FCB Financial Inactive 10-Q9 Nov 162016 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2016	Nov. 01, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Trading Symbol	FCB
Entity Registrant Name	FCB FINANCIAL HOLDINGS, INC.
Entity Central Index Key	1,476,651
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		38,671,524
Class B Non-voting Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,289,954

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets:
Cash and due from banks	$ 67,324	$ 44,696
Interest-earning deposits in other banks	20,010	57,764
Investment securities:
Available for sale securities, at fair value	1,672,089	1,524,622
Federal Home Loan Bank and other bank stock, at cost	43,486	59,477
Total investment securities	1,715,575	1,584,099
Loans held for sale	15,748	2,514
Loans:
Loans	6,269,493	5,193,187
Allowance for loan losses	(35,785)	(29,126)
Loans, net	6,233,708	5,164,061
Premises and equipment, net	38,112	36,954
Other real estate owned	25,654	39,340
Goodwill	81,204	81,204
Core deposit intangible	4,947	5,880
Deferred tax assets, net	59,081	75,176
Bank-owned life insurance	172,105	168,246
Other assets	97,684	71,552
Total assets	8,531,152	7,331,486
Transaction accounts:
Noninterest-bearing	830,910	637,047
Interest-bearing	3,794,215	2,935,418
Total transaction accounts	4,625,125	3,572,465
Time deposits	2,292,438	1,858,173
Total deposits	6,917,563	5,430,638
Borrowings (including FHLB advances of $400,000 and $806,500, respectively)	568,175	983,183
Other liabilities	79,329	41,556
Total liabilities	7,565,067	6,455,377
Commitments and contingencies
Stockholders’ Equity:
Additional paid-in capital	866,673	850,609
Retained earnings	160,555	88,535
Accumulated other comprehensive income (loss)	16,186	(9,443)
Treasury stock, at cost; 2,694,489; 1,977,374 Class A and 192,132; 192,132 Class B common shares	(77,373)	(53,635)
Total stockholders’ equity	966,085	876,109
Total liabilities and stockholders’ equity	8,531,152	7,331,486
Class A Common Stock
Stockholders’ Equity:
Common stock	41	39
Class B Non-voting Common Stock
Stockholders’ Equity:
Common stock	3	4
New loans
Loans:
Loans	5,837,759	4,610,763
Allowance for loan losses	(30,525)
Acquired loans
Loans:
Loans	431,734	$ 582,424
Allowance for loan losses	$ (1,914)

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
FHLB advances	$ 400,000	$ 806,500
Class A Common Stock
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	41,241,596	39,103,945
Common stock, shares outstanding	38,547,107	37,126,571
Treasury stock, shares	2,694,489	1,977,374
Class B Non-voting Common Stock
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	2,557,596	3,926,014
Common stock, shares outstanding	2,365,464	3,733,882
Treasury stock, shares	192,132	192,132

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest income:
Interest and fees on loans	$ 65,748	$ 51,670	$ 189,678	$ 139,178
Interest and dividends on investment securities	14,955	13,315	43,799	38,594
Other interest income	97	38	259	111
Total interest income	80,800	65,023	233,736	177,883
Interest expense:
Interest on deposits	11,736	6,846	31,369	18,422
Interest on borrowings	1,786	1,408	5,717	3,634
Total interest expense	13,522	8,254	37,086	22,056
Net interest income	67,278	56,769	196,650	155,827
Provision for loan losses	1,990	675	5,406	4,494
Net interest income after provision for loan losses	65,288	56,094	191,244	151,333
Noninterest income:
Service charges and fees	884	823	2,532	2,358
Loan and other fees	2,145	1,783	6,407	6,186
Bank-owned life insurance income	1,288	1,101	3,859	3,295
FDIC loss share indemnification loss	0	0	0	(65,529)
Income from resolution of acquired assets	1,052	2,225	2,210	8,495
Gain (loss) on sales of other real estate owned	925	228	2,917	7,398
Gain (loss) on investment securities	749	166	1,019	1,934
Other noninterest income (loss)	1,099	746	2,854	2,998
Total noninterest income (loss)	8,142	7,072	21,798	(32,865)
Noninterest expense:
Salaries and employee benefits	18,711	16,840	56,970	51,271
Occupancy and equipment expenses	3,480	3,368	10,086	10,451
Loan and other real estate related expenses	1,834	1,939	5,889	5,440
Professional services	1,180	1,166	3,622	3,761
Data processing and network	2,882	2,433	8,541	7,952
Regulatory assessments and insurance	1,860	1,919	5,817	6,130
Amortization of intangibles	257	400	933	1,231
Other operating expenses	2,832	2,641	8,453	7,167
Total noninterest expense	33,036	30,706	100,311	93,403
Income (loss) before income tax expense (benefit)	40,394	32,460	112,731	25,065
Income tax expense (benefit)	14,330	11,320	40,711	1,423
Net income (loss)	$ 26,064	$ 21,140	$ 72,020	$ 23,642
Earnings (loss) per share:
Basic (usd per share)	$ 0.64	$ 0.51	$ 1.77	$ 0.57
Diluted (usd per share)	$ 0.60	$ 0.48	$ 1.67	$ 0.55
Weighted average shares outstanding:
Basic (shares)	40,608,706	41,381,482	40,651,201	41,410,494
Diluted (shares)	43,150,813	43,798,378	43,015,703	43,112,947

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 26,064	$ 21,140	$ 72,020	$ 23,642
Other comprehensive income (loss):
Unrealized net holding gains (losses) on investment securities available for sale, net of taxes of $(7,372), $1,784, $(16,761) and $1,283, respectively	11,751	(2,841)	26,689	(2,042)
Reclassification adjustment for realized (gains) losses on investment securities available for sale included in net income, net of taxes of $240, $90, $668 and $969, respectively	(381)	(142)	(1,060)	(1,542)
Total other comprehensive income (loss)	11,370	(2,983)	25,629	(3,584)
Total comprehensive income (loss)	$ 37,434	$ 18,157	$ 97,649	$ 20,058

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Unrealized net holding gains (losses) on investment securities available for sale, Taxes	$ (7,372)	$ 1,784	$ (16,761)	$ 1,283
Reclassification adjustment for realized (gains) losses on investment securities available for sale included in net income, Taxes	$ 240	$ 90	$ 668	$ 969

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Additional Paid in Capital	Retained Earnings (Deficit)	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Class A	Class ACommon Stock	Class B	Class BCommon Stock
Beginning Balance at Dec. 31, 2014	$ 851,653	$ 834,538	$ 35,144	$ (18,751)	$ 679		$ 36		$ 7
Beginning Balance, shares at Dec. 31, 2014							34,469,650		6,940,048
Net income (loss)	23,642		23,642
Exchange of B shares to A shares							$ 3		$ (3)
Exchange of B shares to A shares, shares							2,850,968		(2,850,968)
Stock-based compensation and warrant expense	4,588	4,588
Treasury stock purchases	(27,312)			(27,312)
Treasury stock purchases, shares							(838,903)
Exercise of stock options and warrants	6,935	6,935
Exercise of stock options and warrants, shares							413,405
Other	(44)	(44)
Other comprehensive income (loss)	(3,584)				(3,584)
Ending Balance at Sep. 30, 2015	855,878	846,017	58,786	(46,063)	(2,905)		$ 39		$ 4
Ending Balance, shares at Sep. 30, 2015							36,895,120		4,089,080
Beginning Balance at Dec. 31, 2015	876,109	850,609	88,535	(53,635)	(9,443)		$ 39		$ 4
Beginning Balance, shares at Dec. 31, 2015						37,126,571	37,126,571	3,733,882	3,733,882
Net income (loss)	72,020		72,020
Exchange of B shares to A shares							$ 1		$ (1)
Exchange of B shares to A shares, shares							1,368,418		(1,368,418)
Stock-based compensation and warrant expense	3,904	3,904
Treasury stock purchases	(23,738)			(23,738)
Treasury stock purchases, shares							(717,115)
Exercise of stock options and warrants	12,200	12,199					$ 1
Exercise of stock options and warrants, shares							648,021
Restricted stock units (RSUs) and restricted stock awards (RSAs), shares							121,212
Other	(39)	(39)
Other comprehensive income (loss)	25,629				25,629
Ending Balance at Sep. 30, 2016	$ 966,085	$ 866,673	$ 160,555	$ (77,373)	$ 16,186		$ 41		$ 3
Ending Balance, shares at Sep. 30, 2016						38,547,107	38,547,107	2,365,464	2,365,464

