net Income 2016 Actual Tidelands results included in statement of income since acquisition date $ 7,512 $ 1,189 Supplemental consolidated pro forma as if Tidelands had been acquired January 1, 2015 411,088 100,184 2015 Actual Palmetto results included in statement of income since acquisition date $ 17,887 $ 7,010 Actual MoneyTree results included in statement of income since acquisition date 8,373 3,806 Supplemental consolidated pro forma as if Tidelands had been acquired January 1, 2015 and Palmetto and MoneyTree had been acquired January 1, 2014 382,921 82,465 2014 Supplemental consolidated pro forma as if Palmetto and MoneyTree had been acquired January 1, 2014 $ 342,211 $ 72,438
Tidelands Bancshares, Inc
Business Acquisition [Line Items]
Schedule of purchased assets and assumed liabilities	As Recorded Fair Value As Recorded by by Tidelands Adjustments (1) United Assets Cash and cash equivalents $ 13,121 $ - $ 13,121 Securities 65,676 (155 ) 65,521 Loans held for sale 139 3 142 Loans, net 317,938 (12,035 ) 305,903 Premises and equipment, net 19,133 (7,944 ) 11,189 Bank owned life insurance 16,917 - 16,917 Accrued interest receivable 1,086 (167 ) 919 Net deferred tax asset 73 15,639 15,712 Core deposit intangible - 1,570 1,570 Other real estate owned 9,881 (2,386 ) 7,495 Other assets 1,920 (164 ) 1,756 Total assets acquired $ 445,884 $ (5,639 ) $ 440,245 Liabilities Deposits $ 398,108 $ 1,765 $ 399,873 Repurchase agreements 10,000 155 10,155 Federal Home Loan Bank advances 13,000 354 13,354 Long-term debt 14,434 (3,668 ) 10,766 Other liabilities 11,587 (5,986 ) 5,601 Total liabilities assumed 447,129 (7,380 ) 439,749 Excess of assets acquired over liabilities assumed $ (1,245 ) Aggregate fair value adjustments $ 1,741 Total identifiable net assets $ 496 Consideration transferred Cash paid to redeem common stock 2,224 Cash paid to redeem preferred stock issued under the Treasury’s Capital Purchase Program 8,985 Total fair value of consideration transferred 11,209 Goodwill $ 10,713 (1)
Additional information related to acquired loan portfolio at acquisition date	July 1, 2016 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 50,660 Non-accretable difference 13,483 Cash flows expected to be collected 37,177 Accretable yield 2,113 Fair value $ 35,064 Excluded from ASC 310-30: Fair value $ 270,839 Gross contractual amounts receivable 302,331 Estimate of contractual cash flows not expected to be collected 3,859
Palmetto Bank
Business Acquisition [Line Items]
Schedule of purchased assets and assumed liabilities	As Recorded Fair Value As Recorded by by Palmetto Adjustments United Assets Cash and cash equivalents $ 64,906 $ - $ 64,906 Securities 208,407 (340 ) 208,067 Loans held for sale 2,356 91 2,447 Loans, net 802,111 (5,552 ) 796,559 Premises and equipment, net 21,888 (4,931 ) 16,957 Bank owned life insurance 12,133 (148 ) 11,985 Accrued interest receivable 3,227 (346 ) 2,881 Net deferred tax asset 14,798 1,587 16,385 Core deposit intangible - 12,900 12,900 Other assets 18,439 (4,731 ) 13,708 Total assets acquired $ 1,148,265 $ (1,470 ) $ 1,146,795 Liabilities Deposits $ 989,296 $ - $ 989,296 Short-term borrowings 13,537 - 13,537 Other liabilities 11,994 2,808 14,802 Total liabilities assumed 1,014,827 2,808 1,017,635 Excess of assets acquired over liabilities assumed $ 133,438 Aggregate fair value adjustments $ (4,278 ) Total identifiable net assets $ 129,160 Consideration transferred Cash 74,003 Common stock issued (8,700,012 shares) 170,259 Total fair value of consideration transferred 244,262 Goodwill $ 115,102
Additional information related to acquired loan portfolio at acquisition date	September 1, 2015 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 63,623 Non-accretable difference 13,397 Cash flows expected to be collected 50,226 Accretable yield 4,306 Fair value $ 45,920 Excluded from ASC 310-30: Fair value $ 750,639 Gross contractual amounts receivable 859,628 Estimate of contractual cash flows not expected to be collected 7,733
Money Tree Corporation
Business Acquisition [Line Items]
Schedule of purchased assets and assumed liabilities	As Recorded Fair Value As Recorded by by MoneyTree Adjustments United Assets Cash and cash equivalents $ 55,293 $ - $ 55,293 Securities 127,123 (52 ) 127,071 Loans held for sale 1,342 - 1,342 Loans, net 246,816 (2,464 ) 244,352 Premises and equipment, net 9,497 1,362 10,859 Bank owned life insurance 11,194 - 11,194 Core deposit intangible - 4,220 4,220 Other assets 5,462 (399 ) 5,063 Total assets acquired $ 456,727 $ 2,667 $ 459,394 Liabilities Deposits $ 368,833 $ 917 $ 369,750 Short-term borrowings 15,000 - 15,000 Federal Home Loan Bank advances 22,000 70 22,070 Other liabilities 864 1,828 2,692 Total liabilities assumed 406,697 2,815 409,512 SBLF preferred stock assumed 9,992 - 9,992 Excess of assets acquired over liabilities and preferred stock assumed $ 40,038 Aggregate fair value adjustments $ (148 ) Total identifiable net assets $ 39,890 Consideration transferred Cash 10,699 Common stock issued (2,358,503 shares) 43,892 Total fair value of consideration transferred 54,591 Goodwill $ 14,701
Additional information related to acquired loan portfolio at acquisition date	May 1, 2015 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 15,152 Non-accretable difference 3,677 Cash flows expected to be collected 11,475 Accretable yield 1,029 Fair value $ 10,446 Excluded from ASC 310-30: Fair value $ 233,906 Gross contractual amounts receivable 258,931 Estimate of contractual cash flows not expected to be collected 1,231

Balance Sheet Offsetting and 36

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Offsetting [Abstract]
Schedule of summary of amounts outstanding under reverse repurchase agreements	Gross Gross Gross Amounts not Offset December 31, 2016 Recognized the Balance Net Asset Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 150,000 $ (150,000 ) $ - $ - $ - $ - Derivatives 23,688 - 23,688 (3,485 ) (3,366 ) 16,837 Total $ 173,688 $ (150,000 ) $ 23,688 $ (3,485 ) $ (3,366 ) $ 16,837 Weighted average interest rate of reverse repurchase agreements 1.78 % Gross Gross Net Gross Amounts not Offset Recognized the Balance Liability Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 150,000 $ (150,000 ) $ - $ - $ - $ - Derivatives 27,648 - 27,648 (3,485 ) (18,505 ) 5,658 Total $ 177,648 $ (150,000 ) $ 27,648 $ (3,485 ) $ (18,505 ) $ 5,658 Weighted average interest rate of repurchase agreements .88 % Gross Gross Gross Amounts not Offset December 31, 2015 Recognized the Balance Net Asset Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 400,000 $ (400,000 ) $ - $ - $ - $ - Derivatives 20,082 - 20,082 (519 ) (3,729 ) 15,834 Total $ 420,082 $ (400,000 ) $ 20,082 $ (519 ) $ (3,729 ) $ 15,834 Weighted average interest rate of reverse repurchase agreements 1.34 % Gross Gross Net Gross Amounts not Offset Recognized the Balance Liability Financial Collateral Net Repurchase agreements / reverse repurchase agreements $ 400,000 $ (400,000 ) $ - $ - $ - $ - Derivatives 28,825 - 28,825 (519 ) (30,917 ) - Total $ 428,825 $ (400,000 ) $ 28,825 $ (519 ) $ (30,917 ) $ - Weighted average interest rate of repurchase agreements .50 %
Schedule of repurchase agreements remaining contractual maturity of the agreements	Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30 to 90 Days 91 to 110 days Total As of December 31, 2016 Mortgage-backed securities $ - $ - $ 50,000 $ 100,000 $ 150,000 Total $ - $ - $ 50,000 $ 100,000 $ 150,000 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 150,000 Amounts related to agreements not included in offsetting disclosure $ - As of December 31, 2015 U.S. Treasuries $ - $ - $ 100,000 $ - $ 100,000 U.S. Government agencies 32 - - - 32 Mortgage-backed securities 16,608 25,000 175,000 100,000 316,608 Total $ 16,640 $ 25,000 $ 275,000 $ 100,000 $ 416,640 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 400,000 Amounts related to agreements not included in offsetting disclosure $ 16,640

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2016
Investment Securities [Abstract]
Schedule of cost basis, unrealized gains and losses, and fair value of securities held-to-maturity	Gross Gross Amortized Unrealized Unrealized Fair As of December 31, 2016 Cost Gains Losses Value State and political subdivisions $ 57,134 $ 2,197 $ 249 $ 59,082 Mortgage-backed securities (1) 272,709 4,035 2,656 274,088 Total $ 329,843 $ 6,232 $ 2,905 $ 333,170 As of December 31, 2015 State and political subdivisions $ 62,073 $ 3,211 $ - $ 65,284 Mortgage-backed securities (1) 302,623 5,424 1,673 306,374 Total $ 364,696 $ 8,635 $ 1,673 $ 371,658 (1)
Schedule of cost basis, unrealized gains and losses, and fair value of securities available for sale	Gross Gross Amortized Unrealized Unrealized Fair As of December 31, 2016 Cost Gains Losses Value U.S. Treasuries $ 170,360 $ 20 $ 764 $ 169,616 U.S. Government agencies 21,053 6 239 20,820 State and political subdivisions 74,555 176 554 74,177 Mortgage-backed securities (1) 1,397,435 8,924 14,677 1,391,682 Corporate bonds 306,824 591 2,023 305,392 Asset-backed securities 468,742 2,798 1,971 469,569 Other 1,182 - - 1,182 Total $ 2,440,151 $ 12,515 $ 20,228 $ 2,432,438 As of December 31, 2015 U.S. Treasuries $ 169,034 $ 156 $ 484 $ 168,706 U.S. Government agencies 112,394 385 439 112,340 State and political subdivisions 56,265 461 458 56,268 Mortgage-backed securities (1) 1,108,206 12,077 7,165 1,113,118 Corporate bonds 308,102 933 3,009 306,026 Asset-backed securities 538,679 569 6,006 533,242 Other 1,811 - - 1,811 Total $ 2,294,491 $ 14,581 $ 17,561 $ 2,291,511 (1)
Schedule of summary of securities sales activities	2016 2015 2014 Proceeds from sales $ 199,864 $ 353,860 $ 419,201 Gross gains on sales $ 1,647 $ 2,409 $ 6,003 Gross losses on sales (665 ) (154 ) (1,132 ) Net gains on sales of securities $ 982 $ 2,255 $ 4,871 Income tax expense attributable to sales $ 371 $ 862 $ 1,902
Schedule of summary of held to maturity securities in an unrealized loss position	Less than 12 Months 12 Months or More Total As of December 31, 2016 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized State and political subdivisions $ 18,359 $ 249 $ - $ - $ 18,359 $ 249 Mortgage-backed securities 118,164 2,656 - - 118,164 2,656 Total unrealized loss position $ 136,523 $ 2,905 $ - $ - $ 136,523 $ 2,905 As of December 31, 2015 Mortgage-backed securities $ 140,362 $ 1,331 $ 13,127 $ 342 $ 153,489 $ 1,673 Total unrealized loss position $ 140,362 $ 1,331 $ 13,127 $ 342 $ 153,489 $ 1,673
Schedule of summary of available for sale securities in an unrealized loss position	Less than 12 Months 12 Months or More Total As of December 31, 2016 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized U.S. Treasuries $ 145,229 $ 764 $ - $ - $ 145,229 $ 764 U.S. Government agencies 19,685 239 - - 19,685 239 State and political subdivisions 61,782 554 - - 61,782 554 Mortgage-backed securities 810,686 13,952 26,279 725 836,965 14,677 Corporate bonds 228,504 1,597 15,574 426 244,078 2,023 Asset-backed securities 54,477 540 115,338 1,431 169,815 1,971 Total unrealized loss position $ 1,320,363 $ 17,646 $ 157,191 $ 2,582 $ 1,477,554 $ 20,228 As of December 31, 2015 U.S. Treasuries $ 126,066 $ 484 $ - $ - $ 126,066 $ 484 U.S. Government agencies 74,189 439 - - 74,189 439 State and political subdivisions 27,014 458 - - 27,014 458 Mortgage-backed securities 274,005 2,580 173,254 4,585 447,259 7,165 Corporate bonds 221,337 2,759 750 250 222,087 3,009 Asset-backed securities 358,940 5,746 4,816 260 363,756 6,006 Total unrealized loss position $ 1,081,551 $ 12,466 $ 178,820 $ 5,095 $ 1,260,371 $ 17,561
Schedule of amortized cost and fair value of available for sale and held to maturity securities by contractual maturity	Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value US Treasuries: 1 to 5 years $ 116,093 $ 115,702 $ - $ - 5 to 10 years 54,267 53,914 - - 170,360 169,616 - - US Government agencies: 1 to 5 years 2,119 2,123 - - 5 to 10 years 17,904 17,716 - - More than 10 years 1,030 981 - - 21,053 20,820 - - State and political subdivisions: Within 1 year 1,053 1,059 4,506 4,553 1 to 5 years 31,941 31,930 13,850 14,514 5 to 10 years 23,653 23,403 21,192 22,676 More than 10 years 17,908 17,785 17,586 17,339 74,555 74,177 57,134 59,082 Corporate bonds: 1 to 5 years 233,481 233,597 - - 5 to 10 years 72,343 71,120 - - More than 10 years 1,000 675 - - 306,824 305,392 - - Asset-backed securities: 1 to 5 years 16,395 16,598 - - 5 to 10 years 334,071 335,031 - - More than 10 years 118,276 117,940 - - 468,742 469,569 - - Other: More than 10 years 1,182 1,182 - - 1,182 1,182 - - Total securities other than mortgage-backed securities: Within 1 year 1,053 1,059 4,506 4,553 1 to 5 years 400,029 399,950 13,850 14,514 5 to 10 years 502,238 501,184 21,192 22,676 More than 10 years 139,396 138,563 17,586 17,339 Mortgage-backed securities 1,397,435 1,391,682 272,709 274,088 $ 2,440,151 $ 2,432,438 $ 329,843 $ 333,170

