OceanFirst Financial (OCFC) 10-Q 8 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	OCFC
Entity Registrant Name	OCEANFIRST FINANCIAL CORP
Entity Central Index Key	1,004,702
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		48,314,556

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 254,469	$ 109,613
Debt securities available-for-sale, at estimated fair value	100,369	81,581
Debt securities held-to-maturity, net (estimated fair value of $906,989 at June 30, 2018 and $761,660 at December 31, 2017)	922,756	764,062
Equity investments, at estimated fair value	9,539	8,700
Restricted equity investments, at cost	66,981	19,724
Loans receivable, net	5,553,035	3,965,773
Loans held-for-sale	919	241
Interest and dividends receivable	19,669	14,254
Other real estate owned	7,854	8,186
Premises and equipment, net	113,782	101,776
Bank Owned Life Insurance	219,853	134,847
Deferred tax asset	59,283	1,922
Assets held for sale	10,269	4,046
Other assets	40,204	41,895
Core deposit intangible	18,949	8,885
Goodwill	338,972	150,501
Total assets	7,736,903	5,416,006
Liabilities and Stockholders’ Equity
Deposits	5,819,406	4,342,798
Federal Home Loan Bank advances	674,227	288,691
Securities sold under agreements to repurchase with retail customers	62,176	79,668
Other borrowings	99,428	56,519
Advances by borrowers for taxes and insurance	17,773	11,156
Other liabilities	51,325	35,233
Total liabilities	6,724,335	4,814,065
Stockholders’ equity:
Preferred stock, $.01 par value, $1,000 liquidation preference, 5,000,000 shares authorized, no shares issued	0	0
Common stock, $.01 par value, 150,000,000 shares authorized, 48,283,500 shares issued and 48,283,500 and 32,596,893 shares outstanding at June 30, 2018 and December 31, 2017, respectively	482	336
Additional paid-in capital	752,223	354,377
Retained earnings	273,749	271,023
Accumulated other comprehensive loss	(3,654)	(5,349)
Less: Unallocated common stock held by Employee Stock Ownership Plan	(10,232)	(2,479)
Treasury stock, 0 and 969,879 shares at June 30, 2018 and December 31, 2017, respectively	0	(15,967)
Common stock acquired by Deferred Compensation Plan	(84)	(84)
Deferred Compensation Plan Liability	84	84
Total stockholders’ equity	1,012,568	601,941
Total liabilities and stockholders’ equity	$ 7,736,903	$ 5,416,006

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Securities held-to-maturity, net estimated fair value	$ 906,989,000	$ 761,660,000
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference	$ 1,000,000	$ 1,000,000
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	48,283,500	48,283,500
Common stock, shares outstanding	48,283,500	32,596,893
Treasury stock, shares	0	969,879

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans	$ 63,135	$ 42,608	$ 119,732	$ 84,350
Mortgage-backed securities	4,297	2,791	7,982	5,451
Debt securities, equity investments and other	2,646	1,480	5,200	3,092
Total interest income	70,078	46,879	132,914	92,893
Interest expense:
Deposits	5,247	2,914	9,711	5,695
Borrowed funds	3,384	1,791	6,046	3,541
Total interest expense	8,631	4,705	15,757	9,236
Net interest income	61,447	42,174	117,157	83,657
Provision for loan losses	706	1,165	2,077	1,865
Net interest income after provision for loan losses	60,741	41,009	115,080	81,792
Other income:
Bankcard services revenue	2,373	1,837	4,292	3,416
Net gain on sales of loans	6	15	623	57
Net unrealized loss on equity investments	(71)		(212)	0
Net (loss) income from other real estate operations	(981)	105	(1,393)	(628)
Income from Bank Owned Life Insurance	1,335	783	2,476	1,555
Other	486	10	1,044	23
Total other income	8,883	6,973	17,794	12,969
Operating expenses:
Compensation and employee benefits	23,244	15,328	44,495	31,466
Occupancy	4,572	2,641	9,139	5,409
Equipment	2,034	1,703	3,937	3,400
Marketing	893	730	1,454	1,470
Federal deposit insurance	1,000	705	1,930	1,366
Data processing	3,667	2,046	6,843	4,442
Check card processing	1,116	815	2,105	1,768
Professional fees	1,397	1,095	2,680	2,055
Other operating expense	3,546	2,951	6,561	5,595
Amortization of core deposit intangible	1,001	513	1,834	1,037
Branch consolidation expense	1,719	5,451	1,544	5,484
Merger related expenses	6,715	3,155	25,200	4,602
Total operating expenses	50,904	37,133	107,722	68,094
Income before provision for income taxes	18,720	10,849	25,152	26,667
Provision for income taxes	3,018	3,170	4,023	6,969
Net income	$ 15,702	$ 7,679	$ 21,129	$ 19,698
Basic earnings per share (in dollars per share)	$ 0.33	$ 0.24	$ 0.46	$ 0.62
Diluted earnings per share (in dollars per share)	$ 0.32	$ 0.23	$ 0.45	$ 0.59
Average basic shares outstanding (in usd per share)	47,718	32,122	45,805	32,014
Average diluted shares outstanding (in usd per share)	48,704	33,138	46,786	33,111
Wealth management revenue
Other income:
Other income	$ 595	$ 565	$ 1,148	$ 1,081
Fees and service charges
Other income:
Other income	$ 5,140	$ 3,658	$ 9,816	$ 7,465

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 15,702	$ 7,679	$ 21,129	$ 19,698
Other comprehensive income:
Unrealized (loss) gain on debt securities (net of tax benefit of $74 and $159 in 2018, and net of tax expense of $15 and $58 in 2017, respectively)	(272)	22	(593)	84
Accretion of unrealized loss on debt securities reclassified to held-to-maturity (net of tax expense of $460 and $518 in 2018, and net of tax expense of $128 and $244 in 2017, respectively)	1,730	185	1,946	353
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	194	0	195	0
Total comprehensive income	$ 17,354	$ 7,886	$ 22,677	$ 20,135

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on securities, tax expense (benefit)	$ 74	$ 159	$ 15	$ 58
Accretion of unrealized loss on securities reclassified to held-to-maturity, tax expense	460	518	128	244
Reclassification adjustment for losses included in net income, tax benefit	$ 52	$ 53	$ 0	$ 0

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Employee Stock Ownership Plan	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Common Stock Acquired by Deferred Compensation Plan	Deferred Compensation Plan Liability
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of adopting Accounting Standards Update (ASU) | Accounting Standards Update 2016-09	$ 0			$ (11,129)	$ 11,129
Beginning Balance at Dec. 31, 2016	571,903	$ (2,761)	$ 336	364,433	238,192	$ (5,749)	$ (22,548)	$ (313)	$ 313
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19,698				19,698
Other comprehensive income, net of tax	437					437
Stock awards	1,204			1,204
Treasury stock allocated to restricted stock plan	0			(1,544)	747		797
Allocation of ESOP stock	473	141		332
Cash dividend	(9,557)				(9,557)
Exercise of stock options	3,031				(1,739)		4,770
Sale of stock for the deferred compensation plan								137	(137)
Ending Balance at Jun. 30, 2017	587,189	(2,620)	336	353,296	258,470	(5,312)	(16,981)	(176)	176
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of adopting Accounting Standards Update (ASU) | Accounting Standards Update 2016-01	0			0	(147)	147
Beginning Balance at Dec. 31, 2017	601,941	(2,479)	$ 336	354,377	271,023	(5,349)	(15,967)	(84)	84
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,129				21,129
Other comprehensive income, net of tax	1,548					1,548
Stock awards	1,787			1,785
Acquisition of common stock by ESOP	(8,400)	(8,400)
Allocation of ESOP stock	966	647		319
Cash dividend	(14,274)				(14,274)
Exercise of stock options (in shares)			3,000
Exercise of stock options	$ 5,317			9,094	(3,982)		202
Acquisition of Sun Bancorp Inc. (shares)	292,592		141,000
Acquisition of Sun Bancorp Inc.	$ 402,554			386,648			15,765
Ending Balance at Jun. 30, 2018	$ 1,012,568	$ (10,232)	$ 482	$ 752,223	$ 273,749	$ (3,654)	$ 0	$ (84)	$ 84

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Acquisition of shares of common stock	292,592
Retained Earnings
Cash dividend per share	$ 0.30	$ 0.30

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 21,129	$ 19,698
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	4,583	3,111
Allocation of ESOP stock	966	473
Stock awards	1,787	1,204
Net excess tax benefit on stock compensation	(572)	(1,543)
Amortization of servicing asset	72	47
Net premium amortization in excess of discount accretion on securities	2,065	1,190
Net amortization of deferred costs on borrowings	131	64
Amortization of core deposit intangible	1,834	1,037
Net accretion of purchase accounting adjustments	(8,804)	(4,061)
Net amortization of deferred costs and discounts on loans	295	172
Provision for loan losses	2,077	1,865
Net loss on sale of other real estate owned	689	379
Write down of fixed assets held for sale to net realizable value	786	4,982
Net (gain) loss on sale of fixed assets	(27)	7
Net unrealized loss on equity securities	212	0
Net gain on sales of loans	(623)	(57)
Proceeds from sales of mortgage loans held for sale	673	2,830
Mortgage loans originated for sale	(1,342)	(1,390)
Increase in value of Bank Owned Life Insurance	(2,476)	(1,555)
Net gain on sale of assets held for sale	(1,166)	0
Decrease (increase) in interest and dividends receivable	206	(1,047)
Decrease in other assets	8,092	3,754
Increase (decrease) in other liabilities	3,622	(961)
Total adjustments	13,080	10,501
Net cash provided by operating activities	34,209	30,199
Cash flows from investing activities:
Net decrease (increase) in loans receivable	52,970	(48,758)
Proceeds from sale of under performing loans	4,294	0
Purchase of loans receivable	(121,690)	(16,627)
Purchase of debt investment securities available-for-sale	(28,010)	(49,812)
Purchase of debt investment securities held-to-maturity	(4,017)	(77,144)
Purchase of debt mortgage-backed securities held-to-maturity	0	(100,015)
Purchase of equity investments	(87)	0
Proceeds from maturities and calls of debt investment securities available-for-sale	13,829	0
Proceeds from maturities and calls of debt investment securities held-to-maturity	34,378	7,375
Proceeds from Bank Owned Life Insurance	2,708	155
Proceeds from the redemption of restricted equity investments	51,324	3,740
Purchases of restricted equity investments	(81,764)	(4,785)
Proceeds from sales of other real estate owned	283	1,500
Proceeds from sales of assets held for sale	4,631	0
Purchases of premises and equipment	(6,549)	(1,991)
Cash consideration paid for acquisition, net of cash received	(3,743)	0
Net cash used in investing activities	(21,573)	(239,001)
Cash flows from financing activities:
Decrease in deposits	(138,626)	(10,331)
Increase in short-term borrowings	325,508	28,114
Proceeds from Federal Home Loan Bank advances	0	5,000
Repayments of Federal Home Loan Bank advances	(41,063)	(957)
Repayments of other borrowings	(192)	0
Increase in advances by borrowers for taxes and insurance	6,617	1,006
Exercise of stock options	5,317	3,031
Payment of employee taxes withheld from stock awards	(2,667)	(1,217)
Acquisition of common stock by ESOP	(8,400)	0
Dividends paid	(14,274)	(9,557)
Net cash provided by financing activities	132,220	15,089
Net increase (decrease) in cash and due from banks	144,856	(193,713)
Cash and due from banks at beginning of period	109,613	301,373
Cash and due from banks at end of period	254,469	107,660
Supplemental Disclosure of Cash Flow Information:
Interest	16,213	9,702
Income taxes	129	2
Non-cash activities:
Accretion of unrealized loss on securities reclassified to held-to-maturity	2,464	565
Net loan charge-offs	1,107	491
Transfer of premises and equipment to assets held-for-sale	9,225	5,754
Transfer of loans receivable to other real estate owned	640	1,317
Non-cash assets acquired:
Securities	254,522	0
Restricted equity investments	16,967	0
Loans	1,517,346	0
Premises and equipment	19,892	0
Accrued interest receivable	5,621	0
Bank Owned Life Insurance	85,238	0
Deferred tax asset	57,943	0
Other assets	5,262	0
Goodwill and other intangible assets, net	200,369	0
Total non-cash assets acquired	2,163,160	0
Liabilities assumed:
Deposits	1,616,073	0
Borrowings	127,747	0
Other liabilities	13,042	0
Total liabilities assumed	1,756,862	0
Mortgage-backed Securities
Cash flows from investing activities:
Principal repayments on debt mortgage-backed securities held-to-maturity	$ 59,870	$ 47,361

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements include the accounts of OceanFirst Financial Corp. (the “Company”) and its wholly-owned subsidiaries, OceanFirst Bank N.A. (the “Bank”) and OceanFirst Risk Management, Inc., and the Bank’s wholly-owned subsidiaries, OceanFirst REIT Holdings, Inc., and its wholly-owned subsidiary OceanFirst Management Corp., and its wholly-owned subsidiary OceanFirst Realty Corp., OceanFirst Services, LLC and its wholly-owned subsidiary OFB Reinsurance, Ltd., 975 Holdings, LLC, Hooper Holdings, LLC., TRREO Holdings LLC, Casaba Real Estate Holdings Corporation, Cohensey Bridge, L.L.C., and Prosperis Financial, LLC. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain amounts previously reported have been reclassified to conform to the current year’s presentation. The interim consolidated financial statements reflect all normal and recurring adjustments which are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. The results of operations for the three and six months ended June 30, 2018 are not necessarily indicative of the results of operations that may be expected for all of 2018 . 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 date of the statements of financial condition and the results of operations for the period. Actual results could differ from these estimates. Certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 .

Business Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Business Combinations	Business Combinations On January 31, 2018, the Company completed its acquisition of Sun Bancorp, Inc. (“Sun”), which after purchase accounting adjustments added $2.0 billion to assets, $1.5 billion to loans, and $1.6 billion to deposits. Total consideration paid for Sun was $474.9 million , including cash consideration of $72.4 million . Sun was merged with and into the Company on the date of acquisition. The acquisition was accounted for under the acquisition method of accounting. Under this method of accounting, the purchase price has been allocated to the respective assets acquired and liabilities assumed based upon their estimated fair values, net of tax. The excess of consideration paid over the estimated fair value of the net assets acquired has been recorded as goodwill. The following table summarizes the estimated fair values of the assets acquired and the liabilities assumed at the date of the acquisition for Sun, net of total consideration paid (in thousands): At January 31, 2018 Estimated Total Purchase Price: $ 474,930 Assets acquired: Cash and cash equivalents $ 68,632 Securities 254,522 Loans 1,517,346 Accrued interest receivable 5,621 Bank Owned Life Insurance 85,238 Deferred tax asset 57,943 Other assets 42,121 Core deposit intangible 11,897 Total assets acquired 2,043,320 Liabilities assumed: Deposits (1,616,073 ) Borrowings (127,747 ) Other liabilities (13,042 ) Total liabilities assumed (1,756,862 ) Net assets acquired $ 286,458 Goodwill recorded in the merger $ 188,472 The calculation of goodwill is subject to change for up to one year after the date of acquisition as additional information relative to the closing date estimates and uncertainties become available. As the Company finalizes its review of the acquired assets and liabilities, certain adjustments to the recorded carrying values may be required. Supplemental Pro Forma Financial Information The following table presents financial information regarding the former Sun operations included in the Consolidated Statements of Income from the date of the acquisition (January 31, 2018) through June 30, 2018 . In addition, the table provides unaudited condensed pro forma financial information assuming the Sun acquisition had been completed as of January 1, 2018 for the six months ended June 30, 2018 and as of January 1, 2017 for the six months ended June 30, 2017 . The table below has been prepared for comparative purposes only and is not necessarily indicative of the actual results that would have been attained had the acquisition occurred as of the beginning of the periods presented, nor is it indicative of future results. Furthermore, the unaudited pro forma information does not reflect management’s estimate of any revenue-enhancing opportunities nor anticipated cost savings or the impact of conforming certain accounting policies of the acquired company to the Company’s policies that may have occurred as a result of the integration and consolidation of Sun’s operations. The pro forma information shown reflects adjustments related to certain purchase accounting fair value adjustments; amortization of core deposit and other intangibles; and related income tax effects. (in thousands) Pro forma Six Months Ended June 30, 2018 Pro forma Six Months Ended June 30, 2017 Net interest income $ 123,538 $ 119,805 Provision for loan losses 2,077 1,034 Non-interest income 18,609 19,400 Non-interest expense 125,005 100,758 Net income $ 11,627 $ 27,481 Fully diluted earnings per share $ 0.24 $ 0.57 Fair Value Measurement of Assets Assumed and Liabilities Assumed The methods used to determine the fair value of the assets acquired and liabilities assumed in the Sun acquisition were as follows. Refer to Note 8, Fair Value Measurements, for a discussion of the fair value hierarchy. Securities The estimated fair values of the securities were calculated utilizing Level 2 inputs. The securities acquired are bought and sold in active markets. Prices for these instruments were obtained through security industry sources that actively participate in the buying and selling of securities. Loans The acquired loan portfolio was valued utilizing Level 3 inputs and included the use of present value techniques employing cash flow estimates and incorporated assumptions that marketplace participants would use in estimating fair values. In instances where reliable market information was not available, the Company used its own assumptions in an effort to determine reasonable fair value. Specifically, the Company utilized three separate fair value analyses which a market participant would employ in estimating the total fair value adjustment. The three separate fair valuation methodologies used were: 1) interest rate loan fair value analysis; 2) general credit fair value adjustment; and 3) specific credit fair value adjustment. To prepare the interest rate fair value analysis, loans were grouped by characteristics such as loan type, term, collateral and rate. Market rates for similar loans were obtained from various external data sources and reviewed by Company management for reasonableness. The average of these rates was used as the fair value interest rate a market participant would utilize. A present value approach was utilized to calculate the interest rate fair value adjustment. The general credit fair value adjustment was calculated using a two part general credit fair value analysis: 1) expected lifetime losses and 2) estimated fair value adjustment for qualitative factors. The expected lifetime losses were calculated using an average of historical losses of the acquired bank. The adjustment related to qualitative factors was impacted by general economic conditions and the risk related to lack of experience with the originator’s underwriting process. To calculate the specific credit fair value adjustment, the Company reviewed the acquired loan portfolio for loans meeting the definition of an impaired loan with deteriorated credit quality. Loans meeting these criteria were reviewed by comparing the contractual cash flows to expected collectible cash flows. The aggregate expected cash flows less the acquisition date fair value resulted in an accretable yield amount which will be recognized over the life of the loans on a level yield basis as an adjustment to yield. Premises and Equipment Fair values are based upon appraisals from independent third parties. In addition to owned properties, Sun operated twenty-one properties subject to lease agreements. Deposits and Core Deposit Premium Core deposit premium represents the value assigned to non-interest-bearing demand deposits, interest-bearing checking, money market and saving accounts acquired as part of the acquisition. The core deposit premium value represents the future economic benefit, including the present value of future tax benefits, of the potential cost saving from acquiring the core deposits as part of an acquisition compared to the cost of alternative funding sources and is valued utilizing Level 2 inputs. The core deposit premium totaled $11.9 million for the acquisition of Sun, and is being amortized over its estimated useful life of approximately 10 years using an accelerated method. Time deposits are not considered to be core deposits as they are assumed to have a low expected average life upon acquisition. The fair value of time deposits represents the present value of the expected contractual payments discounted by market rates for similar time deposits and is valued utilizing Level 2 inputs. Borrowings Fair value estimates are based on discounting contractual cash flows using rates which approximate the rates offered for borrowings of similar remaining maturities.