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities:
Net income (loss)	$ 72,020	$ 23,642
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for loan losses	5,406	4,494
Amortization of intangible assets	933	1,231
Depreciation and amortization of premises and equipment	2,643	2,866
Amortization of discount on loans	(730)	(2,272)
Net amortization (accretion) of premium (discount) on investment securities	1,148	1,515
Net amortization (accretion) of premium (discount) on time deposits	(44)	(306)
Net amortization (accretion) on FHLB advances and other borrowings	(1,968)	(1,950)
Impairment of other real estate owned	1,111	296
FDIC Loss share indemnification loss	0	65,529
(Gain) loss on investment securities	(1,019)	(1,934)
(Gain) loss on sale of loans	(1,242)	0
(Gain) loss on sale of other real estate owned	(2,917)	(7,398)
(Gain) loss on sale of premises and equipment	43	112
Deferred tax expense	0	(29,882)
Stock-based compensation, RSU and warrant expense	3,904	4,156
Increase in cash surrender value of BOLI	(3,859)	(3,295)
Net change in operating assets and liabilities:
Net change in loans held for sale	(11,992)	(1,866)
Settlement of FDIC loss share agreement	0	(14,815)
Net change in other assets	4,390	(1,909)
Net change in other liabilities	5,269	1,977
Net cash provided by (used in) operating activities	73,096	40,191
Cash Flows From Investing Activities:
Purchase of investment securities available for sale	(417,944)	(584,979)
Sales of investment securities available for sale	256,939	351,620
Paydown and maturities of investment securities available for sale	57,115	121,028
Purchase of FHLB and other bank stock	(64,657)	(51,881)
Sales of FHLB and other bank stock	80,648	52,817
Net change in loans	(968,109)	(664,119)
Purchase of loans	(200,480)	(241,727)
Proceeds from sale of loans	82,934	12,770
Purchase of bank-owned life insurance	0	(25,000)
Proceeds from sale of other real estate owned	26,824	60,046
Purchase of premises and equipment	(4,078)	(1,367)
Proceeds from the sale of premises and equipment	234	0
Proceeds from life insurance	0	1,193
Net cash provided by (used in) investing activities	(1,150,574)	(969,599)
Cash Flows From Financing Activities:
Net change in deposits	1,486,969	843,615
Net change in FHLB advances	(406,500)	2,364
Net change in repurchase agreements	(6,540)	81,525
Repurchase of stock	(23,738)	(27,312)
Exercise of stock options	12,200	6,935
Other	(39)	(45)
Net cash provided by (used in) financing activities	1,062,352	907,082
Net Change in Cash and Cash Equivalents	(15,126)	(22,326)
Cash and Cash Equivalents at Beginning of Period	102,460	107,085
Cash and Cash Equivalents at End of Period	87,334	84,759
Supplemental Disclosures of Cash Flow Information:
Interest paid	36,394	21,906
Income taxes paid	44,568	36,304
Supplemental disclosure of noncash investing and financing activities:
Transfer of loans to other real estate owned	$ 11,332	$ 18,822

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
Summary of Significant Accounting Policies	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES General The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all information and notes to the consolidated financial statements necessary for a complete presentation of financial position, results of operations, comprehensive income and cash flows in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) and should be read in conjunction with the audited consolidated financial statements and the notes thereto for FCB Financial Holdings, Inc. (the “Company”) previously filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period. Nature of Operations The Company is a national bank holding company with one wholly-owned national bank subsidiary, Florida Community Bank, N.A. (“Florida Community Bank” or the “Bank”), headquartered in Weston, Florida, offering a comprehensive range of traditional banking products and services to individual and corporate customers through 48 banking centers located in Florida at September 30, 2016 . Principles of Consolidation The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiary, the Bank, and the Bank’s subsidiaries, which consist of a group of real estate holding companies. Intercompany transactions and balances have been eliminated in consolidation. Use of Estimates The Company’s financial reporting and accounting policies conform to U.S. GAAP. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates subject to significant change include the allowance for loan losses, valuation of and accounting for loans covered by loss sharing arrangements with the FDIC and the related loss share receivable, valuation of and accounting for acquired loans, the carrying value of OREO, the fair value of financial instruments, the valuation of goodwill and other intangible assets, contingent consideration liabilities, acquisition-related fair value computations, stock-based compensation and deferred taxes. Recently Adopted Accounting Pronouncements In June 2014, the FASB issued ASU No. 2014-12, “Compensation- Stock Compensation (Topic 718) —Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period”. This ASU provides specific guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a non-vesting condition that affects the grant-date fair value of an award. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In November 2014, the FASB issued ASU No. 2014-16, “Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or Equity – a consensus of the FASB Emerging Issues Task Force (ASC 815, Derivatives and Hedging)”. This ASU requires an entity to determine the nature of an instrument by evaluating all economic characteristics and risks of the entire hybrid instrument when determining whether the host is more akin to debit or equity. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In January 2015, the FASB issued ASU No. 2015-01, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (ASC 225-20, Extraordinary and Unusual Items)” which eliminates the concept of extraordinary items. Under the ASU, extraordinary items will no longer be segregated from the results of ordinary operations and presented separately on the consolidated financial statements. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In February 2015, the FASB issued ASU No. 2015-02, “Amendments to the Consolidated Analysis (ASC 810, Consolidation)” which amends the consolidation requirements of ASC 810 by reducing the number of consolidation models. The guidance places more emphasis on risk of loss when determining a controlling financial interest; reduces the frequency of the application of related-party guidance when determining a controlling financial interest and changes the consolidation requirements of limited partnerships. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” which requires an acquirer to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments in this ASU require that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. Recently Issued Accounting Pronouncements In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” which: • Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. • Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value. • Eliminates the requirement for public business entities to disclose the method(s) 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. • Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. • Requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. • Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements. • Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. For public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early application by public business entities to financial statements of fiscal years or interim periods that have not yet been issued or, by all other entities, that have not yet been made available for issuance of the following amendments in this ASU are permitted as of the beginning of the fiscal year of adoption: 1. An entity should present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk if the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. 2. Entities that are not public business entities are not required to apply the fair value of financial instruments disclosure guidance in the General Subsection of Section 825-10-50. Except for the early application guidance discussed above, early adoption of the amendments in this ASU is not permitted. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption of the ASU. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842)” which created Topic 842, Leases, and supersedes the leases requirements in Topic 840, Leases. Topic 842 specifies the accounting for leases. The core principal of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities. For public entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the amendments in this ASU is permitted. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-06, “Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments” which clarifies the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this ASU is required to assess the embedded call (put) options solely in accordance with the four-stop decision sequence. The amendments are an improvement to GAAP because they eliminate diversity in practice in assessing embedded contingent call (put) options in debt instruments. For public business entities, the amendments in this ASU are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity should apply the amendments in this ASU on a modified retrospective basis to existing debt instruments as of the beginning of the fiscal year for which the amendments are effective. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-07, “Investments-Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting” which eliminate the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The amendments require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. The amendments in this ASU require that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. The amendments in this ASU are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” which simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. This ASU eliminates equity treatment for tax benefits or deficiencies that result from differences between the compensation cost recognized for GAAP purposes and the related tax deduction at settlement or expiration with such changes recognized in income tax expense and excludes excess tax benefits and tax deficiencies from the calculation of assumed proceeds for earnings per share purposes since such amounts are recognized in the income statement, which will result in greater volatility in earnings per share. In addition, this ASU simplifies the statements of cash flows by eliminating the bifurcation of excess tax benefits from operating activities to financing activities. Upon adoption, the amendments in this ASU provide for a tiered transition approach whereby amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements and forfeitures should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement should be applied prospectively. An entity may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. This ASU is effective for annual reporting periods beginning after December 15, 2016, and interim periods within those annual periods with early adoption permitted. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In May 2016, the FASB issued ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing.” The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the following two aspects of Topic 606: identifying performance obligations and the licensing implementation guidance, while retaining the related principles for those areas. The amendments in this ASU affect the guidance in ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606 (and any other Topic amended by ASU 2014-09). ASU 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, deferred the effective date of ASU 2014-09 by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In May 2016, the FASB issued ASU No. 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients.” The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The amendments in this ASU affect the guidance in ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606 (and any other Topic amended by ASU 2014-09). ASU 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, deferred the effective date of ASU 2014-09 by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit losses (Topic 326): Measurement of credit losses on financial instruments.” Topic 326 amends guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the probable initial recognition threshold in current GAAP and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. This ASU affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities that are SEC filers, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. For all other public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. All entities may adopt the amendments in this ASU earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. An entity will apply the amendments in this ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). A prospective transition approach is required for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The effect of a prospective transition approach is to maintain the same amortized cost basis before and after the effective date of this ASU. Amounts previously recognized in accumulated other comprehensive income as of the date of adoption that relate to improvements in cash flows expected to be collected should continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption should be recorded in earnings when received. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In August 2016, the FASB issued ASU No. 2016-15, "Statement of cash flows (Topic 230): Classification of certain cash receipts and cash payments." The objective of this guidance is to reduce the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230, Statement of Cash Flows, and other Topics. This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (COLIs) (including bank-owned life insurance policies (BOLIs)); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments in this ASU should be applied using a retrospective transition method to each period presented. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows.