Loans and Allowance for Credi38

Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Schedule of major classifications of loans	December 31, 2016 2015 Owner occupied commercial real estate $ 1,650,360 $ 1,570,988 Income producing commercial real estate 1,281,541 1,020,464 Commercial & industrial 1,069,715 784,870 Commercial construction 633,921 518,335 Total commercial 4,635,537 3,894,657 Residential mortgage 856,725 764,175 Home equity lines of credit 655,410 589,325 Residential construction 190,043 176,202 Consumer installment 123,567 115,111 Indirect auto 459,354 455,971 Total loans 6,920,636 5,995,441 Less allowance for loan losses (61,422 ) (68,448 ) Loans, net $ 6,859,214 $ 5,926,993
Schedule of value of the accretable yield for acquired loans	2016 2015 Balance at beginning of period $ 4,279 $ - Additions due to acquisitions 2,113 5,335 Accretion (4,223 ) (1,056 ) Reclassification from nonaccretable difference 3,321 - Changes in expected cash flows that do not affect nonaccretable difference 2,491 - Balance at end of period $ 7,981 $ 4,279
Schedule of summary of loans outstanding	2016 2015 Balance at beginning of period $ 2,732 $ 3,204 New loans and advances 1 40 Repayments (301 ) (512 ) Balance at end of period $ 2,432 $ 2,732
Schedule of balance and activity in allowance for credit losses by portfolio segment	Year Ended December 31, 2016 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,016 $ (2,029 ) $ 706 $ - $ (247 ) $ 16,446 Income producing commercial real estate 11,548 (1,433 ) 580 - (1,852 ) 8,843 Commercial & industrial 4,433 (1,830 ) 1,689 - (482 ) 3,810 Commercial construction 9,553 (837 ) 821 - 3,868 13,405 Residential mortgage 12,719 (1,151 ) 301 - (3,324 ) 8,545 Home equity lines of credit 5,956 (1,690 ) 386 - (53 ) 4,599 Residential construction 4,002 (533 ) 79 - (284 ) 3,264 Consumer installment 828 (1,459 ) 800 - 539 708 Indirect auto 1,393 (1,399 ) 233 - 1,575 1,802 Total allowance for loan losses 68,448 (12,361 ) 5,595 - (260 ) 61,422 Allowance for unfunded commitments 2,542 - - - (540 ) 2,002 Total allowance for credit losses $ 70,990 $ (12,361 ) $ 5,595 $ - $ (800 ) $ 63,424 Year Ended December 31, 2015 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,174 $ (2,901 ) $ 755 $ - $ 1,988 $ 18,016 Income producing commercial real estate 14,517 (1,280 ) 866 - (2,555 ) 11,548 Commercial & industrial 3,252 (1,358 ) 2,174 - 365 4,433 Commercial construction 10,901 (1,947 ) 736 - (137 ) 9,553 Residential mortgage 14,133 (1,615 ) 1,080 - (879 ) 12,719 Home equity lines of credit 4,476 (1,094 ) 242 - 2,332 5,956 Residential construction 4,374 (851 ) 173 - 306 4,002 Consumer installment 731 (1,597 ) 1,044 - 650 828 Indirect auto 1,061 (772 ) 86 - 1,018 1,393 Total allowance for loan losses 71,619 (13,415 ) 7,156 - 3,088 68,448 Allowance for unfunded commitments 1,930 - - - 612 2,542 Total allowance for credit losses $ 73,549 $ (13,415 ) $ 7,156 $ - $ 3,700 $ 70,990 Year Ended December 31, 2014 Beginning Charge- Recoveries Allocation Provision Ending Owner occupied commercial real estate $ 18,823 $ (4,567 ) $ 3,343 $ 1,278 $ (703 ) $ 18,174 Income producing commercial real estate 10,607 (2,671 ) 1,009 688 4,884 14,517 Commercial & industrial 6,504 (2,145 ) 1,665 318 (3,090 ) 3,252 Commercial construction 10,702 (1,574 ) 503 388 882 10,901 Residential mortgage 10,787 (5,011 ) 572 1,452 6,333 14,133 Home equity lines of credit 5,398 (2,314 ) 287 391 714 4,476 Residential construction 5,219 (1,837 ) 135 1,728 (871 ) 4,374 Consumer installment 1,353 (2,008 ) 1,221 - 165 731 Indirect auto 1,126 (540 ) 54 - 421 1,061 Unallocated 6,243 - - (6,243 ) - - Total allowance for loan losses 76,762 (22,667 ) 8,789 - 8,735 71,619 Allowance for unfunded commitments 2,165 - - - (235 ) 1,930 Total allowance for credit losses $ 78,927 $ (22,667 ) $ 8,789 $ - $ 8,500 $ 73,549 Allowance for Loan Losses December 31, 2016 December 31, 2015 Individually Collectively PCI Ending Individually Collectively PCI Ending Owner occupied commercial real estate $ 1,746 $ 14,700 $ - $ 16,446 $ 1,788 $ 16,228 $ - $ 18,016 Income producing commercial real estate 885 7,919 39 8,843 1,705 9,843 - 11,548 Commercial & industrial 58 3,752 - 3,810 274 4,159 - 4,433 Commercial construction 168 13,218 19 13,405 138 9,415 - 9,553 Residential mortgage 517 7,997 31 8,545 2,818 9,901 - 12,719 Home equity lines of credit 2 4,597 - 4,599 6 5,950 - 5,956 Residential construction 64 3,198 2 3,264 55 3,947 - 4,002 Consumer installment 12 696 - 708 13 815 - 828 Indirect auto - 1,802 - 1,802 - 1,393 - 1,393 Total allowance for loan losses 3,452 57,879 91 61,422 6,797 61,651 - 68,448 Allowance for unfunded commitments - 2,002 - 2,002 - 2,542 - 2,542 Total allowance for credit losses $ 3,452 $ 59,881 $ 91 $ 63,424 $ 6,797 $ 64,193 $ - $ 70,990 Loans Outstanding December 31, 2016 December 31, 2015 Individually Collectively PCI Ending Individually Collectively PCI Ending Owner occupied commercial real estate $ 31,421 $ 1,600,355 $ 18,584 $ 1,650,360 $ 40,634 $ 1,516,532 $ 13,822 $ 1,570,988 Income producing commercial real estate 30,459 1,225,763 25,319 1,281,541 26,443 964,563 29,458 1,020,464 Commercial & industrial 1,915 1,066,764 1,036 1,069,715 3,278 780,937 655 784,870 Commercial construction 5,050 620,543 8,328 633,921 17,158 498,838 2,339 518,335 Residential mortgage 13,706 836,624 6,395 856,725 13,831 748,003 2,341 764,175 Home equity lines of credit 63 653,337 2,010 655,410 167 587,470 1,688 589,325 Residential construction 1,594 187,516 933 190,043 1,419 173,857 926 176,202 Consumer installment 290 123,118 159 123,567 329 114,741 41 115,111 Indirect auto 1,165 458,189 - 459,354 749 455,173 49 455,971 Total loans $ 85,663 $ 6,772,209 $ 62,764 $ 6,920,636 $ 104,008 $ 5,840,114 $ 51,319 $ 5,995,441
Schedule of average balances of impaired loans and income recognized on impaired loans	2016 2015 2014 Average Interest Cash Basis Average Interest Cash Basis Average Interest Cash Basis Owner occupied commercial real estate $ 33,297 $ 1,667 $ 1,704 $ 40,182 $ 1,970 $ 2,059 $ 35,641 $ 1,741 $ 1,804 Income producing commercial real estate 31,661 1,418 1,457 25,441 1,260 1,259 30,519 1,505 1,542 Commercial & industrial 2,470 123 118 4,299 163 260 4,226 172 228 Commercial construction 5,879 267 264 18,667 755 759 23,007 897 897 Total commercial 73,307 3,475 3,543 88,589 4,148 4,337 93,393 4,315 4,471 Residential mortgage 14,118 637 633 15,504 612 572 12,640 544 546 Home equity lines of credit 93 4 4 420 17 16 518 21 22 Residential construction 1,677 89 88 2,279 158 169 2,271 137 139 Consumer installment 302 22 23 223 16 16 305 19 22 Indirect auto 928 47 47 221 11 11 - - - Total $ 90,425 $ 4,274 $ 4,338 $ 107,236 $ 4,962 $ 5,121 $ 109,127 $ 5,036 $ 5,200
Schedule of loans individually evaluated for impairment by class of loans	December 31, 2016 December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Owner occupied commercial real estate $ 9,171 $ 8,477 $ - $ 15,584 $ 15,251 $ - Income producing commercial real estate 16,864 16,864 - 13,044 12,827 - Commercial & industrial 421 334 - 493 469 - Commercial construction 845 841 - 3,731 3,429 - Total commercial 27,301 26,516 - 32,852 31,976 - Residential mortgage 630 628 - - - - Home equity lines of credit - - - - - - Residential construction - - - - - - Consumer installment - - - - - - Indirect auto 1,165 1,165 - 749 749 - Total with no related allowance recorded 29,096 28,309 - 33,601 32,725 - With an allowance recorded: Owner occupied commercial real estate 23,574 22,944 1,746 25,642 25,383 1,788 Income producing commercial real estate 13,681 13,595 885 13,850 13,616 1,705 Commercial & industrial 1,679 1,581 58 2,896 2,809 274 Commercial construction 4,739 4,209 168 14,237 13,729 138 Total commercial 43,673 42,329 2,857 56,625 55,537 3,905 Residential mortgage 13,565 13,078 517 14,178 13,831 2,818 Home equity lines of credit 63 63 2 167 167 6 Residential construction 1,947 1,594 64 1,465 1,419 55 Consumer installment 293 290 12 354 329 13 Indirect auto - - - - - - Total with an allowance recorded 59,541 57,354 3,452 72,789 71,283 6,797 Total $ 88,637 $ 85,663 $ 3,452 $ 106,390 $ 104,008 $ 6,797
Schedule of recorded investment in nonaccrual loans	December 31, 2016 2015 Owner occupied commercial real estate $ 7,373 $ 8,545 Income producing commercial real estate 1,324 3,768 Commercial & industrial 966 892 Commercial construction 1,538 1,378 Total commercial 11,201 14,583 Residential mortgage 6,368 5,873 Home equity lines of credit 1,831 851 Residential construction 776 348 Consumer installment 88 175 Indirect auto 1,275 823 Total $ 21,539 $ 22,653
Schedule of aging of the recorded investment in past due loans	Loans Past Due Loans Not As of December 31, 2016 30 - 59 Days 60 - 89 Days > 90 Days Total Past Due PCI Loans Total Owner occupied commercial real estate $ 2,195 $ 1,664 $ 3,386 $ 7,245 $ 1,624,531 $ 18,584 $ 1,650,360 Income producing commercial real estate 1,373 355 330 2,058 1,254,164 25,319 1,281,541 Commercial & industrial 943 241 178 1,362 1,067,317 1,036 1,069,715 Commercial construction 452 14 292 758 624,835 8,328 633,921 Total commercial 4,963 2,274 4,186 11,423 4,570,847 53,267 4,635,537 Residential mortgage 7,221 1,799 1,700 10,720 839,610 6,395 856,725 Home equity lines of credit 1,996 101 957 3,054 650,346 2,010 655,410 Residential construction 950 759 51 1,760 187,350 933 190,043 Consumer installment 633 117 35 785 122,623 159 123,567 Indirect auto 1,109 301 909 2,319 457,035 - 459,354 Total loans $ 16,872 $ 5,351 $ 7,838 $ 30,061 $ 6,827,811 $ 62,764 $ 6,920,636 As of December 31, 2015 Owner occupied commercial real estate $ 4,211 $ 1,823 $ 2,546 $ 8,580 $ 1,548,586 $ 13,822 $ 1,570,988 Income producing commercial real estate 523 1,046 952 2,521 988,485 29,458 1,020,464 Commercial & industrial 858 88 489 1,435 782,780 655 784,870 Commercial construction 715 133 299 1,147 514,849 2,339 518,335 Total commercial 6,307 3,090 4,286 13,683 3,834,700 46,274 3,894,657 Residential mortgage 4,385 1,185 2,067 7,637 754,197 2,341 764,175 Home equity lines of credit 1,047 188 287 1,522 586,115 1,688 589,325 Residential construction 1,624 106 121 1,851 173,425 926 176,202 Consumer installment 610 115 83 808 114,262 41 115,111 Indirect auto 611 311 561 1,483 454,439 49 455,971 Total loans $ 14,584 $ 4,995 $ 7,405 $ 26,984 $ 5,917,138 $ 51,319 $ 5,995,441
Schedule of TDRs including the number of loan contracts restructured and the pre- and post-modification recorded investment	New TDRs Pre- Post- TDRs Modified Within the Year Ended December 31, 2016 Number of Recorded Rate Structure Other Total Number of Recorded Owner occupied commercial real estate 8 $ 2,699 $ - $ 2,699 $ - $ 2,699 1 $ 252 Income producing commercial real estate 1 257 - 257 - 257 - - Commercial & industrial 5 1,012 - 1,012 - 1,012 2 34 Commercial construction 3 458 - 393 65 458 - - Total commercial 17 4,426 - 4,361 65 4,426 3 286 Residential mortgage 28 3,262 1,992 1,135 40 3,167 1 85 Home equity lines of credit 1 38 38 - - 38 - - Residential construction 7 584 46 376 82 504 - - Consumer installment 6 71 13 58 - 71 - - Indirect auto 35 966 - - 966 966 - - Total loans 94 $ 9,347 $ 2,089 $ 5,930 $ 1,153 $ 9,172 4 $ 371 Year Ended December 31, 2015 Owner occupied commercial real estate 14 $ 13,592 $ - $ 13,266 $ 199 $ 13,465 1 $ 178 Income producing commercial real estate 7 2,135 45 2,090 - 2,135 - - Commercial & industrial 9 1,325 - 899 347 1,246 - - Commercial construction 2 580 - 580 - 580 - - Total commercial 32 17,632 45 16,835 546 17,426 1 178 Residential mortgage 32 2,847 144 2,369 334 2,847 1 2 Home equity lines of credit 2 187 - 177 - 177 - - Residential construction 4 222 - 198 - 198 - - Consumer installment 10 222 - 204 18 222 2 32 Indirect auto - - - - - - - - Total loans 80 $ 21,110 $ 189 $ 19,783 $ 898 $ 20,870 4 $ 212 Year Ended December 31, 2014 Owner occupied commercial real estate 12 $ 4,793 $ 229 $ 4,564 $ - $ 4,793 2 $ 346 Income producing commercial real estate 10 2,026 411 911 704 2,026 - - Commercial & industrial 9 1,185 216 969 - 1,185 2 54 Commercial construction 9 1,953 - 1,632 321 1,953 - - Total commercial 40 9,957 856 8,076 1,025 9,957 4 400 Residential mortgage 32 3,055 338 2,173 367 2,878 8 650 Home equity lines of credit 1 36 - - 36 36 - - Residential construction 1 138 - 138 - 138 - - Consumer installment 5 226 - 144 82 226 - - Indirect auto - - - - - - - - Total loans 79 $ 13,412 $ 1,194 $ 10,531 $ 1,510 $ 13,235 12 $ 1,050
Schedule of loans modified under the terms of TDR	December 31, 2016 December 31, 2015 Number of Pre- Post- Number of Pre- Post- Owner occupied commercial real estate 63 $ 26,882 $ 26,192 68 $ 34,119 $ 33,633 Income producing commercial real estate 55 23,710 23,684 60 19,237 19,059 Commercial & industrial 16 1,515 1,429 25 2,894 2,809 Commercial construction 29 5,500 5,049 38 15,045 14,592 Total commercial 163 57,607 56,354 191 71,295 70,093 Residential mortgage 134 13,995 13,706 128 13,992 13,831 Home equity lines of credit 1 63 63 2 167 167 Residential construction 27 1,925 1,594 21 1,464 1,419 Consumer installment 19 292 290 22 348 329 Indirect auto 65 1,165 1,165 49 749 749 Total loans 409 $ 75,047 $ 73,172 413 $ 88,015 $ 86,588
Schedule of risk category of loans by class of loans	As of December 31, 2016 Pass Watch Substandard Doubtful / Total Owner occupied commercial real estate $ 1,577,301 $ 18,029 $ 36,446 $ - $ 1,631,776 Income producing commercial real estate 1,220,626 8,502 27,094 - 1,256,222 Commercial & industrial 1,055,282 4,188 9,209 - 1,068,679 Commercial construction 612,900 6,166 6,527 - 625,593 Total commercial 4,466,109 36,885 79,276 - 4,582,270 Residential mortgage 829,844 - 20,486 - 850,330 Home equity lines of credit 647,425 - 5,975 - 653,400 Residential construction 185,643 - 3,467 - 189,110 Consumer installment 122,736 - 672 - 123,408 Indirect auto 456,717 - 2,637 - 459,354 Total loans, excluding PCI loans $ 6,708,474 $ 36,885 $ 112,513 $ - $ 6,857,872 Owner occupied commercial real estate $ 2,044 $ 3,444 $ 13,096 $ - $ 18,584 Income producing commercial real estate 13,236 8,474 3,609 - 25,319 Commercial & industrial 216 160 660 - 1,036 Commercial construction 3,212 1,265 3,851 - 8,328 Total commercial 18,708 13,343 21,216 - 53,267 Residential mortgage 5,189 - 1,206 - 6,395 Home equity lines of credit 1,094 - 916 - 2,010 Residential construction 898 - 35 - 933 Consumer installment 159 - - - 159 Indirect auto - - - - - Total PCI loans $ 26,048 $ 13,343 $ 23,373 $ - $ 62,764 As of December 31, 2015 Owner occupied commercial real estate $ 1,483,109 $ 25,926 $ 48,131 $ - $ 1,557,166 Income producing commercial real estate 956,168 7,439 27,399 - 991,006 Commercial & industrial 769,801 8,110 6,304 - 784,215 Commercial construction 499,649 6,943 9,404 - 515,996 Total commercial 3,708,727 48,418 91,238 - 3,848,383 Residential mortgage 740,129 31 21,674 - 761,834 Home equity lines of credit 581,385 24 6,228 - 587,637 Residential construction 171,961 - 3,315 - 175,276 Consumer installment 114,178 - 892 - 115,070 Indirect auto 453,935 - 1,987 - 455,922 Total loans, excluding PCI loans $ 5,770,315 $ 48,473 $ 125,334 $ - $ 5,944,122 Owner occupied commercial real estate $ 1,811 $ 6,808 $ 4,854 $ 349 $ 13,822 Income producing commercial real estate 9,378 6,073 14,007 - 29,458 Commercial & industrial 17 83 505 50 655 Commercial construction 1,698 45 596 - 2,339 Total commercial 12,904 13,009 19,962 399 46,274 Residential mortgage - - 2,341 - 2,341 Home equity lines of credit 214 - 1,474 - 1,688 Residential construction 345 - 69 512 926 Consumer installment 1 - 40 - 41 Indirect auto - - 49 - 49 Total PCI loans $ 13,464 $ 13,009 $ 23,935 $ 911 $ 51,319

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Schedule of premises and equipments	December 31, 2016 2015 Land and land improvements $ 79,946 $ 79,686 Buildings and improvements 135,004 127,493 Furniture and equipment 79,597 68,309 Construction in progress 5,747 3,787 300,294 279,275 Less accumulated depreciation (110,356 ) (101,110 ) Premises and equipment, net $ 189,938 $ 178,165
Schedule of rent commitments under operating leases	2017 $ 4,028 2018 3,663 2019 3,545 2020 3,419 2021 3,284 Thereafter 11,151 Total $ 29,090

Goodwill and Other Intangible40

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule goodwill and other intangible assets	December 31, 2016 2015 Core deposit intangible $ 51,342 $ 49,772 Less: accumulated amortization (37,145 ) (32,964 ) Total intangibles subject to amortization, net 14,197 16,808 Goodwill 142,025 130,612 Total goodwill and other intangible assets, net $ 156,222 $ 147,420
Schedule of changes in the carrying amounts of goodwill	Goodwill, net of Accumulated Accumulated Impairment Impairment Goodwill Losses Losses December 31, 2014 $ 307,099 $ (305,590 ) $ 1,509 Acquisition of Palmetto 114,402 - 114,402 Acquisition of MoneyTree 14,701 - 14,701 December 31, 2015 436,202 (305,590 ) 130,612 Acquisition of Tidelands 10,713 - 10,713 Measurement period adjustments 700 - 700 December 31, 2016 $ 447,615 $ (305,590 ) $ 142,025
Schedule of amortization expense for future periods	Year 2017 $ 3,413 2018 2,690 2019 2,171 2020 1,678 2021 1,214 Thereafter 3,031 Total $ 14,197

Foreclosed Property (Tables)

Foreclosed Property (Tables)	12 Months Ended
	Dec. 31, 2016
Repossessed Assets [Abstract]
Schedule of classifications of foreclosed properties	2016 2015 Commercial real estate $ 3,181 $ 2,652 Commercial construction 2,977 437 Total commercial 6,158 3,089 Residential mortgage 1,791 1,322 Residential construction - 472 Total foreclosed property $ 7,949 $ 4,883

Servicing Rights (Tables)

Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2016
Transfers and Servicing [Abstract]
Schedule of changes in the balances of servicing assets and servicing liabilities subsequently measured using the fair value measurement method	2016 2015 2014 Servicing rights for government guaranteed loans, beginning of period $ 3,712 $ 2,551 $ - Additions: Acquired servicing rights - 137 2,133 Originated servicing rights capitalized upon sale of loans 2,723 1,699 832 Subtractions: Disposals (393 ) (353 ) (152 ) Changes in fair value: Due to change in valuation inputs or assumptions used in the valuation model (290 ) (322 ) (262 ) Servicing rights for government guaranteed loans, end of period $ 5,752 $ 3,712 $ 2,551
Schedule of key characteristics, inputs, and economic assumptions used to estimate the fair value of SBA Servicing Asset	December 31, 2016 2015 Fair value of retained servicing assets $ 5,752 $ 3,712 Prepayment rate assumption 7.12 % 6.95 % 10% adverse change $ (132 ) $ (84 ) 20% adverse change $ (257 ) $ (163 ) Discount rate 11.0 % 11.8 % 100 bps adverse change $ (167 ) $ (109 ) 200 bps adverse change $ (324 ) $ (212 ) Weighted-average life (years) 6.8 6.7 Weighted-average gross margin 1.86 % 2.02 %
Schedule of changes in residential mortgage servicing rights	2016 2015 Residential mortgage servicing rights, net of valuation allowance, beginning of period $ 3,370 $ - Additions: Acquired servicing rights - 3,454 Originated servicing rights capitalized upon sale of loans 2,124 199 Subtractions: Amortization (1,117 ) (273 ) Impairment (5 ) (10 ) Residential mortgage servicing rights, net of valuation allowance, end of period $ 4,372 $ 3,370
Schedule of valuation allowance for impairment of the residential mortgage servicing rights portfolio	2016 2015 Valuation allowance, beginning of period $ 10 $ - Additions charged to operations, net 5 10 Valuation allowance, end of period $ 15 $ 10
Schedule of estimated future amortization expense of servicing rights	2017 $ 1,081 2018 876 2019 706 2020 564 2021 447 thereafter 698 $ 4,372

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2016
Deposits [Abstract]
Schedule of summary of contractual maturities of time deposits	2017 $ 990,154 2018 172,710 2019 58,730 2020 32,488 2021 35,453 thereafter 87,471 $ 1,377,006

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Long-term Debt, Unclassified [Abstract]
Schedule of long-term debt	Stated Earliest December 31, Issue Maturity Call 2016 2015 Date Date Date Interest Rate 2017 senior debentures $ 35,000 $ 35,000 2012 2017 2017 9.000% 2018 senior debentures 40,000 40,000 2013 2018 2015 6.000% 2022 senior debentures 50,000 50,000 2015 2022 2020 5.000% through August 13, 2020, 3-month LIBOR plus 3.814% thereafter 2027 senior debentures 35,000 35,000 2015 2027 2025 5.500% through August 13, 2025 3-month LIBOR plus 3.71% thereafter Total senior debentures 160,000 160,000 Southern Bancorp Capital Trust I 4,382 4,382 2004 2034 2009 Prime + 1.00% United Community Statutory Trust III 1,238 1,238 2008 2038 2013 Prime + 3.00% Tidelands Statutory Trust I 8,248 - 2006 2036 2011 3-month LIBOR plus 1.38% Tidelands Statutory Trust II 6,186 - 2008 2038 2013 3-month LIBOR plus 5.075% Total trust preferred securities 20,054 5,620 Less discount (4,976 ) (1,784 ) Total long-term debt $ 175,078 $ 163,836

Reclassifications Out of Accu45

Reclassifications Out of Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2016
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Schedule of details regarding amounts reclassified out of accumulated other comprehensive income	Amounts Reclassified from Accumulated Details about Accumulated Other Other Comprehensive Income Affected Line Item in the Statement Comprehensive Income Components 2016 2015 2014 Where Net Income is Presented Realized gains on available-for-sale securities: $ 982 $ 2,255 $ 4,871 Securities gains, net (371 ) (862 ) (1,902 ) Tax expense $ 611 $ 1,393 $ 2,969 Net of tax Amortization of losses included in net income on available-for-sale securities transferred to held to maturity: $ (1,759 ) $ (1,702 ) $ (1,656 ) Investment securities interest revenue 662 638 622 Tax benefit $ (1,097 ) $ (1,064 ) $ (1,034 ) Net of tax Amounts included in net income on derivative financial instruments accounted for as cash flow hedges: Effective portion of interest rate contracts $ - $ - $ (764 ) Time deposit interest expense Effective portion of interest rate contracts - - (223 ) Money market deposit interest expense Amortization of losses on de-designated positions (7 ) (129 ) (79 ) Deposits in banks and short-term investments interest revenue Amortization of losses on de-designated positions (647 ) (695 ) (198 ) Money market deposit interest expense Amortization of losses on de-designated positions (1,237 ) (1,112 ) (234 ) Federal Home Loan Bank advances interest expense Amortization of losses on de-designated positions - - (512 ) Time deposit interest expense (1,891 ) (1,936 ) (2,010 ) Total before tax 736 753 782 Tax benefit $ (1,155 ) $ (1,183 ) $ (1,228 ) Net of tax Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan Prior service cost $ (501 ) $ (465 ) $ (365 ) Salaries and employee benefits expense Actuarial losses (354 ) (271 ) - Salaries and employee benefits expense (855 ) (736 ) (365 ) Total before tax 333 286 142 Tax benefit $ (522 ) $ (450 ) $ (223 ) Net of tax Total reclassifications for the period $ (2,163 ) $ (1,304 ) $ 484 Net of tax Amounts shown above in parentheses reduce earnings

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Schedule of accrued dividends on preferred stock, including accretion of discounts	Year Ended December 31, 2016 2015 2014 Series B - 5% fixed until December 6, 2013, 9% thereafter $ - $ - $ 159 Series D - LIBOR plus 9.6875%, resets quarterly - - 280 Series H - 1% until March 15, 2016, 9% thereafter 21 67 - Total preferred stock dividends $ 21 $ 67 $ 439
Schedule of computation of basic and diluted loss per share	Year Ended December 31, 2016 2015 2014 Net income available to common stockholders $ 100,635 $ 71,511 $ 67,181 Income per common share: Basic $ 1.40 $ 1.09 $ 1.11 Diluted 1.40 1.09 1.11 Weighted average common shares: Basic 71,910 65,488 60,588 Effect of dilutive securities: Stock options 5 4 2 Diluted 71,915 65,492 60,590

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Taxes [Abstract]
Schedule of income tax expense (benefit)	Year Ended December 31, 2016 2015 2014 Current $ 2,609 $ 5,140 $ 1,224 Deferred 59,160 37,685 37,524 Increase in valuation allowance 567 611 702 Total income tax expense $ 62,336 $ 43,436 $ 39,450
Schedule of differences between the provision for income taxes and statutory federal income tax rate	Year Ended December 31, 2016 2015 2014 Pretax income at statutory rates $ 57,047 $ 40,255 $ 37,475 Add (deduct): State taxes, net of federal benefit 5,013 3,537 3,365 Bank owned life insurance earnings (572 ) (348 ) (209 ) Adjustment to reserve for uncertain tax positions (58 ) (136 ) (200 ) Tax-exempt interest revenue (573 ) (662 ) (757 ) Equity compensation 976 - - Transaction costs 92 509 - Tax credits (149 ) (190 ) (250 ) Change in state statutory tax rate 250 340 - Increase in valuation allowance 567 611 702 Other (257 ) (480 ) (676 ) Total income tax expense $ 62,336 $ 43,436 $ 39,450
Schedule of summarizes the sources and expected tax consequences of future taxable deductions (revenue)	December 31, 2016 2015 Deferred tax assets: Allowance for loan losses $ 23,025 $ 25,840 Net operating loss carryforwards 112,805 155,757 Deferred compensation 9,778 8,727 Loan purchase accounting adjustments 10,529 7,940 Reserve for losses on foreclosed properties 822 2,025 Nonqualified share based compensation 1,567 3,628 Accrued expenses 4,420 3,990 Investment in partnerships 1,417 1,814 Unamortized pension actuarial losses and prior service cost 2,365 2,151 Unrealized losses on securities available-for-sale 3,982 2,943 Unrealized losses on cash flow hedges 561 1,351 Derivatives 609 936 Premises and equipment 764 - Other 2,965 2,174 Total deferred tax assets 175,609 219,276 Deferred tax liabilities: Acquired intangible assets 3,485 5,034 Premises and equipment - 398 Loan origination costs 5,885 5,030 Prepaid expenses 689 729 Servicing asset 3,437 2,208 Uncertain tax positions 3,892 3,981 Total deferred tax liabilities 17,388 17,380 Less valuation allowance 3,885 4,283 Net deferred tax asset $ 154,336 $ 197,613
Schedule of reconciliation of the beginning and ending unrecognized tax benefit	2016 2015 2014 Balance at beginning of year $ 3,981 $ 4,195 $ 4,503 Additions based on tax positions related to the current year 400 371 374 Decreases resulting from a lapse in the applicable statute of limitations (489 ) (585 ) (682 ) Balance at end of year $ 3,892 $ 3,981 $ 4,195