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share The following reconciles shares outstanding for basic and diluted earnings per share for the three and six months ended June 30, 2018 and 2017 (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 Weighted average shares outstanding 48,156 32,500 46,189 32,410 Less: Unallocated ESOP shares (378 ) (315 ) (334 ) (319 ) Unallocated incentive award shares and shares held by deferred compensation plan (60 ) (63 ) (50 ) (77 ) Average basic shares outstanding 47,718 32,122 45,805 32,014 Add: Effect of dilutive securities: Incentive awards and shares held by deferred compensation plan 986 1,016 981 1,097 Average diluted shares outstanding 48,704 33,138 46,786 33,111 For the three months ended June 30, 2018 and 2017 , antidilutive stock options of 464,000 and 480,000 , respectively, were excluded from earnings per share calculations. For the six months ended June 30, 2018 and 2017 , antidilutive stock options of 464,000 and 200,000 , respectively, were excluded from earnings per share calculations.

Securities

Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost and estimated fair value of debt securities available-for-sale and held-to-maturity at June 30, 2018 , and December 31, 2017 , are as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value At June 30, 2018 Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 100,407 $ 6 $ (1,361 ) $ 99,052 Mortgage-backed securities - FNMA 1,325 — (8 ) 1,317 Total debt securities available-for-sale $ 101,732 $ 6 $ (1,369 ) $ 100,369 Debt securities held-to-maturity: Investment securities: U.S. agency obligations $ 14,972 $ — $ (182 ) $ 14,790 State and municipal obligations 140,037 12 (2,278 ) 137,771 Corporate debt securities 66,805 641 (3,090 ) 64,356 Total investment securities 221,814 653 (5,550 ) 216,917 Mortgage-backed securities: FHLMC 263,312 59 (7,074 ) 256,297 FNMA 303,598 939 (8,085 ) 296,452 GNMA 134,838 189 (2,345 ) 132,682 SBA 4,728 — (87 ) 4,641 Total mortgage-backed securities 706,476 1,187 (17,591 ) 690,072 Total debt securities held-to-maturity $ 928,290 $ 1,840 $ (23,141 ) $ 906,989 Total debt securities $ 1,030,022 $ 1,846 $ (24,510 ) $ 1,007,358 At December 31, 2017 Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 82,378 $ — $ (797 ) $ 81,581 Debt securities held-to-maturity: Investment securities: U.S. agency obligations $ 14,968 $ — $ (65 ) $ 14,903 State and municipal obligations 149,958 219 (1,475 ) 148,702 Corporate debt securities 76,024 312 (3,962 ) 72,374 Total investment securities 240,950 531 (5,502 ) 235,979 Mortgage-backed securities: FHLMC 186,921 151 (2,937 ) 184,135 FNMA 263,103 1,193 (3,000 ) 261,296 GNMA 75,243 64 (928 ) 74,379 SBA 5,843 28 — 5,871 Total mortgage-backed securities 531,110 1,436 (6,865 ) 525,681 Total debt securities held-to-maturity $ 772,060 $ 1,967 $ (12,367 ) $ 761,660 Total debt securities $ 854,438 $ 1,967 $ (13,164 ) $ 843,241 During the third quarter 2013, the Bank transferred $536.0 million of previously designated available-for-sale securities to a held-to-maturity designation at estimated fair value. The securities transferred had an unrealized net loss of $13.3 million at the time of transfer which continues to be reflected in accumulated other comprehensive loss on the consolidated balance sheet, net of subsequent amortization, which is being recognized over the life of the securities. The carrying value of the debt securities held-to-maturity at June 30, 2018 , and December 31, 2017 , is as follows (in thousands): June 30, 2018 December 31, 2017 Amortized cost $ 928,290 $ 772,060 Net loss on date of transfer from available-for-sale (13,347 ) (13,347 ) Accretion of net unrealized loss on securities reclassified as held-to-maturity 7,813 5,349 Carrying value $ 922,756 $ 764,062 Realized gains were $246,000 and $248,000 for the three and six months ended June 30, 2018 , respectively, and there were no realized gains or losses on the sale of securities for the three and six months ended June 30, 2017 . The amortized cost and estimated fair value of investment securities at June 30, 2018 by contractual maturity are shown below (in thousands). Actual maturities may differ from contractual maturities in instances where issuers have the right to call or prepay obligations with or without call or prepayment penalties. At June 30, 2018 , corporate debt with an amortized cost of $53.7 million and estimated fair value of $51.4 million were callable prior to the maturity date. June 30, 2018 Amortized Cost Estimated Fair Value Less than one year $ 50,536 $ 50,361 Due after one year through five years 165,817 163,396 Due after five years through ten years 90,095 86,235 Due after ten years 15,773 15,977 $ 322,221 $ 315,969 Mortgage-backed securities are excluded from the above table since their effective lives are expected to be shorter than the contractual maturity date due to principal prepayments. The estimated fair value of securities pledged as required security for deposits and for other purposes required by law amounted to $552.9 million and $466.4 million , at June 30, 2018 and December 31, 2017 , respectively, including $77.3 million and $58.0 million at June 30, 2018 and December 31, 2017 , respectively, pledged as collateral for reverse repurchase agreements. The estimated fair value and unrealized losses of debt securities available-for-sale and held-to-maturity at June 30, 2018 and December 31, 2017 , segregated by the duration of the unrealized losses, are as follows (in thousands): At June 30, 2018 Less than 12 months 12 months or longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 65,034 $ (765 ) $ 21,953 $ (596 ) $ 86,987 $ (1,361 ) Mortgage-backed securities - FNMA 1,317 (8 ) — — 1,317 (8 ) Total debt securities available-for-sale 66,351 (773 ) 21,953 (596 ) 88,304 (1,369 ) Debt securities held-to-maturity: Investment securities: U.S. agency obligations 14,790 (182 ) — — 14,790 (182 ) State and municipal obligations 103,443 (1,679 ) 16,255 (599 ) 119,698 (2,278 ) Corporate debt securities 6,384 (114 ) 40,055 (2,976 ) 46,439 (3,090 ) Total investment securities 124,617 (1,975 ) 56,310 (3,575 ) 180,927 (5,550 ) Mortgage-backed securities: FHLMC 190,811 (3,936 ) 61,563 (3,138 ) 252,374 (7,074 ) FNMA 183,931 (5,039 ) 58,634 (3,046 ) 242,565 (8,085 ) GNMA 69,051 (1,154 ) 39,052 (1,191 ) 108,103 (2,345 ) SBA 4,641 (87 ) — — 4,641 (87 ) Total mortgage-backed securities 448,434 (10,216 ) 159,249 (7,375 ) 607,683 (17,591 ) Total debt securities held-to-maturity 573,051 (12,191 ) 215,559 (10,950 ) 788,610 (23,141 ) Total debt securities $ 639,402 $ (12,964 ) $ 237,512 $ (11,546 ) $ 876,914 $ (24,510 ) At December 31, 2017 Less than 12 months 12 months or longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 69,375 $ (496 ) $ 12,206 $ (301 ) $ 81,581 $ (797 ) Debt securities held-to-maturity: Investment securities: U.S. agency obligations 14,903 (65 ) — — 14,903 (65 ) State and municipal obligations 104,883 (1,153 ) 14,363 (322 ) 119,246 (1,475 ) Corporate debt securities 4,035 (30 ) 56,106 (3,932 ) 60,141 (3,962 ) Total investment securities 123,821 (1,248 ) 70,469 (4,254 ) 194,290 (5,502 ) Mortgage-backed securities: FHLMC 98,138 (781 ) 68,238 (2,156 ) 166,376 (2,937 ) FNMA 132,982 (1,058 ) 65,060 (1,942 ) 198,042 (3,000 ) GNMA 26,105 (223 ) 45,281 (705 ) 71,386 (928 ) Total mortgage-backed securities 257,225 (2,062 ) 178,579 (4,803 ) 435,804 (6,865 ) Total debt securities held-to-maturity 381,046 (3,310 ) 249,048 (9,057 ) 630,094 (12,367 ) Total debt securities $ 450,421 $ (3,806 ) $ 261,254 $ (9,358 ) $ 711,675 $ (13,164 ) At June 30, 2018 , the amortized cost, estimated fair value and credit rating of the individual corporate debt securities in an unrealized loss position for greater than one year are as follows (in thousands): Security Description Amortized Cost Estimated Fair Value Credit Rating Moody’s/ S&P Chase Capital $ 10,000 $ 9,275 Baa2/BBB- Wells Fargo Capital 5,000 4,700 A1/BBB Huntington Capital 5,000 4,525 Baa2/BB+ Keycorp Capital 5,000 4,625 Baa2/BB+ PNC Capital 5,000 4,666 Baa1/BBB- State Street Capital 5,000 4,675 A3/BBB SunTrust Capital 5,000 4,625 Not Rated/BB+ Southern Company 1,519 1,487 Baa2/BBB+ AT&T Inc. 1,512 1,477 Baa2/BBB $ 43,031 $ 40,055 At June 30, 2018 , the estimated fair value of each of the above corporate debt securities was below cost. The Company concluded that these corporate debt securities were only temporarily impaired at June 30, 2018 . In concluding that the impairments were only temporary, the Company considered several factors in its analysis. The Company noted that each issuer made all the contractually due payments when required. There were no defaults on principal or interest payments and no interest payments were deferred. Based on management’s analysis of each individual security, the issuers appear to have the ability to meet debt service requirements over the life of the security. Furthermore, the Company does not have the intent to sell these corporate debt securities and it is more likely than not that the Company will not be required to sell the securities. Historically, the Company has not utilized securities sales as a source of liquidity. The Company’s long range liquidity plans indicate adequate sources of liquidity outside the securities portfolio. The mortgage-backed securities are issued and guaranteed by either the Federal Home Loan Mortgage Corporation (“FHLMC”), the Federal National Mortgage Association (“FNMA”), the Government National Mortgage Association (“GNMA”), or the Small Business Administration (“SBA”), corporations which are chartered by the United States Government and whose debt obligations are typically rated AA+ by one of the internationally-recognized credit rating services. The Company considers the unrealized losses to be the result of changes in interest rates which over time can have both a positive and negative impact on the estimated fair value of the mortgage-backed securities. The Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell the securities before recovery of their amortized cost. As a result, the Company concluded that these securities were only temporarily impaired at June 30, 2018 .