Investment Securities

Investment Securities	9 Months Ended
Investment Securities	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The amortized cost, gross unrealized gains and losses and approximate fair values of securities available for sale are as follows: Amortized Cost Unrealized Fair Value September 30, 2016 Gains Losses (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 16,542 $ 158 $ 161 $ 16,539 U.S. Government agencies and sponsored enterprises mortgage-backed securities 422,358 10,829 274 432,913 State and municipal obligations 10,741 225 — 10,966 Asset-backed securities 497,109 2,702 1,397 498,414 Corporate bonds and other debt securities 554,514 15,491 2,699 567,306 Preferred stock and other equity securities 144,474 1,572 95 145,951 Total available for sale $ 1,645,738 $ 30,977 $ 4,626 $ 1,672,089 Amortized Cost Unrealized Fair Value December 31, 2015 Gains Losses (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 20,930 $ 100 $ 142 $ 20,888 U.S. Government agencies and sponsored enterprises mortgage-backed securities 392,123 2,587 1,595 393,115 State and municipal obligations 2,041 174 — 2,215 Asset-backed securities 503,240 383 9,689 493,934 Corporate bonds and other debt securities 450,489 1,596 7,190 444,895 Preferred stock and other equity securities 171,170 1,153 2,748 169,575 Total available for sale $ 1,539,993 $ 5,993 $ 21,364 $ 1,524,622 As part of the Company’s liquidity management strategy, the Company pledges loans and securities to secure borrowings from the Federal Home Loan Bank of Atlanta ("FHLB'). The Company also pledges securities to collateralize public deposits, repurchase agreements and interest rate swaps. The carrying value of all pledged securities totaled $538.0 million and $939.6 million at September 30, 2016 and December 31, 2015 , respectively. The amortized cost and estimated fair value of securities available for sale, by contractual maturity, are as follows: September 30, 2016 Amortized Cost Fair Value (Dollars in thousands) Available for sale: Due in one year or less $ — $ — Due after one year through five years 182,483 182,922 Due after five years through ten years 91,492 93,451 Due after ten years 291,280 301,899 U.S. Government agencies and sponsored enterprises obligations, mortgage-backed securities and asset-backed securities 936,009 947,866 Preferred stock and other equity securities 144,474 145,951 Total available for sale $ 1,645,738 $ 1,672,089 For purposes of the maturity table, U.S Government agencies and sponsored enterprises obligations, agency mortgage-backed securities and asset-backed securities, the principal of which are repaid periodically, are presented as a single amount. The expected lives of these securities will differ from contractual maturities because borrowers may have the right to prepay the underlying loans with or without prepayment penalties. The following tables present the estimated fair values and gross unrealized losses on investment securities available for sale, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position as of the periods presented: Less than 12 Months 12 Months or More Total September 30, 2016 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 11,724 $ 161 $ — $ — $ 11,724 $ 161 U.S. Government agencies and sponsored enterprises mortgage-backed securities 14,220 53 12,782 221 27,002 274 State and municipal obligations — — — — — — Asset-backed securities 3,841 4 91,524 1,393 95,365 1,397 Corporate bonds and other debt securities 71,720 543 85,185 2,156 156,905 2,699 Preferred stock and other equity securities 33,783 19 5,069 76 38,852 95 Total available for sale $ 135,288 $ 780 $ 194,560 $ 3,846 $ 329,848 $ 4,626 Less than 12 Months 12 Months or More Total December 31, 2015 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 15,687 $ 142 $ — $ — $ 15,687 $ 142 U.S. Government agencies and sponsored enterprises mortgage-backed securities 225,109 1,391 12,584 204 237,693 1,595 State and municipal obligations — — — — — — Asset-backed securities 354,912 6,290 78,112 3,399 433,024 9,689 Corporate bonds and other debt securities 347,302 7,190 — — 347,302 7,190 Preferred stock and other equity securities 96,543 1,740 19,000 1,008 115,543 2,748 Total available for sale $ 1,039,553 $ 16,753 $ 109,696 $ 4,611 $ 1,149,249 $ 21,364 At September 30, 2016 , the Company’s security portfolio consisted of 346 securities, of which 79 securities were in an unrealized loss position. A total of 34 were in an unrealized loss position for less than 12 months . The unrealized losses for these securities resulted primarily from changes in interest rates and spreads. The Company monitors its investment securities for other-than-temporary-impairment ("OTTI"). Impairment is evaluated on an individual security basis considering numerous factors, and its relative significance varying by situation. The Company has evaluated the nature of unrealized losses in the investment securities portfolio to determine if OTTI exists. The unrealized losses relate to changes in market interest rates and market conditions that do not represent credit-related impairments. Furthermore, the Company does not intend to sell nor is it more likely than not that it will be required to sell these investments before the recovery of their amortized cost basis. Management has completed an assessment of each security in an unrealized loss position for credit impairment, including securities with existing characteristics that are covered under the Volcker Rule, and has determined that no individual security was other-than-temporarily impaired at September 30, 2016 . The following describes the basis under which the Company has evaluated OTTI: U.S. Government Agencies and Sponsored Enterprises Obligations and Agency Mortgage-Backed Securities (“MBS”): The unrealized losses associated with U.S. Government agencies and sponsored enterprises obligations and agency MBS are primarily driven by changes in interest rates. These securities have either an explicit or implicit U.S. government guarantee. Asset-Backed Securities and Corporate Bonds & Other Debt Securities: Securities were underwritten in accordance with the Company’s investment standards prior to the decision to purchase, without relying on a bond issuer’s guarantee in making the investment decision. These investments are investment grade and will continue to be monitored as part of the Company’s ongoing impairment analysis, but are expected to perform in accordance with their terms. Preferred Stock and Other Equity Securities: The unrealized losses associated with preferred stock and other equity securities in large U.S. financial institutions are primarily driven by changes in interest rates and spreads. These securities were generally underwritten in accordance with the Company’s investment standards prior to the decision to purchase. Gross realized gains and losses on the sale of securities available for sale are shown below. The cost of securities sold is based on the specific identification method. Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands) Gross realized gains $ 1,074 $ 104 $ 2,283 $ 2,065 Gross realized losses (386 ) (106 ) (1,382 ) (1,019 ) Net realized gains (losses) $ 688 $ (2 ) $ 901 $ 1,046