Pension and Employee Benefit 48

Pension and Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Pension and Employee Benefit Plans [Abstract]
Schedule of weighted-average assumptions used to determine pension benefit obligations	2016 2015 Modified Modified Retirement Funded Retirement Funded Plan Plan Plan Plan Discount rate for disclosures 4.00 % 4.25 % 4.25 % 4.53 % Discount rate for net periodic benefit cost 4.00 % 4.53 % 4.00 % 4.50 % Expected long-term rate of return N/A 4.00 % N/A 6.30 % Rate of compensation increase N/A N/A N/A N/A Measurement date 12/31/2016 12/31/2016 12/31/2015 12/31/2015
Schedule of changes in obligations and plan assets	2016 2015 Modified Modified Retirement Funded Retirement Funded Plan Plan Plan Plan Accumulated benefit obligation: Accumulated benefit obligation - beginning of year $ 17,595 $ 19,246 $ 15,869 $ - Business combinations - - - 19,620 Service cost 382 - 376 - Interest cost 740 842 628 292 Plan amendments 454 - 1,353 - Actuarial (gains) losses 605 347 (297 ) 136 Benefits paid (368 ) (1,934 ) (334 ) (802 ) Accumulated benefit obligation - end of year 19,408 18,501 17,595 19,246 Change in plan assets, at fair value: Beginning plan assets - 17,315 - - Business combinations - - - 18,028 Actual return - 883 - 89 Employer contribution 368 - 334 - Benefits paid (368 ) (1,934 ) (334 ) (802 ) Plan assets - end of year - 16,264 - 17,315 Funded status - end of year (plan assets less benefit obligations) $ (19,408 ) $ (2,237 ) $ (17,595 ) $ (1,931 )
Schedule of components of net periodic benefit cost and other amounts recognized in other comprehensive income	2016 2015 2014 Modified Modified Modified Retirement Funded Retirement Funded Retirement Plan Plan Plan Plan Plan Service cost $ 382 $ - $ 376 $ - $ 341 Interest cost 740 842 628 292 579 Expected return on plan assets - (696 ) - (375 ) - Amortization of prior service cost 501 - 465 - 365 Amortization of net losses 167 - 271 - - Net periodic benefit cost $ 1,790 $ 146 $ 1,740 $ (83 ) $ 1,285
Schedule of Estimated future benefit payments	Modified Retirement Funded Plan Plan 2017 $ 419 $ 1,072 2018 1,072 1,107 2019 1,066 1,122 2020 1,149 1,127 2021 1,142 1,154 2022-2026 5,638 5,654 $ 10,486 $ 11,236
Schedule of Funded Plan assets	December 31, 2016 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 645 $ - $ - $ 645 Mutual funds 874 - - 874 Corporate stocks 1,184 193 - 1,377 Exchange traded funds 13,368 - - 13,368 Total plan assets $ 16,071 $ 193 $ - $ 16,264 December 31, 2015 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 2,346 $ - $ - $ 2,346 Mutual funds 857 - - 857 Corporate stocks 1,178 - - 1,178 Exchange traded funds 12,902 - - 12,902 Other 32 - - 32 Total plan assets $ 17,315 $ - $ - $ 17,315

Derivatives and Hedging Activ49

Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2016
Derivatives and Hedging Activities [Abstract]
Schedule of derivative financial instruments on consolidated balance sheet	Derivatives designated as hedging instruments under ASC 815 Fair Value Balance Sheet December 31, Interest Rate Products Location 2016 2015 Fair value hedge of corporate bonds Derivative assets $ 265 $ 31 $ 265 $ 31 Fair value hedge of brokered CD’s Derivative liabilities $ 1,980 $ 2,169 $ 1,980 $ 2,169 Derivatives not designated as hedging instruments under ASC 815 Fair Value Balance Sheet December 31, Interest Rate Products Location 2016 2015 Customer derivative positions Derivative assets $ 5,266 $ 6,185 Dealer offsets to customer derivative positions Derivative assets 3,869 31 Mortgage banking - loan commitment Derivative assets 1,552 188 Mortgage banking - forward sales commitment Derivative assets 534 1 Bifurcated embedded derivatives Derivative assets 10,225 9,230 Offsetting positions for de-designated cash flow hedges Derivative assets 1,977 4,416 $ 23,423 $ 20,051 Customer derivative positions Derivative liabilities $ 3,897 $ 31 Dealer offsets to customer derivative positions Derivative liabilities 5,328 6,339 Risk participations Derivative liabilities 26 - Mortgage banking - forward sales commitment Derivative liabilities 96 22 Dealer offsets to bifurcated embedded derivatives Derivative liabilities 14,341 15,794 De-designated cash flow hedges Derivative liabilities 1,980 4,470 $ 25,668 $ 26,656
Schedule of effect of United's derivative financial instruments on the consolidated statement of income	Amount of Gain (Loss) Recognized Gain (Loss) Reclassified from Accumulated Other Gain (Loss) Recognized in Income on Derivative 2016 2015 2014 Location 2016 2015 2014 Location 2016 2015 2014 Interest revenue $ (7 ) $ - $ (79 ) Interest expense (1,884 ) (1,936 ) (1,931 ) Interest rate swaps $ - $ (471 ) $ (8,437 ) $ (1,891 ) $ (1,936 ) $ (2,010 ) Interest expense $ - $ (7 ) $ (107 )
Schedule of effect of cash flow hedging derivative financial instruments on other comprehensive income	Location of Gain (Loss) Recognized Amount of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in in Income Income on Derivative Income on Hedged Item on Derivative 2016 2015 2014 2016 2015 2014 Fair value hedges of brokered CD’s Interest expense $ 1,972 $ 1,814 $ 13,400 $ 458 $ (1,507 ) $ (14,357 ) Fair value hedges of corporate bonds Interest revenue 234 31 (2,487 ) (376 ) (128 ) 2,163 $ 2,206 $ 1,845 $ 10,913 $ 82 $ (1,635 ) $ (12,194 )
Schedule of gains and losses recognized in income on derivatives not designated as hedging instruments	Income Statement Year Ended December 31, Location 2016 2015 2014 Customer derivatives and dealer offsets Other fee revenue $ 3,744 $ 1,713 $ 729 Bifurcated embedded derivatives and dealer offsets Other fee revenue 297 43 82 Mortgage banking derivatives Mortgage loan revenue 3,002 - - Risk participations Other fee revenue 360 - - Total gains and losses $ 7,403 $ 1,756 $ 811

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Schedule of minimum amounts required for capital adequacy purposes	United Community Banks, Inc. Basel III Guidelines (consolidated) United Community Bank Well Minimum Capitalized 2016 2015 2016 2015 Risk-based ratios: Common equity tier 1 capital 4.5 % 6.5 % 11.23 % 11.45 % 12.66 % 13.01 % Tier 1 capital 6.0 8.0 11.23 11.45 12.66 13.01 Total capital 8.0 10.0 12.04 12.50 13.48 14.06 Tier 1 leverage ratio 4.0 5.0 8.54 8.34 9.63 9.47 Common equity tier 1 capital $ 874,452 $ 773,677 $ 984,529 $ 877,169 Tier 1 capital 874,452 773,677 984,529 877,169 Total capital 937,876 844,667 1,047,953 948,159 Risk-weighted assets 7,789,089 6,755,011 7,775,352 6,743,560 Average total assets 10,236,868 9,282,243 10,221,318 9,264,133

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies [Abstract]
Schedule of the contract amount of off-balance sheet instruments	2016 2015 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 1,542,186 $ 1,351,446 Letters of credit 26,862 23,373 Minimum Lease Payments 29,090 23,507

Equity Compensation and Relat52

Equity Compensation and Related Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Schedule of restricted stock and options outstanding and activity	Restricted Stock Options Weighted Weighted Weighted Average Average Average Aggregate Grant Date Exercise Remaining Intrinsic Shares Fair Value Shares Price Term (Yrs.) Value (000’s) December 31, 2013 1,073,676 13.73 350,772 97.87 Granted 97,016 17.33 10,000 16.71 Vested (336,691 ) 12.23 - - Expired - - (32,810 ) 115.83 Cancelled (4,800 ) 13.78 (14,407 ) 97.80 December 31, 2014 829,201 14.76 313,555 93.40 Granted 265,306 18.66 - - Vested (305,902 ) 14.00 - - Expired - - (45,866 ) 108.93 Cancelled (75,938 ) 15.63 (26,196 ) 98.36 December 31, 2015 712,667 16.44 241,493 89.92 Granted 302,012 21.42 - - Vested (261,729 ) 16.14 - - Expired - - (52,853 ) 135.32 Cancelled (61,980 ) 17.99 (115,975 ) 104.05 December 31, 2016 690,970 18.60 72,665 34.34 3.59 $ 393 Vested / Exercisable at December 31, 2016 - - 66,415 36.03 3.22 311
Schedule of summary of stock options outstanding	Options Outstanding Options Exercisable Weighted Average Weighted Shares Range Average Price Remaining Life Shares Average Price 26,823 $ 10.00 - 30.00 $ 14.96 6.01 20,573 $ 14.53 37,052 30.01 - 50.00 31.47 2.49 37,052 31.47 4,551 50.01 - 70.00 66.40 1.34 4,551 66.40 4,239 130.01 - 147.60 147.60 0.31 4,239 147.60 72,665 10.00 - 147.60 34.34 3.59 66,415 36.03
Schedule of weighted average assumptions used to determine the fair value of options	2014 Expected volatility 66 % Expected dividend yield 1.0 % Expected life (in years) 6.25 Risk free rate 2.1 %

Assets and Liabilities Measur53

Assets and Liabilities Measured at Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	December 31, 2016 Level 1 Level 2 Level 3 Total Assets: Securities available for sale: U.S. Treasuries $ 169,616 $ - $ - $ 169,616 U.S. Agencies - 20,820 - 20,820 State and political subdivisions - 74,177 - 74,177 Mortgage-backed securities - 1,391,682 - 1,391,682 Corporate bonds - 304,717 675 305,392 Asset-backed securities - 469,569 - 469,569 Other - 1,182 - 1,182 Mortgage loans held for sale - 27,891 - 27,891 Deferred compensation plan assets 4,161 - - 4,161 Servicing rights for government guaranteed loans - - 5,752 5,752 Derivative financial instruments - 11,911 11,777 23,688 Total assets $ 173,777 $ 2,301,949 $ 18,204 $ 2,493,930 Liabilities: Deferred compensation plan liability $ 4,161 $ - $ - $ 4,161 Derivative financial instruments - 11,301 16,347 27,648 Total liabilities $ 4,161 $ 11,301 $ 16,347 $ 31,809 December 31, 2015 Level 1 Level 2 Level 3 Total Assets: Securities available for sale U.S. Treasuries $ 168,706 $ - $ - $ 168,706 U.S. Agencies - 112,340 - 112,340 State and political subdivisions - 56,268 - 56,268 Mortgage-backed securities - 1,113,118 - 1,113,118 Corporate bonds - 305,276 750 306,026 Asset-backed securities - 533,242 - 533,242 Other - 1,811 - 1,811 Deferred compensation plan assets 3,450 - - 3,450 Servicing rights for government guaranteed loans - - 3,712 3,712 Derivative financial instruments - 10,664 9,418 20,082 Total assets $ 172,156 $ 2,132,719 $ 13,880 $ 2,318,755 Liabilities: Deferred compensation plan liability $ 3,450 $ - $ - $ 3,450 Derivative financial instruments - 13,031 15,794 28,825 Total liabilities $ 3,450 $ 13,031 $ 15,794 $ 32,275
Schedule of assets measured at fair value on a recurring basis using significant unobservable inputs	Derivative Derivative Servicing Securities December 31, 2013 $ - $ - $ - $ 350 Business combinations - - 2,133 - Additions - - 832 - Sales and settlements - - (152 ) - Other comprehensive income - - - 400 Amounts included in earnings - fair value adjustments - - (262 ) - Transfers between valuation levels, net 12,262 18,979 - - December 31, 2014 12,262 18,979 2,551 750 Business combinations 286 - 137 - Additions 311 - 1,699 - Sales and settlements (409 ) - (353 ) - Amounts included in earnings - fair value adjustments (3,032 ) (3,185 ) (322 ) - December 31, 2015 9,418 15,794 3,712 750 Additions - 17 2,723 - Sales and settlements (509 ) (1,001 ) (393 ) - Other comprehensive income - - - (75 ) Amounts included in earnings - fair value adjustments 2,868 1,537 (290 ) - December 31, 2016 $ 11,777 $ 16,347 $ 5,752 $ 675
Schedule of quantitative information about Level 3 fair value measurements for fair value on a recurring basis	Fair Value Weighted Average December 31, Valuation December 31, Level 3 Assets 2016 2015 Technique Unobservable Inputs 2016 2015 Servicing rights $ 5,752 $ 3,712 Discounted Discount rate 11.0 % 11.8 % for government guaranteed loans cash flow Prepayment rate 7.12 % 6.95 % Corporate bonds 675 750 Indicative bid provided by a broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company N/A N/A Derivative assets - mortgage 1,552 188 Internal model Pull through rate 80 % 85 % Derivative assets - other 10,225 9,230 Dealer priced Dealer priced N/A N/A Derivative liabilities - risk 26 - Internal model Probable exposure rate 0.35 % N/A participations Probability of default rate 1.80 % N/A Derivative liabilities - other 16,321 15,794 Dealer priced Dealer priced N/A N/A
Schedule of presentation of United's assets and liabilities measured at fair value on nonrecurring basis	December 31, 2016 Level 1 Level 2 Level 3 Total Loans $ - $ - $ 7,179 $ 7,179 December 31, 2015 Loans $ - $ - $ 7,589 $ 7,589
Schedule of summary of carrying amount and fair values for other financial instruments not measured at fair value on a recurring basis	Carrying Fair Value Level December 31, 2016 Amount Level 1 Level 2 Level 3 Total Assets: Securities held to maturity $ 329,843 $ - $ 333,170 $ - $ 333,170 Loans, net 6,859,214 - - 6,824,229 6,824,229 Mortgage loans held for sale 1,987 - 2,018 - 2,018 Residential mortgage servicing rights 4,372 - - 5,175 5,175 Liabilities: Deposits 8,637,558 - 8,635,811 - 8,635,811 Federal Home Loan Bank advances 709,209 - 709,174 - 709,174 Long-term debt 175,078 - - 175,750 175,750 December 31, 2015 Assets: Securities held to maturity 364,696 - 371,658 - 371,658 Loans, net 5,926,993 - - 5,840,554 5,840,554 Mortgage loans held for sale 24,231 - 24,660 - 24,660 Residential mortgage servicing rights 3,370 - - 3,521 3,521 Liabilities: Deposits 7,873,193 - 7,881,109 - 7,881,109 Federal Home Loan Bank advances 430,125 - 430,119 - 430,119 Long-term debt 163,836 - - 166,668 166,668

Condensed Financial Statement54

Condensed Financial Statements of United Community Banks Inc. (Parent Only) (Tables)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Statements of United Community Banks, Inc. (Parent Only) [Abstract]
Schedule of statement of operations	2016 2015 2014 Dividends from bank $ 41,500 $ 77,500 $ 129,000 Dividends from other subsidiaries - 3,500 3,000 Shared service fees from subsidiaries 8,476 7,628 8,057 Other 685 123 424 Total income 50,661 88,751 140,481 Interest expense 11,209 10,385 11,550 Other expense 11,380 11,185 9,868 Total expenses 22,589 21,570 21,418 Income tax benefit 6,717 1,709 2,357 Income before equity in undistributed earnings of subsidiaries 34,789 68,890 121,420 Equity in undistributed earnings of subsidiaries 65,867 2,688 (53,800 ) Net income $ 100,656 $ 71,578 $ 67,620
Schedule of balance sheet	Assets 2016 2015 Cash $ 42,980 $ 50,338 Investment in bank 1,201,868 1,112,496 Investment in other subsidiaries 3,731 2,360 Other assets 17,800 32,730 Total assets $ 1,266,379 $ 1,197,924 Liabilities and Shareholders’ Equity Long-term debt $ 175,078 $ 165,620 Other liabilities 15,566 14,019 Total liabilities 190,644 179,639 Shareholders’ equity 1,075,735 1,018,285 Total liabilities and shareholders’ equity $ 1,266,379 $ 1,197,924
Schedule of statement of cash flows	2016 2015 2014 Operating activities: Net income $ 100,656 $ 71,578 $ 67,620 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed earnings of the subsidiaries (65,867 ) (2,688 ) 53,800 Depreciation, amortization and accretion 23 26 22 Loss on prepayment of debt - 754 - Stock-based compensation 4,496 4,403 4,304 Change in assets and liabilities: Other assets 14,305 515 2,529 Other liabilities (9,457 ) (396 ) (9,177 ) Net cash provided by operating activities 44,156 74,192 119,098 Investing activities: Payment for acquisition (11,209 ) (76,893 ) - Purchases of premises and equipment - (12 ) (44 ) Purchase of available for sale securities (1,125 ) - - Sales and paydowns of securities available for sale - 250 537 Net cash (used in) provided by investing activities (12,334 ) (76,655 ) 493 Financing activities: Repayment of long-term debt - (48,521 ) - Proceeds from issuance of long-term debt - 83,924 - Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans 366 303 469 Proceeds from issuance of common stock, net of offering costs - - 12,206 Repurchase of outstanding warrant - - (12,000 ) Retirement of preferred stock (9,992 ) - (121,613 ) Repurchase of common stock (13,659 ) - - Cash dividends on common stock (15,849 ) (14,822 ) (1,810 ) Cash dividends on Series B preferred stock - - (802 ) Cash dividends on Series D preferred stock - - (412 ) Cash dividends on Series H preferred stock (46 ) (50 ) - Net cash (used in) provided by financing activities (39,180 ) 20,834 (123,962 ) Net change in cash (7,358 ) 18,371 (4,371 ) Cash at beginning of year 50,338 31,967 36,338 Cash at end of year $ 42,980 $ 50,338 $ 31,967

Summary of Significant Accoun55

Summary of Significant Accounting Policies (Detail Textuals)	12 Months Ended
	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Accounting Policies [Line Items]
Threshold limit of revenue	10.00%
Number of operating segment | Segment	1
Minimum nonaccrual loan relationships	$ 500,000
Minimum accruing relationships rated substandard	$ 2,000,000
Depreciation method used	Straight-line method
Reclassification of loan from residential mortgage and home equity lines of credit categories to owner occupied and income producing commercial real estate		$ 275,000,000	$ 262,000,000
Reclassification of loan from residential construction to the commercial construction category		176,000,000	$ 169,000,000
Debt issuance costs reclassification between other assets		9,680,000
Debt issuance costs reclassification between brokered deposits		7,900,000
Debt issuance costs reclassification between long term debt		$ 1,780,000
Credit Concentration Risk
Accounting Policies [Line Items]
Concentration risk, percentage	76.00%
Buildings and improvements
Accounting Policies [Line Items]
Estimated useful lives	10 to 40 years
Land improvements
Accounting Policies [Line Items]
Estimated useful lives	10 years
Furniture and equipment
Accounting Policies [Line Items]
Estimated useful lives	3 to 10 years

Accounting Standards Updates (D

Accounting Standards Updates (Details Textuals) $ in Thousands	Dec. 31, 2016USD ($)
Accounting Standards Updates [Abstract]
Present value of future minimum lease payments	$ 29,090

Mergers and Acquisitions (Detai

Mergers and Acquisitions (Details) - USD ($) $ in Thousands		Jul. 01, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Accrued interest receivable			$ 28,018	$ 25,786
Liabilities
Total identifiable net assets			11,200	309,000
Consideration transferred
Goodwill			$ 142,025	$ 130,612	$ 1,509
Tidelands Bancshares, Inc | Tidelands Bank
Assets
Total assets acquired		$ 440,000
Liabilities
Total liabilities assumed		440,000
Consideration transferred
Cash paid to redeem common stock		2,220
Cash paid to redeem preferred stock issued under the Treasury's Capital Purchase Program		8,980
Goodwill		10,700
Tidelands Bancshares, Inc | As Recorded by Tidelands | Tidelands Bank
Assets
Cash and cash equivalents		13,121
Securities		65,676
Loans held for sale		139
Loans, net		317,938
Premises and equipment, net		19,133
Bank owned life insurance		16,917
Accrued interest receivable		1,086
Net deferred tax asset		73
Core deposit intangible
Other real estate owned		9,881
Other assets		1,920
Total assets acquired		445,884
Liabilities
Deposits		398,108
Repurchase agreements		10,000
Federal Home Loan Bank advances		13,000
Long-term debt		14,434
Other liabilities		11,587
Total liabilities assumed		447,129
Excess of assets acquired over liabilities assumed		(1,245)
Tidelands Bancshares, Inc | Fair Value Adjustments | Tidelands Bank
Assets
Cash and cash equivalents
Securities	[1]	(155)
Loans held for sale	[1]	3
Loans, net	[1]	(12,035)
Premises and equipment, net	[1]	(7,944)
Bank owned life insurance
Accrued interest receivable	[1]	(167)
Net deferred tax asset	[1]	15,639
Core deposit intangible	[1]	1,570
Other real estate owned	[1]	(2,386)
Other assets	[1]	(164)
Total assets acquired	[1]	(5,639)
Liabilities
Deposits	[1]	1,765
Repurchase agreements	[1]	155
Federal Home Loan Bank advances	[1]	354
Long-term debt	[1]	(3,668)
Other liabilities	[1]	(5,986)
Total liabilities assumed	[1]	(7,380)
Aggregate fair value adjustments	[1]	1,741
Tidelands Bancshares, Inc | As Recorded by United | Tidelands Bank
Assets
Cash and cash equivalents		13,121
Securities		65,521
Loans held for sale		142
Loans, net		305,903
Premises and equipment, net		11,189
Bank owned life insurance		16,917
Accrued interest receivable		919
Net deferred tax asset		15,712
Core deposit intangible		1,570
Other real estate owned		7,495
Other assets		1,756
Total assets acquired		440,245
Liabilities
Deposits		399,873
Repurchase agreements		10,155
Federal Home Loan Bank advances		13,354
Long-term debt		10,766
Other liabilities		5,601
Total liabilities assumed		439,749
Total identifiable net assets		496
Consideration transferred
Cash paid to redeem common stock		2,224
Cash paid to redeem preferred stock issued under the Treasury's Capital Purchase Program		8,985
Total fair value of consideration transferred		11,209
Goodwill		$ 10,713
[1]	Fair values are preliminary and are subject to refinement for a period not to exceed one year after the closing date of an acquisition as information relative to closing date fair values becomes available.