Loans Receivable, Net

Loans Receivable, Net	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Loans Receivable, Net	Loans Receivable, Net Loans receivable, net at June 30, 2018 and December 31, 2017 consisted of the following (in thousands): June 30, 2018 December 31, 2017 Commercial: Commercial and industrial $ 337,699 $ 187,645 Commercial real estate – owner occupied 716,441 569,497 Commercial real estate – investor 2,068,782 1,186,302 Total commercial 3,122,922 1,943,444 Consumer: Residential real estate 2,010,648 1,748,590 Home equity loans and lines 364,699 281,143 Other consumer 50,952 1,225 Total consumer 2,426,299 2,030,958 5,549,221 3,974,402 Purchased credit impaired (“PCI”) loans 12,995 1,712 Total Loans 5,562,216 3,976,114 Deferred origination costs, net 7,510 5,380 Allowance for loan losses (16,691 ) (15,721 ) Total loans, net $ 5,553,035 $ 3,965,773 At June 30, 2018 and December 31, 2017 , loans in the amount of $18.1 million and $20.9 million , respectively, were three or more months delinquent or in the process of foreclosure and the Company was not accruing interest income on these loans. At June 30, 2018 , there were no loans that were ninety days or greater past due and still accruing interest. Non-accrual loans include both smaller balance homogenous loans that are collectively evaluated for impairment and individually classified impaired loans. The recorded investment in mortgage and consumer loans collateralized by residential real estate, which are in the process of foreclosure, amounted to $2.3 million at June 30, 2018 . The amount of foreclosed residential real estate property held by the Company was $1.0 million at June 30, 2018 . The Company defines an impaired loan as non-accrual commercial real estate, multi-family, land, construction and commercial loans in excess of $250,000 . Impaired loans also include all loans modified as troubled debt restructurings. At June 30, 2018 , the impaired loan portfolio totaled $32.7 million for which there was a specific allocation in the allowance for loan losses of $675,000 . At December 31, 2017 , the impaired loan portfolio totaled $47.0 million for which there was no specific allocation in the allowance for loan losses. The average balance of impaired loans for the three and six months ended June 30, 2018 was $38.4 million and $41.3 million , respectively, and for the three and six months ended June 30, 2017 was $37.9 million and $35.6 million , respectively. An analysis of the allowance for loan losses for the three and six months ended June 30, 2018 and 2017 is as follows (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 Balance at beginning of period $ 16,817 $ 16,151 $ 15,721 $ 15,183 Provision charged to operations 706 1,165 2,077 1,865 Charge-offs (1,284 ) (1,299 ) (1,817 ) (1,504 ) Recoveries 452 540 710 1,013 Balance at end of period $ 16,691 $ 16,557 $ 16,691 $ 16,557 The following table presents an analysis of the allowance for loan losses for the three and six months ended June 30, 2018 and 2017 and the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): Commercial and Industrial Commercial Real Estate – Owner Occupied Commercial Real Estate – Investor Residential Real Estate Consumer Unallocated Total For the three months ended June 30, 2018 Allowance for loan losses: Balance at beginning of period $ 2,251 $ 2,871 $ 8,838 $ 2,138 $ 507 $ 212 $ 16,817 Provision (benefit) charged to operations (186 ) (616 ) 1,166 8 (15 ) 349 706 Charge-offs (13 ) (90 ) (978 ) (157 ) (46 ) — (1,284 ) Recoveries 28 175 32 137 80 — 452 Balance at end of period $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 For the three months ended June 30, 2017 Allowance for loan losses: Balance at beginning of period $ 2,080 $ 3,449 $ 7,361 $ 1,569 $ 1,136 $ 556 $ 16,151 Provision (benefit) charged to operations 160 (342 ) 1,090 639 (244 ) (138 ) 1,165 Charge-offs — (23 ) (84 ) (1,152 ) (40 ) — (1,299 ) Recoveries 13 13 — 436 78 — 540 Balance at end of period $ 2,253 $ 3,097 $ 8,367 $ 1,492 $ 930 $ 418 $ 16,557 For the six months ended June 30, 2018 Allowance for loan losses: Balance at beginning of period $ 1,801 $ 3,175 $ 7,952 $ 1,804 $ 614 $ 375 $ 15,721 Provision (benefit) charged to operations 283 (923 ) 2,045 501 (15 ) 186 2,077 Charge-offs (56 ) (90 ) (1,101 ) (401 ) (169 ) — (1,817 ) Recoveries 52 178 162 222 96 — 710 Balance at end of period $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 For the six months ended June 30, 2017 Allowance for loan losses: Balance at beginning of period $ 2,037 $ 2,999 $ 6,361 $ 2,245 $ 1,110 $ 431 $ 15,183 Provision (benefit) charged to operations (41 ) 48 2,083 12 (224 ) (13 ) 1,865 Charge-offs (88 ) (73 ) (84 ) (1,201 ) (58 ) — (1,504 ) Recoveries 345 123 7 436 102 — 1,013 Balance at end of period $ 2,253 $ 3,097 $ 8,367 $ 1,492 $ 930 $ 418 $ 16,557 June 30, 2018 Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 675 $ — $ — $ — $ — $ — $ 675 Collectively evaluated for impairment 1,405 2,340 9,058 2,126 526 561 16,016 Total ending allowance balance $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 Loans: Loans individually evaluated for impairment $ 1,698 $ 5,521 $ 11,622 $ 11,028 $ 2,874 $ — $ 32,743 Loans collectively evaluated for impairment 336,001 710,920 2,057,160 1,999,620 412,777 — 5,516,478 Total ending loan balance $ 337,699 $ 716,441 $ 2,068,782 $ 2,010,648 $ 415,651 $ — $ 5,549,221 Commercial and Industrial Commercial Real Estate – Owner Occupied Commercial Real Estate – Investor Residential Real Estate Consumer Unallocated Total December 31, 2017 Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 1,801 3,175 7,952 1,804 614 375 15,721 Total ending allowance balance $ 1,801 $ 3,175 $ 7,952 $ 1,804 $ 614 $ 375 $ 15,721 Loans: Loans individually evaluated for impairment $ 864 $ 15,132 $ 17,923 $ 10,605 $ 2,464 $ — $ 46,988 Loans collectively evaluated for impairment 186,781 554,365 1,168,379 1,737,985 279,904 — 3,927,414 Total ending loan balance $ 187,645 $ 569,497 $ 1,186,302 $ 1,748,590 $ 282,368 $ — $ 3,974,402 A summary of impaired loans at June 30, 2018 , and December 31, 2017 , is as follows, excluding PCI loans (in thousands): June 30, 2018 December 31, 2017 Impaired loans with no allocated allowance for loan losses $ 31,271 $ 46,988 Impaired loans with allocated allowance for loan losses 1,472 — $ 32,743 $ 46,988 Amount of the allowance for loan losses allocated $ 675 $ — At June 30, 2018 , impaired loans included troubled debt restructured (“TDR”) loans of $28.5 million , of which $24.3 million were performing in accordance with their restructured terms for a minimum of six months and were accruing interest. At December 31, 2017 , impaired loans included TDR loans of $42.1 million , of which $33.3 million were performing in accordance with their restructured terms for a minimum of six months and were accruing interest. The summary of loans individually evaluated for impairment by loan portfolio segment as of June 30, 2018 , and December 31, 2017 and for the three and six months ended June 30, 2018 and 2017 , is as follows, excluding PCI loans (in thousands): Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated As of June 30, 2018 With no related allowance recorded: Commercial and industrial $ 239 $ 226 $ — Commercial real estate – owner occupied 5,532 5,521 — Commercial real estate – investor 14,024 11,622 — Residential real estate 11,418 11,028 — Consumer 3,241 2,874 — $ 34,454 $ 31,271 $ — With an allowance recorded: Commercial and industrial $ 1,472 $ 1,472 $ 675 Commercial real estate – owner occupied — — — Commercial real estate – investor — — — Residential real estate — — — Consumer — — — $ 1,472 $ 1,472 $ 675 As of December 31, 2017 With no related allowance recorded: Commercial and industrial $ 895 $ 864 $ — Commercial real estate – owner occupied 15,832 15,132 — Commercial real estate – investor 19,457 17,923 — Residential real estate 10,951 10,605 — Consumer 2,941 2,464 — $ 50,076 $ 46,988 $ — With an allowance recorded: Commercial and industrial $ — $ — $ — Commercial real estate – owner occupied — — — Commercial real estate – investor — — — Residential real estate — — — Consumer — — — $ — $ — $ — Three Months Ended June 30, 2018 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ 512 $ — $ 596 $ 19 Commercial real estate – owner occupied 7,666 36 10,830 24 Commercial real estate – investor 13,177 48 5,655 221 Residential real estate 11,217 112 10,929 187 Consumer 2,682 46 2,375 42 $ 35,254 $ 242 $ 30,385 $ 493 With an allowance recorded: Commercial and industrial $ 1,472 $ — $ — $ — Commercial real estate – owner occupied — — — — Commercial real estate – investor 1,677 — 5,249 13 Residential real estate — — 2,156 — Consumer — — 142 — $ 3,149 $ — $ 7,547 $ 13 Six Months Ended June 30, 2018 2017 Average Interest Average Interest With no related allowance recorded: Commercial and industrial $ 629 $ 16 $ 486 $ 24 Commercial real estate – owner occupied 10,155 151 10,927 185 Commercial real estate – investor 14,759 202 4,402 247 Residential real estate 11,013 237 10,517 273 Consumer 2,609 83 2,332 70 $ 39,165 $ 689 $ 28,664 $ 799 With an allowance recorded: Commercial and industrial $ 981 $ — $ — $ — Commercial real estate – owner occupied — — — — Commercial real estate – investor 1,118 — 4,130 68 Residential real estate — — 2,641 62 Consumer — — 198 6 $ 2,099 $ — $ 6,969 $ 136 The following table presents the recorded investment in non-accrual loans by loan portfolio segment as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): June 30, 2018 December 31, 2017 Commercial and industrial $ 1,947 $ 503 Commercial real estate – owner occupied 522 5,962 Commercial real estate – investor 6,364 8,281 Residential real estate 6,858 4,190 Consumer 2,415 1,929 $ 18,106 $ 20,865 The following table presents the aging of the recorded investment in past due loans as of June 30, 2018 and December 31, 2017 by loan portfolio segment, excluding PCI loans (in thousands): 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Total Past Due Loans Not Past Due Total June 30, 2018 Commercial and industrial $ 651 $ 40 $ 1,674 $ 2,365 $ 335,334 $ 337,699 Commercial real estate – owner occupied 3,125 — 197 3,322 713,119 716,441 Commercial real estate – investor 12,074 728 3,503 16,305 2,052,477 2,068,782 Residential real estate 15,253 3,673 3,077 22,003 1,988,645 2,010,648 Consumer 1,714 905 1,940 4,559 411,092 415,651 $ 32,817 $ 5,346 $ 10,391 $ 48,554 $ 5,500,667 $ 5,549,221 December 31, 2017 Commercial and industrial $ 2,694 $ 36 $ 503 $ 3,233 $ 184,412 $ 187,645 Commercial real estate – owner occupied 222 — 5,402 5,624 563,873 569,497 Commercial real estate – investor 135 1,426 4,507 6,068 1,180,234 1,186,302 Residential real estate 13,197 2,351 3,372 18,920 1,729,670 1,748,590 Consumer 1,067 310 1,687 3,064 279,304 282,368 $ 17,315 $ 4,123 $ 15,471 $ 36,909 $ 3,937,493 $ 3,974,402 The Company categorizes all commercial and commercial real estate loans, except for small business 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 and current economic trends, among other factors. The Company uses the following definitions for risk ratings: Pass : Loans classified as Pass are well protected by the paying capacity and net worth of the borrower. Special Mention : Loans classified as Special Mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the Bank’s credit position at some future date. Substandard : Loans classified as Substandard are inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Doubtful : Loans classified as Doubtful have all the weaknesses inherent in those classified as Substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. As of June 30, 2018 and December 31, 2017 , and based on the most recent analysis performed, the risk category of loans by loan portfolio segment follows, excluding PCI loans (in thousands) is as follows: Pass Special Mention Substandard Doubtful Total June 30, 2018 Commercial and industrial $ 331,369 $ 2,520 $ 3,135 $ 675 $ 337,699 Commercial real estate – owner occupied 697,195 3,651 15,595 — 716,441 Commercial real estate – investor 2,025,639 22,949 20,194 — 2,068,782 $ 3,054,203 $ 29,120 $ 38,924 $ 675 $ 3,122,922 December 31, 2017 Commercial and industrial $ 181,438 $ 3,153 $ 3,054 $ — $ 187,645 Commercial real estate – owner occupied 546,569 4,337 18,591 — 569,497 Commercial real estate – investor 1,146,630 14,644 25,028 — 1,186,302 $ 1,874,637 $ 22,134 $ 46,673 $ — $ 1,943,444 For residential and consumer loan classes, the Company evaluates credit quality based on the aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in residential and consumer loans based on payment activity as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): Residential Consumer June 30, 2018 Performing $ 2,003,790 $ 413,236 Non-performing 6,858 2,415 $ 2,010,648 $ 415,651 December 31, 2017 Performing $ 1,744,400 $ 280,439 Non-performing 4,190 1,929 $ 1,748,590 $ 282,368 The Company classifies certain loans as troubled debt restructurings when credit terms to a borrower in financial difficulty are modified. The modifications may include a reduction in rate, an extension in term, the capitalization of past due amounts and/or the restructuring of scheduled principal payments. One-to-four family and consumer loans where the borrower’s debt is discharged in a bankruptcy filing are also considered troubled debt restructurings. For these loans, the Bank retains its security interest in the real estate collateral. Included in the non-accrual loan total at June 30, 2018 , and December 31, 2017 , were $4.2 million and $8.8 million , respectively, of troubled debt restructurings. At June 30, 2018 and December 31, 2017 , the Company had no specific reserves allocated to loans that are classified as troubled debt restructurings. Non-accrual loans which become troubled debt restructurings are generally returned to accrual status after six months of performance. In addition to the troubled debt restructurings included in non-accrual loans, the Company also has loans classified as accruing troubled debt restructurings at June 30, 2018 , and December 31, 2017 , which totaled $24.3 million and $33.3 million , respectively. Troubled debt restructurings are considered in the allowance for loan losses similar to other impaired loans. The following table presents information about troubled debt restructurings which occurred during the three and six months ended June 30, 2018 and 2017 , and troubled debt restructurings modified within the previous year and which defaulted during the three and six months ended June 30, 2018 and 2017 (dollars in thousands): Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Three months ended June 30, 2018 Troubled Debt Restructurings: Commercial and industrial 1 $ 259 $ 259 Commercial real estate – investor 1 1,045 1,045 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Post-modification Six months ended June 30, 2018 Troubled Debt Restructurings: Commercial and industrial 2 $ 496 $ 502 Commercial real estate – investor 2 1,224 1,225 Residential real estate 2 257 270 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Three Months Ended June 30, 2017 Troubled Debt Restructurings: Commercial and industrial 1 $ 665 $ 665 Commercial real estate - owner occupied 1 966 966 Commercial real estate – investor 2 5,036 5,011 Residential real estate 2 658 658 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Six months ended June 30, 2017 Troubled Debt Restructurings: Commercial and industrial 1 $ 665 $ 665 Commercial real estate - owner occupied 3 2,609 2,609 Commercial real estate – investor 3 5,662 5,784 Residential real estate 4 1,026 999 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None As part of the Sun acquisition, PCI loans were acquired at a discount primarily due to deteriorated credit quality. PCI loans are accounted for at fair value, based upon the present value of expected future cash flows, with no related allowance for loan losses. The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired from Sun at January 31, 2018 (in thousands): Sun January 31, 2018 Contractually required principal and interest $ 22,556 Contractual cash flows not expected to be collected (non-accretable discount) (6,115 ) Expected cash flows to be collected at acquisition 16,441 Interest component of expected cash flows (accretable yield) (3,535 ) Fair value of acquired loans $ 12,906 The following table summarizes the changes in accretable yield for PCI loans during the three and six months ended June 30, 2018 and 2017 (in thousands): Three Months Ended June 30, 2018 Six Months Ended June 30, 2018 Three Months Ended June 30, 2017 Six Months Ended June 30, 2017 Beginning balance $ 3,492 $ 161 $ 693 $ 749 Acquisition — 3,535 — — Accretion (869 ) (1,091 ) (152 ) (314 ) Reclassification from non-accretable difference 566 584 924 1,030 Ending balance $ 3,189 $ 3,189 $ 1,465 $ 1,465