Loans, Net

Loans, Net	9 Months Ended
Loans, Net	Sep. 30, 2016
Receivables [Abstract]
Loans, Net	LOANS, NET The Company’s loan portfolio consists of New and Acquired loans. The Company classifies originated loans and purchased loans not acquired through business combinations as New loans. The Company classifies loans acquired through business combinations as Acquired loans. All acquired loans not specifically excluded under ASC 310-30 are accounted for under ASC 310-30. The remaining portfolio of acquired loans excluded under ASC 310-30 are accounted for under ASC 310-20 and are classified as Non-ASC 310-30 loans. The following tables summarize the Company’s loans by portfolio and segment as of the periods presented, net of deferred fees, costs, premiums and discounts: September 30, 2016 ASC 310-30 Loans Non-ASC 310-30 Loans New Loans (1) Total (Dollars in thousands) Real estate loans: Commercial real estate $ 160,219 $ 39,769 $ 1,272,150 $ 1,472,138 Owner-occupied commercial real estate — 20,042 596,131 616,173 1-4 single family residential 34,329 71,302 1,982,340 2,087,971 Construction, land and development 25,156 6,338 639,626 671,120 Home equity loans and lines of credit — 43,096 47,508 90,604 Total real estate loans $ 219,704 $ 180,547 $ 4,537,755 $ 4,938,006 Other loans: Commercial and industrial $ 21,985 $ 7,001 $ 1,295,324 $ 1,324,310 Consumer 2,074 423 4,680 7,177 Total other loans 24,059 7,424 1,300,004 1,331,487 Total loans held in portfolio $ 243,763 $ 187,971 $ 5,837,759 $ 6,269,493 Allowance for loan losses (35,785 ) Loans held in portfolio, net $ 6,233,708 December 31, 2015 ASC 310-30 Loans Non-ASC 310-30 Loans New Loans (1) Total (Dollars in thousands) Real estate loans: Commercial real estate $ 247,628 $ 55,985 $ 998,141 $ 1,301,754 Owner-occupied commercial real estate — 21,101 524,728 545,829 1-4 single family residential 40,922 84,111 1,541,255 1,666,288 Construction, land and development 28,017 6,338 537,494 571,849 Home equity loans and lines of credit — 49,407 30,945 80,352 Total real estate loans $ 316,567 $ 216,942 $ 3,632,563 $ 4,166,072 Other loans: Commercial and industrial $ 36,783 $ 9,312 $ 972,803 $ 1,018,898 Consumer 2,390 430 5,397 8,217 Total other loans 39,173 9,742 978,200 1,027,115 Total loans held in portfolio $ 355,740 $ 226,684 $ 4,610,763 $ 5,193,187 Allowance for loan losses (29,126 ) Loans held in portfolio, net $ 5,164,061 (1) Balance includes $5.0 million and $7.1 million of deferred fees, costs, and premium and discount as of September 30, 2016 and December 31, 2015 , respectively. At September 30, 2016 and December 31, 2015 , the unpaid principal balance of ASC 310-30 loans were $280.4 million and $457.9 million , respectively. At September 30, 2016 and December 31, 2015 , the Company had pledged loans as collateral for FHLB advances of $3.11 billion and $2.13 billion , respectively. The recorded investments of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process as of September 30, 2016 totaled $3.1 million . The Company held $466.9 million and $464.2 million of syndicated national loans as of September 30, 2016 and December 31, 2015 During the three and nine months ended September 30, 2016 , the Company purchased approximately $9.7 and $198.9 million in loans from third parties. During the three and nine months ended September 30, 2015, the Company purchased approximately $0.0 million and $233.6 million , respectively, in loans from third parties. During the three and nine months ended September 30, 2016 , the Company sold approximately $23.3 million and $85.0 million , respectively, loans to third parties. During the three and nine months ended September 30, 2015, the Company sold approximately $26.4 million and $45.9 million , respectively, in loans to third parties. The accretable discount on ASC 310-30 loans represents the amount by which the undiscounted expected cash flows on such loans exceed their carrying value. The change in expected cash flows for certain ASC 310-30 loan pools resulted in the reclassification of $23.2 million and $28.6 million between non-accretable and accretable discount during the nine months ended September 30, 2016 and 2015 , respectively. Changes in accretable discount for ASC 310-30 loans for the nine months ended September 30, 2016 and 2015 , were as follows: Nine Months Ended September 30, 2016 2015 (Dollars in thousands) Balance at January 1, $ 144,152 $ 156,197 Accretion (42,722 ) (38,273 ) Reclassifications from (to) non-accretable difference (23,207 ) 28,638 Balance at September 30, $ 78,223 $ 146,562