Mergers and Acquisitions (Det58

Mergers and Acquisitions (Details 1) - Tidelands Bancshares, Inc - Tidelands Bank $ in Thousands	Jul. 01, 2016USD ($)
Accounted for pursuant to ASC 310-30
Business Acquisition [Line Items]
Contractually required principal and interest	$ 50,660
Non-accretable difference	13,483
Cash flows expected to be collected	37,177
Accretable yield	2,113
Fair value	35,064
Excluded from ASC 310-30
Business Acquisition [Line Items]
Fair value	270,839
Gross contractual amounts receivable	302,331
Estimate of contractual cash flows not expected to be collected	$ 3,859

Mergers and Acquisitions (Det59

Mergers and Acquisitions (Details 2) - USD ($) $ in Thousands	Sep. 01, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Accrued interest receivable		$ 28,018	$ 25,786
Liabilities
Total identifiable net assets		11,200	309,000
Consideration transferred
Cash		(1,912)	(35,497)	$ 31,261
Goodwill		$ 142,025	$ 130,612	$ 1,509
Palmetto Bancshares, Inc. | Palmetto Bank
Assets
Total assets acquired	$ 1,150,000
Liabilities
Total liabilities assumed	1,020,000
Consideration transferred
Total fair value of consideration transferred	244,000
Palmetto Bancshares, Inc. | Palmetto Bank | As Recorded by Palmetto
Assets
Cash and cash equivalents	64,906
Securities	208,407
Loans held for sale	2,356
Loans, net	802,111
Premises and equipment, net	21,888
Bank owned life insurance	12,133
Accrued interest receivable	3,227
Net deferred tax asset	14,798
Core deposit intangible
Other assets	18,439
Total assets acquired	1,148,265
Liabilities
Deposits	989,296
Short-term borrowings	13,537
Other liabilities	11,994
Total liabilities assumed	1,014,827
Excess of assets acquired over liabilities assumed	133,438
Palmetto Bancshares, Inc. | Palmetto Bank | Fair Value Adjustments
Assets
Cash and cash equivalents
Securities	(340)
Loans held for sale	91
Loans, net	(5,552)
Premises and equipment, net	(4,931)
Bank owned life insurance	(148)
Accrued interest receivable	(346)
Net deferred tax asset	1,587
Core deposit intangible	12,900
Other assets	(4,731)
Total assets acquired	(1,470)
Liabilities
Deposits
Short-term borrowings
Other liabilities	2,808
Total liabilities assumed	2,808
Aggregate fair value adjustments	(4,278)
Palmetto Bancshares, Inc. | Palmetto Bank | As Recorded by United
Assets
Cash and cash equivalents	64,906
Securities	208,067
Loans held for sale	2,447
Loans, net	796,559
Premises and equipment, net	16,957
Bank owned life insurance	11,985
Accrued interest receivable	2,881
Net deferred tax asset	16,385
Core deposit intangible	12,900
Other assets	13,708
Total assets acquired	1,146,795
Liabilities
Deposits	989,296
Short-term borrowings	13,537
Other liabilities	14,802
Total liabilities assumed	1,017,635
Total identifiable net assets	129,160
Consideration transferred
Cash	74,003
Common stock issued (8,700,012 shares)	170,259
Total fair value of consideration transferred	244,262
Goodwill	$ 115,102

Mergers and Acquisitions (Paren

Mergers and Acquisitions (Parentheticals) (Details 2)	Sep. 01, 2015shares
Palmetto Bancshares, Inc.
Business Acquisition [Line Items]
Common stock issued	8,700,012

Mergers and Acquisitions (Det61

Mergers and Acquisitions (Details 3) - Palmetto Bancshares, Inc. - Palmetto Bank $ in Thousands	Sep. 01, 2015USD ($)
Accounted for pursuant to ASC 310-30
Business Acquisition [Line Items]
Contractually required principal and interest	$ 63,623
Non-accretable difference	13,397
Cash flows expected to be collected	50,226
Accretable yield	4,306
Fair value	45,920
Excluded from ASC 310-30
Business Acquisition [Line Items]
Fair value	750,639
Gross contractual amounts receivable	859,628
Estimate of contractual cash flows not expected to be collected	$ 7,733

Mergers and Acquisitions (Det62

Mergers and Acquisitions (Details 4) - USD ($) $ in Thousands	May 01, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Liabilities
Total identifiable net assets		$ 11,200	$ 309,000
Consideration transferred
Cash		(1,912)	(35,497)	$ 31,261
Goodwill		$ 142,025	$ 130,612	$ 1,509
Money Tree Corporation | FNB
Assets
Total assets acquired	$ 459,394
Liabilities
Total liabilities assumed	409,512
Consideration transferred
Total fair value of consideration transferred	54,591
Goodwill	14,701
Money Tree Corporation | FNB | As Recorded by MoneyTree
Assets
Cash and cash equivalents	55,293
Securities	127,123
Loans held for sale	1,342
Loans, net	246,816
Premises and equipment, net	9,497
Bank owned life insurance	11,194
Core deposit intangible
Other assets	5,462
Total assets acquired	456,727
Liabilities
Deposits	368,833
Short-term borrowings	15,000
Federal Home Loan Bank advances	22,000
Other liabilities	864
Total liabilities assumed	406,697
SBLF preferred stock assumed	9,992
Excess of assets acquired over liabilities assumed	40,038
Money Tree Corporation | FNB | Fair Value Adjustments
Assets
Cash and cash equivalents
Securities	(52)
Loans held for sale
Loans, net	(2,464)
Premises and equipment, net	1,362
Bank owned life insurance
Core deposit intangible	4,220
Other assets	(399)
Total assets acquired	2,667
Liabilities
Deposits	917
Short-term borrowings
Federal Home Loan Bank advances	70
Other liabilities	1,828
Total liabilities assumed	2,815
Aggregate fair value adjustments	(148)
Money Tree Corporation | FNB | As Recorded by United
Assets
Cash and cash equivalents	55,293
Securities	127,071
Loans held for sale	1,342
Loans, net	244,352
Premises and equipment, net	10,859
Bank owned life insurance	11,194
Core deposit intangible	4,220
Other assets	5,063
Total assets acquired	459,394
Liabilities
Deposits	369,750
Short-term borrowings	15,000
Federal Home Loan Bank advances	22,070
Other liabilities	2,692
Total liabilities assumed	409,512
SBLF preferred stock assumed	9,992
Total identifiable net assets	39,890
Consideration transferred
Cash	10,699
Common stock issued (2,358,503 shares)	43,892
Total fair value of consideration transferred	54,591
Goodwill	$ 14,701

Mergers and Acquisitions (Par63

Mergers and Acquisitions (Parentheticals) (Details 4)	May 01, 2015shares
Money Tree Corporation
Business Acquisition [Line Items]
Common stock issued	2,358,503

Mergers and Acquisitions (Det64

Mergers and Acquisitions (Details 5) - Money Tree Corporation - FNB $ in Thousands	May 01, 2015USD ($)
Accounted for pursuant to ASC 310-30
Business Acquisition [Line Items]
Contractually required principal and interest	$ 15,152
Non-accretable difference	3,677
Cash flows expected to be collected	11,475
Accretable yield	1,029
Fair value	10,446
Excluded from ASC 310-30
Business Acquisition [Line Items]
Fair value	233,906
Gross contractual amounts receivable	258,931
Estimate of contractual cash flows not expected to be collected	$ 1,231

Mergers and Acquisitions (Det65

Mergers and Acquisitions (Details 6) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Supplemental consolidated pro forma Revenue		$ 382,921	$ 342,211
Supplemental consolidated pro forma Net Income		82,465	$ 72,438
Money Tree Corporation | FNB
Business Acquisition [Line Items]
Actual Revenue		8,373
Actual Net income		3,806
Palmetto Bancshares, Inc. | Palmetto Bank
Business Acquisition [Line Items]
Actual Revenue		17,887
Actual Net income		$ 7,010
Tidelands Bancshares, Inc | Tidelands Bank
Business Acquisition [Line Items]
Actual Revenue	$ 7,512
Actual Net income	1,189
Supplemental consolidated pro forma Revenue	411,088
Supplemental consolidated pro forma Net Income	$ 100,184

Mergers and Acquisitions (Det66

Mergers and Acquisitions (Detail Textuals)	Jul. 01, 2016USD ($)Branch$ / shares	Sep. 01, 2015USD ($)Branchshares	May 01, 2015USD ($)Branch$ / sharesshares	Dec. 31, 2015USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Business Acquisition [Line Items]
Goodwill				$ 130,612,000	$ 142,025,000	$ 130,612,000	$ 1,509,000
Increase in goodwill					700,000
Merger related costs excluded from pro forma information					8,122,000	17,995,000
Money Tree Corporation
Business Acquisition [Line Items]
Common stock issued | shares			2,358,503
Money Tree Corporation | FNB
Business Acquisition [Line Items]
Number of branches | Branch			10
Assets acquired			$ 459,394,000
Liabilities assumed			409,512,000
Preferred stock assumed			9,990,000
Total consideration transferred			54,591,000
Goodwill			$ 14,701,000
Common stock issued | shares			2,360,000
Increase in goodwill			$ 1,680,000
Number preferred stock shares outstanding | shares			9,992
Liquidation preference amount | $ / shares			$ 1,000
Decrease in provisional values assigned to premises and equipment			$ 2,400,000
Money Tree Corporation | FNB | Core deposit intangible
Business Acquisition [Line Items]
Intangible assets acquired			$ 4,220,000
Expected useful life of asset			6 years 8 months 1 day
Money Tree Corporation | FNB | Deposit premium
Business Acquisition [Line Items]
Intangible assets acquired			$ 917,000
Weighted average maturity of underlying deposits			5 years
Palmetto Bancshares, Inc.
Business Acquisition [Line Items]
Common stock issued | shares		8,700,012
Palmetto Bancshares, Inc. | Palmetto Bank
Business Acquisition [Line Items]
Number of branches | Branch		25
Assets acquired		$ 1,150,000,000
Liabilities assumed		1,020,000,000
Total consideration transferred		244,000,000
Increase in goodwill		115,000,000		7,180,000
Increase in provisional values assigned to acquired loans				535,000
Decrease in provisional values assigned to premises and equipment				6,180,000
Decrease in provisional values assigned to other real estate owned				2,060,000
Decrease in provisional values assigned to other assets				3,750,000
Increase to the deferred tax asset				$ 3,910,000
Palmetto Bancshares, Inc. | Palmetto Bank | Core deposit intangible
Business Acquisition [Line Items]
Intangible assets acquired		$ 12,900,000
Expected useful life of asset		12 years
Tidelands Bancshares, Inc | Tidelands Bank
Business Acquisition [Line Items]
Number of branches | Branch	7
Assets acquired	$ 440,000,000
Liabilities assumed	$ 440,000,000
Cash per common share | $ / shares	$ 0.52
Cash paid to redeem common stock	$ 2,220,000
Unpaid dividends	8,980,000
Goodwill	10,700,000
Merger related costs excluded from pro forma information					$ 4,070,000
Tidelands Bancshares, Inc | Tidelands Bank | Core deposit intangible
Business Acquisition [Line Items]
Intangible assets acquired	$ 1,570,000
Expected useful life of asset	5 years
Palmetto and Moneytree
Business Acquisition [Line Items]
Merger related costs excluded from pro forma information						$ 12,000,000

Mergers and Acquisitions (Det67

Mergers and Acquisitions (Detail Textuals 1) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 26, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Payment for acquisition		$ (1,912,000)	$ (35,497,000)	$ 31,261,000
Goodwill		$ 142,025,000	$ 130,612,000	$ 1,509,000
Business Carolina, Inc.
Business Acquisition [Line Items]
Payment for acquisition	$ 31,300,000
Loan fair value	24,800,000
Accrued interest	83,000
Servicing rights fair value	2,130,000
Premises and equipment	2,600,000
Goodwill	1,510,000
Gross contractual amount of loans receivable	$ 28,000,000

Cash Flows (Detail Textuals)

Cash Flows (Detail Textuals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flow [Line Items]
Transferred to foreclosed property	$ 8,180	$ 4,930	$ 9,090
Unsettled sales of government guaranteed loans	29,900	18,500
Unsettled purchases of government guaranteed loans		18,300
Unsettled securities purchases			5,430
Assets with fair value	451,000	1,740,000	$ 31,300
Liabilities with fair value	440,000	1,430,000
Net assets acquired	$ 11,200	309,000
Common Stock
Cash Flow [Line Items]
Stock issued pursuant to business combinations		214,000
Preferred Stock
Cash Flow [Line Items]
Stock issued pursuant to business combinations		$ 9,990

Balance Sheet Offsetting and 69

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Repurchase and reverse repurchase agreements, gross amounts of recognized assets	$ 150,000	$ 400,000
Repurchase and reverse repurchase agreements, gross amounts offset on balance sheet assets	(150,000)	(400,000)
Repurchase and reverse repurchase agreements, net assets balance
Repurchase and reverse repurchase agreements, gross amounts not off set in balance sheet assets of financial instruments
Repurchase and reverse repurchase agreements, gross amounts not off set in balance sheet assets of collateral received
Repurchase and reverse repurchase agreements, net assets
Derivative, gross amounts of recognized assets	23,688	20,082
Derivative, gross amounts offset on balance sheet
Derivatives, net asset balance	23,688	20,082
Derivative, gross amounts not off set in balance sheet assets of financial instruments	(3,485)	(519)
Derivative, gross amounts not off set in balance sheet assets of collateral received	(3,366)	(3,729)
Derivative asset, net amount	16,837	15,834
Offsetting assets, gross amounts of recognized assets	173,688	420,082
Offsetting assets, gross amounts offset on balance sheet	(150,000)	(400,000)
Offsetting assets, net asset balance	23,688	20,082
Offsetting assets, gross amounts not offset in balance sheet of financial instruments	(3,485)	(519)
Offsetting assets, gross amounts not offset in the balance sheet of collateral received	(3,366)	(3,729)
Offsetting assets, net amount	$ 16,837	$ 15,834
Weighted average interest rate of reverse repurchase agreements assets	1.78%	1.34%
Repurchase and reverse repurchase agreements, gross amounts of recognized liabilities	$ 150,000	$ 400,000
Repurchase and reverse repurchase agreements, gross amounts offset on balance sheet liabilities	(150,000)	(400,000)
Repurchase and reverse repurchase agreements, net liabilities balance
Repurchase and reverse repurchase agreements, gross amounts not off set in balance sheet liabilities of financial instruments
Repurchase and reverse repurchase agreements, gross amounts not off set in balance sheet liabilities of collateral pledged
Repurchase and reverse repurchase agreements, net liabilities
Derivative liability, gross amounts of recognized liabilities	27,648	28,825
Derivative liability, gross amounts offset on balance sheet liabilities
Derivative liability, net liabilities balance	27,648	28,825
Derivative liability, gross amounts not off set in balance sheet liabilities of financial instruments	(3,485)	(519)
Derivative liability, gross amounts not off set in balance sheet liabilities of collateral pledged	(18,505)	(30,917)
Derivative liabilities, net amount	5,658
Offsetting liabilities, gross amounts of recognized liabilities	177,648	428,825
Offsetting liabilities, gross amounts offset on balance sheet	(150,000)	(400,000)
Offsetting liabilities, net liabilities balance	27,648	28,825
Offsetting liabilities gross, amounts not offset in balance sheet of financial instruments	(3,485)	(519)
Offsetting liabilities gross amounts not offset in the balance sheet of collateral pledged	(18,505)	(30,917)
Offsetting liabilities, net amount	$ 5,658
Weighted average interest rate of reverse repurchase agreements liabilities	0.88%	0.50%

Balance Sheet Offsetting and 70

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 150,000	$ 416,640
Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure	150,000	400,000
Amounts related to agreements not included in offsetting disclosure		16,640
U.S. Treasuries
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		100,000
U.S. Government agencies
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		32
Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	150,000	316,608
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		16,640
Overnight and Continuous | U.S. Treasuries
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
Overnight and Continuous | U.S. Government agencies
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		32
Overnight and Continuous | Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		16,608
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		25,000
Up to 30 Days | U.S. Treasuries
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
Up to 30 Days | U.S. Government agencies
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
Up to 30 Days | Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		25,000
30 to 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	50,000	275,000
30 to 90 Days | U.S. Treasuries
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements		100,000
30 to 90 Days | U.S. Government agencies
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
30 to 90 Days | Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	50,000	175,000
91 to 110 days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	100,000	100,000
91 to 110 days | U.S. Treasuries
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
91 to 110 days | U.S. Government agencies
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements
91 to 110 days | Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 100,000	$ 100,000

Balance Sheet Offsetting and 71

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings (Details Textuals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Offsetting [Abstract]
Right to reclaim cash collateral	$ 18,500	$ 6,260
Obligation to return cash collateral	$ 3,370	$ 3,730

Investment Securities (Details)

Investment Securities (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Held-to-maturity securities:
Amortized Cost		$ 329,843	$ 364,696
Gross Unrealized Gains		6,232	8,635
Gross Unrealized Losses		2,905	1,673
Fair value		333,170	371,658
State and political subdivisions
Held-to-maturity securities:
Amortized Cost		57,134	62,073
Gross Unrealized Gains		2,197	3,211
Gross Unrealized Losses		249
Fair value		59,082	65,284
Mortgage-backed securities
Held-to-maturity securities:
Amortized Cost	[1]	272,709	302,623
Gross Unrealized Gains	[1]	4,035	5,424
Gross Unrealized Losses	[1]	2,656	1,673
Fair value	[1]	$ 274,088	$ 306,374
[1]	All are residential type mortgage-backed securities or U.S. government agency commercial mortgage backed securities.

Investment Securities (Details

Investment Securities (Details 1) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Investment securities available-for-sale:
Amortized Cost		$ 2,440,151	$ 2,294,491
Gross Unrealized Gains		12,515	14,581
Gross Unrealized Losses		20,228	17,561
Fair Value		2,432,438	2,291,511
U.S. Treasuries
Investment securities available-for-sale:
Amortized Cost		170,360	169,034
Gross Unrealized Gains		20	156
Gross Unrealized Losses		764	484
Fair Value		169,616	168,706
U.S. Government agencies
Investment securities available-for-sale:
Amortized Cost		21,053	112,394
Gross Unrealized Gains		6	385
Gross Unrealized Losses		239	439
Fair Value		20,820	112,340
State and political subdivisions
Investment securities available-for-sale:
Amortized Cost		74,555	56,265
Gross Unrealized Gains		176	461
Gross Unrealized Losses		554	458
Fair Value		74,177	56,268
Mortgage-backed securities
Investment securities available-for-sale:
Amortized Cost	[1]	1,397,435	1,108,206
Gross Unrealized Gains	[1]	8,924	12,077
Gross Unrealized Losses	[1]	14,677	7,165
Fair Value	[1]	1,391,682	1,113,118
Corporate bonds
Investment securities available-for-sale:
Amortized Cost		306,824	308,102
Gross Unrealized Gains		591	933
Gross Unrealized Losses		2,023	3,009
Fair Value		305,392	306,026
Asset-backed securities
Investment securities available-for-sale:
Amortized Cost		468,742	538,679
Gross Unrealized Gains		2,798	569
Gross Unrealized Losses		1,971	6,006
Fair Value		469,569	533,242
Other
Investment securities available-for-sale:
Amortized Cost		1,182	1,811
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value		$ 1,182	$ 1,811
[1]	All are residential type mortgage-backed securities or U.S. government agency commercial mortgage backed securities.

Investment Securities (Detail74

Investment Securities (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment Securities [Abstract]
Proceeds from sales	$ 199,864	$ 353,860	$ 419,201
Gross gains on sales	1,647	2,409	6,003
Gross losses on sales	(665)	(154)	(1,132)
Net gains on sales of securities	982	2,255	4,871
Income tax expense attributable to sales	$ 371	$ 862	$ 1,902

Investment Securities (Detail75

Investment Securities (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	$ 136,523	$ 140,362
Unrealized Loss, Less than 12 Months	2,905	1,331
Fair Value, 12 Months or More		13,127
Unrealized Loss, 12 Months or More		342
Fair Value, Total	136,523	153,489
Unrealized Loss, Total	2,905	1,673
State and political subdivisions
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	18,359
Unrealized Loss, Less than 12 Months	249
Fair Value, 12 Months or More
Unrealized Loss, 12 Months or More
Fair Value, Total	18,359
Unrealized Loss, Total	249
Mortgage-backed securities
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	118,164	140,362
Unrealized Loss, Less than 12 Months	2,656	1,331
Fair Value, 12 Months or More		13,127
Unrealized Loss, 12 Months or More		342
Fair Value, Total	118,164	153,489
Unrealized Loss, Total	$ 2,656	$ 1,673

Investment Securities (Detail76

Investment Securities (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	$ 1,320,363	$ 1,081,551
Unrealized Loss, Less than 12 Months	17,646	12,466
Fair Value, 12 Months or More	157,191	178,820
Unrealized Loss, 12 Months or More	2,582	5,095
Fair Value, Total	1,477,554	1,260,371
Unrealized Loss, Total	20,228	17,561
U.S. Treasuries
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	145,229	126,066
Unrealized Loss, Less than 12 Months	764	484
Fair Value, 12 Months or More
Unrealized Loss, 12 Months or More
Fair Value, Total	145,229	126,066
Unrealized Loss, Total	764	484
U.S. Government agencies
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	19,685	74,189
Unrealized Loss, Less than 12 Months	239	439
Fair Value, 12 Months or More
Unrealized Loss, 12 Months or More
Fair Value, Total	19,685	74,189
Unrealized Loss, Total	239	439
State and political subdivisions
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	61,782	27,014
Unrealized Loss, Less than 12 Months	554	458
Fair Value, 12 Months or More
Unrealized Loss, 12 Months or More
Fair Value, Total	61,782	27,014
Unrealized Loss, Total	554	458
Mortgage-backed securities
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	810,686	274,005
Unrealized Loss, Less than 12 Months	13,952	2,580
Fair Value, 12 Months or More	26,279	173,254
Unrealized Loss, 12 Months or More	725	4,585
Fair Value, Total	836,965	447,259
Unrealized Loss, Total	14,677	7,165
Corporate bonds
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	228,504	221,337
Unrealized Loss, Less than 12 Months	1,597	2,759
Fair Value, 12 Months or More	15,574	750
Unrealized Loss, 12 Months or More	426	250
Fair Value, Total	244,078	222,087
Unrealized Loss, Total	2,023	3,009
Asset-backed securities
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	54,477	358,940
Unrealized Loss, Less than 12 Months	540	5,746
Fair Value, 12 Months or More	115,338	4,816
Unrealized Loss, 12 Months or More	1,431	260
Fair Value, Total	169,815	363,756
Unrealized Loss, Total	$ 1,971	$ 6,006