Deposits

Deposits	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Deposits	Deposits The major types of deposits at June 30, 2018 and December 31, 2017 were as follows (in thousands): Type of Account June 30, 2018 December 31, 2017 Non-interest-bearing $ 1,195,980 $ 756,513 Interest-bearing checking 2,265,971 1,954,358 Money market deposit 574,269 363,656 Savings 903,777 661,167 Time deposits 879,409 607,104 Total deposits $ 5,819,406 $ 4,342,798 Included in time deposits at June 30, 2018 and December 31, 2017 , is $117.0 million and $84.9 million , respectively, in deposits of $250,000 and over.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” and subsequent related Updates modifies the guidance used to recognize revenue from contracts with customers for transfers of goods or services and transfers of nonfinancial assets, unless those contracts are within the scope of other guidance. The Updates also require new qualitative and quantitative disclosures, including disaggregation of revenues and descriptions of performance obligations. The amendments in this update were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. On January 1, 2018, the Company adopted ASU 2014-09 and all subsequent amendments to the ASU (collectively, “ASC 606”). The majority of the Company’s revenues are not subject to ASC 606, including revenue generated from financial instruments, such as interest and dividend income, including loans and securities, as these activities are subject to other U.S. Generally Accepted Accounting Principles (“GAAP”). Revenue generating activities that are within the scope of ASC 606 are presented within non-interest income and are recognized as revenue as the Company satisfies its obligation to the customer. Descriptions of revenue generating activities that are within the scope of ASC 606, which are presented in the Consolidated Statements of Income as components of other income are as follows: • Bankcard services revenue - The Company generates other non-interest income from Bankcard services, which includes interchange revenue and merchant services revenue. The calculation of the revenue collected is based on customer transactions, which do not have a fixed duration. When there is a transaction, the performance obligation is fulfilled. The Company recognizes revenue per underlying transaction and recognizes the revenue when the performance obligation is satisfied at a point in time. • Wealth management revenue - The Company provides customers with sound financial solutions and comprehensive wealth management products. Wealth management accounts earn minimum annual fees and may earn additional fees and service charges. Fees and service charges from wealth management accounts may include numerous fees such as Bill Pay fees, extraordinary service fees, unique asset fees, and transaction fees. The Company will recognize the fee when received because the Company provided the service to its customer at that time, and has no future performance obligation. Therefore, each month the Company will accrue and recognize the monthly portion of the minimum annual fee as a result of providing advisory services. If a customer utilizes additional services such as a wire transfer or bill pay, or any other advisory service outlined in their respective agreements, the Company will recognize revenue at that time, since there are no future performance obligations during the existing contract. • Fees and service charges - The Company has multiple types of deposit accounts that may earn fees and service charges. Fees and service charges from deposit accounts represent general service fees for monthly account maintenance and activity-or-transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the performance obligation is satisfied, which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are typically received at the time the performance obligations are satisfied. The Company adopted the ASU using the modified retrospective method as of January 1, 2018. The adoption of this ASU did not result in a change to the accounting for any of the in-scope revenue streams; as such no cumulative effect adjustment was recorded on the Company’s consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10) Recognition and Measurement of Financial Assets and Financial Liabilities.” The main objective in developing this new ASU is to enhance the reporting model for financial instruments to provide users of financial statements with more useful information. The update requires equity investments to be measured at fair value with changes in fair value recognized in net income. It simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a quantitative assessment to identify impairment. The amendment eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. It requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Financial assets and financial liabilities are to be presented separately by measurement category and the need for a valuation allowance on a deferred tax asset related to available-for-sale securities should be evaluated with other deferred tax assets. The amendments in this update were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted this ASU in its entirety on January 1, 2018, and has appropriately reflected the changes throughout the Company’s consolidated financial statements. The adoption of this ASU resulted in an impact to retained earnings and other comprehensive income of $147,000 . In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. The Company has begun its evaluation of the amended guidance including the potential impact on its consolidated financial statements. To date, the Company has identified its leased real estate as within the scope of the guidance and continues to evaluate the impact of the guidance, including determining whether other contracts exist that are deemed to be in scope. The Company expects total assets and total liabilities will increase by similar amounts. Further, to date, no guidance has been issued by either the Company’s or the Bank’s primary regulator with respect to how the impact of the amended standard is to be treated for regulatory capital purposes. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model. The new model, referred to as the current expected credit loss (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost, and (2) certain off-balance sheet credit exposures. This includes, but is not limited to, loans, leases, held-to-maturity securities, loan commitments, and financial guarantees. The CECL model does not apply to available-for-sale (“AFS”) debt securities. For AFS debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a result, entities will recognize improvements to estimated credit losses immediately in earnings rather than as interest income over time, as they do today. The ASU also simplifies the accounting model for purchased credit-impaired debt securities and loans. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for loan and lease losses. In addition, entities will need to disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company has begun its evaluation of the amended guidance including the potential impact on its consolidated financial statements. As a result of the required change in approach toward determining estimated credit losses from the current “incurred loss” model to one based on estimated cash flows over a loan’s contractual life, adjusted for prepayments (a “life of loan” model), the Company expects that the new guidance will result in an increase in the allowance for loan losses, particularly for longer duration loan portfolios. The Company also expects that the new guidance may result in an allowance for debt securities. In both cases, the extent of the change is indeterminable at this time as it will be dependent upon portfolio composition and credit quality at the adoption date, as well as economic conditions and forecasts at that time. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805) - Clarifying the Definition of a Business.” This ASU narrows the definition of a business and clarifies that, to be considered a business, the fair value of the gross assets acquired (or disposed of) may not be substantially all concentrated in a single identifiable asset or group of similar assets. In addition, in order to be considered a business, a set of activities and assets must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. This ASU was effective for fiscal years beginning after December 15, 2017; early adoption was permitted on a limited basis. The Company adopted this guidance on January 1, 2018 and it did not have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” This ASU intends to simplify the subsequent measurement of goodwill, eliminating Step 2 from the goodwill impairment test. Instead, an entity should perform its annual goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge by which the carrying amount exceeds the reporting unit’s fair value; however the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The ASU also eliminates the requirement for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment. ASU No. 2017-04 is effective for fiscal years beginning after December 15, 2019; early adoption is permitted for annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of this update will not have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” This ASU requires the amortization of premiums to the earliest call date on debt securities with call features that are explicit, noncontingent and callable at fixed prices and on preset dates. This ASU does not impact securities held as a discount, as the discount continues to be amortized to the contractual maturity. The guidance is effective for fiscal years beginning after December 15, 2018, with early adoption permitted, including adoption in an interim period. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.” The amendments in this ASU was issued to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. As a result, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Current GAAP contains limitations on how an entity can designate the hedged risk in certain cash flow and fair value hedging relationships. To address those current limitations, the amendments in this ASU permit hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. In addition, the amendments in this ASU change the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company does not enter into derivatives that are designated as hedging instruments and as such, the adoption of this ASU is not expected to have an impact on the Company’s consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU was issued to address a narrow-scope financial reporting issue that arose as a result of the enactment of the Tax Cuts and Jobs Act (“Tax Reform”) on December 22, 2017. The objective of ASU 2018-02 is to address the tax effects of items within accumulated other comprehensive income (referred to as “stranded tax effects”) that do not reflect the appropriate tax rate enacted in the Tax Reform. As a result, the ASU 2018-02 allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate. The amount of the reclassification would be the difference between the historical corporate income tax rate of 35 percent and the newly enacted corporate income tax rate of 21 percent. ASU 2018-02 is effective for fiscal years beginning after December 15, 2018, with early adoption permitted, including adoption in an interim period. The amendments in this ASU may be applied retrospectively to each period in which the effect of the change in the U.S. Federal corporate income tax rate in the Tax Reform is recognized. The Company has early adopted ASU 2018-02 for the year ended December 31, 2017, and has elected not to reclassify the income tax effects of the Tax Reform from accumulated other comprehensive loss to retained earnings.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or the most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact. The Company uses valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement costs). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability and developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability and developed based on the best information available in the circumstances. In that regard, a fair value hierarchy has been established for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. Movements within the fair value hierarchy are recognized at the end of the applicable reporting period. There were no transfers between the levels of the fair value hierarchy for the three and six months ended June 30, 2018 . The fair value hierarchy is as follows: Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlations or other means. Level 3 Inputs – Significant unobservable inputs that reflect an entity’s own assumptions that market participants would use in pricing the assets or liabilities. Assets and Liabilities Measured at Fair Value A description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis, that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Debt Securities Available-For-Sale Debt securities classified as available-for-sale are reported at fair value. Fair value for these debt securities is determined using inputs other than quoted prices that are based on market observable information (Level 2). Level 2 debt securities are priced through third-party pricing services or security industry sources that actively participate in the buying and selling of securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing is a mathematical technique used principally to value certain debt securities without relying exclusively on quoted prices for the specific securities, but comparing the debt securities to benchmark or comparable debt securities. Equity Investments Equity investments are reported at fair value. Fair value for these investments is determined using a quoted price in an active market or exchange (Level 1). Interest Rate Swaps The Company’s interest rate swaps, acquired from Sun, are reported at fair value utilizing models provided by an independent, third-party and observable market data. When entering into an interest rate swap agreement, the Company is exposed to fair value changes due to interest rate movements, and also the potential nonperformance of our contract counterparty. Other Real Estate Owned and Impaired Loans Other real estate owned and loans measured for impairment based on the fair value of the underlying collateral are recorded at estimated fair value, less estimated selling costs. Fair value is based on independent appraisals. The following table summarizes financial assets and financial liabilities measured at fair value as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (in thousands): Fair Value Measurements at Reporting Date Using: Total Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs June 30, 2018 Items measured on a recurring basis: Debt securities available-for-sale $ 100,369 $ — $ 100,369 $ — Equity investments 9,539 9,539 — — Interest rate swap asset 369 — 369 — Interest rate swap liability (369 ) — (369 ) — Items measured on a non-recurring basis: Other real estate owned 7,854 — — 7,854 Loans measured for impairment based on the fair value of the underlying collateral 11,832 — — 11,832 December 31, 2017 Items measured on a recurring basis: Debt securities available-for-sale $ 81,581 $ — $ 81,581 $ — Equity investments 8,700 8,700 — — Items measured on a non-recurring basis: Other real estate owned 8,186 — — 8,186 Loans measured for impairment based on the fair value of the underlying collateral 16,496 — — 16,496 Assets and Liabilities Disclosed at Fair Value A description of the valuation methodologies used for assets and liabilities disclosed at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy is set forth below. Cash and Due from Banks For cash and due from banks, the carrying amount approximates fair value. Debt Securities Held-to-Maturity Debt securities classified as held-to-maturity are carried at amortized cost, as the Company has the positive intent and ability to hold these debt securities to maturity. The Company determines the fair value of the debt securities utilizing Level 1, Level 2 and, infrequently, Level 3 inputs. In general, fair value is based upon quoted market prices, where available. Most of the Company’s investment and mortgage-backed securities, however, are fixed income instruments that are not quoted on an exchange, but are bought and sold in active markets. Prices for these instruments are obtained through third-party pricing vendors or security industry sources that actively participate in the buying and selling of debt securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing is a mathematical technique used principally to value certain debt securities without relying exclusively on quoted prices for the specific debt securities, but comparing the debt securities to benchmark or comparable debt securities. Management’s policy is to obtain and review all available documentation from the third party pricing service relating to their fair value determinations, including their methodology and summary of inputs. Management reviews this documentation, makes inquiries of the third-party pricing service and makes a determination as to the level of the valuation inputs. Based on the Company’s review of the available documentation from the third-party pricing service, management concluded that Level 2 inputs were utilized for all securities except for certain state and municipal obligations known as bond anticipation notes (“BANs”) where management utilized Level 3 inputs. Restricted Equity Investments The fair value for Federal Home Loan Bank of New York and Federal Reserve Bank stock is its carrying value since this is the amount for which it could be redeemed. There is no active market for this stock and the Company is required to maintain a minimum investment as stipulated by the respective agencies. Loans Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as residential mortgage, consumer and commercial. Each loan category is further segmented into fixed and adjustable rate interest terms. Fair value of performing and non-performing loans was estimated by discounting the future cash flows, net of estimated prepayments, at a rate for which similar loans would be originated to new borrowers with similar terms. Deposits Other than Time Deposits The fair value of deposits with no stated maturity, such as non-interest-bearing demand deposits, savings, and interest-bearing checking accounts and money market accounts is, by definition, equal to the amount payable on demand. The related insensitivity of the majority of these deposits to interest rate changes creates a significant inherent value which is not reflected in the fair value reported. Time Deposits The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. Securities Sold Under Agreements to Repurchase with Retail Customers Fair value approximates the carrying amount as these borrowings are payable on demand and the interest rate adjusts monthly. Borrowed Funds Fair value estimates are based on discounting contractual cash flows using rates which approximate the rates offered for borrowings of similar remaining maturities. The book value and estimated fair value of the Bank’s significant financial instruments not recorded at fair value as of June 30, 2018 and December 31, 2017 are presented in the following tables (in thousands): Fair Value Measurements at Reporting Date Using: June 30, 2018 Book Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Financial Assets: Cash and due from banks $ 254,469 $ 254,469 $ — $ — Debt securities held-to-maturity 922,756 — 893,814 13,175 Restricted equity investments 66,981 — — 66,981 Loans receivable, net and loans held-for-sale (1) 5,553,954 — — 5,459,399 Financial Liabilities: Deposits other than time deposits 4,939,997 — 4,939,997 — Time deposits 879,409 — 863,981 — Federal Home Loan Bank advances and other borrowings 773,655 — 779,701 — Securities sold under agreements to repurchase with retail customers 62,176 62,176 — — Fair Value Measurements at Reporting Date Using: December 31, 2017 Book Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Financial Assets: Cash and due from banks $ 109,613 $ 109,613 $ — $ — Debt securities held-to-maturity 764,062 — 751,182 10,478 Restricted equity investments 19,724 — — 19,724 Loans receivable, net and loans held-for-sale (1) 3,966,014 — — 3,962,689 Financial Liabilities: Deposits other than time deposits 3,735,694 — 3,735,694 — Time deposits 607,104 — 599,677 — Federal Home Loan Bank advances and other borrowings 345,210 — 341,820 — Securities sold under agreements to repurchase with retail customers 79,668 79,668 — — (1) In accordance with the prospective adoption of ASU 2016-01, the fair value of loans was measured using the exit price notion as of June 30, 2018 . The fair value of loans was measured using the entry price notion as of December 31, 2017 . Limitations 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 any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because a limited market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments and other significant unobservable inputs. 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 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 assets or liabilities include premises and equipment, Bank Owned Life Insurance, deferred tax assets 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.

Derivatives, Hedging Activities

Derivatives, Hedging Activities, and Other Financial Instruments	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Hedging Activities, and Other Financial Instruments	Derivatives, Hedging Activities and Other Financial Instruments As a result of the Sun acquisition, the Company acquired derivative financial instruments which involve, to varying degrees, interest rate, market and credit risk. The Company manages these risks as part of its asset and liability management process and through credit policies and procedures, seeking to minimize counterparty credit risk by establishing credit limits and collateral agreements. The Company utilizes certain derivative financial instruments to enhance its ability to manage interest rate risk that exists as part of its ongoing business operations. The derivative financial instruments acquired by the Company are an economic hedge of a derivative offering to Bank customers. The Company does not use derivative financial instruments for trading purposes. Customer Derivatives – Interest Rate Swaps As a result of the Sun acquisition, the Company acquired interest rate swaps that allow commercial loan customers to effectively convert a variable-rate commercial loan agreement to a fixed-rate commercial loan agreement. Under these agreements, the Company enters into a variable-rate loan agreement with a customer in addition to an interest rate swap agreement, which serves to effectively swap the customer’s variable-rate loan into a fixed-rate loan. The Company then enters into a corresponding swap agreement with a third party in order to economically hedge its exposure through the customer agreement. The interest rate swaps with both the customers and third parties are not designated as hedges under FASB Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging, and are marked to market through earnings. As the interest rate swaps are structured to offset each other, changes to the underlying benchmark interest rates considered in the valuation of these instruments do not result in an impact to earnings; however, there may be fair value adjustments related to credit quality variations between counterparties, which may impact earnings as required by FASB ASC Topic 820, Fair Value Measurements. The Company recognized $0 and $2,000 in other income resulting from fair value adjustments during the three and six months ended June 30, 2018 , respectively. The table below presents the notional and fair value of derivatives not designated as hedging instruments as well as their location on the consolidated statements of financial condition as of June 30, 2018 (in thousands): June 30, 2018 Balance Sheet Location Notional Fair Value Other assets $ 12,530 $ 369 Other liabilities 12,530 369 Credit risk-related Contingent Features As a result of the Sun acquisition, the Company is a party to an International Swaps and Derivatives Association agreement with a third party broker-dealer that requires a minimum dollar transfer amount upon a margin call. This requirement is dependent on certain specified credit measures. The amount of collateral posted with the third party at June 30, 2018 was $1.8 million . The amount of collateral posted with the third party is deemed to be sufficient to collateralize both the fair market value change as well as any additional amounts that may be required as a result of a change in the specified credit measures. The aggregate fair value of all derivative financial instruments in a liability position with credit measure contingencies and entered into with the third party was $369,000 at June 30, 2018 .

Recent Accounting Pronounceme19

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” and subsequent related Updates modifies the guidance used to recognize revenue from contracts with customers for transfers of goods or services and transfers of nonfinancial assets, unless those contracts are within the scope of other guidance. The Updates also require new qualitative and quantitative disclosures, including disaggregation of revenues and descriptions of performance obligations. The amendments in this update were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. On January 1, 2018, the Company adopted ASU 2014-09 and all subsequent amendments to the ASU (collectively, “ASC 606”). The majority of the Company’s revenues are not subject to ASC 606, including revenue generated from financial instruments, such as interest and dividend income, including loans and securities, as these activities are subject to other U.S. Generally Accepted Accounting Principles (“GAAP”). Revenue generating activities that are within the scope of ASC 606 are presented within non-interest income and are recognized as revenue as the Company satisfies its obligation to the customer. Descriptions of revenue generating activities that are within the scope of ASC 606, which are presented in the Consolidated Statements of Income as components of other income are as follows: • Bankcard services revenue - The Company generates other non-interest income from Bankcard services, which includes interchange revenue and merchant services revenue. The calculation of the revenue collected is based on customer transactions, which do not have a fixed duration. When there is a transaction, the performance obligation is fulfilled. The Company recognizes revenue per underlying transaction and recognizes the revenue when the performance obligation is satisfied at a point in time. • Wealth management revenue - The Company provides customers with sound financial solutions and comprehensive wealth management products. Wealth management accounts earn minimum annual fees and may earn additional fees and service charges. Fees and service charges from wealth management accounts may include numerous fees such as Bill Pay fees, extraordinary service fees, unique asset fees, and transaction fees. The Company will recognize the fee when received because the Company provided the service to its customer at that time, and has no future performance obligation. Therefore, each month the Company will accrue and recognize the monthly portion of the minimum annual fee as a result of providing advisory services. If a customer utilizes additional services such as a wire transfer or bill pay, or any other advisory service outlined in their respective agreements, the Company will recognize revenue at that time, since there are no future performance obligations during the existing contract. • Fees and service charges - The Company has multiple types of deposit accounts that may earn fees and service charges. Fees and service charges from deposit accounts represent general service fees for monthly account maintenance and activity-or-transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the performance obligation is satisfied, which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are typically received at the time the performance obligations are satisfied. The Company adopted the ASU using the modified retrospective method as of January 1, 2018. The adoption of this ASU did not result in a change to the accounting for any of the in-scope revenue streams; as such no cumulative effect adjustment was recorded on the Company’s consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10) Recognition and Measurement of Financial Assets and Financial Liabilities.” The main objective in developing this new ASU is to enhance the reporting model for financial instruments to provide users of financial statements with more useful information. The update requires equity investments to be measured at fair value with changes in fair value recognized in net income. It simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a quantitative assessment to identify impairment. The amendment eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. It requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Financial assets and financial liabilities are to be presented separately by measurement category and the need for a valuation allowance on a deferred tax asset related to available-for-sale securities should be evaluated with other deferred tax assets. The amendments in this update were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted this ASU in its entirety on January 1, 2018, and has appropriately reflected the changes throughout the Company’s consolidated financial statements. The adoption of this ASU resulted in an impact to retained earnings and other comprehensive income of $147,000 . In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. The Company has begun its evaluation of the amended guidance including the potential impact on its consolidated financial statements. To date, the Company has identified its leased real estate as within the scope of the guidance and continues to evaluate the impact of the guidance, including determining whether other contracts exist that are deemed to be in scope. The Company expects total assets and total liabilities will increase by similar amounts. Further, to date, no guidance has been issued by either the Company’s or the Bank’s primary regulator with respect to how the impact of the amended standard is to be treated for regulatory capital purposes. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model. The new model, referred to as the current expected credit loss (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost, and (2) certain off-balance sheet credit exposures. This includes, but is not limited to, loans, leases, held-to-maturity securities, loan commitments, and financial guarantees. The CECL model does not apply to available-for-sale (“AFS”) debt securities. For AFS debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a result, entities will recognize improvements to estimated credit losses immediately in earnings rather than as interest income over time, as they do today. The ASU also simplifies the accounting model for purchased credit-impaired debt securities and loans. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for loan and lease losses. In addition, entities will need to disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company has begun its evaluation of the amended guidance including the potential impact on its consolidated financial statements. As a result of the required change in approach toward determining estimated credit losses from the current “incurred loss” model to one based on estimated cash flows over a loan’s contractual life, adjusted for prepayments (a “life of loan” model), the Company expects that the new guidance will result in an increase in the allowance for loan losses, particularly for longer duration loan portfolios. The Company also expects that the new guidance may result in an allowance for debt securities. In both cases, the extent of the change is indeterminable at this time as it will be dependent upon portfolio composition and credit quality at the adoption date, as well as economic conditions and forecasts at that time. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805) - Clarifying the Definition of a Business.” This ASU narrows the definition of a business and clarifies that, to be considered a business, the fair value of the gross assets acquired (or disposed of) may not be substantially all concentrated in a single identifiable asset or group of similar assets. In addition, in order to be considered a business, a set of activities and assets must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. This ASU was effective for fiscal years beginning after December 15, 2017; early adoption was permitted on a limited basis. The Company adopted this guidance on January 1, 2018 and it did not have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” This ASU intends to simplify the subsequent measurement of goodwill, eliminating Step 2 from the goodwill impairment test. Instead, an entity should perform its annual goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge by which the carrying amount exceeds the reporting unit’s fair value; however the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The ASU also eliminates the requirement for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment. ASU No. 2017-04 is effective for fiscal years beginning after December 15, 2019; early adoption is permitted for annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of this update will not have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” This ASU requires the amortization of premiums to the earliest call date on debt securities with call features that are explicit, noncontingent and callable at fixed prices and on preset dates. This ASU does not impact securities held as a discount, as the discount continues to be amortized to the contractual maturity. The guidance is effective for fiscal years beginning after December 15, 2018, with early adoption permitted, including adoption in an interim period. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial statements. In August 2017, the FASB issued ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.” The amendments in this ASU was issued to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. As a result, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Current GAAP contains limitations on how an entity can designate the hedged risk in certain cash flow and fair value hedging relationships. To address those current limitations, the amendments in this ASU permit hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. In addition, the amendments in this ASU change the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company does not enter into derivatives that are designated as hedging instruments and as such, the adoption of this ASU is not expected to have an impact on the Company’s consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU was issued to address a narrow-scope financial reporting issue that arose as a result of the enactment of the Tax Cuts and Jobs Act (“Tax Reform”) on December 22, 2017. The objective of ASU 2018-02 is to address the tax effects of items within accumulated other comprehensive income (referred to as “stranded tax effects”) that do not reflect the appropriate tax rate enacted in the Tax Reform. As a result, the ASU 2018-02 allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate. The amount of the reclassification would be the difference between the historical corporate income tax rate of 35 percent and the newly enacted corporate income tax rate of 21 percent. ASU 2018-02 is effective for fiscal years beginning after December 15, 2018, with early adoption permitted, including adoption in an interim period. The amendments in this ASU may be applied retrospectively to each period in which the effect of the change in the U.S. Federal corporate income tax rate in the Tax Reform is recognized. The Company has early adopted ASU 2018-02 for the year ended December 31, 2017, and has elected not to reclassify the income tax effects of the Tax Reform from accumulated other comprehensive loss to retained earnings.