Allowance for Loan Losses

Allowance for Loan Losses	9 Months Ended
Allowance for Loan Losses	Sep. 30, 2016
Receivables [Abstract]
Allowance for Loan Losses	ALLOWANCE FOR LOAN LOSSES The Company’s accounting method for loans and the corresponding allowance for loan losses (“ALL”) differs depending on whether the loans are New or Acquired. The Company assesses and monitors credit risk and portfolio performance using distinct methodologies for Acquired loans, both ASC 310-30 Loans and Non-ASC 310-30 Loans, and New loans. Within each of these portfolios, the Company further disaggregates the portfolios into the following segments: Commercial real estate, Owner-occupied commercial real estate, 1-4 single family residential, Construction, land and development, Home equity loans and lines of credit, Commercial and industrial and Consumer. The ALL reflects management’s estimate of probable credit losses inherent in each of the segments. Changes in the ALL by loan portfolio and segment for the three and nine months ended September 30, 2016 and 2015 are as follows: Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at July 1, 2016 $ 9,745 $ 2,252 $ 7,439 $ 3,763 $ 615 $ 9,465 $ 427 $ 33,706 Provision (credit) for ASC 310-30 loans 110 — 2 (81 ) — (25 ) (11 ) (5 ) Provision (credit) for non-ASC 310-30 loans (68 ) (56 ) 27 7 1 64 5 (20 ) Provision (credit) for New loans 111 141 (639 ) 998 19 1,332 53 2,015 Total provision 153 85 (610 ) 924 20 1,371 47 1,990 Charge-offs for ASC 310-30 loans — — (31 ) — — — (4 ) (35 ) Charge-offs for non-ASC 310-30 loans — — — — — — — — Charge-offs for New loans — — — — — — — — Total charge-offs — — (31 ) — — — (4 ) (35 ) Recoveries for ASC 310-30 loans 106 — — 10 — — — 116 Recoveries for non-ASC 310-30 loans — — — — 8 — — 8 Recoveries for New loans — — — — — — — — Total recoveries 106 — — 10 8 — — 124 Ending ALL balance ASC 310-30 loans 2,330 — 29 277 — 341 369 3,346 Non-ASC 310-30 loans 867 284 309 44 282 119 9 1,914 New loans 6,807 2,053 6,460 4,376 361 10,376 92 30,525 Balance at September 30, 2016 $ 10,004 $ 2,337 $ 6,798 $ 4,697 $ 643 $ 10,836 $ 470 $ 35,785 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at July 1, 2015 $ 9,652 $ 1,548 $ 5,744 $ 3,024 $ 563 $ 6,059 $ 456 $ 27,046 Provision (credit) for ASC 310-30 loans (791 ) — (38 ) (310 ) — (67 ) 30 (1,176 ) Provision (credit) for non-ASC 310-30 loans (110 ) 14 11 (20 ) 74 41 6 16 Provision (credit) for New loans (390 ) 45 203 251 41 1,712 (27 ) 1,835 Total provision (1,291 ) 59 176 (79 ) 115 1,686 9 675 Charge-offs for ASC 310-30 loans (65 ) — (224 ) — — (57 ) — (346 ) Charge-offs for non-ASC 310-30 loans — — — — (37 ) — (8 ) (45 ) Charge-offs for New loans — — — — — — — — Total charge-offs (65 ) — (224 ) — (37 ) (57 ) (8 ) (391 ) Recoveries for ASC 310-30 loans — — 18 18 — 23 — 59 Recoveries for non-ASC 310-30 loans — — — — — — — — Recoveries for New loans — — — — — 5 — 5 Total recoveries — — 18 18 — 28 — 64 Ending ALL balance ASC 310-30 loans 1,729 — 26 501 — 1,032 417 3,705 Non-ASC 310-30 loans 1,265 68 346 36 469 82 4 2,270 New loans 5,302 1,539 5,342 2,426 172 6,602 36 21,419 Balance at September 30, 2015 $ 8,296 $ 1,607 $ 5,714 $ 2,963 $ 641 $ 7,716 $ 457 $ 27,394 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at January 1, 2016 $ 8,450 $ 2,243 $ 6,425 $ 3,404 $ 483 $ 7,665 $ 456 $ 29,126 Provision (credit) for ASC 310-30 loans (83 ) — 3 (90 ) — (47 ) (31 ) (248 ) Provision (credit) for non-ASC 310-30 loans (1,021 ) (178 ) (23 ) 8 18 59 11 (1,126 ) Provision (credit) for New loans 1,339 273 393 1,336 169 3,224 46 6,780 Total provision 235 95 373 1,254 187 3,236 26 5,406 Charge-offs for ASC 310-30 loans (352 ) — (31 ) (33 ) — (76 ) (6 ) (498 ) Charge-offs for non-ASC 310-30 loans — (1 ) — — (35 ) — (6 ) (42 ) Charge-offs for New loans — — — — — — — — Total charge-offs (352 ) (1 ) (31 ) (33 ) (35 ) (76 ) (12 ) (540 ) Recoveries for ASC 310-30 loans 867 — 31 72 — 11 — 981 Recoveries for non-ASC 310-30 loans 804 — — — 8 — — 812 Recoveries for New loans — — — — — — — — Total recoveries 1,671 — 31 72 8 11 — 1,793 Ending ALL balance ASC 310-30 loans 2,330 — 29 277 — 341 369 3,346 Non-ASC 310-30 loans 867 284 309 44 282 119 9 1,914 New loans 6,807 2,053 6,460 4,376 361 10,376 92 30,525 Balance at September 30, 2016 $ 10,004 $ 2,337 $ 6,798 $ 4,697 $ 643 $ 10,836 $ 470 $ 35,785 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at January 1, 2015 $ 8,206 $ 1,020 $ 4,740 $ 2,456 $ 355 $ 5,745 $ 358 $ 22,880 Provision (credit) for ASC 310-30 loans (1,656 ) — (37 ) (508 ) — 52 187 (1,962 ) Provision (credit) for non-ASC 310-30 loans 770 10 60 (39 ) 221 33 6 1,061 Provision (credit) for New loans 846 577 1,341 703 102 1,852 (26 ) 5,395 Total provision (40 ) 587 1,364 156 323 1,937 167 4,494 Charge-offs for ASC 310-30 loans (270 ) — (431 ) (56 ) — (132 ) (60 ) (949 ) Charge-offs for non-ASC 310-30 loans — — (128 ) — (37 ) — (8 ) (173 ) Charge-offs for New loans — — — — — — — — Total charge-offs (270 ) — (559 ) (56 ) (37 ) (132 ) (68 ) (1,122 ) Recoveries for ASC 310-30 loans 400 — 169 407 — 154 — 1,130 Recoveries for non-ASC 310-30 loans — — — — — — — — Recoveries for New loans — — — — — 12 — 12 Total recoveries 400 — 169 407 — 166 — 1,142 Ending ALL balance ASC 310-30 loans 1,729 — 26 501 — 1,032 417 3,705 Non-ASC 310-30 loans 1,265 68 346 36 469 82 4 2,270 New loans 5,302 1,539 5,342 2,426 172 6,602 36 21,419 Balance at September 30, 2015 $ 8,296 $ 1,607 $ 5,714 $ 2,963 $ 641 $ 7,716 $ 457 $ 27,394 Credit Quality Indicators In evaluating credit risk, the Company looks at multiple factors; however, management considers delinquency status to be the most meaningful indicator of the credit quality of 1-4 single family residential, home equity loans and lines of credit and consumer loans. Delinquency statistics are updated at least monthly. Internal risk ratings are considered the most meaningful indicator of credit quality for Non-ASC 310-30 and New commercial, construction, land and development and commercial real estate loans. Internal risk ratings are updated on a continuous basis. The following tables present an aging analysis of the recorded investment for delinquent loans by portfolio and segment (excluding loans accounted for under ASC 310-30): Accruing September 30, 2016 30 to 59 Days Past Due 60 to 89 Days Past Due 90 Days or More Past Due Non- Accrual Total (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ 581 $ — $ — $ — $ 581 Owner-occupied commercial real estate — — — — — 1-4 single family residential — 722 — 698 1,420 Construction, land and development — — — — — Home equity loans and lines of credit — — — 63 63 Total real estate loans 581 722 — 761 2,064 Other loans: Commercial and industrial — — — — — Consumer — — — — — Total other loans — — — — — Total new loans $ 581 $ 722 $ — $ 761 $ 2,064 Acquired loans: Real estate loans: Commercial real estate $ — $ — $ — $ 4,773 $ 4,773 Owner-occupied commercial real estate 528 — — 2,158 2,686 1-4 single family residential 153 — — 2,649 2,802 Construction, land and development — — — — — Home equity loans and lines of credit 58 20 — 2,430 2,508 Total real estate loans 739 20 — 12,010 12,769 Other loans: Commercial and industrial 177 — — 687 864 Consumer — — — — — Total other loans 177 — — 687 864 Total acquired loans $ 916 $ 20 $ — $ 12,697 $ 13,633 Accruing December 31, 2015 30 to 59 Days Past Due 60 to 89 Days Past Due 90 Days or More Past Due Non- Accrual Total (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — 113 — — 113 1-4 single family residential 9,439 869 — 1,454 11,762 Construction, land and development 467 — — — 467 Home equity loans and lines of credit 64 — — — 64 Total real estate loans 9,970 982 — 1,454 12,406 Other loans: Commercial and industrial — — — — — Consumer — — — — — Total other loans — — — — — Total new loans $ 9,970 $ 982 $ — $ 1,454 $ 12,406 Acquired Loans: Real estate loans: Commercial real estate $ 63 $ — $ — $ 5,282 $ 5,345 Owner-occupied commercial real estate — 95 — 2,247 2,342 1-4 single family residential 1,393 697 — 3,016 5,106 Construction, land and development — — — — — Home equity loans and lines of credit 490 97 — 2,295 2,882 Total real estate loans 1,946 889 — 12,840 15,675 Other loans: Commercial and industrial 90 — — 877 967 Consumer — — — 23 23 Total other loans 90 — — 900 990 Total acquired loans $ 2,036 $ 889 $ — $ 13,740 $ 16,665 Loans exhibiting potential credit weaknesses that deserve management’s close attention and that if left uncorrected may result in deterioration of the repayment capacity of the borrower are categorized as special mention. Loans with well-defined credit weaknesses including payment defaults, declining collateral values, frequent overdrafts, operating losses, increasing balance sheet leverage, inadequate cash flow, project cost overruns, unreasonable construction delays, past due real estate taxes or exhausted interest reserves are assigned an internal risk rating of substandard. A loan with a weakness so severe that collection in full is highly questionable or improbable will be assigned an internal risk rating of doubtful. The following table summarizes the Company’s commercial Non-ASC 310-30 and New loans by key indicators of credit quality. Loans accounted for under ASC 310-30 are excluded from the following analysis because their related allowance is determined by loan pool performance: September 30, 2016 Pass Special Mention Substandard Doubtful (Dollars in thousands) New loans: Commercial real estate $ 1,272,150 $ — $ — $ — Owner-occupied commercial real estate 595,956 175 — — Construction, land and development 639,626 — — — Commercial and industrial 1,295,324 — — — Total new loans $ 3,803,056 $ 175 $ — $ — Acquired loans: Commercial real estate $ 34,632 $ — $ 5,137 $ — Owner-occupied commercial real estate 17,884 — 2,158 — Construction, land and development 6,338 — — — Commercial and industrial 5,955 — 1,046 — Total acquired loans $ 64,809 $ — $ 8,341 $ — December 31, 2015 Pass Special Substandard Doubtful (Dollars in thousands) New loans: Commercial real estate $ 998,141 $ — $ — $ — Owner-occupied commercial real estate 524,728 — — — Construction, land and development 537,494 — — — Commercial and industrial 972,803 — — — Total new loans $ 3,033,166 $ — $ — $ — Acquired loans: Commercial real estate $ 50,328 $ — $ 5,657 $ — Owner-occupied commercial real estate 18,854 — 2,247 — Construction, land and development 6,338 — — — Commercial and industrial 6,715 1,352 1,245 — Total acquired loans $ 82,235 $ 1,352 $ 9,149 $ — Internal risk ratings are a key factor in identifying loans to be individually evaluated for impairment and impact management’s estimates of loss factors used in determining the amount of the ALL. The following table shows the Company’s investment in loans disaggregated based on the method of evaluating impairment: Loans - Recorded Investment Allowance for Credit Loss September 30, 2016 Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ 1,272,150 $ — $ — $ 6,807 $ — Owner-occupied commercial real estate — 596,131 — — 2,053 — 1-4 single family residential 524 1,981,816 — — 6,460 — Construction, land and development — 639,626 — — 4,376 — Home equity loans and lines of credit 66 47,442 — 66 361 — Total real estate loans $ 590 $ 4,537,165 $ — $ 66 $ 20,057 $ — Other loans: Commercial and industrial $ — $ 1,295,324 $ — $ — $ 10,376 $ — Consumer — 4,680 — — 92 — Total other loans $ — $ 1,300,004 $ — $ — $ 10,468 $ — Acquired loans: Real estate loans: Commercial real estate $ 4,773 $ 34,996 $ 160,219 $ 688 $ 179 $ 2,330 Owner-occupied commercial real estate 2,068 17,974 — 223 61 — 1-4 single family residential 2,833 68,469 34,329 88 221 29 Construction, land and development — 6,338 25,156 — 44 277 Home equity loans and lines of credit 1,055 42,041 — — 282 — Total real estate loans $ 10,729 $ 169,818 $ 219,704 $ 999 $ 787 $ 2,636 Other loans: Commercial and industrial $ 687 $ 6,314 $ 21,985 $ 68 $ 51 $ 341 Consumer — 423 2,074 — 9 369 Total other loans $ 687 $ 6,737 $ 24,059 $ 68 $ 60 $ 710 Loans - Recorded Investment Allowance for Credit Loss December 31, 2015 Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ 998,141 $ — $ — $ 5,468 $ — Owner-occupied commercial real estate — 524,728 — — 1,780 — 1-4 single family residential — 1,541,255 — — 6,067 — Construction, land and development — 537,494 — — 3,040 — Home equity loans and lines of credit — 30,945 — — 192 — Total real estate loans $ — $ 3,632,563 $ — $ — $ 16,547 $ — Other loans: Commercial and industrial $ — $ 972,803 $ — $ — $ 7,152 $ — Consumer — 5,397 — — 46 — Total other loans $ — $ 978,200 $ — $ — $ 7,198 $ — Acquired Loans: Real estate loans: Commercial real estate $ 5,282 $ 50,703 $ 247,628 $ 829 $ 255 $ 1,898 Owner-occupied commercial real estate 2,244 18,857 — 399 64 — 1-4 single family residential 263 83,848 40,922 — 332 26 Construction, land and development — 6,338 28,017 — 36 328 Home equity loans and lines of credit 916 48,491 — — 291 — Total real estate loans $ 8,705 $ 208,237 $ 316,567 $ 1,228 $ 978 $ 2,252 Other loans: Commercial and industrial $ 877 $ 8,435 $ 36,783 $ — $ 60 $ 453 Consumer — 430 2,390 — 4 406 Total other loans $ 877 $ 8,865 $ 39,173 $ — $ 64 $ 859 The following tables set forth certain information regarding the Company’s impaired loans (excluding loans accounted for under ASC 310-30) that were evaluated for specific reserves: Impaired Loans - With Allowance Impaired Loans - With no Allowance September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — — — — — 1-4 single family residential — — — 524 524 Construction, land and development — — — — — Home equity loans and lines of credit 66 66 66 — — Total real estate loans $ 66 $ 66 $ 66 $ 524 $ 524 Other loans: Commercial and industrial $ — $ — $ — $ — $ — Consumer — — — — — Total other loans $ — $ — $ — $ — $ — Acquired loans: Real estate loans: Commercial real estate $ 4,414 $ 4,921 $ 688 $ 359 $ 397 Owner-occupied commercial real estate 2,068 2,241 223 — — 1-4 single family residential 565 512 88 1,951 2,268 Construction, land and development — — — — — Home equity loans and lines of credit — — — 1,055 1,415 Total real estate loans $ 7,047 $ 7,674 $ 999 $ 3,365 $ 4,080 Other loans: Commercial and industrial $ 345 $ 345 $ 68 $ 342 $ 1,075 Consumer — — — — — Total other loans $ 345 $ 345 $ 68 $ 342 $ 1,075 Impaired Loans - With Allowance Impaired Loans - With no Allowance December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — — — — — 1-4 single family residential — — — — — Construction, land and development — — — — — Home equity loans and lines of credit — — — — — Total real estate loans $ — $ — $ — $ — $ — Other loans: Commercial and industrial $ — $ — $ — $ — $ — Consumer — — — — — Total other loans $ — $ — $ — $ — $ — Acquired loans: Real estate loans: Commercial real estate $ 4,555 $ 4,924 $ 829 $ 727 $ 750 Owner-occupied commercial real estate 2,244 2,310 399 — — 1-4 single family residential — — — 263 264 Construction, land and development — — — — — Home equity loans and lines of credit — — — 916 1,048 Total real estate loans $ 6,799 $ 7,234 $ 1,228 $ 1,906 $ 2,062 Other loans: Commercial and industrial $ — $ — $ — $ 877 $ 1,825 Consumer — — — — — Total other loans $ — $ — $ — $ 877 $ 1,825 Three Months Ended September 30, 2016 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) Impaired loans with no related allowance: Real estate loans: Commercial real estate $ 386 $ — $ 231 $ — Owner-occupied commercial real estate — — — — 1-4 single family residential 2,389 — — — Construction, land and development — — — — Home equity loans and lines of credit 1,151 — 523 — Total real estate loans $ 3,926 $ — $ 754 $ — Other loans: Commercial and industrial $ 342 $ — $ 547 $ — Consumer — — — — Total other loans $ 342 $ — $ 547 $ — Impaired loans with an allowance: Real estate loans: Commercial real estate $ 4,436 $ — $ 4,734 $ — Owner-occupied commercial real estate 2,097 — — — 1-4 single family residential 565 — — — Construction, land and development — — — — Home equity loans and lines of credit 66 — 424 — Total real estate loans $ 7,164 $ — $ 5,158 $ — Other loans: Commercial and industrial $ 345 $ — $ — $ — Consumer — — — — Total other loans $ 345 $ — $ — $ — Nine Months Ended September 30, 2016 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) Impaired loans with no related allowance: Real estate loans: Commercial real estate $ 439 $ — $ 151 $ — Owner-occupied commercial real estate — — — — 1-4 single family residential 1,689 — — — Construction, land and development — — — — Home equity loans and lines of credit 1,346 — 527 — Total real estate loans $ 3,474 $ — $ 678 $ — Other loans: Commercial and industrial $ 342 $ — $ 542 $ — Consumer — — — — Total other loans $ 342 $ — $ 542 $ — Impaired loans with an allowance: Real estate loans: Commercial real estate $ 4,480 $ — $ 4,843 $ — Owner-occupied commercial real estate 2,156 — — — 1-4 single family residential 565 — — — Construction, land and development — — — — Home equity loans and lines of credit 36 — 436 — Total real estate loans $ 7,237 $ — $ 5,279 $ — Other loans: Commercial and industrial $ 471 $ — $ — $ — Consumer — — — — Total other loans $ 471 $ — $ — $ —