Investment Securities (Detail77

Investment Securities (Details 5) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Debt Maturities [Abstract]
Amortized Cost		$ 2,440,151	$ 2,294,491
Available-for-Sale, Fair Value		2,432,438	2,291,511
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost		329,843	364,696
Held-To-Maturity, Fair value		333,170	371,658
U.S. Treasuries
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, 1 to 5 years		116,093
Available-for-Sale, Fair Value, 1 to 5 years		115,702
Available-for-Sale, Amortized Cost, 5 to 10 years		54,267
Available-for-Sale, Fair Value, 5 to 10 years		53,914
Amortized Cost		170,360	169,034
Available-for-Sale, Fair Value		169,616	168,706
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, 1 to 5 years
Held-to-Maturity, Fair Value, 1 to 5 years
Held-to-Maturity, Amortized Cost, 5 to 10 years
Held-to-Maturity, Fair Value, 5 to 10 years
Held-to-Maturity, Amortized Cost
Held-To-Maturity, Fair value
U.S. Government agencies
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, 1 to 5 years		2,119
Available-for-Sale, Fair Value, 1 to 5 years		2,123
Available-for-Sale, Amortized Cost, 5 to 10 years		17,904
Available-for-Sale, Fair Value, 5 to 10 years		17,716
Available-for-Sale, Amortized Cost, More than 10 years		1,030
Available-for-Sale, Fair Value, More than 10 years		981
Amortized Cost		21,053	112,394
Available-for-Sale, Fair Value		20,820	112,340
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, Within 1 year
Held-to-Maturity, Fair Value, Within 1 year
Held-to-Maturity, Amortized Cost, 1 to 5 years
Held-to-Maturity, Fair Value, 1 to 5 years
Held-to-Maturity, Amortized Cost, 5 to 10 years
Held-to-Maturity, Fair Value, 5 to 10 years
Held-to-Maturity, Amortized Cost, More than 10 years
Held-to-Maturity, Fair Value, More than 10 years
Held-to-Maturity, Amortized Cost
Held-To-Maturity, Fair value
State and political subdivisions
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, Within 1 year		1,053
Available-for-Sale, Fair Value, Within 1 year		1,059
Available-for-Sale, Amortized Cost, 1 to 5 years		31,941
Available-for-Sale, Fair Value, 1 to 5 years		31,930
Available-for-Sale, Amortized Cost, 5 to 10 years		23,653
Available-for-Sale, Fair Value, 5 to 10 years		23,403
Available-for-Sale, Amortized Cost, More than 10 years		17,908
Available-for-Sale, Fair Value, More than 10 years		17,785
Amortized Cost		74,555	56,265
Available-for-Sale, Fair Value		74,177	56,268
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, Within 1 year		4,506
Held-to-Maturity, Fair Value, Within 1 year		4,553
Held-to-Maturity, Amortized Cost, 1 to 5 years		13,850
Held-to-Maturity, Fair Value, 1 to 5 years		14,514
Held-to-Maturity, Amortized Cost, 5 to 10 years		21,192
Held-to-Maturity, Fair Value, 5 to 10 years		22,676
Held-to-Maturity, Amortized Cost, More than 10 years		17,586
Held-to-Maturity, Fair Value, More than 10 years		17,339
Held-to-Maturity, Amortized Cost		57,134	62,073
Held-To-Maturity, Fair value		59,082	65,284
Corporate bonds
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, 1 to 5 years		233,481
Available-for-Sale, Fair Value, 1 to 5 years		233,597
Available-for-Sale, Amortized Cost, 5 to 10 years		72,343
Available-for-Sale, Fair Value, 5 to 10 years		71,120
Available-for-Sale, Amortized Cost, More than 10 years		1,000
Available-for-Sale, Fair Value, More than 10 years		675
Amortized Cost		306,824	308,102
Available-for-Sale, Fair Value		305,392	306,026
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, 1 to 5 years
Held-to-Maturity, Fair Value, 1 to 5 years
Held-to-Maturity, Amortized Cost, 5 to 10 years
Held-to-Maturity, Fair Value, 5 to 10 years
Held-to-Maturity, Amortized Cost, More than 10 years
Held-to-Maturity, Fair Value, More than 10 years
Held-to-Maturity, Amortized Cost
Held-To-Maturity, Fair value
Asset-backed securities
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, 1 to 5 years		16,395
Available-for-Sale, Fair Value, 1 to 5 years		16,598
Available-for-Sale, Amortized Cost, 5 to 10 years		334,071
Available-for-Sale, Fair Value, 5 to 10 years		335,031
Available-for-Sale, Amortized Cost, More than 10 years		118,276
Available-for-Sale, Fair Value, More than 10 years		117,940
Amortized Cost		468,742	538,679
Available-for-Sale, Fair Value		469,569	533,242
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, 1 to 5 years
Held-to-Maturity, Fair Value, 1 to 5 years
Held-to-Maturity, Amortized Cost, 5 to 10 years
Held-to-Maturity, Fair Value, 5 to 10 years
Held-to-Maturity, Amortized Cost, More than 10 years
Held-to-Maturity, Fair Value, More than 10 years
Held-to-Maturity, Amortized Cost
Held-To-Maturity, Fair value
Other
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, More than 10 years		1,182
Available-for-Sale, Fair Value, More than 10 years		1,182
Amortized Cost		1,182	1,811
Available-for-Sale, Fair Value		1,182	1,811
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, More than 10 years
Held-to-Maturity, Fair Value, More than 10 years
Held-to-Maturity, Amortized Cost
Held-To-Maturity, Fair value
Total securities other than mortgage-backed securities
Available-for-sale Securities, Debt Maturities [Abstract]
Available-for-Sale, Amortized Cost, Within 1 year		1,053
Available-for-Sale, Fair Value, Within 1 year		1,059
Available-for-Sale, Amortized Cost, 1 to 5 years		400,029
Available-for-Sale, Fair Value, 1 to 5 years		399,950
Available-for-Sale, Amortized Cost, 5 to 10 years		502,238
Available-for-Sale, Fair Value, 5 to 10 years		501,184
Available-for-Sale, Amortized Cost, More than 10 years		139,396
Available-for-Sale, Fair Value, More than 10 years		138,563
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost, Within 1 year		4,506
Held-to-Maturity, Fair Value, Within 1 year		4,553
Held-to-Maturity, Amortized Cost, 1 to 5 years		13,850
Held-to-Maturity, Fair Value, 1 to 5 years		14,514
Held-to-Maturity, Amortized Cost, 5 to 10 years		21,192
Held-to-Maturity, Fair Value, 5 to 10 years		22,676
Held-to-Maturity, Amortized Cost, More than 10 years		17,586
Held-to-Maturity, Fair Value, More than 10 years		17,339
Mortgage-backed securities
Available-for-sale Securities, Debt Maturities [Abstract]
Amortized Cost	[1]	1,397,435	1,108,206
Available-for-Sale, Fair Value	[1]	1,391,682	1,113,118
Held-to-maturity Securities, Debt Maturities [Abstract]
Held-to-Maturity, Amortized Cost	[1]	272,709	302,623
Held-To-Maturity, Fair value	[1]	$ 274,088	$ 306,374
[1]	All are residential type mortgage-backed securities or U.S. government agency commercial mortgage backed securities.

Investment Securities (Detail T

Investment Securities (Detail Textuals) $ in Millions	Dec. 31, 2016USD ($)SecuritiesSecurity	Dec. 31, 2015USD ($)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Carrying value of secure public deposits, FHLB advances and other secured borrowings | $	$ 1,450	$ 1,630
Number of available for sale securities in unrealized loss position | Security	170
Number of held-to-maturity securities in unrealized loss position | Securities	41
U.S. Government agencies
Schedule of Trading Securities and Other Trading Assets [Line Items]
Percentage of shareholders equity	10.00%	10.00%

Loans and Allowance for Credi79

Loans and Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Classifications of loans
Total loans	$ 6,920,636	$ 5,995,441
Less allowance for loan losses	(61,422)	(68,448)
Loans, net	6,859,214	5,926,993
Loans Receivable
Classifications of loans
Total loans	6,920,636	5,995,441
Less allowance for loan losses	(61,422)	(68,448)
Loans, net	6,859,214	5,926,993
Loans Receivable | Home equity lines of credit
Classifications of loans
Total loans	655,410	589,325
Loans Receivable | Indirect auto
Classifications of loans
Total loans	459,354	455,971
Loans Receivable | Commercial
Classifications of loans
Total loans	4,635,537	3,894,657
Loans Receivable | Commercial | Owner occupied commercial real estate
Classifications of loans
Total loans	1,650,360	1,570,988
Loans Receivable | Commercial | Income producing commercial real estate
Classifications of loans
Total loans	1,281,541	1,020,464
Loans Receivable | Commercial | Construction
Classifications of loans
Total loans	633,921	518,335
Loans Receivable | Commercial | Commercial & industrial
Classifications of loans
Total loans	1,069,715	784,870
Loans Receivable | Residential | Residential mortgage
Classifications of loans
Total loans	856,725	764,175
Loans Receivable | Residential | Construction
Classifications of loans
Total loans	190,043	176,202
Loans Receivable | Consumer installment
Classifications of loans
Total loans	$ 123,567	$ 115,111

Loans and Allowance for Credi80

Loans and Allowance for Credit Losses (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 4,279
Additions due to acquisitions	2,113	5,335
Accretion	(4,223)	(1,056)
Reclassification from nonaccretable difference	3,321
Changes in expected cash flows that do not affect nonaccretable difference	2,491
Balance at end of period	$ 7,981	$ 4,279

Loans and Allowance for Credi81

Loans and Allowance for Credit Losses (Details 2) - Loans Receivable - Executive Officers and Directors - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of loans outstanding to executive officers and directors of the holding company
Balance at beginning of period	$ 2,732	$ 3,204
New loans and advances	1	40
Repayments	(301)	(512)
Balance at end of period	$ 2,432	$ 2,732

Loans and Allowance for Credi82

Loans and Allowance for Credit Losses (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 70,990	$ 73,549	$ 78,927
Charge-Offs	(12,361)	(13,415)	(22,667)
Recoveries	5,595	7,156	8,789
Allocation of Unallocated
Provision	(800)	3,700	8,500
Ending Balance	63,424	70,990	73,549
Loans Receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	68,448	71,619	76,762
Charge-Offs	(12,361)	(13,415)	(22,667)
Recoveries	5,595	7,156	8,789
Allocation of Unallocated
Provision	(260)	3,088	8,735
Ending Balance	61,422	68,448	71,619
Loans Receivable | Home equity lines of credit
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	5,956	4,476	5,398
Charge-Offs	(1,690)	(1,094)	(2,314)
Recoveries	386	242	287
Allocation of Unallocated			391
Provision	(53)	2,332	714
Ending Balance	4,599	5,956	4,476
Loans Receivable | Indirect auto
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,393	1,061	1,126
Charge-Offs	(1,399)	(772)	(540)
Recoveries	233	86	54
Allocation of Unallocated
Provision	1,575	1,018	421
Ending Balance	1,802	1,393	1,061
Loans Receivable | Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance			6,243
Charge-Offs
Recoveries
Allocation of Unallocated			(6,243)
Provision
Ending Balance
Loans Receivable | Commercial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	18,016	18,174	18,823
Charge-Offs	(2,029)	(2,901)	(4,567)
Recoveries	706	755	3,343
Allocation of Unallocated			1,278
Provision	(247)	1,988	(703)
Ending Balance	16,446	18,016	18,174
Loans Receivable | Commercial | Income producing commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	11,548	14,517	10,607
Charge-Offs	(1,433)	(1,280)	(2,671)
Recoveries	580	866	1,009
Allocation of Unallocated			688
Provision	(1,852)	(2,555)	4,884
Ending Balance	8,843	11,548	14,517
Loans Receivable | Commercial | Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	9,553	10,901	10,702
Charge-Offs	(837)	(1,947)	(1,574)
Recoveries	821	736	503
Allocation of Unallocated			388
Provision	3,868	(137)	882
Ending Balance	13,405	9,553	10,901
Loans Receivable | Commercial | Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	4,433	3,252	6,504
Charge-Offs	(1,830)	(1,358)	(2,145)
Recoveries	1,689	2,174	1,665
Allocation of Unallocated			318
Provision	(482)	365	(3,090)
Ending Balance	3,810	4,433	3,252
Loans Receivable | Residential | Residential mortgage
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	12,719	14,133	10,787
Charge-Offs	(1,151)	(1,615)	(5,011)
Recoveries	301	1,080	572
Allocation of Unallocated			1,452
Provision	(3,324)	(879)	6,333
Ending Balance	8,545	12,719	14,133
Loans Receivable | Residential | Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	4,002	4,374	5,219
Charge-Offs	(533)	(851)	(1,837)
Recoveries	79	173	135
Allocation of Unallocated			1,728
Provision	(284)	306	(871)
Ending Balance	3,264	4,002	4,374
Loans Receivable | Consumer installment
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	828	731	1,353
Charge-Offs	(1,459)	(1,597)	(2,008)
Recoveries	800	1,044	1,221
Allocation of Unallocated
Provision	539	650	165
Ending Balance	708	828	731
Loans Receivable | Allowance for unfunded commitments
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	2,542	1,930	2,165
Charge-Offs
Recoveries
Allocation of Unallocated
Provision	(540)	612	(235)
Ending Balance	$ 2,002	$ 2,542	$ 1,930

Loans and Allowance for Credi83

Loans and Allowance for Credit Losses (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	$ 3,452	$ 6,797
Allowance for Loan Losses,Collectively evaluated for impairment	59,881	64,193
Allowance for Loan Losses, PCI	91
Allowance for Loan Losses, Ending balance	63,424	70,990	$ 73,549	$ 78,927
Loans Outstanding, Ending Balance	6,920,636	5,995,441
Loans Receivable
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	3,452	6,797
Allowance for Loan Losses,Collectively evaluated for impairment	57,879	61,651
Allowance for Loan Losses, PCI	91
Allowance for Loan Losses, Ending balance	61,422	68,448	71,619	76,762
Loans Outstanding, Individually evaluated for impairment	85,663	104,008
Loans Outstanding, Collectively evaluated for impairment	6,772,209	5,840,114
PCI	62,764	51,319
Loans Outstanding, Ending Balance	6,920,636	5,995,441
Loans Receivable | Home equity lines of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	2	6
Allowance for Loan Losses,Collectively evaluated for impairment	4,597	5,950
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	4,599	5,956	4,476	5,398
Loans Outstanding, Individually evaluated for impairment	63	167
Loans Outstanding, Collectively evaluated for impairment	653,337	587,470
PCI	2,010	1,688
Loans Outstanding, Ending Balance	655,410	589,325
Loans Receivable | Indirect auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment
Allowance for Loan Losses,Collectively evaluated for impairment	1,802	1,393
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	1,802	1,393	1,061	1,126
Loans Outstanding, Individually evaluated for impairment	1,165	749
Loans Outstanding, Collectively evaluated for impairment	458,189	455,173
PCI		49
Loans Outstanding, Ending Balance	459,354	455,971
Loans Receivable | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
PCI	53,267	46,274
Loans Outstanding, Ending Balance	4,635,537	3,894,657
Loans Receivable | Commercial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	1,746	1,788
Allowance for Loan Losses,Collectively evaluated for impairment	14,700	16,228
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	16,446	18,016	18,174	18,823
Loans Outstanding, Individually evaluated for impairment	31,421	40,634
Loans Outstanding, Collectively evaluated for impairment	1,600,355	1,516,532
PCI	18,584	13,822
Loans Outstanding, Ending Balance	1,650,360	1,570,988
Loans Receivable | Commercial | Income producing commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	885	1,705
Allowance for Loan Losses,Collectively evaluated for impairment	7,919	9,843
Allowance for Loan Losses, PCI	39
Allowance for Loan Losses, Ending balance	8,843	11,548	14,517	10,607
Loans Outstanding, Individually evaluated for impairment	30,459	26,443
Loans Outstanding, Collectively evaluated for impairment	1,225,763	964,563
PCI	25,319	29,458
Loans Outstanding, Ending Balance	1,281,541	1,020,464
Loans Receivable | Commercial | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	168	138
Allowance for Loan Losses,Collectively evaluated for impairment	13,218	9,415
Allowance for Loan Losses, PCI	19
Allowance for Loan Losses, Ending balance	13,405	9,553	10,901	10,702
Loans Outstanding, Individually evaluated for impairment	5,050	17,158
Loans Outstanding, Collectively evaluated for impairment	620,543	498,838
PCI	8,328	2,339
Loans Outstanding, Ending Balance	633,921	518,335
Loans Receivable | Commercial | Commercial & industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	58	274
Allowance for Loan Losses,Collectively evaluated for impairment	3,752	4,159
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	3,810	4,433	3,252	6,504
Loans Outstanding, Individually evaluated for impairment	1,915	3,278
Loans Outstanding, Collectively evaluated for impairment	1,066,764	780,937
PCI	1,036	655
Loans Outstanding, Ending Balance	1,069,715	784,870
Loans Receivable | Residential | Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	517	2,818
Allowance for Loan Losses,Collectively evaluated for impairment	7,997	9,901
Allowance for Loan Losses, PCI	31
Allowance for Loan Losses, Ending balance	8,545	12,719	14,133	10,787
Loans Outstanding, Individually evaluated for impairment	13,706	13,831
Loans Outstanding, Collectively evaluated for impairment	836,624	748,003
PCI	6,395	2,341
Loans Outstanding, Ending Balance	856,725	764,175
Loans Receivable | Residential | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	64	55
Allowance for Loan Losses,Collectively evaluated for impairment	3,198	3,947
Allowance for Loan Losses, PCI	2
Allowance for Loan Losses, Ending balance	3,264	4,002	4,374	5,219
Loans Outstanding, Individually evaluated for impairment	1,594	1,419
Loans Outstanding, Collectively evaluated for impairment	187,516	173,857
PCI	933	926
Loans Outstanding, Ending Balance	190,043	176,202
Loans Receivable | Consumer installment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment	12	13
Allowance for Loan Losses,Collectively evaluated for impairment	696	815
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	708	828	731	1,353
Loans Outstanding, Individually evaluated for impairment	290	329
Loans Outstanding, Collectively evaluated for impairment	123,118	114,741
PCI	159	41
Loans Outstanding, Ending Balance	123,567	115,111
Loans Receivable | Allowance for unfunded commitments
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually evaluated for impairment
Allowance for Loan Losses,Collectively evaluated for impairment	2,002	2,542
Allowance for Loan Losses, PCI
Allowance for Loan Losses, Ending balance	$ 2,002	$ 2,542	$ 1,930	$ 2,165

Loans and Allowance for Credi84

Loans and Allowance for Credit Losses (Details 5) - Loans Receivable - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Average balances of impaired loans and income recognized on impaired loans
Average Balance	$ 90,425	$ 107,236	$ 109,127
Interest Revenue Recognized During Impairment	4,274	4,962	5,036
Cash Basis Interest Revenue Received	4,338	5,121	5,200
Home equity lines of credit
Average balances of impaired loans and income recognized on impaired loans
Average Balance	93	420	518
Interest Revenue Recognized During Impairment	4	17	21
Cash Basis Interest Revenue Received	4	16	22
Indirect auto
Average balances of impaired loans and income recognized on impaired loans
Average Balance	928	221
Interest Revenue Recognized During Impairment	47	11
Cash Basis Interest Revenue Received	47	11
Commercial
Average balances of impaired loans and income recognized on impaired loans
Average Balance	73,307	88,589	93,393
Interest Revenue Recognized During Impairment	3,475	4,148	4,315
Cash Basis Interest Revenue Received	3,543	4,337	4,471
Commercial | Owner occupied commercial real estate
Average balances of impaired loans and income recognized on impaired loans
Average Balance	33,297	40,182	35,641
Interest Revenue Recognized During Impairment	1,667	1,970	1,741
Cash Basis Interest Revenue Received	1,704	2,059	1,804
Commercial | Income producing commercial real estate
Average balances of impaired loans and income recognized on impaired loans
Average Balance	31,661	25,441	30,519
Interest Revenue Recognized During Impairment	1,418	1,260	1,505
Cash Basis Interest Revenue Received	1,457	1,259	1,542
Commercial | Construction
Average balances of impaired loans and income recognized on impaired loans
Average Balance	5,879	18,667	23,007
Interest Revenue Recognized During Impairment	267	755	897
Cash Basis Interest Revenue Received	264	759	897
Commercial | Commercial & industrial
Average balances of impaired loans and income recognized on impaired loans
Average Balance	2,470	4,299	4,226
Interest Revenue Recognized During Impairment	123	163	172
Cash Basis Interest Revenue Received	118	260	228
Residential | Residential mortgage
Average balances of impaired loans and income recognized on impaired loans
Average Balance	14,118	15,504	12,640
Interest Revenue Recognized During Impairment	637	612	544
Cash Basis Interest Revenue Received	633	572	546
Residential | Construction
Average balances of impaired loans and income recognized on impaired loans
Average Balance	1,677	2,279	2,271
Interest Revenue Recognized During Impairment	89	158	137
Cash Basis Interest Revenue Received	88	169	139
Consumer installment
Average balances of impaired loans and income recognized on impaired loans
Average Balance	302	223	305
Interest Revenue Recognized During Impairment	22	16	19
Cash Basis Interest Revenue Received	$ 23	$ 16	$ 22

Loans and Allowance for Credi85

Loans and Allowance for Credit Losses (Details 6) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans individually evaluated for impairment by class of loans
Allowance for loan losses allocated	$ 3,452	$ 6,797
Loans Receivable
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	29,096	33,601
Recorded Investment, With no related allowance recorded	28,309	32,725
Unpaid Principal Balance, With an allowance recorded	59,541	72,789
Recorded Investment, With an allowance recorded	57,354	71,283
Allowance for loan losses, With an allowance recorded	3,452	6,797
Unpaid Principal Balance	88,637	106,390
Recorded Investment	85,663	104,008
Allowance for loan losses allocated	3,452	6,797
Loans Receivable | Home equity lines of credit
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded
Recorded Investment, With no related allowance recorded
Unpaid Principal Balance, With an allowance recorded	63	167
Recorded Investment, With an allowance recorded	63	167
Allowance for loan losses, With an allowance recorded	2	6
Allowance for loan losses allocated	2	6
Loans Receivable | Indirect auto
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	1,165	749
Recorded Investment, With no related allowance recorded	1,165	749
Unpaid Principal Balance, With an allowance recorded
Recorded Investment, With an allowance recorded
Allowance for loan losses, With an allowance recorded
Allowance for loan losses allocated
Loans Receivable | Commercial
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	27,301	32,852
Recorded Investment, With no related allowance recorded	26,516	31,976
Unpaid Principal Balance, With an allowance recorded	43,673	56,625
Recorded Investment, With an allowance recorded	42,329	55,537
Allowance for loan losses, With an allowance recorded	2,857	3,905
Loans Receivable | Commercial | Owner occupied commercial real estate
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	9,171	15,584
Recorded Investment, With no related allowance recorded	8,477	15,251
Unpaid Principal Balance, With an allowance recorded	23,574	25,642
Recorded Investment, With an allowance recorded	22,944	25,383
Allowance for loan losses, With an allowance recorded	1,746	1,788
Allowance for loan losses allocated	1,746	1,788
Loans Receivable | Commercial | Income producing commercial real estate
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	16,864	13,044
Recorded Investment, With no related allowance recorded	16,864	12,827
Unpaid Principal Balance, With an allowance recorded	13,681	13,850
Recorded Investment, With an allowance recorded	13,595	13,616
Allowance for loan losses, With an allowance recorded	885	1,705
Allowance for loan losses allocated	885	1,705
Loans Receivable | Commercial | Construction Loans
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	845	3,731
Recorded Investment, With no related allowance recorded	841	3,429
Unpaid Principal Balance, With an allowance recorded	4,739	14,237
Recorded Investment, With an allowance recorded	4,209	13,729
Allowance for loan losses, With an allowance recorded	168	138
Allowance for loan losses allocated	168	138
Loans Receivable | Commercial | Commercial & industrial
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	421	493
Recorded Investment, With no related allowance recorded	334	469
Unpaid Principal Balance, With an allowance recorded	1,679	2,896
Recorded Investment, With an allowance recorded	1,581	2,809
Allowance for loan losses, With an allowance recorded	58	274
Allowance for loan losses allocated	58	274
Loans Receivable | Residential | Residential mortgage
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded	630
Recorded Investment, With no related allowance recorded	628
Unpaid Principal Balance, With an allowance recorded	13,565	14,178
Recorded Investment, With an allowance recorded	13,078	13,831
Allowance for loan losses, With an allowance recorded	517	2,818
Allowance for loan losses allocated	517	2,818
Loans Receivable | Residential | Construction Loans
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded
Recorded Investment, With no related allowance recorded
Unpaid Principal Balance, With an allowance recorded	1,947	1,465
Recorded Investment, With an allowance recorded	1,594	1,419
Allowance for loan losses, With an allowance recorded	64	55
Allowance for loan losses allocated	64	55
Loans Receivable | Consumer installment
Loans individually evaluated for impairment by class of loans
Unpaid Principal Balance, With no related allowance recorded
Recorded Investment, With no related allowance recorded
Unpaid Principal Balance, With an allowance recorded	293	354
Recorded Investment, With an allowance recorded	290	329
Allowance for loan losses, With an allowance recorded	12	13
Allowance for loan losses allocated	$ 12	$ 13