Business Combinations (Tables)

Business Combinations (Tables)	6 Months Ended
	Jun. 30, 2018
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Information	The pro forma information shown reflects adjustments related to certain purchase accounting fair value adjustments; amortization of core deposit and other intangibles; and related income tax effects. (in thousands) Pro forma Six Months Ended June 30, 2018 Pro forma Six Months Ended June 30, 2017 Net interest income $ 123,538 $ 119,805 Provision for loan losses 2,077 1,034 Non-interest income 18,609 19,400 Non-interest expense 125,005 100,758 Net income $ 11,627 $ 27,481 Fully diluted earnings per share $ 0.24 $ 0.57
Sun Bancorp, Inc.
Business Acquisition [Line Items]
Summary of Assets Acquired and Liabilities Assumed and Their Initial Fair Value Estimates	The following table summarizes the estimated fair values of the assets acquired and the liabilities assumed at the date of the acquisition for Sun, net of total consideration paid (in thousands): At January 31, 2018 Estimated Total Purchase Price: $ 474,930 Assets acquired: Cash and cash equivalents $ 68,632 Securities 254,522 Loans 1,517,346 Accrued interest receivable 5,621 Bank Owned Life Insurance 85,238 Deferred tax asset 57,943 Other assets 42,121 Core deposit intangible 11,897 Total assets acquired 2,043,320 Liabilities assumed: Deposits (1,616,073 ) Borrowings (127,747 ) Other liabilities (13,042 ) Total liabilities assumed (1,756,862 ) Net assets acquired $ 286,458 Goodwill recorded in the merger $ 188,472

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Reconciliation of Shares Outstanding for Basic and Diluted Earnings per Share	The following reconciles shares outstanding for basic and diluted earnings per share for the three and six months ended June 30, 2018 and 2017 (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 Weighted average shares outstanding 48,156 32,500 46,189 32,410 Less: Unallocated ESOP shares (378 ) (315 ) (334 ) (319 ) Unallocated incentive award shares and shares held by deferred compensation plan (60 ) (63 ) (50 ) (77 ) Average basic shares outstanding 47,718 32,122 45,805 32,014 Add: Effect of dilutive securities: Incentive awards and shares held by deferred compensation plan 986 1,016 981 1,097 Average diluted shares outstanding 48,704 33,138 46,786 33,111

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Securities Available-for-Sale and Held-to-Maturity	The amortized cost and estimated fair value of debt securities available-for-sale and held-to-maturity at June 30, 2018 , and December 31, 2017 , are as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value At June 30, 2018 Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 100,407 $ 6 $ (1,361 ) $ 99,052 Mortgage-backed securities - FNMA 1,325 — (8 ) 1,317 Total debt securities available-for-sale $ 101,732 $ 6 $ (1,369 ) $ 100,369 Debt securities held-to-maturity: Investment securities: U.S. agency obligations $ 14,972 $ — $ (182 ) $ 14,790 State and municipal obligations 140,037 12 (2,278 ) 137,771 Corporate debt securities 66,805 641 (3,090 ) 64,356 Total investment securities 221,814 653 (5,550 ) 216,917 Mortgage-backed securities: FHLMC 263,312 59 (7,074 ) 256,297 FNMA 303,598 939 (8,085 ) 296,452 GNMA 134,838 189 (2,345 ) 132,682 SBA 4,728 — (87 ) 4,641 Total mortgage-backed securities 706,476 1,187 (17,591 ) 690,072 Total debt securities held-to-maturity $ 928,290 $ 1,840 $ (23,141 ) $ 906,989 Total debt securities $ 1,030,022 $ 1,846 $ (24,510 ) $ 1,007,358 At December 31, 2017 Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 82,378 $ — $ (797 ) $ 81,581 Debt securities held-to-maturity: Investment securities: U.S. agency obligations $ 14,968 $ — $ (65 ) $ 14,903 State and municipal obligations 149,958 219 (1,475 ) 148,702 Corporate debt securities 76,024 312 (3,962 ) 72,374 Total investment securities 240,950 531 (5,502 ) 235,979 Mortgage-backed securities: FHLMC 186,921 151 (2,937 ) 184,135 FNMA 263,103 1,193 (3,000 ) 261,296 GNMA 75,243 64 (928 ) 74,379 SBA 5,843 28 — 5,871 Total mortgage-backed securities 531,110 1,436 (6,865 ) 525,681 Total debt securities held-to-maturity $ 772,060 $ 1,967 $ (12,367 ) $ 761,660 Total debt securities $ 854,438 $ 1,967 $ (13,164 ) $ 843,241
Carrying Value of Held-to-Maturity Investment Securities	The carrying value of the debt securities held-to-maturity at June 30, 2018 , and December 31, 2017 , is as follows (in thousands): June 30, 2018 December 31, 2017 Amortized cost $ 928,290 $ 772,060 Net loss on date of transfer from available-for-sale (13,347 ) (13,347 ) Accretion of net unrealized loss on securities reclassified as held-to-maturity 7,813 5,349 Carrying value $ 922,756 $ 764,062
Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity	The amortized cost and estimated fair value of investment securities at June 30, 2018 by contractual maturity are shown below (in thousands). Actual maturities may differ from contractual maturities in instances where issuers have the right to call or prepay obligations with or without call or prepayment penalties. At June 30, 2018 , corporate debt with an amortized cost of $53.7 million and estimated fair value of $51.4 million were callable prior to the maturity date. June 30, 2018 Amortized Cost Estimated Fair Value Less than one year $ 50,536 $ 50,361 Due after one year through five years 165,817 163,396 Due after five years through ten years 90,095 86,235 Due after ten years 15,773 15,977 $ 322,221 $ 315,969
Estimated Fair Value and Unrealized Loss for Securities Available-for-Sale and Held-to-Maturity	The estimated fair value and unrealized losses of debt securities available-for-sale and held-to-maturity at June 30, 2018 and December 31, 2017 , segregated by the duration of the unrealized losses, are as follows (in thousands): At June 30, 2018 Less than 12 months 12 months or longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 65,034 $ (765 ) $ 21,953 $ (596 ) $ 86,987 $ (1,361 ) Mortgage-backed securities - FNMA 1,317 (8 ) — — 1,317 (8 ) Total debt securities available-for-sale 66,351 (773 ) 21,953 (596 ) 88,304 (1,369 ) Debt securities held-to-maturity: Investment securities: U.S. agency obligations 14,790 (182 ) — — 14,790 (182 ) State and municipal obligations 103,443 (1,679 ) 16,255 (599 ) 119,698 (2,278 ) Corporate debt securities 6,384 (114 ) 40,055 (2,976 ) 46,439 (3,090 ) Total investment securities 124,617 (1,975 ) 56,310 (3,575 ) 180,927 (5,550 ) Mortgage-backed securities: FHLMC 190,811 (3,936 ) 61,563 (3,138 ) 252,374 (7,074 ) FNMA 183,931 (5,039 ) 58,634 (3,046 ) 242,565 (8,085 ) GNMA 69,051 (1,154 ) 39,052 (1,191 ) 108,103 (2,345 ) SBA 4,641 (87 ) — — 4,641 (87 ) Total mortgage-backed securities 448,434 (10,216 ) 159,249 (7,375 ) 607,683 (17,591 ) Total debt securities held-to-maturity 573,051 (12,191 ) 215,559 (10,950 ) 788,610 (23,141 ) Total debt securities $ 639,402 $ (12,964 ) $ 237,512 $ (11,546 ) $ 876,914 $ (24,510 ) At December 31, 2017 Less than 12 months 12 months or longer Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Debt securities available-for-sale: Investment securities - U.S. agency obligations $ 69,375 $ (496 ) $ 12,206 $ (301 ) $ 81,581 $ (797 ) Debt securities held-to-maturity: Investment securities: U.S. agency obligations 14,903 (65 ) — — 14,903 (65 ) State and municipal obligations 104,883 (1,153 ) 14,363 (322 ) 119,246 (1,475 ) Corporate debt securities 4,035 (30 ) 56,106 (3,932 ) 60,141 (3,962 ) Total investment securities 123,821 (1,248 ) 70,469 (4,254 ) 194,290 (5,502 ) Mortgage-backed securities: FHLMC 98,138 (781 ) 68,238 (2,156 ) 166,376 (2,937 ) FNMA 132,982 (1,058 ) 65,060 (1,942 ) 198,042 (3,000 ) GNMA 26,105 (223 ) 45,281 (705 ) 71,386 (928 ) Total mortgage-backed securities 257,225 (2,062 ) 178,579 (4,803 ) 435,804 (6,865 ) Total debt securities held-to-maturity 381,046 (3,310 ) 249,048 (9,057 ) 630,094 (12,367 ) Total debt securities $ 450,421 $ (3,806 ) $ 261,254 $ (9,358 ) $ 711,675 $ (13,164 )
Amortized Cost, Estimated Fair Value and Credit Rating of Corporate Debt Securities	At June 30, 2018 , the amortized cost, estimated fair value and credit rating of the individual corporate debt securities in an unrealized loss position for greater than one year are as follows (in thousands): Security Description Amortized Cost Estimated Fair Value Credit Rating Moody’s/ S&P Chase Capital $ 10,000 $ 9,275 Baa2/BBB- Wells Fargo Capital 5,000 4,700 A1/BBB Huntington Capital 5,000 4,525 Baa2/BB+ Keycorp Capital 5,000 4,625 Baa2/BB+ PNC Capital 5,000 4,666 Baa1/BBB- State Street Capital 5,000 4,675 A3/BBB SunTrust Capital 5,000 4,625 Not Rated/BB+ Southern Company 1,519 1,487 Baa2/BBB+ AT&T Inc. 1,512 1,477 Baa2/BBB $ 43,031 $ 40,055

Loans Receivable, Net (Tables)