Goodwill and Intangibles

Goodwill and Intangibles	9 Months Ended
Goodwill and Intangibles	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangibles	GOODWILL AND INTANGIBLES Goodwill and other intangible assets, which consist of core deposit intangibles are summarized as follows: September 30, 2016 December 31, 2015 (Dollars in thousands) Goodwill $ 81,204 $ 81,204 Core deposit intangible 14,370 14,370 Less: Accumulated amortization (9,423 ) (8,490 ) Net core deposit intangible $ 4,947 $ 5,880 Amortization expense for core deposit intangibles for the nine months ended September 30, 2016 and 2015 totaled $933 thousand and $1.2 million , respectively. The estimated amount of amortization expense for core deposit intangible assets to be recognized during the next five fiscal years is as follows: 2016 2017 2018 2019 2020 (Dollars in thousands) Core deposit intangible $ 256 $ 1,023 $ 1,023 $ 1,023 $ 491

Derivatives

Derivatives	9 Months Ended
Derivatives	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	DERIVATIVES The Company is a party to interest rate derivatives that are not designated as hedging instruments. These derivatives are interest rate swaps that the Company enters into with customers to allow customers to convert variable rate loans to fixed rates. At the same time the interest rate swap is entered into with the customer, an offsetting interest rate swap is entered into with another financial institution. The changes in the fair value of the swaps offset each other, except for any differences in the credit risk of the counterparties, which is determined by considering the risk rating, probability of default and loss of given default of each counterparty. The Company recorded $993 thousand and $892 thousand of customer swap fees in noninterest income in the accompanying consolidated statement of income for the three months ended September 30, 2016 and 2015, respectively, and $3.5 million and $3.7 million for the nine months ended September 30, 2016 and 2015 , respectively. As of September 30, 2016 , the Company has not recorded any credit adjustments related to the credit risk of the counterparties. There was no change in the fair value of derivative assets and derivative liabilities attributable to credit risk included in noninterest expense on the statements of income for the three or nine months ended September 30, 2016 or 2015 . The following tables summarize the Company’s derivatives outstanding included in other assets and other liabilities in the accompanying consolidated balance sheets: September 30, 2016 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments under ASC 815-10 Interest rate contracts - pay floating, receive fixed $ 856,124 $ 44,057 $ — $ — Interest rate contracts - pay fixed, receive floating — — 856,124 44,057 Total derivatives $ 856,124 $ 44,057 $ 856,124 $ 44,057 December 31, 2015 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments under ASC 815-10 Interest rate contracts - pay floating, receive fixed $ 690,175 $ 21,553 $ 8,298 $ 2 Interest rate contracts - pay fixed, receive floating — — 698,474 21,551 Total derivatives $ 690,175 $ 21,553 $ 706,772 $ 21,553 The derivative transactions entered into with a financial institution are subject to an enforceable master netting arrangement. The following table summarizes the gross and net fair values of the Company’s derivatives outstanding with this counterparty included in other liabilities in the accompanying consolidated balance sheets: September 30, 2016 Gross amounts of recognized liabilities Gross amounts offset in the consolidated balance sheets Net amounts in the consolidated balance sheets (Dollars in thousands) Offsetting derivative liabilities Counterparty A - Interest rate contracts $ 44,057 $ — $ 44,057 Total $ 44,057 $ — $ 44,057 December 31, 2015 Gross amounts of recognized liabilities Gross amounts offset in the consolidated balance sheets Net amounts in the consolidated balance sheets (Dollars in thousands) Offsetting derivative liabilities Counterparty A - Interest rate contracts $ 21,553 $ (2 ) $ 21,551 Total $ 21,553 $ (2 ) $ 21,551 At September 30, 2016 , the Company has pledged investment securities available for sale with a carrying amount of $50.8 million as collateral for the interest rate swaps in a liability position. The amount of collateral required to be posted by the Company varies based on the settlement value of outstanding swaps. As of September 30, 2016 and December 31, 2015 , substantially all of the floating rate terms within the interest rate contracts held by the Company were indexed to 1-month LIBOR. The fair value of the derivative assets and liabilities are included in a table in Note 13 “Fair Value Measurements,” in the line items “Derivative assets” and “Derivative liabilities.”