Loans and Allowance for Credi86

Loans and Allowance for Credit Losses (Details 7) - Loans Receivable - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	$ 21,539	$ 22,653
Home equity lines of credit
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,831	851
Indirect auto
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,275	823
Commercial
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	11,201	14,583
Commercial | Owner occupied commercial real estate
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	7,373	8,545
Commercial | Income producing commercial real estate
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,324	3,768
Commercial | Construction
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,538	1,378
Residential | Residential mortgage
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	6,368	5,873
Residential | Construction
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	776	348
Consumer installment
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	88	175
Commercial & industrial | Commercial
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	$ 966	$ 892

Loans and Allowance for Credi87

Loans and Allowance for Credit Losses (Details 8) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Recorded investment in nonaccrual loans by loan class
Loans Outstanding, Ending Balance	$ 6,920,636	$ 5,995,441
Loans Receivable
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	30,061	26,984
Loans Not Past Due	6,827,811	5,917,138
Loans Outstanding, PCI	62,764	51,319
Loans Outstanding, Ending Balance	6,920,636	5,995,441
Loans Receivable | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	16,872	14,584
Loans Receivable | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	5,351	4,995
Loans Receivable | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	7,838	7,405
Loans Receivable | Home equity lines of credit
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	3,054	1,522
Loans Not Past Due	650,346	586,115
Loans Outstanding, PCI	2,010	1,688
Loans Outstanding, Ending Balance	655,410	589,325
Loans Receivable | Home equity lines of credit | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,996	1,047
Loans Receivable | Home equity lines of credit | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	101	188
Loans Receivable | Home equity lines of credit | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	957	287
Loans Receivable | Indirect auto
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	2,319	1,483
Loans Not Past Due	457,035	454,439
Loans Outstanding, PCI		49
Loans Outstanding, Ending Balance	459,354	455,971
Loans Receivable | Indirect auto | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,109	611
Loans Receivable | Indirect auto | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	301	311
Loans Receivable | Indirect auto | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	909	561
Loans Receivable | Commercial
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	11,423	13,683
Loans Not Past Due	4,570,847	3,834,700
Loans Outstanding, PCI	53,267	46,274
Loans Outstanding, Ending Balance	4,635,537	3,894,657
Loans Receivable | Commercial | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	4,963	6,307
Loans Receivable | Commercial | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	2,274	3,090
Loans Receivable | Commercial | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	4,186	4,286
Loans Receivable | Commercial | Owner occupied commercial real estate
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	7,245	8,580
Loans Not Past Due	1,624,531	1,548,586
Loans Outstanding, PCI	18,584	13,822
Loans Outstanding, Ending Balance	1,650,360	1,570,988
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	2,195	4,211
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,664	1,823
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	3,386	2,546
Loans Receivable | Commercial | Income producing commercial real estate
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	2,058	2,521
Loans Not Past Due	1,254,164	988,485
Loans Outstanding, PCI	25,319	29,458
Loans Outstanding, Ending Balance	1,281,541	1,020,464
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,373	523
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	355	1,046
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	330	952
Loans Receivable | Commercial | Construction
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	758	1,147
Loans Not Past Due	624,835	514,849
Loans Outstanding, PCI	8,328	2,339
Loans Outstanding, Ending Balance	633,921	518,335
Loans Receivable | Commercial | Construction | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	452	715
Loans Receivable | Commercial | Construction | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	14	133
Loans Receivable | Commercial | Construction | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	292	299
Loans Receivable | Residential | Residential mortgage
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	10,720	7,637
Loans Not Past Due	839,610	754,197
Loans Outstanding, PCI	6,395	2,341
Loans Outstanding, Ending Balance	856,725	764,175
Loans Receivable | Residential | Residential mortgage | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	7,221	4,385
Loans Receivable | Residential | Residential mortgage | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,799	1,185
Loans Receivable | Residential | Residential mortgage | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,700	2,067
Loans Receivable | Residential | Construction
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,760	1,851
Loans Not Past Due	187,350	173,425
Loans Outstanding, PCI	933	926
Loans Outstanding, Ending Balance	190,043	176,202
Loans Receivable | Residential | Construction | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	950	1,624
Loans Receivable | Residential | Construction | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	759	106
Loans Receivable | Residential | Construction | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	51	121
Loans Receivable | Consumer installment
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	785	808
Loans Not Past Due	122,623	114,262
Loans Outstanding, PCI	159	41
Loans Outstanding, Ending Balance	123,567	115,111
Loans Receivable | Consumer installment | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	633	610
Loans Receivable | Consumer installment | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	117	115
Loans Receivable | Consumer installment | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	35	83
Loans Receivable | Commercial & industrial | Commercial
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	1,362	1,435
Loans Not Past Due	1,067,317	782,780
Loans Outstanding, PCI	1,036	655
Loans Outstanding, Ending Balance	1,069,715	784,870
Loans Receivable | Commercial & industrial | Commercial | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	943	858
Loans Receivable | Commercial & industrial | Commercial | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	241	88
Loans Receivable | Commercial & industrial | Commercial | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans, Total Past Due	$ 178	$ 489

Loans and Allowance for Credi88

Loans and Allowance for Credit Losses (Details 9) - Loans Receivable $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Contract	Dec. 31, 2015USD ($)Contract	Dec. 31, 2014USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	94	80	79
Pre-Modification Outstanding Recorded Investment	$ 9,347	$ 21,110	$ 13,412
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 9,172	$ 20,870	$ 13,235
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract	4	4	12
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment	$ 371	$ 212	$ 1,050
Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	2,089	189	1,194
Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	5,930	19,783	10,531
Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 1,153	$ 898	$ 1,510
Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	2	1
Pre-Modification Outstanding Recorded Investment	$ 38	$ 187	$ 36
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 38	$ 177	$ 36
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment
Home equity lines of credit | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	38
Home equity lines of credit | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		177
Home equity lines of credit | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification			$ 36
Indirect auto
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	35
Pre-Modification Outstanding Recorded Investment	$ 966
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 966
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment
Indirect auto | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification
Indirect auto | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification
Indirect auto | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 966
Commercial
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	17	32	40
Pre-Modification Outstanding Recorded Investment	$ 4,426	$ 17,632	$ 9,957
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 4,426	$ 17,426	$ 9,957
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract	3	1	4
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment	$ 286	$ 178	$ 400
Commercial | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		45	856
Commercial | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	4,361	16,835	8,076
Commercial | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 65	$ 546	$ 1,025
Commercial | Owner occupied commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	8	14	12
Pre-Modification Outstanding Recorded Investment	$ 2,699	$ 13,592	$ 4,793
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 2,699	$ 13,465	$ 4,793
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract	1	1	2
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment	$ 252	$ 178	$ 346
Commercial | Owner occupied commercial real estate | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification			229
Commercial | Owner occupied commercial real estate | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	2,699	13,266	4,564
Commercial | Owner occupied commercial real estate | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		$ 199
Commercial | Income producing commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	7	10
Pre-Modification Outstanding Recorded Investment	$ 257	$ 2,135	$ 2,026
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 257	$ 2,135	$ 2,026
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment
Commercial | Income producing commercial real estate | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		45	411
Commercial | Income producing commercial real estate | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	257	2,090	911
Commercial | Income producing commercial real estate | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification			$ 704
Commercial | Construction
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	3	2	9
Pre-Modification Outstanding Recorded Investment	$ 458	$ 580	$ 1,953
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 458	$ 580	$ 1,953
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment
Commercial | Construction | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification
Commercial | Construction | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	393	580	1,632
Commercial | Construction | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 65		$ 321
Commercial | Commercial & industrial
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5	9	9
Pre-Modification Outstanding Recorded Investment	$ 1,012	$ 1,325	$ 1,185
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 1,012	$ 1,246	$ 1,185
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract	2		2
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment	$ 34		$ 54
Commercial | Commercial & industrial | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification			216
Commercial | Commercial & industrial | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	1,012	899	969
Commercial | Commercial & industrial | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		$ 347
Residential | Residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	28	32	32
Pre-Modification Outstanding Recorded Investment	$ 3,262	$ 2,847	$ 3,055
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 3,167	$ 2,847	$ 2,878
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract	1	1	8
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment	$ 85	$ 2	$ 650
Residential | Residential mortgage | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	1,992	144	338
Residential | Residential mortgage | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	1,135	2,369	2,173
Residential | Residential mortgage | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 40	$ 334	$ 367
Residential | Construction
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	7	4	1
Pre-Modification Outstanding Recorded Investment	$ 584	$ 222	$ 138
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 504	$ 198	$ 138
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment
Residential | Construction | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	46
Residential | Construction | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	376	198	138
Residential | Construction | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 82
Consumer installment
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	6	10	5
Pre-Modification Outstanding Recorded Investment	$ 71	$ 222	$ 226
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 71	$ 222	$ 226
Troubled Debt Restructurings That Have Subsequently Defaulted, Number of Contracts | Contract		2
Troubled Debt Restructurings That Have Subsequently Defaulted, Recorded Investment		$ 32
Consumer installment | Rate Reduction
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	13
Consumer installment | Structure
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	58	204	144
Consumer installment | Other
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification		$ 18	$ 82

Loans and Allowance for Credi89

Loans and Allowance for Credit Losses (Details 10) - Loans Receivable $ in Thousands	Dec. 31, 2016USD ($)Contract	Dec. 31, 2015USD ($)Contract
Additional information on troubled debt restructurings
Number of Contracts | Contract	409	413
Pre-Modification Outstanding Recorded Investment	$ 75,047	$ 88,015
Post-Modification Outstanding Recorded Investment	$ 73,172	$ 86,588
Home equity lines of credit
Additional information on troubled debt restructurings
Number of Contracts | Contract	1	2
Pre-Modification Outstanding Recorded Investment	$ 63	$ 167
Post-Modification Outstanding Recorded Investment	$ 63	$ 167
Indirect auto
Additional information on troubled debt restructurings
Number of Contracts | Contract	65	49
Pre-Modification Outstanding Recorded Investment	$ 1,165	$ 749
Post-Modification Outstanding Recorded Investment	$ 1,165	$ 749
Commercial
Additional information on troubled debt restructurings
Number of Contracts | Contract	163	191
Pre-Modification Outstanding Recorded Investment	$ 57,607	$ 71,295
Post-Modification Outstanding Recorded Investment	$ 56,354	$ 70,093
Commercial | Owner occupied commercial real estate
Additional information on troubled debt restructurings
Number of Contracts | Contract	63	68
Pre-Modification Outstanding Recorded Investment	$ 26,882	$ 34,119
Post-Modification Outstanding Recorded Investment	$ 26,192	$ 33,633
Commercial | Income producing commercial real estate
Additional information on troubled debt restructurings
Number of Contracts | Contract	55	60
Pre-Modification Outstanding Recorded Investment	$ 23,710	$ 19,237
Post-Modification Outstanding Recorded Investment	$ 23,684	$ 19,059
Commercial | Construction
Additional information on troubled debt restructurings
Number of Contracts | Contract	29	38
Pre-Modification Outstanding Recorded Investment	$ 5,500	$ 15,045
Post-Modification Outstanding Recorded Investment	$ 5,049	$ 14,592
Residential | Residential mortgage
Additional information on troubled debt restructurings
Number of Contracts | Contract	134	128
Pre-Modification Outstanding Recorded Investment	$ 13,995	$ 13,992
Post-Modification Outstanding Recorded Investment	$ 13,706	$ 13,831
Residential | Construction
Additional information on troubled debt restructurings
Number of Contracts | Contract	27	21
Pre-Modification Outstanding Recorded Investment	$ 1,925	$ 1,464
Post-Modification Outstanding Recorded Investment	$ 1,594	$ 1,419
Consumer installment
Additional information on troubled debt restructurings
Number of Contracts | Contract	19	22
Pre-Modification Outstanding Recorded Investment	$ 292	$ 348
Post-Modification Outstanding Recorded Investment	$ 290	$ 329
Commercial & industrial | Commercial
Additional information on troubled debt restructurings
Number of Contracts | Contract	16	25
Pre-Modification Outstanding Recorded Investment	$ 1,515	$ 2,894
Post-Modification Outstanding Recorded Investment	$ 1,429	$ 2,809

Loans and Allowance for Credi90

Loans and Allowance for Credit Losses (Details 11) - Loans Receivable - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Risk category of loans by class of loans
Total loans, excluding PCI loans	$ 6,857,872	$ 5,944,122
Carrying value of PCI loans	62,764	51,319
Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	6,708,474	5,770,315
Carrying value of PCI loans	26,048	13,464
Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	36,885	48,473
Carrying value of PCI loans	13,343	13,009
Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	112,513	125,334
Carrying value of PCI loans	23,373	23,935
Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans		911
Home equity lines of credit
Risk category of loans by class of loans
Total loans, excluding PCI loans	653,400	587,637
Carrying value of PCI loans	2,010	1,688
Home equity lines of credit | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	647,425	581,385
Carrying value of PCI loans	1,094	214
Home equity lines of credit | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans		24
Carrying value of PCI loans
Home equity lines of credit | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	5,975	6,228
Carrying value of PCI loans	916	1,474
Home equity lines of credit | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Indirect auto
Risk category of loans by class of loans
Total loans, excluding PCI loans	459,354	455,922
Carrying value of PCI loans		49
Indirect auto | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	456,717	453,935
Carrying value of PCI loans
Indirect auto | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Indirect auto | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	2,637	1,987
Carrying value of PCI loans		49
Indirect auto | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Commercial
Risk category of loans by class of loans
Total loans, excluding PCI loans	4,582,270	3,848,383
Carrying value of PCI loans	53,267	46,274
Commercial | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	4,466,109	3,708,727
Carrying value of PCI loans	18,708	12,904
Commercial | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	36,885	48,418
Carrying value of PCI loans	13,343	13,009
Commercial | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	79,276	91,238
Carrying value of PCI loans	21,216	19,962
Commercial | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans		399
Commercial | Owner occupied commercial real estate
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,631,776	1,557,166
Carrying value of PCI loans	18,584	13,822
Commercial | Owner occupied commercial real estate | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,577,301	1,483,109
Carrying value of PCI loans	2,044	1,811
Commercial | Owner occupied commercial real estate | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	18,029	25,926
Carrying value of PCI loans	3,444	6,808
Commercial | Owner occupied commercial real estate | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	36,446	48,131
Carrying value of PCI loans	13,096	4,854
Commercial | Owner occupied commercial real estate | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans		349
Commercial | Income producing commercial real estate
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,256,222	991,006
Carrying value of PCI loans	25,319	29,458
Commercial | Income producing commercial real estate | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,220,626	956,168
Carrying value of PCI loans	13,236	9,378
Commercial | Income producing commercial real estate | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	8,502	7,439
Carrying value of PCI loans	8,474	6,073
Commercial | Income producing commercial real estate | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	27,094	27,399
Carrying value of PCI loans	3,609	14,007
Commercial | Income producing commercial real estate | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Commercial | Construction
Risk category of loans by class of loans
Total loans, excluding PCI loans	625,593	515,996
Carrying value of PCI loans	8,328	2,339
Commercial | Construction | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	612,900	499,649
Carrying value of PCI loans	3,212	1,698
Commercial | Construction | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	6,166	6,943
Carrying value of PCI loans	1,265	45
Commercial | Construction | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	6,527	9,404
Carrying value of PCI loans	3,851	596
Commercial | Construction | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Residential | Residential mortgage
Risk category of loans by class of loans
Total loans, excluding PCI loans	850,330	761,834
Carrying value of PCI loans	6,395	2,341
Residential | Residential mortgage | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	829,844	740,129
Carrying value of PCI loans	5,189
Residential | Residential mortgage | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans		31
Carrying value of PCI loans
Residential | Residential mortgage | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	20,486	21,674
Carrying value of PCI loans	1,206	2,341
Residential | Residential mortgage | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Residential | Construction
Risk category of loans by class of loans
Total loans, excluding PCI loans	189,110	175,276
Carrying value of PCI loans	933	926
Residential | Construction | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	185,643	171,961
Carrying value of PCI loans	898	345
Residential | Construction | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Residential | Construction | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	3,467	3,315
Carrying value of PCI loans	35	69
Residential | Construction | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans		512
Consumer installment
Risk category of loans by class of loans
Total loans, excluding PCI loans	123,408	115,070
Carrying value of PCI loans	159	41
Consumer installment | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	122,736	114,178
Carrying value of PCI loans	159	1
Consumer installment | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Consumer installment | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	672	892
Carrying value of PCI loans		40
Consumer installment | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans
Commercial & industrial | Commercial
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,068,679	784,215
Carrying value of PCI loans	1,036	655
Commercial & industrial | Commercial | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,055,282	769,801
Carrying value of PCI loans	216	17
Commercial & industrial | Commercial | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	4,188	8,110
Carrying value of PCI loans	160	83
Commercial & industrial | Commercial | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	9,209	6,304
Carrying value of PCI loans	660	505
Commercial & industrial | Commercial | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans
Carrying value of PCI loans		$ 50

Loans and Allowance for Credi91

Loans and Allowance for Credit Losses (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remaining accretable fair value mark on loans	$ 7,140,000	$ 7,030,000
Criteria amount for evaluation of impairment	500,000
Accruing substandard relationship	2,000,000
Gross additional interest income that would have been earned if the nonaccrual loans had performed as per original term	975,000	1,110,000	$ 1,710,000
Specific reserves	2,900,000	6,370,000
Loans outstanding classified as troubled debt restructurings	95,000	224,000
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Overdrawn deposit accounts	870,000	827,000
Indirect auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remaining accretable fair value mark on loans	11,400,000	12,000,000
FHLB
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged as collateral to secure FHLB advances	3,330,000,000	2,440,000,000
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of PCI loans	62,764,000	51,319,000
Outstanding balance of PCI loans	87,900,000	71,000,000
Loans Receivable | Indirect auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of PCI loans		$ 49,000

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Premises and equipments
Premises and equipments, gross	$ 300,294	$ 279,275
Less accumulated depreciation	(110,356)	(101,110)
Premises and equipment, net	189,938	178,165
Land and land improvements
Premises and equipments
Premises and equipments, gross	79,946	79,686
Buildings and improvements
Premises and equipments
Premises and equipments, gross	135,004	127,493
Furniture and equipment
Premises and equipments
Premises and equipments, gross	79,597	68,309
Construction in progress
Premises and equipments
Premises and equipments, gross	$ 5,747	$ 3,787

Premises and Equipment (Detai93

Premises and Equipment (Details 1) $ in Thousands	Dec. 31, 2016USD ($)
Rent commitments under operating leases
2,017	$ 4,028
2,018	3,663
2,019	3,545
2,020	3,419
2,021	3,284
Thereafter	11,151
Total	$ 29,090

Premises and Equipment (Detail

Premises and Equipment (Detail Textuals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Premises and Equipment (Textual) [Abstract]
Depreciation expense	$ 11,500	$ 9,360	$ 8,660
Recognized impairment on properties acquired for future expansion		5,970
Rent expense	$ 4,130	$ 2,720	$ 2,140

Goodwill and Other Intangible95

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Core deposit intangible	$ 51,342	$ 49,772
Less: accumulated amortization	(37,145)	(32,964)
Total intangibles subject to amortization, net	14,197	16,808
Goodwill	142,025	130,612	$ 1,509
Total goodwill and other intangible assets, net	$ 156,222	$ 147,420

Goodwill and Other Intangible96

Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill balance, beginning of year	$ 436,202	$ 307,099
Acquisition of Tidelands	10,713
Acquisition of Palmetto		114,402
Acquisition of MoneyTree		14,701
Measurement period adjustments	700
Goodwill balance, end of year	447,615	436,202
Accumulated impairment losses balance, beginning of year	(305,590)	(305,590)
Accumulated impairment losses balance, end of year	(305,590)	(305,590)
Goodwill, net of Accumulated Impairment Losses, beginning of year	130,612	1,509
Acquisition of Palmetto		114,402
Acquisition of MoneyTree		14,701
Acquisition of Tidelands	10,713
Measurement period adjustments	700
Goodwill, net of Accumulated Impairment Losses, end of year	$ 142,025	$ 130,612

Goodwill and Other Intangible97

Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
2,017	$ 3,413
2,018	2,690
2,019	2,171
2,020	1,678
2,021	1,214
Thereafter	3,031
Total intangibles subject to amortization, net	$ 14,197	$ 16,808

Goodwill and Other Intangible98

Goodwill and Other Intangible Assets (Detail Textuals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 4,182	$ 2,444	$ 1,348

Foreclosed Property (Details)

Foreclosed Property (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Foreclosed Property [Line Items]
Total foreclosed property	$ 7,949	$ 4,883
Commercial Real Estate
Foreclosed Property [Line Items]
Total foreclosed property	3,181	2,652
Commercial Construction
Foreclosed Property [Line Items]
Total foreclosed property	2,977	437
Total commercial
Foreclosed Property [Line Items]
Total foreclosed property	6,158	3,089
Residential mortgage
Foreclosed Property [Line Items]
Total foreclosed property	1,791	1,322
Residential Construction
Foreclosed Property [Line Items]
Total foreclosed property		$ 472

Servicing Rights (Details)

Servicing Rights (Details) - Government guaranteed loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing rights for government guaranteed loans, beginning of period	$ 3,712	$ 2,551
Additions:
Acquired servicing rights		137	2,133
Originated servicing rights capitalized upon sale of loans	2,723	1,699	832
Subtractions:
Disposals	(393)	(353)	(152)
Changes in fair value:
Due to change in valuation inputs or assumptions used in the valuation model	(290)	(322)	(262)
Servicing rights for government guaranteed loans, end of period	$ 5,752	$ 3,712	$ 2,551

Servicing Rights (Details 1)

Servicing Rights (Details 1) - Government guaranteed loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Servicing Assets at Fair Value [Line Items]
Fair value of retained Servicing Assets	$ 5,752	$ 3,712	$ 2,551
Prepayment rate assumption	7.12%	6.95%
10% adverse change	$ (132)	$ (84)
20% adverse change	$ (257)	$ (163)
Discount rate	11.00%	11.80%
Weighted-average life (years)	6 years 9 months 18 days	6 years 8 months 12 days
Weighted-average gross margin	1.86%	2.02%
100 bps adverse change
Servicing Assets at Fair Value [Line Items]
Adverse change	$ (167)	$ (109)
200bps adverse change
Servicing Assets at Fair Value [Line Items]
Adverse change	$ (324)	$ (212)

Servicing Rights (Details 2)

Servicing Rights (Details 2) - Residential mortgage servicing rights - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Residential mortgage servicing rights, net of valuation allowance, beginning of period	$ 3,370
Additions:
Acquired servicing rights		3,454
Originated servicing rights capitalized upon sale of loans	2,124	199
Subtractions:
Amortization	(1,117)	(273)
Impairment	(5)	(10)
Residential mortgage servicing rights, net of valuation allowance, end of period	$ 4,372	$ 3,370

Servicing Rights (Details 3)

Servicing Rights (Details 3) - Residential mortgage servicing rights - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance, beginning of period	$ 10
Additions charged to operations, net	5	10
Valuation allowance, end of period	$ 15	$ 10

Servicing Rights (Details 4)

Servicing Rights (Details 4) - Residential mortgage servicing rights - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Servicing Asset [Line Items]
2,017	$ 1,081
2,018	876
2,019	706
2,020	564
2,021	447
thereafter	698
Servicing asset, Total	$ 4,372	$ 3,370

Servicing Rights (Detail Textua

Servicing Rights (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Government guaranteed loans
Schedule Of Servicing Asset [Line Items]
Servicing of asset for others, Amount not included in balance sheet	$ 256,000,000	$ 151,000,000
Contractually specified servicing fees earned by United on servicing rights	1,640,000	1,070,000	$ 513,000
Estimated fair value of residential mortgage servicing rights	5,752,000	3,712,000	$ 2,551,000
Residential mortgage servicing rights
Schedule Of Servicing Asset [Line Items]
Servicing of asset for others, Amount not included in balance sheet	543,000,000	377,000,000
Contractually specified servicing fees earned by United on servicing rights	1,030,000	299,000
Estimated fair value of residential mortgage servicing rights	$ 5,170,000	$ 3,520,000

Deposits (Details)

Deposits (Details) $ in Thousands	Dec. 31, 2016USD ($)
Maturing In:
2,017	$ 990,154
2,018	172,710
2,019	58,730
2,020	32,488
2,021	35,453
thereafter	87,471
Total	$ 1,377,006

Deposits (Detail Textuals)

Deposits (Detail Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Deposits [Abstract]
Time deposits (excluding brokered time deposits)	$ 144	$ 139
Certificates of deposit	89.9	234
Daily average balance of brokered deposits	$ 171	$ 269
Description of fair value hedging instrument	United has certain market-linked brokered deposits that are considered hybrid instruments that contain embedded derivatives that have been bifurcated from the host contract leaving host instruments paying a rate of 90 day LIBOR minus a spread that results in a negative yield.