Loans Receivable, Net (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Components of Loans Receivable, Net	Loans receivable, net at June 30, 2018 and December 31, 2017 consisted of the following (in thousands): June 30, 2018 December 31, 2017 Commercial: Commercial and industrial $ 337,699 $ 187,645 Commercial real estate – owner occupied 716,441 569,497 Commercial real estate – investor 2,068,782 1,186,302 Total commercial 3,122,922 1,943,444 Consumer: Residential real estate 2,010,648 1,748,590 Home equity loans and lines 364,699 281,143 Other consumer 50,952 1,225 Total consumer 2,426,299 2,030,958 5,549,221 3,974,402 Purchased credit impaired (“PCI”) loans 12,995 1,712 Total Loans 5,562,216 3,976,114 Deferred origination costs, net 7,510 5,380 Allowance for loan losses (16,691 ) (15,721 ) Total loans, net $ 5,553,035 $ 3,965,773
Analysis of Allowance for Loan Losses	An analysis of the allowance for loan losses for the three and six months ended June 30, 2018 and 2017 is as follows (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 Balance at beginning of period $ 16,817 $ 16,151 $ 15,721 $ 15,183 Provision charged to operations 706 1,165 2,077 1,865 Charge-offs (1,284 ) (1,299 ) (1,817 ) (1,504 ) Recoveries 452 540 710 1,013 Balance at end of period $ 16,691 $ 16,557 $ 16,691 $ 16,557
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method Excluding PCI Loans	The following table presents an analysis of the allowance for loan losses for the three and six months ended June 30, 2018 and 2017 and the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): Commercial and Industrial Commercial Real Estate – Owner Occupied Commercial Real Estate – Investor Residential Real Estate Consumer Unallocated Total For the three months ended June 30, 2018 Allowance for loan losses: Balance at beginning of period $ 2,251 $ 2,871 $ 8,838 $ 2,138 $ 507 $ 212 $ 16,817 Provision (benefit) charged to operations (186 ) (616 ) 1,166 8 (15 ) 349 706 Charge-offs (13 ) (90 ) (978 ) (157 ) (46 ) — (1,284 ) Recoveries 28 175 32 137 80 — 452 Balance at end of period $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 For the three months ended June 30, 2017 Allowance for loan losses: Balance at beginning of period $ 2,080 $ 3,449 $ 7,361 $ 1,569 $ 1,136 $ 556 $ 16,151 Provision (benefit) charged to operations 160 (342 ) 1,090 639 (244 ) (138 ) 1,165 Charge-offs — (23 ) (84 ) (1,152 ) (40 ) — (1,299 ) Recoveries 13 13 — 436 78 — 540 Balance at end of period $ 2,253 $ 3,097 $ 8,367 $ 1,492 $ 930 $ 418 $ 16,557 For the six months ended June 30, 2018 Allowance for loan losses: Balance at beginning of period $ 1,801 $ 3,175 $ 7,952 $ 1,804 $ 614 $ 375 $ 15,721 Provision (benefit) charged to operations 283 (923 ) 2,045 501 (15 ) 186 2,077 Charge-offs (56 ) (90 ) (1,101 ) (401 ) (169 ) — (1,817 ) Recoveries 52 178 162 222 96 — 710 Balance at end of period $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 For the six months ended June 30, 2017 Allowance for loan losses: Balance at beginning of period $ 2,037 $ 2,999 $ 6,361 $ 2,245 $ 1,110 $ 431 $ 15,183 Provision (benefit) charged to operations (41 ) 48 2,083 12 (224 ) (13 ) 1,865 Charge-offs (88 ) (73 ) (84 ) (1,201 ) (58 ) — (1,504 ) Recoveries 345 123 7 436 102 — 1,013 Balance at end of period $ 2,253 $ 3,097 $ 8,367 $ 1,492 $ 930 $ 418 $ 16,557 June 30, 2018 Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 675 $ — $ — $ — $ — $ — $ 675 Collectively evaluated for impairment 1,405 2,340 9,058 2,126 526 561 16,016 Total ending allowance balance $ 2,080 $ 2,340 $ 9,058 $ 2,126 $ 526 $ 561 $ 16,691 Loans: Loans individually evaluated for impairment $ 1,698 $ 5,521 $ 11,622 $ 11,028 $ 2,874 $ — $ 32,743 Loans collectively evaluated for impairment 336,001 710,920 2,057,160 1,999,620 412,777 — 5,516,478 Total ending loan balance $ 337,699 $ 716,441 $ 2,068,782 $ 2,010,648 $ 415,651 $ — $ 5,549,221 Commercial and Industrial Commercial Real Estate – Owner Occupied Commercial Real Estate – Investor Residential Real Estate Consumer Unallocated Total December 31, 2017 Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 1,801 3,175 7,952 1,804 614 375 15,721 Total ending allowance balance $ 1,801 $ 3,175 $ 7,952 $ 1,804 $ 614 $ 375 $ 15,721 Loans: Loans individually evaluated for impairment $ 864 $ 15,132 $ 17,923 $ 10,605 $ 2,464 $ — $ 46,988 Loans collectively evaluated for impairment 186,781 554,365 1,168,379 1,737,985 279,904 — 3,927,414 Total ending loan balance $ 187,645 $ 569,497 $ 1,186,302 $ 1,748,590 $ 282,368 $ — $ 3,974,402
Summary of Impaired Loans Excluding PCI Loans	A summary of impaired loans at June 30, 2018 , and December 31, 2017 , is as follows, excluding PCI loans (in thousands): June 30, 2018 December 31, 2017 Impaired loans with no allocated allowance for loan losses $ 31,271 $ 46,988 Impaired loans with allocated allowance for loan losses 1,472 — $ 32,743 $ 46,988 Amount of the allowance for loan losses allocated $ 675 $ —
Summary of Loans Individually Evaluated for Impairment by Loan Portfolio Segment Excluding PCI Loans	The summary of loans individually evaluated for impairment by loan portfolio segment as of June 30, 2018 , and December 31, 2017 and for the three and six months ended June 30, 2018 and 2017 , is as follows, excluding PCI loans (in thousands): Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated As of June 30, 2018 With no related allowance recorded: Commercial and industrial $ 239 $ 226 $ — Commercial real estate – owner occupied 5,532 5,521 — Commercial real estate – investor 14,024 11,622 — Residential real estate 11,418 11,028 — Consumer 3,241 2,874 — $ 34,454 $ 31,271 $ — With an allowance recorded: Commercial and industrial $ 1,472 $ 1,472 $ 675 Commercial real estate – owner occupied — — — Commercial real estate – investor — — — Residential real estate — — — Consumer — — — $ 1,472 $ 1,472 $ 675 As of December 31, 2017 With no related allowance recorded: Commercial and industrial $ 895 $ 864 $ — Commercial real estate – owner occupied 15,832 15,132 — Commercial real estate – investor 19,457 17,923 — Residential real estate 10,951 10,605 — Consumer 2,941 2,464 — $ 50,076 $ 46,988 $ — With an allowance recorded: Commercial and industrial $ — $ — $ — Commercial real estate – owner occupied — — — Commercial real estate – investor — — — Residential real estate — — — Consumer — — — $ — $ — $ — Three Months Ended June 30, 2018 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial and industrial $ 512 $ — $ 596 $ 19 Commercial real estate – owner occupied 7,666 36 10,830 24 Commercial real estate – investor 13,177 48 5,655 221 Residential real estate 11,217 112 10,929 187 Consumer 2,682 46 2,375 42 $ 35,254 $ 242 $ 30,385 $ 493 With an allowance recorded: Commercial and industrial $ 1,472 $ — $ — $ — Commercial real estate – owner occupied — — — — Commercial real estate – investor 1,677 — 5,249 13 Residential real estate — — 2,156 — Consumer — — 142 — $ 3,149 $ — $ 7,547 $ 13 Six Months Ended June 30, 2018 2017 Average Interest Average Interest With no related allowance recorded: Commercial and industrial $ 629 $ 16 $ 486 $ 24 Commercial real estate – owner occupied 10,155 151 10,927 185 Commercial real estate – investor 14,759 202 4,402 247 Residential real estate 11,013 237 10,517 273 Consumer 2,609 83 2,332 70 $ 39,165 $ 689 $ 28,664 $ 799 With an allowance recorded: Commercial and industrial $ 981 $ — $ — $ — Commercial real estate – owner occupied — — — — Commercial real estate – investor 1,118 — 4,130 68 Residential real estate — — 2,641 62 Consumer — — 198 6 $ 2,099 $ — $ 6,969 $ 136
Recorded Investment in Non-Accrual Loans by Loan Portfolio Segment Excluding PCI Loans	The following table presents the recorded investment in non-accrual loans by loan portfolio segment as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): June 30, 2018 December 31, 2017 Commercial and industrial $ 1,947 $ 503 Commercial real estate – owner occupied 522 5,962 Commercial real estate – investor 6,364 8,281 Residential real estate 6,858 4,190 Consumer 2,415 1,929 $ 18,106 $ 20,865
Aging of Recorded Investment in Past Due Loans Excluding PCI Loans	The following table presents the aging of the recorded investment in past due loans as of June 30, 2018 and December 31, 2017 by loan portfolio segment, excluding PCI loans (in thousands): 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days Past Due Total Past Due Loans Not Past Due Total June 30, 2018 Commercial and industrial $ 651 $ 40 $ 1,674 $ 2,365 $ 335,334 $ 337,699 Commercial real estate – owner occupied 3,125 — 197 3,322 713,119 716,441 Commercial real estate – investor 12,074 728 3,503 16,305 2,052,477 2,068,782 Residential real estate 15,253 3,673 3,077 22,003 1,988,645 2,010,648 Consumer 1,714 905 1,940 4,559 411,092 415,651 $ 32,817 $ 5,346 $ 10,391 $ 48,554 $ 5,500,667 $ 5,549,221 December 31, 2017 Commercial and industrial $ 2,694 $ 36 $ 503 $ 3,233 $ 184,412 $ 187,645 Commercial real estate – owner occupied 222 — 5,402 5,624 563,873 569,497 Commercial real estate – investor 135 1,426 4,507 6,068 1,180,234 1,186,302 Residential real estate 13,197 2,351 3,372 18,920 1,729,670 1,748,590 Consumer 1,067 310 1,687 3,064 279,304 282,368 $ 17,315 $ 4,123 $ 15,471 $ 36,909 $ 3,937,493 $ 3,974,402
Risk Category of Loans by Loan Portfolio Segment Excluding PCI Loans	As of June 30, 2018 and December 31, 2017 , and based on the most recent analysis performed, the risk category of loans by loan portfolio segment follows, excluding PCI loans (in thousands) is as follows: Pass Special Mention Substandard Doubtful Total June 30, 2018 Commercial and industrial $ 331,369 $ 2,520 $ 3,135 $ 675 $ 337,699 Commercial real estate – owner occupied 697,195 3,651 15,595 — 716,441 Commercial real estate – investor 2,025,639 22,949 20,194 — 2,068,782 $ 3,054,203 $ 29,120 $ 38,924 $ 675 $ 3,122,922 December 31, 2017 Commercial and industrial $ 181,438 $ 3,153 $ 3,054 $ — $ 187,645 Commercial real estate – owner occupied 546,569 4,337 18,591 — 569,497 Commercial real estate – investor 1,146,630 14,644 25,028 — 1,186,302 $ 1,874,637 $ 22,134 $ 46,673 $ — $ 1,943,444
Recorded Investment in Residential and Consumer Loans Based on Payment Activity Excluding PCI Loans	The following table presents the recorded investment in residential and consumer loans based on payment activity as of June 30, 2018 and December 31, 2017 , excluding PCI loans (in thousands): Residential Consumer June 30, 2018 Performing $ 2,003,790 $ 413,236 Non-performing 6,858 2,415 $ 2,010,648 $ 415,651 December 31, 2017 Performing $ 1,744,400 $ 280,439 Non-performing 4,190 1,929 $ 1,748,590 $ 282,368
Troubled Debt Restructurings	The following table presents information about troubled debt restructurings which occurred during the three and six months ended June 30, 2018 and 2017 , and troubled debt restructurings modified within the previous year and which defaulted during the three and six months ended June 30, 2018 and 2017 (dollars in thousands): Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Three months ended June 30, 2018 Troubled Debt Restructurings: Commercial and industrial 1 $ 259 $ 259 Commercial real estate – investor 1 1,045 1,045 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Post-modification Six months ended June 30, 2018 Troubled Debt Restructurings: Commercial and industrial 2 $ 496 $ 502 Commercial real estate – investor 2 1,224 1,225 Residential real estate 2 257 270 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Three Months Ended June 30, 2017 Troubled Debt Restructurings: Commercial and industrial 1 $ 665 $ 665 Commercial real estate - owner occupied 1 966 966 Commercial real estate – investor 2 5,036 5,011 Residential real estate 2 658 658 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None Number of Loans Pre-modification Recorded Investment Post-modification Recorded Investment Six months ended June 30, 2017 Troubled Debt Restructurings: Commercial and industrial 1 $ 665 $ 665 Commercial real estate - owner occupied 3 2,609 2,609 Commercial real estate – investor 3 5,662 5,784 Residential real estate 4 1,026 999 Number of Loans Recorded Investment Troubled Debt Restructurings Which Subsequently Defaulted: None None
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	The following table presents information regarding the estimates of the contractually required payments, the cash flows expected to be collected and the estimated fair value of the PCI loans acquired from Sun at January 31, 2018 (in thousands): Sun January 31, 2018 Contractually required principal and interest $ 22,556 Contractual cash flows not expected to be collected (non-accretable discount) (6,115 ) Expected cash flows to be collected at acquisition 16,441 Interest component of expected cash flows (accretable yield) (3,535 ) Fair value of acquired loans $ 12,906 The following table summarizes the changes in accretable yield for PCI loans during the three and six months ended June 30, 2018 and 2017 (in thousands): Three Months Ended June 30, 2018 Six Months Ended June 30, 2018 Three Months Ended June 30, 2017 Six Months Ended June 30, 2017 Beginning balance $ 3,492 $ 161 $ 693 $ 749 Acquisition — 3,535 — — Accretion (869 ) (1,091 ) (152 ) (314 ) Reclassification from non-accretable difference 566 584 924 1,030 Ending balance $ 3,189 $ 3,189 $ 1,465 $ 1,465

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Summary of Major Types of Deposits	The major types of deposits at June 30, 2018 and December 31, 2017 were as follows (in thousands): Type of Account June 30, 2018 December 31, 2017 Non-interest-bearing $ 1,195,980 $ 756,513 Interest-bearing checking 2,265,971 1,954,358 Money market deposit 574,269 363,656 Savings 903,777 661,167 Time deposits 879,409 607,104 Total deposits $ 5,819,406 $ 4,342,798

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Financial Assets and Financial Liabilities Measured at Fair Value	The following table summarizes financial assets and financial liabilities measured at fair value as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (in thousands): Fair Value Measurements at Reporting Date Using: Total Fair Value Level 1 Inputs Level 2 Inputs Level 3 Inputs June 30, 2018 Items measured on a recurring basis: Debt securities available-for-sale $ 100,369 $ — $ 100,369 $ — Equity investments 9,539 9,539 — — Interest rate swap asset 369 — 369 — Interest rate swap liability (369 ) — (369 ) — Items measured on a non-recurring basis: Other real estate owned 7,854 — — 7,854 Loans measured for impairment based on the fair value of the underlying collateral 11,832 — — 11,832 December 31, 2017 Items measured on a recurring basis: Debt securities available-for-sale $ 81,581 $ — $ 81,581 $ — Equity investments 8,700 8,700 — — Items measured on a non-recurring basis: Other real estate owned 8,186 — — 8,186 Loans measured for impairment based on the fair value of the underlying collateral 16,496 — — 16,496
Book Value and Estimated Fair Value of Bank's Significant Financial Instruments Not Recorded at Fair Value	The book value and estimated fair value of the Bank’s significant financial instruments not recorded at fair value as of June 30, 2018 and December 31, 2017 are presented in the following tables (in thousands): Fair Value Measurements at Reporting Date Using: June 30, 2018 Book Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Financial Assets: Cash and due from banks $ 254,469 $ 254,469 $ — $ — Debt securities held-to-maturity 922,756 — 893,814 13,175 Restricted equity investments 66,981 — — 66,981 Loans receivable, net and loans held-for-sale (1) 5,553,954 — — 5,459,399 Financial Liabilities: Deposits other than time deposits 4,939,997 — 4,939,997 — Time deposits 879,409 — 863,981 — Federal Home Loan Bank advances and other borrowings 773,655 — 779,701 — Securities sold under agreements to repurchase with retail customers 62,176 62,176 — — Fair Value Measurements at Reporting Date Using: December 31, 2017 Book Value Level 1 Inputs Level 2 Inputs Level 3 Inputs Financial Assets: Cash and due from banks $ 109,613 $ 109,613 $ — $ — Debt securities held-to-maturity 764,062 — 751,182 10,478 Restricted equity investments 19,724 — — 19,724 Loans receivable, net and loans held-for-sale (1) 3,966,014 — — 3,962,689 Financial Liabilities: Deposits other than time deposits 3,735,694 — 3,735,694 — Time deposits 607,104 — 599,677 — Federal Home Loan Bank advances and other borrowings 345,210 — 341,820 — Securities sold under agreements to repurchase with retail customers 79,668 79,668 — — (1) In accordance with the prospective adoption of ASU 2016-01, the fair value of loans was measured using the exit price notion as of June 30, 2018 . The fair value of loans was measured using the entry price notion as of December 31, 2017 .

Derivatives, Hedging Activiti26

Derivatives, Hedging Activities, and Other Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts and Fair Value of Outstanding Derivative Positions	The table below presents the notional and fair value of derivatives not designated as hedging instruments as well as their location on the consolidated statements of financial condition as of June 30, 2018 (in thousands): June 30, 2018 Balance Sheet Location Notional Fair Value Other assets $ 12,530 $ 369 Other liabilities 12,530 369

Business Combinations - Additio

Business Combinations - Additional Information (Detail) $ in Thousands	Jan. 31, 2018USD ($)	Jun. 30, 2018Property
Sun Bancorp, Inc.
Business Acquisition [Line Items]
Purchase accounting adjustments, assets	$ 2,043,320
Purchase accounting adjustments, loans	1,517,346
Purchase accounting adjustments, deposits	1,616,073
Total consideration paid	474,930
Cash consideration	72,400
Number of properties in lease agreement | Property		21
Core Deposits
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		10 years
Core Deposits | Sun Bancorp, Inc.
Business Acquisition [Line Items]
Core deposit intangible	$ 11,897

Business Combinations - Summary

Business Combinations - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed at Date of Acquisition (Detail) - USD ($) $ in Thousands	Jan. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Assets acquired:
Bank owned life insurance		$ 219,853	$ 134,847
Liabilities assumed:
Goodwill recorded in the merger		$ 338,972	$ 150,501
Sun Bancorp, Inc.
Business Acquisition [Line Items]
Total Purchase Price:	$ 474,930
Assets acquired:
Cash and cash equivalents	68,632
Securities	254,522
Loans	1,517,346
Accrued interest receivable	5,621
Bank owned life insurance	85,238
Deferred tax asset	57,943
Other assets	42,121
Total assets acquired	2,043,320
Liabilities assumed:
Deposits	(1,616,073)
Borrowings	(127,747)
Other liabilities	(13,042)
Total liabilities assumed	(1,756,862)
Net assets acquired	286,458
Goodwill recorded in the merger	$ 188,472

Business Combinations - Schedul

Business Combinations - Schedule of Supplemental Pro Forma Financial Information (Detail) - Sun Bancorp, Inc. - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Earnings per share, Actual:
Net interest income, Pro forma	$ 123,538	$ 119,805
Provision for loan losses, Pro forma	2,077	1,034
Non-interest income, Pro forma	18,609	19,400
Non-interest expense, Pro forma	125,005	100,758
Net income, Pro forma	$ 11,627	$ 27,481
Earnings per share, Pro forma:
Fully diluted, Pro forma	$ 0.24	$ 0.57

Earnings per Share - Reconcilia

Earnings per Share - Reconciliation of Shares Outstanding for Basic and Diluted Earnings per Share (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Weighted average shares outstanding	48,156	32,500	46,189	32,410
Less: Unallocated ESOP shares	(378)	(315)	(334)	(319)
Unallocated incentive award shares and shares held by deferred compensation plan	(60)	(63)	(50)	(77)
Average basic shares outstanding	47,718	32,122	45,805	32,014
Add: Effect of dilutive securities:
Incentive awards and shares held by deferred compensation plan	986	1,016	981	1,097
Average diluted shares outstanding	48,704	33,138	46,786	33,111

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Antidilutive stock options excluded from earnings per share calculations	464,000	480,000	464,000	200,000