Deposits

Deposits	9 Months Ended
Deposits	Sep. 30, 2016
Banking and Thrift [Abstract]
Deposits	DEPOSITS The following table sets forth the Company’s deposits by category: September 30, 2016 December 31, 2015 (Dollars in thousands) Noninterest-bearing demand deposits $ 830,910 $ 637,047 Interest-bearing demand deposits 905,687 608,454 Interest-bearing NOW accounts 420,207 347,832 Savings and money market accounts 2,468,321 1,979,132 Time deposits 2,292,438 1,858,173 Total deposits $ 6,917,563 $ 5,430,638 Time deposits $100,000 and greater $ 1,727,598 $ 1,323,520 Time deposits greater than $250,000 857,102 587,590 The aggregate amount of overdraft demand deposits reclassified to loans was $391 thousand at September 30, 2016 . The aggregate amount of maturities for time deposits for each of the five years as of September 30, 2016 totaled $1.56 billion , $541.2 million , $178.1 million , $6.1 million and $9.0 million , respectively. The Company holds brokered deposits through an insured deposit sweep program of $601.4 million and $425.1 million at September 30, 2016 and December 31, 2015 , respectively. The Company holds brokered certificates of deposit of $3.3 million at September 30, 2016 and December 31, 2015 , respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
Accumulated Other Comprehensive Income	Sep. 30, 2016
Equity [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME Changes in AOCI for the periods indicated are summarized as follows: Three Months Ended September 30, 2016 2015 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax (Dollars in thousands) Balance at beginning of period $ 7,849 $ (3,033 ) $ 4,816 $ 127 $ (49 ) $ 78 Unrealized gain (loss) on investment securities available for sale: Net unrealized holdings gain (loss) arising during the period 19,123 (7,372 ) 11,751 (4,625 ) 1,784 (2,841 ) Amounts reclassified to (gain) loss on investment securities (621 ) 240 (381 ) (232 ) 90 (142 ) Balance at end of period $ 26,351 $ (10,165 ) $ 16,186 $ (4,730 ) $ 1,825 $ (2,905 ) Nine Months Ended September 30, 2016 2015 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax (Dollars in thousands) Balance at beginning of period $ (15,371 ) $ 5,928 $ (9,443 ) $ 1,106 $ (427 ) $ 679 Unrealized gain (loss) on investment securities available for sale: Net unrealized holdings gain (loss) arising during the period 43,450 (16,761 ) 26,689 (3,325 ) 1,283 (2,042 ) Amounts reclassified to (gain) loss on investment securities (1,728 ) 668 (1,060 ) (2,511 ) 969 (1,542 ) Balance at end of period $ 26,351 $ (10,165 ) $ 16,186 $ (4,730 ) $ 1,825 $ (2,905 )

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Share	9 Months Ended
Basic and Diluted Earnings Per Share	Sep. 30, 2016
Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Share	BASIC AND DILUTED EARNINGS PER SHARE Basic earnings per share (“EPS”) is calculated by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted EPS reflect the effect of common stock equivalents, including stock options and unvested shares, calculated using the treasury stock method. Common stock equivalents are excluded from the computation of diluted EPS in periods in which the effect is anti-dilutive. The following table presents the computation of basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands, except share and per share data) Net income (loss) available to common stockholders $ 26,064 $ 21,140 $ 72,020 $ 23,642 Weighted average number of common shares - basic 40,608,706 41,381,482 40,651,201 41,410,494 Effect of dilutive securities: Employee stock-based compensation awards and warrants 2,542,107 2,416,896 2,364,502 1,702,453 Weighted average number of common shares - diluted 43,150,813 43,798,378 43,015,703 43,112,947 Basic earnings (loss) per share $ 0.64 $ 0.51 $ 1.77 $ 0.57 Diluted earnings (loss) per share $ 0.60 $ 0.48 $ 1.67 $ 0.55 Weighted average number of anti-dilutive equity awards 485,706 120,500 173,084 531,610

Income Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company uses an estimated annual effective tax rate method in computing its interim tax provision. This effective tax rate is based on forecasted annual pre-tax income, permanent tax differences and statutory tax rates. The effective tax rates for the three months ended September 30, 2016 and 2015 were 35.5% and 34.9% , respectively. The increase in the effective tax rate for the third quarter of 2016 was primarily due to higher levels of pre-tax income, which is subject to the marginal tax rate and changes in permanent tax differences. The tax rate differs from the statutory rate due to the impact of tax benefits related to bank-owned life insurance, dividends received deductions and certain stock-based compensation awards. The effective tax rates for the nine months ended September 30, 2016 and 2015 were 36.1% and 5.7% , respectively. The increase in the effective tax rate for the nine months ended September 30, 2016 was primarily due to the prior year loss associated with the early termination of the FDIC loss share agreements and a deferred tax asset benefit associated with the revaluation of net unrealized built-in losses related to the Company’s acquisition of Great Florida Bank on January 31, 2014.