Federal Home Loan Bank Advan108

Federal Home Loan Bank Advances (Detail Textuals) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB advances	$ 709	$ 430
Weighted average interest rate advances	0.67%	0.49%
Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest payment rates	3.95%
Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest payment rates	0.48%

Long-term Debt (Details)

Long-term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Long-term debt
Long-term Debt	$ 175,078	$ 163,836
Less discount	(4,976)	(1,784)
2017 senior debentures
Long-term debt
Long-term Debt	$ 35,000	35,000
Issue Date	2,012
Stated Maturity Date	2,017
Earliest Call Date	2,017
Interest Rate	9.00%
2018 senior debentures
Long-term debt
Long-term Debt	$ 40,000	40,000
Issue Date	2,013
Stated Maturity Date	2,018
Earliest Call Date	2,015
Interest Rate	6.00%
2022 senior debentures
Long-term debt
Long-term Debt	$ 50,000	50,000
Issue Date	2,015
Stated Maturity Date	2,022
Earliest Call Date	2,020
Interest Rate	5.000% through August 13, 2020, 3-month LIBOR plus 3.814% thereafter
2027 senior debentures
Long-term debt
Long-term Debt	$ 35,000	35,000
Issue Date	2,015
Stated Maturity Date	2,027
Earliest Call Date	2,025
Interest Rate	5.500% through August 13, 2025 3-month LIBOR plus 3.71% thereafter
Total senior debentures
Long-term debt
Long-term Debt	$ 160,000	160,000
Southern Bancorp Capital Trust I
Long-term debt
Long-term Debt	$ 4,382	4,382
Issue Date	2,004
Stated Maturity Date	2,034
Earliest Call Date	2,009
Prime + Interest rate	1.00%
United Community Statutory Trust III
Long-term debt
Long-term Debt	$ 1,238	1,238
Issue Date	2,008
Stated Maturity Date	2,038
Earliest Call Date	2,013
Prime + Interest rate	3.00%
Tidelands Statutory Trust I
Long-term debt
Long-term Debt	$ 8,248
Issue Date	2,006
Stated Maturity Date	2,036
Earliest Call Date	2,011
Interest Rate	3-month LIBOR plus 1.38
Tidelands Statutory Trust II
Long-term debt
Long-term Debt	$ 6,186
Issue Date	2,008
Stated Maturity Date	2,038
Earliest Call Date	2,013
Interest Rate	3-month LIBOR plus 5.075
Total trust preferred securities
Long-term debt
Long-term Debt	$ 20,054	$ 5,620

Long-term Debt (Detail Textuals

Long-term Debt (Detail Textuals)	12 Months Ended
	Dec. 31, 2016
2017 senior debentures
Debt Instrument [Line Items]
Senior debentures maturity date	Oct. 15, 2017
2018 senior debentures
Debt Instrument [Line Items]
Percentage of principal amount redeemed	100.00%
Senior debentures maturity date	Aug. 13, 2018
2022 senior debentures
Debt Instrument [Line Items]
Percentage of principal amount redeemed	100.00%
Senior debentures maturity date	Feb. 14, 2022
2027 senior debentures
Debt Instrument [Line Items]
Percentage of principal amount redeemed	100.00%
Senior debentures maturity date	Feb. 14, 2027

Reclassifications Out of Acc111

Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains, net	$ 982	$ 2,255	$ 4,871
Loan interest revenue	268,382	223,256	196,279
Loan interest revenue	16,485	9,834	7,114
Time deposit interest expense	3,136	3,756	7,133
Money market deposit interest expense	4,982	3,466	3,060
Prior service cost
Tax (expense) or benefit	62,336	43,436	39,450
Net of tax	100,635	71,511	67,181
Reclassifications Out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(2,163)	(1,304)	484
Reclassifications Out of Accumulated Other Comprehensive Income | Realized gains on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains, net	982	2,255	4,871
Tax (expense) or benefit	(371)	(862)	(1,902)
Net of tax	611	1,393	2,969
Reclassifications Out of Accumulated Other Comprehensive Income | Amortization of (losses) gains included in net income on available-for-sale securities transferred to held to maturity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains, net	(1,759)	(1,702)	(1,656)
Tax (expense) or benefit	662	638	622
Net of tax	(1,097)	(1,064)	(1,034)
Reclassifications Out of Accumulated Other Comprehensive Income | Amounts included in net income on derivative financial instruments accounted for as cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Time deposit interest expense			(764)
Money market deposit interest expense			(223)
Deposits in banks and short-term investments interest revenue	(7)	(129)	(79)
Money market deposit interest expense	(647)	(695)	(198)
Federal Home Loan Bank advances interest expense	(1,237)	(1,112)	(234)
Time deposit interest expense			(512)
Total before tax	(1,891)	(1,936)	(2,010)
Tax (expense) or benefit	736	753	782
Net of tax	(1,155)	(1,183)	(1,228)
Reclassifications Out of Accumulated Other Comprehensive Income | Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan | Salaries and employee benefits expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service cost	(501)	(465)	(365)
Actuarial losses	(354)	(271)
Total before tax	(855)	(736)	(365)
Tax (expense) or benefit	333	286	142
Net of tax	$ (522)	$ (450)	$ (223)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Total preferred stock dividends	$ 21	$ 67	$ 439
Series B - 5% fixed until December 6, 2013, 9% thereafter
Class of Stock [Line Items]
Total preferred stock dividends			159
Series D - LIBOR plus 9.6875%, resets quarterly
Class of Stock [Line Items]
Total preferred stock dividends			280
Series H - 1% until March 15, 2016, 9% thereafter
Class of Stock [Line Items]
Total preferred stock dividends	$ 21	$ 67

Earnings Per Share (Details 1)

Earnings Per Share (Details 1) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Computation of basic and diluted loss per share
Net income available to common shareholders	$ 100,635	$ 71,511	$ 67,181
Income per common share:
Basic (in dollars per share)	$ 1.40	$ 1.09	$ 1.11
Diluted (in dollars per share)	$ 1.40	$ 1.09	$ 1.11
Weighted average common shares:
Basic (in shares)	71,910,000	65,488,000	60,588,000
Effect of dilutive securities:
Stock options (in shares)	5	4	2
Diluted (in shares)	71,915,000	65,492,000	60,590,000

Earnings Per Share (Detail Text

Earnings Per Share (Detail Textuals) - $ / shares	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Number of common stock called by warrants (in shares)	219,909	219,909	219,909
Exercise of price warrants	$ 61.40	$ 61.40	$ 61.40
Employees
Class of Stock [Line Items]
Shares issuable upon exercise of grants	72,665	241,493	313,555
Weighted average exercise price of stock options granted to employees	$ 34.34	$ 89.92	$ 93.40
Restricted Stock
Class of Stock [Line Items]
Vesting of restricted stock awards	690,970	712,667	829,201

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax expense (benefit)
Current	$ 2,609	$ 5,140	$ 1,224
Deferred	59,160	37,685	37,524
Increase in valuation allowance	567	611	702
Total income tax expense (benefit)	$ 62,336	$ 43,436	$ 39,450

Income Taxes (Details 1)

Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Differences between the provision for income taxes and statutory federal income tax rate
Pretax income at statutory rates	$ 57,047	$ 40,255	$ 37,475
Add (deduct):
State taxes, net of federal benefit	5,013	3,537	3,365
Bank owned life insurance earnings	(572)	(348)	(209)
Adjustment to reserve for uncertain tax positions	(58)	(136)	(200)
Tax-exempt interest revenue	(573)	(662)	(757)
Equity compensation	976
Transaction costs	92	509
Tax credits	(149)	(190)	(250)
Change in state statutory tax rate	250	340
Increase in valuation allowance	567	611	702
Other	(257)	(480)	(676)
Total income tax expense	$ 62,336	$ 43,436	$ 39,450

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan losses	$ 23,025	$ 25,840
Net operating loss carryforwards	112,805	155,757
Deferred compensation	9,778	8,727
Loan purchase accounting adjustments	10,529	7,940
Reserve for losses on foreclosed properties	822	2,025
Nonqualified share based compensation	1,567	3,628
Accrued expenses	4,420	3,990
Investment in partnerships	1,417	1,814
Unamortized pension actuarial losses and prior service cost	2,365	2,151
Acquired intangible assets	3,982	2,943
Unrealized losses on securities available-for-sale	561	1,351
Unrealized losses on cash flow hedges	609	936
Derivatives	764
Other	2,965	2,174
Total deferred tax assets	175,609	219,276
Deferred tax liabilities:
Acquired intangible assets	3,485	5,034
Premises and equipment		398
Loan origination costs	5,885	5,030
Prepaid expenses	689	729
Servicing asset	3,437	2,208
Uncertain tax positions	3,892	3,981
Total deferred tax liabilities	17,388	17,380
Less valuation allowance	3,885	4,283
Net deferred tax asset	$ 154,336	$ 197,613

Income Taxes (Details 3)

Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of the beginning and ending unrecognized tax benefit
Balance at beginning of year	$ 3,981	$ 4,195	$ 4,503
Additions based on tax positions related to the current year	400	371	374
Decreases resulting from a lapse in the applicable statute of limitations	(489)	(585)	(682)
Balance at end of year	$ 3,892	$ 3,981	$ 4,195

Income Taxes (Detail Textuals)

Income Taxes (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Tax Credit Carryforward [Line Items]
Statutory federal income tax rate	35.00%
Increase in deferred tax asset due to merger and acquisition	$ 16,100,000
Reversal of the valuation allowance	3,880,000
Net deferred tax asset realized based upon future taxable income	154,000,000
Federal alternative minimum tax credits	37,600,000
Federal alternative minimum tax credits subject to annual limitation	2,070,000
Tax benefit related to Uncertain tax positions that increases income from continuing operations	3,250,000
Valuation allowance	3,885,000	$ 4,283,000
Net deferred tax asset	154,336,000	$ 197,613,000
Begin to expire in 2018
Tax Credit Carryforward [Line Items]
Net deferred tax asset realized based upon future taxable income	3,730,000
Begin to expire in 2028
Tax Credit Carryforward [Line Items]
Federal general business tax credits	3,160,000
Federal alternative minimum tax credits subject to annual limitation	10,200,000
Begin to expire in 2029
Tax Credit Carryforward [Line Items]
Federal net operating loss carryforwards	37,600,000
Begin to expire in 2030
Tax Credit Carryforward [Line Items]
Net deferred tax asset realized based upon future taxable income	450,000,000
Federal net operating loss carryforwards	183,000,000
Begin to expire in 2019
Tax Credit Carryforward [Line Items]
Net deferred tax asset realized based upon future taxable income	286,000
Begin to expire in 2026
Tax Credit Carryforward [Line Items]
Net deferred tax asset realized based upon future taxable income	8,180,000
Begin to expire in 2017
Tax Credit Carryforward [Line Items]
State tax credits	$ 6,460,000

Pension and Employee Benefit120

Pension and Employee Benefit Plans (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Modified Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate for disclosures	4.00%	4.25%
Discount rate for net periodic benefit cost	4.00%	4.00%
Expected long-term rate of return
Rate of compensation increase
Measurement date	12/31/2016	12/31/2015
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate for disclosures	4.25%	4.53%
Discount rate for net periodic benefit cost	4.53%	4.50%
Expected long-term rate of return	4.00%	6.30%
Rate of compensation increase
Measurement date	12/31/2016	12/31/2015

Pension and Employee Benefit121

Pension and Employee Benefit Plans (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Modified Retirement Plan
Accumulated benefit obligation:
Accumulated benefit obligation - beginning of year	$ 17,595	$ 15,869
Business combinations
Service cost	382	376	$ 341
Interest cost	740	628	579
Plan amendments	454	1,353
Actuarial (gains) losses	605	(297)
Benefits paid	(368)	(334)
Accumulated benefit obligation - end of year	19,408	17,595	15,869
Change in plan assets, at fair value
Beginning plan assets
Business combinations
Actual return
Employer contribution	368	334
Benefits paid	(368)	(334)
Plan assets - end of year
Funded status - end of year (plan assets less benefit obligations)	(19,408)	(17,595)
Funded Plan
Accumulated benefit obligation:
Accumulated benefit obligation - beginning of year	19,246
Business combinations		19,620
Service cost
Interest cost	842	292
Plan amendments
Actuarial (gains) losses	347	136
Benefits paid	(1,934)	(802)
Accumulated benefit obligation - end of year	18,501	19,246
Change in plan assets, at fair value
Beginning plan assets	17,315
Business combinations		18,028
Actual return	883	89
Employer contribution
Benefits paid	(1,934)	(802)
Plan assets - end of year	16,264	17,315
Funded status - end of year (plan assets less benefit obligations)	$ (2,237)	$ (1,931)

Pension and Employee Benefit122

Pension and Employee Benefit Plans (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 568
Amortization of net losses	(223)
Modified Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	382	$ 376	$ 341
Interest cost	740	628	579
Expected return on plan assets
Amortization of prior service cost	501	465	365
Amortization of net losses	167	271
Net periodic benefit cost	1,790	1,740	$ 1,285
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	842	292
Expected return on plan assets	(696)	(375)
Amortization of prior service cost
Amortization of net losses
Net periodic benefit cost	$ 146	$ (83)

Pension and Employee Benefit123

Pension and Employee Benefit Plans (Details 3) $ in Thousands	Dec. 31, 2016USD ($)
Modified Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
2,017	$ 419
2,018	1,072
2,019	1,066
2,020	1,149
2,021	1,142
2022-2026	5,638
Total	10,486
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
2,017	1,072
2,018	1,107
2,019	1,122
2,020	1,127
2,021	1,154
2022-2026	5,654
Total	$ 11,236

Pension and Employee Benefit124

Pension and Employee Benefit Plans (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	$ 16,071	$ 17,315
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	193
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	16,264	17,315
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	645	2,346
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Cash and cash equivalents | Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	645	2,346
Mutual funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	874	857
Mutual funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Mutual funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Mutual funds | Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	874	857
Corporate stocks | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	1,184	1,178
Corporate stocks | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	193
Corporate stocks | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Corporate stocks | Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	1,377	1,178
Exchange traded funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	13,368	12,902
Exchange traded funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Exchange traded funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Exchange traded funds | Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	$ 13,368	12,902
Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		32
Other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total plan assets
Other | Total
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		$ 32

Pension and Employee Benefit125

Pension and Employee Benefit Plans (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Employee matching contributions	70.00%
Duration of service period to receive matching contribution	1 year
Vesting period of benefits	3 years
Employee eligible compensation contributions	5.00%
Maximum matching contributions	50.00%
Compensation expense	$ 2,280,000	$ 1,450,000	$ 1,200,000
Number of common stock shares purchased			17,373
Recognized deferred compensation from continuing operation	26,000	21,000	$ 24,000
Estimated net loss	223,000
Prior service costs	568,000
Modified Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	368,000	334,000
Estimated net loss	(167,000)	(271,000)
Prior service costs	501,000	465,000	$ 365,000
Expected contribution to plan in year 2017	419,000
Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution
Estimated net loss
Prior service costs

Derivatives and Hedging Acti126

Derivatives and Hedging Activities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative instrument hedges assets fair value	$ 265	$ 31
Derivative instrument hedges liabilities fair value	1,980	2,169
Derivative assets | Fair value hedging | Corporate Bonds
Derivatives, Fair Value [Line Items]
Derivative instrument hedges assets fair value	265	31
Derivative liabilities | Fair value hedging | Brokered CD's
Derivatives, Fair Value [Line Items]
Derivative instrument hedges liabilities fair value	$ 1,980	$ 2,169

Derivatives and Hedging Acti127

Derivatives and Hedging Activities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	$ 23,423	$ 20,051
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	25,668	26,656
Derivative assets | Customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	5,266	6,185
Derivative assets | Dealer offsets to customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	3,869	31
Derivative assets | Mortgage banking - loan commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	1,552	188
Derivative assets | Mortgage banking - forward sales commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	534	1
Derivative assets | Bifurcated embedded derivatives
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	10,225	9,230
Derivative assets | Offsetting positions for de-designated cash flow hedges
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	1,977	4,416
Derivative liabilities | Customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	3,897	31
Derivative liabilities | Dealer offsets to customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	5,328	6,339
Derivative liabilities | Risk participations
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	26
Derivative liabilities | Mortgage banking - forward sales commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	96	22
Derivative liabilities | Dealer offsets to bifurcated embedded derivatives
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	14,341	15,794
Derivative liabilities | De-designated cash flow hedge
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	$ 1,980	$ 4,470

Derivatives and Hedging Acti128

Derivatives and Hedging Activities (Details 2) - Cash flow hedging - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	$ (1,891)	$ (1,936)	$ (2,010)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)		(471)	(8,437)
Interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	(7)		(79)
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	(1,884)	(1,936)	(1,931)
Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)		$ (7)	$ (107)

Derivatives and Hedging Acti129

Derivatives and Hedging Activities (Details 3) - Fair value hedging - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative	$ 2,206	$ 1,845	$ 10,913
Amount of Gain (Loss) Recognized in Income on Hedged Item	82	(1,635)	(12,194)
Interest expense | Brokered CD's
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative	1,972	1,814	13,400
Amount of Gain (Loss) Recognized in Income on Hedged Item	458	(1,507)	(14,357)
Interest revenue | Corporate Bonds
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative	234	31	(2,487)
Amount of Gain (Loss) Recognized in Income on Hedged Item	$ (376)	$ (128)	$ 2,163

Derivatives and Hedging Acti130

Derivatives and Hedging Activities (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Total gains and losses	$ 7,403	$ 1,756	$ 811
Customer derivatives and dealer offsets | Other fee revenue
Derivative Instruments, Gain (Loss) [Line Items]
Total gains and losses	3,744	1,713	729
Bifurcated embedded derivatives and dealer offsets | Other fee revenue
Derivative Instruments, Gain (Loss) [Line Items]
Total gains and losses	297	43	82
Mortgage banking derivatives | Mortgage loan revenue
Derivative Instruments, Gain (Loss) [Line Items]
Total gains and losses	3,002
Risk participations | Other fee revenue
Derivative Instruments, Gain (Loss) [Line Items]
Total gains and losses	$ 360

Derivatives and Hedging Acti131

Derivatives and Hedging Activities (Detail Textuals)	12 Months Ended
	Dec. 31, 2016USD ($)Contract	Dec. 31, 2015USD ($)Contract	Dec. 31, 2014USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Collateral pledged toward derivatives in a liability position	$ 18,500,000
Cash flow hedging | Interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Increase to deposit interest expense over the next twelve months	891,000
Fair value hedging of interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Recognized net gain (loss) related to ineffectiveness of the fair value hedging relationships	$ 2,290,000	$ 210,000	$ 1,280,000
Fair value hedging of interest rate risk | Corporate Bonds | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative contracts outstanding | Contract	1	1
Notional amount	$ 30,000,000	$ 30,000,000
Fair value hedging of interest rate risk | Interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative contracts outstanding | Contract	1	13
Notional amount	$ 12,800,000	$ 156,000,000
Interest expense | Fair value hedging of interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Net reduction of interest expense	1,610,000	4,460,000	4,610,000
Interest revenue | Fair value hedging of interest rate risk | Corporate Bonds
Derivative Instruments, Gain (Loss) [Line Items]
Net reduction of interest expense	$ 606,000	$ 498,000	$ 955,000

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Risk-based ratios:
Common equity tier 1 capital, Minimum	4.50%
Common equity tier 1 capital, Well Capitalized	6.50%
Common equity tier 1 capital	11.23%	11.45%
Tier 1 capital, Minimum	6.00%
Tier 1 capital, Well Capitalized	8.00%	6.00%
Tier 1 capital	11.23%	11.45%
Total capital, Minimum	8.00%
Total capital, Well Capitalized	10.00%
Total capital	12.04%	12.50%
Tier 1 Leverage ratio, Minimum	4.00%
Tier 1 Leverage Ratio, Well Capitalized	5.00%
Tier 1 Leverage ratio	8.54%	8.34%
Common equity tier 1 capital	$ 874,452	$ 773,677
Tier 1 capital	874,452	773,677
Total capital	937,876	844,667
Risk-weighted assets	7,789,089	6,755,011
Average total assets	$ 10,236,868	$ 9,282,243
United Community Bank
Risk-based ratios:
Common equity tier 1 capital	12.66%	13.01%
Tier 1 capital	12.66%	13.01%
Total capital	13.48%	14.06%
Tier 1 Leverage ratio	9.63%	9.47%
Common equity tier 1 capital	$ 984,529	$ 877,169
Tier 1 capital	984,529	877,169
Total capital	1,047,953	948,159
Risk-weighted assets	7,775,352	6,743,560
Average total assets	$ 10,221,318	$ 9,264,133