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities Available-for-Sale and Held-to-Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost		$ 928,290	$ 772,060
Held-to-maturity, Estimated Fair Value	$ 906,989	761,660
Total, Amortized Cost	1,030,022	854,438
Total, Gross Unrealized Gains	1,846	1,967
Total, Gross Unrealized Losses	(24,510)	(13,164)
Total, Estimated Fair Value	1,007,358	843,241
Held-to-Maturity Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	928,290	772,060
Held-to-maturity, Gross Unrealized Gains	1,840	1,967
Held-to-maturity, Gross Unrealized Losses	(23,141)	(12,367)
Held-to-maturity, Estimated Fair Value	906,989	761,660
Held-to-Maturity Securities | Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	221,814	240,950
Held-to-maturity, Gross Unrealized Gains	653	531
Held-to-maturity, Gross Unrealized Losses	(5,550)	(5,502)
Held-to-maturity, Estimated Fair Value	216,917	235,979
Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	101,732
Held-to-maturity, Gross Unrealized Gains	6
Held-to-maturity, Gross Unrealized Losses	(1,369)
Held-to-maturity, Estimated Fair Value	100,369
U.S. Agency Obligations | Held-to-Maturity Securities | Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	14,972	14,968
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(182)	(65)
Held-to-maturity, Estimated Fair Value	14,790	14,903
U.S. Agency Obligations | Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	100,407	82,378
Held-to-maturity, Gross Unrealized Gains	6	0
Held-to-maturity, Gross Unrealized Losses	(1,361)	(797)
Held-to-maturity, Estimated Fair Value	99,052	81,581
Mortgage-Backed Securities | Held-to-Maturity Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	706,476	531,110
Held-to-maturity, Gross Unrealized Gains	1,187	1,436
Held-to-maturity, Gross Unrealized Losses	(17,591)	(6,865)
Held-to-maturity, Estimated Fair Value	690,072	525,681
Mortgage-Backed Securities | Held-to-Maturity Securities | FHLMC
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	263,312	186,921
Held-to-maturity, Gross Unrealized Gains	59	151
Held-to-maturity, Gross Unrealized Losses	(7,074)	(2,937)
Held-to-maturity, Estimated Fair Value	256,297	184,135
Mortgage-Backed Securities | Held-to-Maturity Securities | FNMA
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	303,598	263,103
Held-to-maturity, Gross Unrealized Gains	939	1,193
Held-to-maturity, Gross Unrealized Losses	(8,085)	(3,000)
Held-to-maturity, Estimated Fair Value	296,452	261,296
Mortgage-Backed Securities | Held-to-Maturity Securities | GNMA
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	134,838	75,243
Held-to-maturity, Gross Unrealized Gains	189	64
Held-to-maturity, Gross Unrealized Losses	(2,345)	(928)
Held-to-maturity, Estimated Fair Value	132,682	74,379
Mortgage-Backed Securities | Held-to-Maturity Securities | SBA
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	4,728	5,843
Held-to-maturity, Gross Unrealized Gains	0	28
Held-to-maturity, Gross Unrealized Losses	(87)	0
Held-to-maturity, Estimated Fair Value	4,641	5,871
Mortgage-Backed Securities | Debt Securities | FNMA
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	1,325
Held-to-maturity, Gross Unrealized Gains	0
Held-to-maturity, Gross Unrealized Losses	(8)
Held-to-maturity, Estimated Fair Value	1,317
State and Municipal Obligations | Held-to-Maturity Securities | Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	140,037	149,958
Held-to-maturity, Gross Unrealized Gains	12	219
Held-to-maturity, Gross Unrealized Losses	(2,278)	(1,475)
Held-to-maturity, Estimated Fair Value	137,771	148,702
Corporate Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	43,031
Held-to-maturity, Estimated Fair Value	40,055
Corporate Debt Securities | Held-to-Maturity Securities | Debt Securities
Securities Financing Transaction [Line Items]
Held-to-maturity, Amortized Cost	66,805	76,024
Held-to-maturity, Gross Unrealized Gains	641	312
Held-to-maturity, Gross Unrealized Losses	(3,090)	(3,962)
Held-to-maturity, Estimated Fair Value	$ 64,356	$ 72,374

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2013	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities transferred to held-to-maturity securities			$ 536,000,000
Unrealized net loss on securities transferred from available-for-sale to held-to-maturity, Gross			$ 13,300,000
Realized gains on the sale of available-for-sale securities	$ 246,000	$ 0		$ 248,000
Realized losses on sale of available-for-sale securities	0	$ 0		0
Corporate debt securities, callable, amortized cost	53,700,000			53,700,000
Corporate debt securities, callable, estimated fair value	51,400,000			51,400,000
Securities pledged for other debt obligations, at fair value	552,900,000			552,900,000	$ 466,400,000
Reverse Repurchase Agreement
Debt Securities, Available-for-sale [Line Items]
Securities pledged for repurchase agreements, at fair value	$ 77,300,000			$ 77,300,000	58,000,000
Investment Securities | U.S. Agency Obligations
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss					0
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, fair value					$ 0

Securities - Carrying Value of

Securities - Carrying Value of Held-to-Maturity Investment Securities (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Amortized Cost		$ 928,290	$ 772,060
Net loss on date of transfer from available-for-sale	$ (13,347)	(13,347)
Accretion of net unrealized loss on securities reclassified as held-to-maturity	7,813	5,349
Carrying value	$ 922,756	$ 764,062

Securities - Amortized Cost a35

Securities - Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Detail) $ in Thousands	Jun. 30, 2018USD ($)
Investments, Debt and Equity Securities [Abstract]
Less than one year, Amortized Cost	$ 50,536
Due after one year through five years, Amortized Cost	165,817
Due after five years through ten years, Amortized Cost	90,095
Due after ten years, Amortized Cost	15,773
Total Amortized Cost	322,221
Less than one year, Estimated Fair Value	50,361
Due after one year through five years, Estimated Fair Value	163,396
Due after five years through ten years, Estimated Fair Value	86,235
Due after ten years, Estimated Fair Value	15,977
Total Estimated Fair Value	$ 315,969

Securities - Estimated Fair Val

Securities - Estimated Fair Value and Unrealized Loss for Securities Available-for-Sale and Held-to-Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Total securities, Less than 12 months, Estimated Fair Value	$ 639,402	$ 450,421
Total securities, Less than 12 months, Unrealized Losses	(12,964)	(3,806)
Total securities, 12 months or longer, Estimated Fair Value	237,512	261,254
Total securities, 12 months or longer, Unrealized Losses	(11,546)	(9,358)
Total securities, Estimated Fair Value	876,914	711,675
Total securities, Unrealized Losses	(24,510)	(13,164)
Held-to-Maturity Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	573,051	381,046
Held-to-maturity, Less than 12 months, Unrealized Losses	(12,191)	(3,310)
Held-to-maturity, 12 months or longer, Estimated Fair Value	215,559	249,048
Held-to-maturity, 12 months or longer, Unrealized Losses	(10,950)	(9,057)
Held-to-maturity, Total, Estimated Fair Value	788,610	630,094
Held-to-maturity, Total, Unrealized Losses	(23,141)	(12,367)
Held-to-Maturity Securities | Investment Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	124,617	123,821
Held-to-maturity, Less than 12 months, Unrealized Losses	(1,975)	(1,248)
Held-to-maturity, 12 months or longer, Estimated Fair Value	56,310	70,469
Held-to-maturity, 12 months or longer, Unrealized Losses	(3,575)	(4,254)
Held-to-maturity, Total, Estimated Fair Value	180,927	194,290
Held-to-maturity, Total, Unrealized Losses	(5,550)	(5,502)
Held-to-Maturity Securities | Investment Securities | Other investments
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	6,384	4,035
Held-to-maturity, Less than 12 months, Unrealized Losses	(114)	(30)
Held-to-maturity, 12 months or longer, Estimated Fair Value	40,055	56,106
Held-to-maturity, 12 months or longer, Unrealized Losses	(2,976)	(3,932)
Held-to-maturity, Total, Estimated Fair Value	46,439	60,141
Held-to-maturity, Total, Unrealized Losses	(3,090)	(3,962)
U.S. Agency Obligations | Held-to-Maturity Securities | Investment Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value		14,903
Held-to-maturity, Less than 12 months, Unrealized Losses		(65)
Held-to-maturity, 12 months or longer, Estimated Fair Value		0
Held-to-maturity, 12 months or longer, Unrealized Losses		0
Held-to-maturity, Total, Estimated Fair Value		14,903
Held-to-maturity, Total, Unrealized Losses		(65)
Mortgage-Backed Securities | Held-to-Maturity Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	448,434	257,225
Held-to-maturity, Less than 12 months, Unrealized Losses	(10,216)	(2,062)
Held-to-maturity, 12 months or longer, Estimated Fair Value	159,249	178,579
Held-to-maturity, 12 months or longer, Unrealized Losses	(7,375)	(4,803)
Held-to-maturity, Total, Estimated Fair Value	607,683	435,804
Held-to-maturity, Total, Unrealized Losses	(17,591)	(6,865)
Mortgage-Backed Securities | Held-to-Maturity Securities | FHLMC
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	190,811	98,138
Held-to-maturity, Less than 12 months, Unrealized Losses	(3,936)	(781)
Held-to-maturity, 12 months or longer, Estimated Fair Value	61,563	68,238
Held-to-maturity, 12 months or longer, Unrealized Losses	(3,138)	(2,156)
Held-to-maturity, Total, Estimated Fair Value	252,374	166,376
Held-to-maturity, Total, Unrealized Losses	(7,074)	(2,937)
Mortgage-Backed Securities | Held-to-Maturity Securities | FNMA
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	183,931	132,982
Held-to-maturity, Less than 12 months, Unrealized Losses	(5,039)	(1,058)
Held-to-maturity, 12 months or longer, Estimated Fair Value	58,634	65,060
Held-to-maturity, 12 months or longer, Unrealized Losses	(3,046)	(1,942)
Held-to-maturity, Total, Estimated Fair Value	242,565	198,042
Held-to-maturity, Total, Unrealized Losses	(8,085)	(3,000)
Mortgage-Backed Securities | Held-to-Maturity Securities | GNMA
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	69,051	26,105
Held-to-maturity, Less than 12 months, Unrealized Losses	(1,154)	(223)
Held-to-maturity, 12 months or longer, Estimated Fair Value	39,052	45,281
Held-to-maturity, 12 months or longer, Unrealized Losses	(1,191)	(705)
Held-to-maturity, Total, Estimated Fair Value	108,103	71,386
Held-to-maturity, Total, Unrealized Losses	(2,345)	(928)
Mortgage-Backed Securities | Held-to-Maturity Securities | SBA
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	4,641
Held-to-maturity, Less than 12 months, Unrealized Losses	(87)
Held-to-maturity, 12 months or longer, Estimated Fair Value	0
Held-to-maturity, 12 months or longer, Unrealized Losses	0
Held-to-maturity, Total, Estimated Fair Value	4,641
Held-to-maturity, Total, Unrealized Losses	(87)	0
State and Municipal Obligations | Held-to-Maturity Securities | Investment Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	14,790
Held-to-maturity, Less than 12 months, Unrealized Losses	(182)
Held-to-maturity, 12 months or longer, Estimated Fair Value	0
Held-to-maturity, 12 months or longer, Unrealized Losses	0
Held-to-maturity, Total, Estimated Fair Value	14,790
Held-to-maturity, Total, Unrealized Losses	(182)
Corporate Debt Securities | Held-to-Maturity Securities | Investment Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	103,443	104,883
Held-to-maturity, Less than 12 months, Unrealized Losses	(1,679)	(1,153)
Held-to-maturity, 12 months or longer, Estimated Fair Value	16,255	14,363
Held-to-maturity, 12 months or longer, Unrealized Losses	(599)	(322)
Held-to-maturity, Total, Estimated Fair Value	119,698	119,246
Held-to-maturity, Total, Unrealized Losses	(2,278)	(1,475)
Investment Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	66,351
Held-to-maturity, Less than 12 months, Unrealized Losses	(773)
Held-to-maturity, 12 months or longer, Estimated Fair Value	21,953
Held-to-maturity, 12 months or longer, Unrealized Losses	(596)
Held-to-maturity, Total, Estimated Fair Value	88,304
Held-to-maturity, Total, Unrealized Losses	(1,369)
Investment Securities | U.S. Agency Obligations
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	65,034	69,375
Held-to-maturity, Less than 12 months, Unrealized Losses	(765)	(496)
Held-to-maturity, 12 months or longer, Estimated Fair Value	21,953	12,206
Held-to-maturity, 12 months or longer, Unrealized Losses	(596)	(301)
Held-to-maturity, Total, Estimated Fair Value	86,987	81,581
Held-to-maturity, Total, Unrealized Losses	(1,361)	$ (797)
Investment Securities | Mortgage-Backed Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 months, Estimated Fair Value	1,317
Held-to-maturity, Less than 12 months, Unrealized Losses	(8)
Held-to-maturity, 12 months or longer, Estimated Fair Value	0
Held-to-maturity, 12 months or longer, Unrealized Losses	0
Held-to-maturity, Total, Estimated Fair Value	1,317
Held-to-maturity, Total, Unrealized Losses	$ (8)

Securities - Amortized Cost, Es

Securities - Amortized Cost, Estimated Fair Value and Credit Rating of Corporate Debt Securities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		$ 928,290	$ 772,060
Held-to-maturity, Estimated Fair Value	$ 906,989	$ 761,660
Chase Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	10,000
Held-to-maturity, Estimated Fair Value	$ 9,275
Credit Rating Moody’s/ S&P	Baa2/BBB-
Wells Fargo Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,700
Credit Rating Moody’s/ S&P	A1/BBB
Huntington Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,525
Credit Rating Moody’s/ S&P	Baa2/BB+
Keycorp Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,625
Credit Rating Moody’s/ S&P	Baa2/BB+
PNC Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,666
Credit Rating Moody’s/ S&P	Baa1/BBB-
State Street Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,675
Credit Rating Moody’s/ S&P	A3/BBB
SunTrust Capital
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 5,000
Held-to-maturity, Estimated Fair Value	$ 4,625
Credit Rating Moody’s/ S&P	Not Rated/BB+
Southern Company
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 1,519
Held-to-maturity, Estimated Fair Value	$ 1,487
Credit Rating Moody’s/ S&P	Baa2/BBB+
AT&T Inc.
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 1,512
Held-to-maturity, Estimated Fair Value	$ 1,477
Credit Rating Moody’s/ S&P	Baa2/BBB
Corporate Debt Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 43,031
Held-to-maturity, Estimated Fair Value	$ 40,055

Loans Receivable, Net - Compone

Loans Receivable, Net - Components of Loans Receivable, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 5,549,221		$ 3,974,402
Purchased credit impaired ("PCI") loans	12,995		1,712
Total Loans	5,562,216		3,976,114
Deferred origination costs, net	7,510		5,380
Allowance for loan losses	(16,691)	$ (16,817)	(15,721)	$ (16,557)	$ (16,151)	$ (15,183)
Total loans, net	5,553,035		3,965,773
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,122,922		1,943,444
Commercial | Commercial And Industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	337,699		187,645
Commercial | Commercial Real Estate - Owner Occupied
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	716,441		569,497
Commercial | Commercial Real Estate - Investor
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,068,782		1,186,302
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,426,299		2,030,958
Allowance for loan losses	(526)	$ (507)	(614)	$ (930)	$ (1,136)	$ (1,110)
Consumer | Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,010,648		1,748,590
Consumer | Home Equity Loans and Lines
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	364,699		281,143
Consumer | Other Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 50,952		$ 1,225

Loans Receivable, Net - Additio

Loans Receivable, Net - Additional Information (Detail)	May 02, 2016USD ($)	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with non-accrual of interest		$ 18,106,000		$ 18,106,000		$ 20,865,000
Number of residential mortgage loans | SecurityLoan		0		0
Impaired loans on non-accrual commercial real estate, multi-family, land, construction, commercial and industrial loans				$ 250,000
Impaired loan portfolio total		$ 32,743,000		32,743,000		46,988,000
Allocation in allowance for loan losses		675,000		675,000		0
Average balance of impaired loans		38,400,000	$ 37,900,000	41,300,000	$ 35,600,000
Troubled debt restructured loans		28,500,000		28,500,000		42,100,000
Troubled debt restructured loans with accrual interest		24,300,000		24,300,000		33,300,000
Non-accrual loan total troubled debt restructurings				4,190,000		8,800,000
Specific reserves to loans accruing troubled debt restructurings		0		0
Sun Bancorp, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses, loans acquired	$ 0
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans with non-accrual of interest		6,858,000		6,858,000		$ 4,190,000
Recorded investment in mortgage and consumer loans collateralized, foreclosure amount		2,300,000		2,300,000
Foreclosed property held		$ 1,000,000		$ 1,000,000

Loans Receivable, Net - Analysi

Loans Receivable, Net - Analysis of Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 16,817	$ 16,151	$ 15,721	$ 15,183
Provision charged to operations	706	1,165	2,077	1,865
Charge-offs	(1,284)	(1,299)	(1,817)	(1,504)
Recoveries	452	540	710	1,013
Balance at end of period	$ 16,691	$ 16,557	$ 16,691	$ 16,557