Regulatory Matters (Detail Text

Regulatory Matters (Detail Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Regulatory Capital Requirements [Abstract]
Common equity tier 1 capital, Well Capitalized	6.50%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	6.00%
Leverage ratio for supervisory rating of 1	3.00%
Approved cash dividend	$ 41.5	$ 77.5
Maximum percentage of credit to affiliate under federal reserve act	10.00%
Maximum percentage of credit to all affiliates under federal reserve act	20.00%

Commitments and Contingencie134

Commitments and Contingencies (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments	$ 1,542,186	$ 1,351,446
Letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments	26,862	23,373
Minimum Lease Payments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments	$ 29,090	$ 23,507

Commitments and Contingencie135

Commitments and Contingencies (Detail Textuals) $ in Thousands	Dec. 31, 2016USD ($)
Commitments and Contingencies [Abstract]
Investment in limited partnerships	$ 2,910
Commitment for additional fund	$ 1,590

Common and Preferred Stock (Det

Common and Preferred Stock (Detail Textuals) - USD ($) $ / shares in Units, $ in Millions	May 01, 2015	Mar. 03, 2014	Jan. 10, 2014	Dec. 31, 2016	Jun. 30, 2016	Mar. 22, 2016	Dec. 31, 2015
Preferred stock, shares authorized				10,000,000			10,000,000
Common Stock, Shares Authorized				150,000,000	100,000,000		100,000,000
Stock repurchase program, authorized amount						$ 50
Number of shares repurchased under the program				764,000
Value of common stock may be repurchased				$ 36.3
Fixed Rate Cumulative Perpetual Preferred Stock, Series B
Number of preferred shares redeemed			105,000
Cumulative Perpetual Preferred Stock, Series D
Number of preferred shares redeemed		16,613
Non-Cumulative Perpetual Preferred Stock, Series H
Number preferred stock shares outstanding				0			9,992
Liquidation preference amount							$ 1,000
Money Tree Corporation | Non-Cumulative Perpetual Preferred Stock, Series H
Liquidation preference amount	$ 1,000
Current dividend rate	1.00%
Dividend rate increase to rate per annum	9.00%

Equity Compensation and Rela137

Equity Compensation and Related Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted Stock
Restricted Stock, Shares
Shares Outstanding, Beginning Balance	712,667	829,201	1,073,676
Shares, Granted	302,012	265,306	97,016
Shares, Vested	(261,729)	(305,902)	(336,691)
Shares, Cancelled	(61,980)	(75,938)	(4,800)
Shares Outstanding, Ending Balance	690,970	712,667	829,201
Shares Exercisable
Restricted Stock, Weighted Average Grant Date Fair Value
Weighted-Average Grant-Date Fair Value, Beginning balance	$ 16.44	$ 14.76	$ 13.73
Weighted-Average Grant-Date Fair Value, Granted	21.42	18.66	17.33
Weighted-Average Grant-Date Fair Value, Vested	16.14	14	12.23
Weighted-Average Grant-Date Fair Value, Cancelled	17.99	15.63	13.78
Weighted-Average Grant-Date Fair Value, Ending balance	18.60	$ 16.44	$ 14.76
Weighted average grant date fair value, exercisable
Stock Options
Stock Option, Shares
Options, Outstanding Shares, Beginning Balance	241,493	313,555	350,772
Options, granted			10,000
Options, Expired	(52,853)	(45,866)	(32,810)
Options, Cancelled	(115,975)	(26,196)	(14,407)
Options, Outstanding Shares, Ending Balance	72,665	241,493	313,555
Options, Exercisable, Shares	66,415
Stock Option, Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning balance	$ 89.92	$ 93.40	$ 97.87
Weighted Average Exercise Price, Granted			16.71
Weighted Average Exercise Price, Expired	135.32	108.93	115.83
Weighted Average Exercise Price, Cancelled	104.05	98.36	97.80
Weighted-Average Exercise Price, Ending balance	34.34	$ 89.92	$ 93.40
Options, Exercisable, Weighted-Average Exercise Price	$ 36.03
Options Outstanding, Weighted Average Remaining Term (Yrs.)	3 years 7 months 2 days
Options, Exercisable, Weighted-Average Remaining Contractual Term (Yrs.)	3 years 2 months 19 days
Options Outstanding, Aggregate Intrinsic Value	$ 393
Options, Exercisable, Aggregate Intrinsic Value	$ 311

Equity Compensation and Rela138

Equity Compensation and Related Plans (Details 1)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Exercise Price Range $10.00 to 30.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares | shares	26,823
Options Outstanding, Range Minimum	$ 10
Options Outstanding, Range Maximum	30
Options Outstanding, Weighted Average Price	$ 14.96
Options Outstanding, Average Remaining Life	6 years 4 days
Options, Exercisable, Shares | shares	20,573
Weighted Average Exercise Price, Options Exercisable	$ 14.53
Exercise Price Range $30.01 to 50.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares | shares	37,052
Options Outstanding, Range Minimum	$ 30.01
Options Outstanding, Range Maximum	50
Options Outstanding, Weighted Average Price	$ 31.47
Options Outstanding, Average Remaining Life	2 years 5 months 27 days
Options, Exercisable, Shares | shares	37,052
Weighted Average Exercise Price, Options Exercisable	$ 31.47
Exercise Price Range $50.01 to 70.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares | shares	4,551
Options Outstanding, Range Minimum	$ 50.01
Options Outstanding, Range Maximum	70
Options Outstanding, Weighted Average Price	$ 66.40
Options Outstanding, Average Remaining Life	1 year 4 months 2 days
Options, Exercisable, Shares | shares	4,551
Weighted Average Exercise Price, Options Exercisable	$ 66.40
Exercise Price Range $130.01 to 147.60
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares | shares	4,239
Options Outstanding, Range Minimum	$ 130.01
Options Outstanding, Range Maximum	147.60
Options Outstanding, Weighted Average Price	$ 147.60
Options Outstanding, Average Remaining Life	3 months 22 days
Options, Exercisable, Shares | shares	4,239
Weighted Average Exercise Price, Options Exercisable	$ 147.60
Exercise Price Range $10.00 To 147.60
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares | shares	72,665
Options Outstanding, Range Minimum	$ 10
Options Outstanding, Range Maximum	147.60
Options Outstanding, Weighted Average Price	$ 34.34
Options Outstanding, Average Remaining Life	3 years 7 months 2 days
Options, Exercisable, Shares | shares	66,415
Weighted Average Exercise Price, Options Exercisable	$ 36.03

Equity Compensation and Rela139

Equity Compensation and Related Plans (Details 2)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Expected volatility	66.00%
Expected dividend yield	1.00%
Expected life (in years)	6 years 3 months
Risk-free rate	2.10%

Equity Compensation and Rela140

Equity Compensation and Related Plans (Detail textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period under Plan	4 years
Maximum exercisable period	10 years
Additional awards granted under Plan	2,180,000
Compensation expense	$ 2,280,000	$ 1,450,000	$ 1,200,000
Deferred income tax expense (benefit)	59,727,000	$ 38,296,000	$ 38,226,000
Weighted average grant date fair value, granted			$ 9.49
Unrecognized compensation cost related to nonvested stock options	$ 9,800,000
Weighted average period over which compensation cost is expected to be recognized	2 years 8 months 27 days
Aggregate grant date fair value of options and restricted stock that vested during the period	$ 4,220,000
Shares issued in connection with DRIP	4,044	2,916	191
Shares purchased by United's 401(k) retirement plan	17,373
Discount offered to employees under United has an Employee Stock Purchase Program (ESPP) to purchase shares of common stock	10.00%	10.00%	5.00%
Stock issued during period shares employee stock pension plan	16,456	14,213	10,506
Common stock issuable shares under deferred compensation plan	519,874	458,953
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 30,000	$ 35,000	$ 15,000
Deferred income tax expense (benefit)	12,000	14,000	6,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	4,470,000	$ 4,370,000	$ 4,290,000
Total intrinsic value of restricted stock	$ 20,500,000

Assets and Liabilities Measu141

Assets and Liabilities Measured at Fair Value (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Level 1
Assets:
Assets, fair value	$ 173,777	$ 172,156
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	4,161	3,450
Level 1 | Deferred compensation plan liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	4,161	3,450
Level 1 | Derivative financial instruments liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value
Level 1 | U.S. Treasuries
Assets:
Assets, fair value	169,616	168,706
Level 1 | U.S. Agencies
Assets:
Assets, fair value
Level 1 | State and political subdivisions
Assets:
Assets, fair value
Level 1 | Mortgage-backed securities
Assets:
Assets, fair value
Level 1 | Corporate bonds
Assets:
Assets, fair value
Level 1 | Asset-backed securities
Assets:
Assets, fair value
Level 1 | Other
Assets:
Assets, fair value
Level 1 | Mortgage loans held for sale
Assets:
Assets, fair value
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value
Level 1 | Deferred compensation plan assets
Assets:
Assets, fair value	4,161	3,450
Level 1 | Servicing rights for government guaranteed loans
Assets:
Assets, fair value
Level 1 | Derivative financial instruments assets
Assets:
Assets, fair value
Level 2
Assets:
Assets, fair value	2,301,949	2,132,719
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	11,301	13,031
Level 2 | Deferred compensation plan liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value
Level 2 | Derivative financial instruments liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	11,301	13,031
Level 2 | U.S. Treasuries
Assets:
Assets, fair value
Level 2 | U.S. Agencies
Assets:
Assets, fair value	20,820	112,340
Level 2 | State and political subdivisions
Assets:
Assets, fair value	74,177	56,268
Level 2 | Mortgage-backed securities
Assets:
Assets, fair value	1,391,682	1,113,118
Level 2 | Corporate bonds
Assets:
Assets, fair value	304,717	305,276
Level 2 | Asset-backed securities
Assets:
Assets, fair value	469,569	533,242
Level 2 | Other
Assets:
Assets, fair value	1,182	1,811
Level 2 | Mortgage loans held for sale
Assets:
Assets, fair value	27,891
Level 2 | Deferred compensation plan assets
Assets:
Assets, fair value
Level 2 | Servicing rights for government guaranteed loans
Assets:
Assets, fair value
Level 2 | Derivative financial instruments assets
Assets:
Assets, fair value	11,911	10,664
Level 3
Assets:
Assets, fair value	18,204	13,880
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	16,347	15,794
Level 3 | Deferred compensation plan liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value
Level 3 | Derivative financial instruments liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	16,347	15,794
Level 3 | U.S. Treasuries
Assets:
Assets, fair value
Level 3 | U.S. Agencies
Assets:
Assets, fair value
Level 3 | State and political subdivisions
Assets:
Assets, fair value
Level 3 | Mortgage-backed securities
Assets:
Assets, fair value
Level 3 | Corporate bonds
Assets:
Assets, fair value	675	750
Level 3 | Asset-backed securities
Assets:
Assets, fair value
Level 3 | Other
Assets:
Assets, fair value
Level 3 | Mortgage loans held for sale
Assets:
Assets, fair value
Level 3 | Deferred compensation plan assets
Assets:
Assets, fair value
Level 3 | Servicing rights for government guaranteed loans
Assets:
Assets, fair value	5,752	3,712
Level 3 | Derivative financial instruments assets
Assets:
Assets, fair value	11,777	9,418
Total
Assets:
Assets, fair value	2,493,930	2,318,755
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	31,809	32,275
Total | Deferred compensation plan liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	4,161	3,450
Total | Derivative financial instruments liability
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, fair value	27,648	28,825
Total | U.S. Treasuries
Assets:
Assets, fair value	169,616	168,706
Total | U.S. Agencies
Assets:
Assets, fair value	20,820	112,340
Total | State and political subdivisions
Assets:
Assets, fair value	74,177	56,268
Total | Mortgage-backed securities
Assets:
Assets, fair value	1,391,682	1,113,118
Total | Corporate bonds
Assets:
Assets, fair value	305,392	306,026
Total | Asset-backed securities
Assets:
Assets, fair value	469,569	533,242
Total | Other
Assets:
Assets, fair value	1,182	1,811
Total | Mortgage loans held for sale
Assets:
Assets, fair value	27,891
Total | Deferred compensation plan assets
Assets:
Assets, fair value	4,161	3,450
Total | Servicing rights for government guaranteed loans
Assets:
Assets, fair value	5,752	3,712
Total | Derivative financial instruments assets
Assets:
Assets, fair value	$ 23,688	$ 20,082

Assets and Liabilities Measu142

Assets and Liabilities Measured at Fair Value (Details 1) - Recurring - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 9,418	$ 12,262
Business combinations		286
Additions		311
Sales and settlements	(509)	(409)
Other comprehensive income
Amounts included in earnings - fair value adjustments	2,868	(3,032)
Transfers between valuation levels, net			12,262
Balance at end of period	11,777	9,418	12,262
Derivative Liability
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	15,794	18,979
Business combinations
Additions	17
Sales and settlements	(1,001)
Other comprehensive income
Amounts included in earnings - fair value adjustments	1,537	(3,185)
Transfers between valuation levels, net			18,979
Balance at end of period	16,347	15,794	18,979
Servicing rights for government guaranteed loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	3,712	2,551
Business combinations		137	2,133
Additions	2,723	1,699	832
Sales and settlements	(393)	(353)	(152)
Other comprehensive income
Amounts included in earnings - fair value adjustments	(290)	(322)	(262)
Transfers between valuation levels, net
Balance at end of period	5,752	3,712	2,551
Securities Available-for-Sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	750	750	350
Business combinations
Additions
Sales and settlements
Other comprehensive income	(75)		400
Amounts included in earnings - fair value adjustments
Transfers between valuation levels, net
Balance at end of period	$ 675	$ 750	$ 750

Assets and Liabilities Measu143

Assets and Liabilities Measured at Fair Value (Details 2) - Recurring - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 18,204	$ 13,880
Liabilities, fair value	16,347	15,794
Servicing rights for government guaranteed loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 5,752	$ 3,712
ValuationTechnique	Discounted cash flow	Discounted cash flow
Unobservable Inputs	Discount rate Prepayment rate	Discount rate Prepayment rate
Servicing rights for government guaranteed loans | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	11.00%	11.80%
Prepayment Rate	7.12%	6.95%
Corporate bonds
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 675	$ 750
ValuationTechnique	Indicative bid provided by a broker	Indicative bid provided by a broker
Unobservable Inputs	Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company	Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company
Derivative assets - mortgage
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 1,552	$ 188
ValuationTechnique	Internal model	Internal model
Unobservable Inputs	Pull through rate	Pull through rate
Derivative assets - mortgage | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Pull through rate	80.00%	85.00%
Derivative assets - other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value	$ 10,225	$ 9,230
ValuationTechnique	Dealer priced	Dealer priced
Unobservable Inputs	Dealer priced	Dealer priced
Derivative liabilities - risk participations
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, fair value	$ 26
ValuationTechnique	Internal model	Internal model
Unobservable Inputs	Probable exposure rate Probability of default rate	Probable exposure rate Probability of default rate
Derivative liabilities - risk participations | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probable exposure rate	0.35%
Probability of default rate	1.80%
Derivative liabilities - other
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, fair value	$ 16,321	$ 15,794
ValuationTechnique	Dealer priced	Dealer priced
Unobservable Inputs	Dealer priced	Dealer priced

Assets and Liabilities Measu144

Assets and Liabilities Measured at Fair Value (Details 3) - Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Total
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 7,179	$ 7,589
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 7,179	$ 7,589

Assets and Liabilities Measu145

Assets and Liabilities Measured at Fair Value (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Securities held to maturity	$ 333,170	$ 371,658
Mortgage loans held for sale	27,891	0
Level 1
Assets:
Securities held to maturity
Loans, net
Mortgage loans held for sale
Residential mortgage servicing rights
Liabilities:
Deposits
Federal Home Loan Bank advances
Long-term debt
Level 2
Assets:
Securities held to maturity	333,170	371,658
Loans, net
Mortgage loans held for sale	2,018	24,660
Residential mortgage servicing rights
Liabilities:
Deposits	8,635,811	7,881,109
Federal Home Loan Bank advances	709,174	430,119
Long-term debt
Level 3
Assets:
Securities held to maturity
Loans, net	6,824,229	5,840,554
Mortgage loans held for sale
Residential mortgage servicing rights	5,175	3,521
Liabilities:
Deposits
Federal Home Loan Bank advances
Long-term debt	175,750	166,668
Carrying Amount
Assets:
Securities held to maturity	329,843	364,696
Loans, net	6,859,214	5,926,993
Mortgage loans held for sale	1,987	24,231
Residential mortgage servicing rights	4,372	3,370
Liabilities:
Deposits	8,637,558	7,873,193
Federal Home Loan Bank advances	709,209	430,125
Long-term debt	175,078	163,836
Total
Assets:
Securities held to maturity	333,170	371,658
Loans, net	6,824,229	5,840,554
Mortgage loans held for sale	2,018	24,660
Residential mortgage servicing rights	5,175	3,521
Liabilities:
Deposits	8,635,811	7,881,109
Federal Home Loan Bank advances	709,174	430,119
Long-term debt	$ 175,750	$ 166,668

Assets and Liabilities Measu146

Assets and Liabilities Measured at Fair Value (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value [Abstract]
Mortgage loans held for sale, at fair value	$ 27,891,000	$ 0
Mortgage loans held for sale outstanding principal balance	27,600,000
Changes in fair value of loans sale outstanding principal balance	$ 322,000
Percentage of written down in appraisal value of nonaccrual impaired loans	80.00%
Maximum remaining maturity of financial instruments having no defined maturity	180 days

Condensed Financial Statemen147

Condensed Financial Statements of United Community Banks Inc. (Parent Only) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Operations
Shared service fees from subsidiaries	$ 42,113	$ 36,825	$ 33,073
Other	16,485	9,834	7,114
Total income	404,281	326,252	269,935
Interest expense	25,236	21,109	25,551
Other expense	23,691	20,213	14,204
Total expenses	241,289	211,238	162,865
Income tax benefit	62,336	43,436	39,450
Income before equity in undistributed earnings of subsidiaries	162,992	115,014	107,070
Net income	100,656	71,578	67,620
Parent
Statement of Operations
Dividends from bank	41,500	77,500	129,000
Dividends from other subsidiaries		3,500	3,000
Shared service fees from subsidiaries	8,476	7,628	8,057
Other	685	123	424
Total income	50,661	88,751	140,481
Interest expense	11,209	10,385	11,550
Other expense	11,380	11,185	9,868
Total expenses	22,589	21,570	21,418
Income tax benefit	6,717	1,709	2,357
Income before equity in undistributed earnings of subsidiaries	34,789	68,890	121,420
Equity in undistributed earnings of subsidiaries	65,867	2,688	(53,800)
Net income	$ 100,656	$ 71,578	$ 67,620

Condensed Financial Statemen148

Condensed Financial Statements of United Community Banks Inc. (Parent Only) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash	$ 217,348	$ 240,363
Other assets	144,189	94,075
Total assets	10,708,655	9,616,428
Liabilities and Shareholders' Equity
Long-term debt	175,078	163,836
Total liabilities	9,632,920	8,598,143
Shareholders' equity	1,075,735	1,018,285	$ 739,577	$ 795,715
Total liabilities and shareholders' equity	10,708,655	9,616,428
Parent
Assets
Cash	42,980	50,338
Investment in bank	1,201,868	1,112,496
Investment in other subsidiaries	3,731	2,360
Other assets	17,800	32,730
Total assets	1,266,379	1,197,924
Liabilities and Shareholders' Equity
Long-term debt	175,078	165,620
Other liabilities	15,566	14,019
Total liabilities	190,644	179,639
Shareholders' equity	1,075,735	1,018,285
Total liabilities and shareholders' equity	$ 1,266,379	$ 1,197,924

Condensed Financial Statemen149

Condensed Financial Statements of United Community Banks Inc. (Parent Only) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 100,656	$ 71,578	$ 67,620
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	29,974	22,652	19,952
Loss on prepayment of debt		(1,294)	(4,446)
Investing activities:
Payment for acquisition	(1,912)	(35,497)	31,261
Purchase of available for sale securities	692,983	839,345	603,384
Sales and paydowns of securities available for sale	199,864	353,860	419,201
Financing activities:
Repayment of long-term debt		48,521
Proceeds from issuance of long-term debt		83,924
Proceeds from issuance of common stock, net of offering costs			12,206
Repurchase of outstanding warrant			(12,000)
Retirement of preferred stock	(9,992)		(121,613)
Repurchase of common stock	13,659
Cash dividends on common stock	(15,849)	(14,822)	(1,810)
Net change in cash	(23,015)	47,708	(36,243)
Cash and cash equivalents at beginning of year	240,363	192,655	228,898
Cash and cash equivalents at end of year	217,348	240,363	192,655
Parent
Operating activities:
Net income	100,656	71,578	67,620
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of the subsidiaries	(65,867)	(2,688)	53,800
Depreciation, amortization and accretion	23	26	22
Loss on prepayment of debt		754
Stock-based compensation	4,496	4,403	4,304
Change in assets and liabilities:
Other assets	14,305	515	2,529
Other liabilities	(9,457)	(396)	(9,177)
Net cash provided by operating activities	44,156	74,192	119,098
Investing activities:
Payment for acquisition	(11,209)	(76,893)
Purchases of premises and equipment		(12)	(44)
Purchase of available for sale securities	(1,125)
Sales and paydowns of securities available for sale		250	537
Net cash (used in) provided by investing activities	(12,334)	(76,655)	493
Financing activities:
Repayment of long-term debt		(48,521)
Proceeds from issuance of long-term debt		83,924
Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans	366	303	469
Proceeds from issuance of common stock, net of offering costs			12,206
Repurchase of outstanding warrant			(12,000)
Retirement of preferred stock	(9,992)		(121,613)
Repurchase of common stock	(13,659)
Cash dividends on common stock	(15,849)	(14,822)	(1,810)
Cash dividends on Series B preferred stock			(802)
Cash dividends on Series D preferred stock			(412)
Cash dividends on Series H preferred stock	(46)	(50)
Net cash (used in) provided by financing activities	(39,180)	20,834	(123,962)
Net change in cash	(7,358)	18,371	(4,371)
Cash and cash equivalents at beginning of year	50,338	31,967	36,338
Cash and cash equivalents at end of year	$ 42,980	$ 50,338	$ 31,967