Loans Receivable, Net - Allowan

Loans Receivable, Net - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment and Based on Impairment Method Excluding PCI Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Allowance for loan losses:
Balance at beginning of period	$ 16,817	$ 16,151	$ 15,721	$ 15,183
Provision (benefit) charged to operations	706	1,165	2,077	1,865
Charge-offs	(1,284)	(1,299)	(1,817)	(1,504)
Recoveries	452	540	710	1,013
Balance at end of period	16,691	16,557	16,691	16,557
Ending allowance balance attributed to loans:
Individually evaluated for impairment	675		675		$ 0
Collectively evaluated for impairment	16,016		16,016		15,721
Total ending allowance balance	16,691		16,691		15,721
Loans:
Loans individually evaluated for impairment	32,743		32,743		46,988
Loans collectively evaluated for impairment	5,516,478		5,516,478		3,927,414
Total loans	5,549,221		5,549,221		3,974,402
Commercial and Industrial
Allowance for loan losses:
Balance at beginning of period	2,251	2,080	1,801	2,037
Provision (benefit) charged to operations	(186)	160	283	(41)
Charge-offs	(13)	0	(56)	(88)
Recoveries	28	13	52	345
Balance at end of period	2,080	2,253	2,080	2,253
Ending allowance balance attributed to loans:
Individually evaluated for impairment	675		675
Collectively evaluated for impairment	1,405		1,405		1,801
Total ending allowance balance	2,080		2,080		1,801
Loans:
Loans individually evaluated for impairment	1,698		1,698		864
Loans collectively evaluated for impairment	336,001		336,001		186,781
Total loans	337,699		337,699		187,645
Commercial Real Estate - Owner Occupied
Allowance for loan losses:
Balance at beginning of period	2,871	3,449	3,175	2,999
Provision (benefit) charged to operations	(616)	(342)	(923)	48
Charge-offs	(90)	(23)	(90)	(73)
Recoveries	175	13	178	123
Balance at end of period	2,340	3,097	2,340	3,097
Ending allowance balance attributed to loans:
Collectively evaluated for impairment	2,340		2,340		3,175
Total ending allowance balance	2,340		2,340		3,175
Loans:
Loans individually evaluated for impairment	5,521		5,521		15,132
Loans collectively evaluated for impairment	710,920		710,920		554,365
Total loans	716,441		716,441		569,497
Commercial Real Estate - Investor
Allowance for loan losses:
Balance at beginning of period	8,838	7,361	7,952	6,361
Provision (benefit) charged to operations	1,166	1,090	2,045	2,083
Charge-offs	(978)	(84)	(1,101)	(84)
Recoveries	32	0	162	7
Balance at end of period	9,058	8,367	9,058	8,367
Ending allowance balance attributed to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	9,058		9,058		7,952
Total ending allowance balance	9,058		9,058		7,952
Loans:
Loans individually evaluated for impairment	11,622		11,622		17,923
Loans collectively evaluated for impairment	2,057,160		2,057,160		1,168,379
Total loans	2,068,782		2,068,782		1,186,302
Residential Real Estate
Allowance for loan losses:
Balance at beginning of period	2,138	1,569	1,804	2,245
Provision (benefit) charged to operations	8	639	501	12
Charge-offs	(157)	(1,152)	(401)	(1,201)
Recoveries	137	436	222	436
Balance at end of period	2,126	1,492	2,126	1,492
Ending allowance balance attributed to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	2,126		2,126		1,804
Total ending allowance balance	2,126		2,126		1,804
Loans:
Loans individually evaluated for impairment	11,028		11,028		10,605
Loans collectively evaluated for impairment	1,999,620		1,999,620		1,737,985
Total loans	2,010,648		2,010,648		1,748,590
Consumer
Allowance for loan losses:
Balance at beginning of period	507	1,136	614	1,110
Provision (benefit) charged to operations	(15)	(244)	(15)	(224)
Charge-offs	(46)	(40)	(169)	(58)
Recoveries	80	78	96	102
Balance at end of period	526	930	526	930
Ending allowance balance attributed to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	526		526		614
Total ending allowance balance	526		526		614
Loans:
Loans individually evaluated for impairment	2,874		2,874		2,464
Loans collectively evaluated for impairment	412,777		412,777		279,904
Total loans	415,651		415,651		282,368
Unallocated
Allowance for loan losses:
Balance at beginning of period	212	556	375	431
Provision (benefit) charged to operations	349	(138)	186	(13)
Balance at end of period	561	$ 418	561	$ 418
Ending allowance balance attributed to loans:
Collectively evaluated for impairment	561		561		375
Total ending allowance balance	561		561		375
Loans:
Total loans	$ 0		$ 0		$ 0

Loans Receivable, Net - Summary

Loans Receivable, Net - Summary of Impaired Loans Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Impaired loans with no allocated allowance for loan losses	$ 31,271	$ 46,988
Impaired loans with allocated allowance for loan losses	1,472	0
Total	32,743	46,988
Amount of the allowance for loan losses allocated	$ 675	$ 0

Loans Receivable, Net - Summa43

Loans Receivable, Net - Summary of Loans Individually Evaluated for Impairment by Loan Portfolio Segment Excluding PCI Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 32,743		$ 32,743		$ 46,988
Allowance for Loan Losses Allocated	675		675		0
With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	34,454		34,454		50,076
Recorded Investment	31,271		31,271		46,988
Average Recorded Investment	35,254	$ 30,385	39,165	$ 28,664
Interest Income Recognized	242	493	689	799
With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,472		1,472		0
Recorded Investment	1,472		1,472		0
Allowance for Loan Losses Allocated	675		675		0
Average Recorded Investment	3,149	7,547	2,099	6,969
Interest Income Recognized	0	13	0	136
Commercial and Industrial | With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	239		239		895
Recorded Investment	226		226		864
Average Recorded Investment	512	596	629	486
Interest Income Recognized	0	19	16	24
Commercial and Industrial | With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,472		1,472		0
Recorded Investment	1,472		1,472		0
Allowance for Loan Losses Allocated	675		675		0
Average Recorded Investment	1,472	0	981	0
Interest Income Recognized	0	0	0	0
Commercial Real Estate - Owner Occupied | With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,532		5,532		15,832
Recorded Investment	5,521		5,521		15,132
Average Recorded Investment	7,666	10,830	10,155	10,927
Interest Income Recognized	36	24	151	185
Commercial Real Estate - Owner Occupied | With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance					0
Recorded Investment					0
Allowance for Loan Losses Allocated					0
Average Recorded Investment	0	0	0	0
Interest Income Recognized		0		0
Commercial Real Estate - Investor | With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	14,024		14,024		19,457
Recorded Investment	11,622		11,622		17,923
Average Recorded Investment	13,177	5,655	14,759	4,402
Interest Income Recognized	48	221	202	247
Commercial Real Estate - Investor | With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0		0		0
Recorded Investment	0		0		0
Allowance for Loan Losses Allocated	0		0		0
Average Recorded Investment	1,677	5,249	1,118	4,130
Interest Income Recognized	0	13	0
Residential Real Estate | With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,418		11,418		10,951
Recorded Investment	11,028		11,028		10,605
Average Recorded Investment	11,217	10,929	11,013	10,517
Interest Income Recognized	112	187	237	273
Residential Real Estate | With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0		0		0
Recorded Investment	0		0		0
Allowance for Loan Losses Allocated	0		0		0
Average Recorded Investment	0	2,156	0	2,641
Interest Income Recognized	0	0	0	62
Consumer | With No Related Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	3,241		3,241		2,941
Recorded Investment	2,874		2,874		2,464
Average Recorded Investment	2,682	2,375	2,609	2,332
Interest Income Recognized	46	42	83	70
Consumer | With an Allowance Recorded
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0		0		0
Recorded Investment	0		0		0
Allowance for Loan Losses Allocated	0		0		$ 0
Average Recorded Investment	0	142	0	198
Interest Income Recognized	$ 0	$ 0	$ 0	$ 6

Loans Receivable, Net - Recorde

Loans Receivable, Net - Recorded Investment in Non-Accrual Loans by Loan Portfolio Segment Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	$ 18,106	$ 20,865
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	1,947	503
Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	522	5,962
Commercial Real Estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	6,364	8,281
Residential Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	6,858	4,190
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment in Non-accrual Loans	$ 2,415	$ 1,929

Loans Receivable, Net - Aging o

Loans Receivable, Net - Aging of Recorded Investment in Past Due Loans Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 48,554	$ 36,909
Greater than 90 Days Past Due	10,391	15,471
Loans Not Past Due	5,500,667	3,937,493
Total loans	5,549,221	3,974,402
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	32,817	17,315
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,346	4,123
Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,322	5,624
Greater than 90 Days Past Due	197	5,402
Loans Not Past Due	713,119	563,873
Total loans	716,441	569,497
Commercial Real Estate - Owner Occupied | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,125	222
Commercial Real Estate - Owner Occupied | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial Real Estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16,305	6,068
Greater than 90 Days Past Due	3,503	4,507
Loans Not Past Due	2,052,477	1,180,234
Total loans	2,068,782	1,186,302
Commercial Real Estate - Investor | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,074	135
Commercial Real Estate - Investor | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	728	1,426
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,559	3,064
Greater than 90 Days Past Due	1,940	1,687
Loans Not Past Due	411,092	279,304
Total loans	415,651	282,368
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,714	1,067
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	905	310
Residential Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	22,003	18,920
Greater than 90 Days Past Due	3,077	3,372
Loans Not Past Due	1,988,645	1,729,670
Total loans	2,010,648	1,748,590
Residential Real Estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15,253	13,197
Residential Real Estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,673	2,351
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,365	3,233
Greater than 90 Days Past Due	1,674	503
Loans Not Past Due	335,334	184,412
Total loans	337,699	187,645
Commercial and Industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	651	2,694
Commercial and Industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 40	$ 36

Loans Receivable, Net - Risk Ca

Loans Receivable, Net - Risk Category of Loans by Loan Portfolio Segment Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loan	$ 3,122,922	$ 1,943,444
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loan	337,699	187,645
Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loan	716,441	569,497
Commercial Real Estate - Investor
Financing Receivable, Recorded Investment [Line Items]
Loan	2,068,782	1,186,302
Pass
Financing Receivable, Recorded Investment [Line Items]
Loan	3,054,203	1,874,637
Pass | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loan	331,369	181,438
Pass | Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loan	697,195	546,569
Pass | Commercial Real Estate - Investor
Financing Receivable, Recorded Investment [Line Items]
Loan	2,025,639	1,146,630
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loan	29,120	22,134
Special Mention | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loan	2,520	3,153
Special Mention | Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loan	3,651	4,337
Special Mention | Commercial Real Estate - Investor
Financing Receivable, Recorded Investment [Line Items]
Loan	22,949	14,644
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loan	38,924	46,673
Substandard | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loan	3,135	3,054
Substandard | Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loan	15,595	18,591
Substandard | Commercial Real Estate - Investor
Financing Receivable, Recorded Investment [Line Items]
Loan	20,194	25,028
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loan	675	0
Doubtful | Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Loan	675	0
Doubtful | Commercial Real Estate - Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Loan	0	0
Doubtful | Commercial Real Estate - Investor
Financing Receivable, Recorded Investment [Line Items]
Loan	$ 0	$ 0

Loans Receivable, Net - Recor47

Loans Receivable, Net - Recorded Investment in Residential and Consumer Loans Based on Payment Activity Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Non-performing	$ 18,106	$ 20,865
Total loans	5,549,221	3,974,402
Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Non-performing	6,858	4,190
Total loans	2,010,648	1,748,590
Consumer
Financing Receivable, Recorded Investment [Line Items]
Non-performing	2,415	1,929
Total loans	415,651	282,368
Residential Real Estate | Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Performing	2,003,790	1,744,400
Non-performing	6,858	4,190
Total loans	2,010,648	1,748,590
Residential Real Estate | Consumer
Financing Receivable, Recorded Investment [Line Items]
Performing	413,236	280,439
Non-performing	2,415	1,929
Total loans	$ 415,651	$ 282,368

Loans Receivable, Net - Trouble

Loans Receivable, Net - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	1	2	1
Pre-modification Recorded Investment	$ 259		$ 496
Post-modification Recorded Investment	$ 259		$ 502
Recorded Investment		$ 665		$ 665
Commercial Real Estate - Owner Occupied
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan		1		3
Pre-modification Recorded Investment		$ 966		$ 2,609
Post-modification Recorded Investment		$ 966		$ 2,609
Commercial Real Estate - Investor
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	1	2	2	3
Pre-modification Recorded Investment	$ 1,045	$ 5,036	$ 1,224	$ 5,662
Post-modification Recorded Investment	$ 1,045	$ 5,011	$ 1,225	$ 5,784
Residential Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan		2	2	4
Pre-modification Recorded Investment		$ 658	$ 257	$ 1,026
Post-modification Recorded Investment		$ 658	$ 270	$ 999
Subsequently Defaulted
Financing Receivable, Modifications [Line Items]
Number of Loans | SecurityLoan	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0

Loans Receivable, Net - PCI Loa

Loans Receivable, Net - PCI Loans Acquired (Detail) - Sun Bancorp, Inc. $ in Thousands	Jan. 31, 2018USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest	$ 22,556
Contractual cash flows not expected to be collected (non-accretable discount)	(6,115)
Expected cash flows to be collected at acquisition	16,441
Interest component of expected cash flows (accretable yield)	(3,535)
Fair value of acquired loans	$ 12,906

Loans Receivable, Net - Summa50

Loans Receivable, Net - Summary of Changes in Accretable Yield (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 3,492	$ 693	$ 161	$ 749
Acquisition	0	0	3,535	0
Accretion	(869)	(152)	1,091	(314)
Reclassification from non-accretable difference	566	924	584	1,030
Ending balance	$ 3,189	$ 1,465	$ 3,189	$ 1,465

Deposits - Summary of Major Typ

Deposits - Summary of Major Types of Deposits (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Non-interest-bearing	$ 1,195,980	$ 756,513
Interest-bearing checking	2,265,971	1,954,358
Money market deposit	574,269	363,656
Savings	903,777	661,167
Time deposits	879,409	607,104
Total deposits	$ 5,819,406	$ 4,342,798

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Time deposits, $100,000 and over	$ 117	$ 84.9

Recent Accounting Pronounceme53

Recent Accounting Pronouncements - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 273,749		$ 271,023
Other comprehensive income, net of tax		$ 1,548	$ 437
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other comprehensive income, net of tax	$ 147

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets and Financial Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Items Measured on a Recurring Basis | U.S. Agency Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	$ 100,369	$ 81,581
Items Measured on a Recurring Basis | Equity investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	9,539	8,700
Items Measured on a Recurring Basis | Interest rate swap asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	369
Items Measured on a Recurring Basis | Interest rate swap liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	(369)
Items Measured on a Recurring Basis | Level 1 Inputs | Equity investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	9,539	8,700
Items Measured on a Recurring Basis | Level 2 Inputs | U.S. Agency Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	100,369	81,581
Items Measured on a Recurring Basis | Level 2 Inputs | Interest rate swap asset
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	369
Items Measured on a Recurring Basis | Level 2 Inputs | Interest rate swap liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	(369)
Items Measured on a Non-Recurring Basis | ERROR in label resolution.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	7,854	8,186
Items Measured on a Non-Recurring Basis | ERROR in label resolution.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	11,832	16,496
Items Measured on a Non-Recurring Basis | Level 3 Inputs | ERROR in label resolution.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	7,854	8,186
Items Measured on a Non-Recurring Basis | Level 3 Inputs | ERROR in label resolution.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 11,832	$ 16,496

Fair Value Measurements - Book

Fair Value Measurements - Book Value and Estimated Fair Value of Bank's Significant Financial Instruments Not Recorded at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial Assets:
Securities held-to-maturity, net estimated fair value	$ 906,989	$ 761,660
Restricted equity investments, at cost	66,981	19,724
Financial Liabilities:
Time deposits	879,409	607,104
Securities sold under agreements to repurchase with retail customers	62,176	79,668
Book Value
Financial Assets:
Cash and due from banks	254,469	109,613
Securities held-to-maturity, net estimated fair value	922,756	764,062
Restricted equity investments, at cost	66,981	19,724
Loans receivable, net and mortgage loans held for sale	5,553,954	3,966,014
Financial Liabilities:
Deposits other than time deposits	4,939,997	3,735,694
Time deposits	879,409	607,104
Federal Home Loan Bank advances and other borrowings	773,655	345,210
Securities sold under agreements to repurchase with retail customers	62,176	79,668
Level 1 Inputs
Financial Assets:
Cash and due from banks	254,469	109,613
Financial Liabilities:
Securities sold under agreements to repurchase with retail customers	62,176	79,668
Level 2 Inputs
Financial Assets:
Securities held-to-maturity, net estimated fair value	893,814	751,182
Financial Liabilities:
Deposits other than time deposits	4,939,997	3,735,694
Time deposits	863,981	599,677
Federal Home Loan Bank advances and other borrowings	779,701	341,820
Level 3 Inputs
Financial Assets:
Securities held-to-maturity, net estimated fair value	13,175	10,478
Restricted equity investments, fair value	66,981	19,724
Loans receivable, net and mortgage loans held for sale	$ 5,459,399	$ 3,962,689

Derivatives, Hedging Activiti56

Derivatives, Hedging Activities, and Other Financial Instruments - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2018USD ($)
Derivative [Line Items]
Collateral already posted, fair value	$ 1,800	$ 1,800
Derivative liability	369	369
Interest Rate Swap
Derivative [Line Items]
Income (expense) in fair value adjustments	$ 0	$ 2,000

Derivatives, Hedging Activiti57

Derivatives, Hedging Activities, and Other Financial Instruments - Notional and Fair Value of Derivatives Assets and Liabilities (Details) $ in Thousands	Jun. 30, 2018USD ($)
Other assets
Derivative [Line Items]
Derivative asset, notional amount	$ 12,530
Credit risk derivative asset, fair value	369
Other liabilities
Derivative [Line Items]
Derivative liability, notional amount	12,530
Credit risk derivative liability, fair value	$ 369