Stock-Based Compensation and Ot

Stock-Based Compensation and Other Benefit Plans	9 Months Ended
Stock-Based Compensation and Other Benefit Plans	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation and Other Benefit Plans	STOCK-BASED COMPENSATION AND OTHER BENEFIT PLANS 2009 Stock Option Plan Option grant activity for the period indicated is summarized as follows: 2009 Stock Option Plan Options Weighted Average Exercise Price Outstanding at January 1, 2016 3,707,898 $ 20.67 Granted — — Exercised (371,806 ) 20.64 Forfeited (36,824 ) 22.22 Expired (417 ) 22.97 Outstanding at September 30, 2016 3,298,851 20.65 Exercisable at September 30, 2016 3,031,954 20.59 Vested at September 30, 2016 3,031,954 20.59 Vested and expected to vest at September 30, 2016 3,298,851 20.65 The total unrecognized compensation cost of $1.0 million related to the 2009 Stock Option Plan for share awards outstanding at September 30, 2016 will be recognized over a weighted average remaining period of 1.05 years. 2013 Stock Incentive Plan Option grant activity for the period indicated is summarized as follows: 2013 Stock Incentive Plan Options Options Weighted Average Exercise Price Outstanding at January 1, 2016 2,367,187 $ 20.37 Granted 80,000 29.98 Exercised (211,010 ) 21.04 Forfeited (34,169 ) 23.03 Expired — — Outstanding at September 30, 2016 2,202,008 20.61 Exercisable at September 30, 2016 1,398,982 20.45 Vested at September 30, 2016 1,898,986 20.26 Vested and expected to vest at September 30, 2016 2,202,008 20.61 The total unrecognized compensation cost of $727 thousand related to the 2013 Stock Incentive Plan for share awards outstanding at September 30, 2016 will be recognized over a weighted average remaining period of 0.93 years. 2016 Stock Incentive Plan Option grant activity for the period indicated is summarized as follows: 2016 Stock Incentive Plan Options Options Weighted Average Exercise Price Outstanding at January 1, 2016 — $ — Granted 827,500 36.11 Exercised — — Forfeited — — Expired — — Outstanding at September 30, 2016 827,500 36.11 Exercisable at September 30, 2016 — — Vested at September 30, 2016 — — Vested and expected to vest at September 30, 2016 827,500 36.11 The total unrecognized compensation cost of $6.9 million related to the 2016 Stock Incentive Plan for share awards outstanding at September 30, 2016 will be recognized over a weighted average remaining period of 4.86 years . On March 29, 2016, the Compensation Committee granted 121,212 restricted shares (the "Award") of Class A Common Stock to certain Executives. Shareholder's approved the Plan at the 2016 Annual Meeting of Stockholders on May 16, 2016 which was determined to be the grant date of the Award. The fair value of the Awards on the grant date was $4.2 million and will be recognized as compensation expense over the requisite vesting period ending December 31, 2018. The Company recognized $836 thousand of compensation expense during the nine months ended September 30, 2016.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES The Company issues off-balance sheet financial instruments in connection with its lending activities and to meet the financing needs of its customers. These financial instruments include commitments to fund loans and lines of credit as well as commercial and standby letters of credit. These commitments expose the Company to varying degrees of credit and market risk which are essentially the same as those involved in extending loans to customers. The Company follows the same credit policies in making commitments as it does for instruments recorded on the Company’s consolidated balance sheet. Collateral is obtained based on management’s assessment of the customer’s credit risk. The Company’s exposure to credit loss is represented by the contractual amount of these commitments. As of September 30, 2016 and December 31, 2015 , the Company’s reserve for unfunded commitments totaled $1.6 million and $1.5 million , respectively. Fees collected on off-balance sheet financial instruments represent the fair value of those commitments and are deferred and amortized over their term. Financial Instruments Commitments Unfunded commitments are as follows: September 30, 2016 December 31, 2015 (Dollars in thousands) Commitments to fund loans $ 724,592 $ 578,730 Unused lines of credit 406,608 358,601 Commercial and standby letters of credit 23,451 14,410 Total $ 1,154,651 $ 951,741 Commitments to fund loans: Commitments to fund loans are agreements to lend funds to customers as long as there is no violation of any condition established in the contract. To accommodate the financial needs of customers, the Company makes commitments under various terms to lend funds to consumers and businesses. Commitments to fund loans generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of these commitments are expected to expire without being funded and, therefore, the total commitment amounts do not necessarily represent future liquidity requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral required in connection with a commitment to fund is based on management’s credit evaluation of the counterparty. Unused lines of credit: Unfunded commitments under lines of credit include commercial, commercial real estate, home equity and consumer lines of credit to existing customers. Some of these commitments may mature without being fully funded. Commercial and standby letters of credit: Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Letters of credit are primarily issued to support trade transactions or guarantee arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company generally holds collateral supporting those commitments if deemed necessary. Other Commitments and Contingencies Legal Proceedings The Company, from time to time, is involved as plaintiff or defendant in various legal actions arising in the normal course of business. While the ultimate outcome of any such proceedings cannot be predicted with certainty, it is the opinion of management, based upon advice of legal counsel, that no proceedings exist, either individually or in the aggregate, which, if determined adversely to the Company, would have a material effect on the Company’s consolidated balance sheet, results of operations or cash flows.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS When determining the fair value measurements for assets and liabilities and the related fair value hierarchy, the Company considers the principal or most advantageous market in which it would transact and the assumptions that market participants would use when pricing the asset or liability. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to market observable data for similar assets and liabilities. It is the Company’s policy to maximize the use of observable inputs, minimize the use of unobservable inputs and use unobservable inputs to measure fair value to the extent that observable inputs are not available. The need to use unobservable inputs generally results from the lack of market liquidity, resulting in diminished observability of both actual trades and assumptions that would otherwise be available to value instruments, or the value of underlying collateral is not market observable. Although third party price indications may be available for an asset or liability, limited trading activity would make it difficult to support the observability of these quotations. Financial Instruments Carried at Fair Value on a Recurring Basis The following is a description of the valuation methodologies used for financial instruments measured at fair value on a recurring basis, as well as the general classification of each instrument under the valuation hierarchy. Investment Securities—Investment securities available for sale are carried at fair value on a recurring basis. When available, fair value is based on quoted prices for the identical security in an active market and as such, would be classified as Level 1. If quoted market prices are not available, fair values are estimated using quoted prices of securities with similar characteristics, discounted cash flows or matrix pricing models. Investment securities available for sale for which Level 1 valuations are not available are classified as Level 2 if the valuation incorporates primarily observable inputs. Level 2 securities include U.S. Government agencies and sponsored enterprises obligations and agency mortgage-backed securities; state and municipal obligations; asset-backed securities; and corporate debt and other securities. Pricing of these securities is generally spread driven. Observable inputs that may impact the valuation of these securities include benchmark yield curves, credit spreads, reported trades, dealer quotes, bids, issuer spreads, current rating, historical constant prepayment rates, historical voluntary prepayment rates, structural and waterfall features of individual securities, published collateral data, and for certain securities, historical constant default rates and default severities. Interest Rate Derivatives—Interest rate derivatives are reported at estimated fair value utilizing Level 2 inputs and are included in other assets and other liabilities and consist of interest rate swaps where there is no significant deterioration in the counterparties (loan customers) credit risk since origination of the interest rate swap. The Company values its interest rate swap positions using market prices provided by a third party which uses primarily observable market inputs. Interest rate derivatives are further described in Note 6 “Derivatives.” For purposes of potential valuation adjustments to our derivative positions, the Company evaluates the credit risk of its counterparties as well as its own credit risk. Accordingly, the Company has considered factors such as the likelihood of default, expected loss given default, net exposures and remaining contractual life, among other things, in determining if any estimated fair value adjustments related to credit risk are required. The Company reviews counterparty exposure quarterly, and when necessary, appropriate adjustments are made to reflect the exposure. For the three and nine months ended September 30, 2016 or 2015, the Company has not realized any losses due to a counterparty’s inability to pay any net uncollateralized position. As of September 30, 2016 , there were no interest rate derivatives classified as Level 3. The following table presents the assets and liabilities measured at fair value on a recurring basis: September 30, 2016 Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets: U.S. Government agencies and sponsored enterprises obligations $ — $ 16,539 $ — $ 16,539 U.S. Government agencies and sponsored enterprises mortgage-backed securities — 432,913 — 432,913 State and municipal obligations — 10,966 — 10,966 Asset-backed securities — 498,414 — 498,414 Corporate bonds and other debt securities 58,240 509,066 — 567,306 Preferred stocks and other equity securities 7,135 138,816 — 145,951 Derivative assets - Interest rate contracts — 44,057 — 44,057 Total $ 65,375 $ 1,650,771 $ — $ 1,716,146 Liabilities: Derivative liabilities - Interest rate contracts $ — $ 44,057 $ — $ 44,057 Total $ — $ 44,057 $ — $ 44,057 December 31, 2015 Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets: U.S. Government agencies and sponsored enterprises obligations $ — $ 20,888 $ — $ 20,888 U.S. Government agencies and sponsored enterprises mortgage-backed securities — 393,115 — 393,115 State and municipal obligations — 2,215 — 2,215 Asset-backed securities — 493,934 — 493,934 Corporate bonds and other debt securities — 444,895 — 444,895 Preferred stocks and other equity securities 2,052 167,523 — 169,575 Derivative assets - Interest rate contracts — 21,553 — 21,553 Total $ 2,052 $ 1,544,123 $ — $ 1,546,175 Liabilities: Derivative liabilities - Interest rate contracts $ — $ 21,553 $ — $ 21,553 Total $ — $ 21,553 $ — $ 21,553 There were $58.2 million in transfers of financial assets from level 2 into level 1 of the fair value hierarchy during the nine months ended September 30, 2016 . There were no transfers of financial assets between levels of the fair value hierarchy during the nine months ended September 30, 2015. For the three or nine months ended September 30, 2016 and 2015, there was not a change in the methods or significant assumptions used to estimate fair value. Financial Instruments Measured at Fair Value on a Non-Recurring Basis The following is a description of the methodologies used to estimate the fair values of assets and liabilities measured at fair value on a non-recurring basis, and the level within the fair value hierarchy in which those measurements are typically classified. Impaired loans and OREO—The carrying amount of collateral dependent impaired loans is typically based on the fair value of the underlying collateral, which may be real estate or other business assets, less estimated costs to sell. The carrying value of OREO is initially measured based on the fair value, less estimated cost to sell, of the real estate acquired in foreclosure and subsequently adjusted to the lower of cost or estimated fair value, less estimated cost to sell. Fair values of real estate collateral are typically based on real estate appraisals which utilize market and income valuation techniques incorporating both observable and unobservable inputs. When current appraisals are not available, the Company may use brokers’ price opinions, home price indices, or other available information about changes in real estate market conditions to adjust the latest appraised value available. These adjustments to appraised values may be subjective and involve significant management judgment. The fair value of collateral consisting of other business assets is generally based on appraisals that use market approaches to valuation, incorporating primarily unobservable inputs. Fair value measurements related to collateral dependent impaired loans and OREO are classified within level 3 of the fair value hierarchy. The following table shows significant unobservable inputs used in the non-recurring fair value measurement of level 3 assets and liabilities: Level 3 Assets: September 30, 2016 December 31, 2015 Valuation Technique Unobservable Inputs Range (Dollars in thousands) Impaired loans $ 12,006 $ 9,582 Third party appraisals and discounted cash flows Collateral discounts and discount rates 3.5% - 10% Other real estate owned 25,654 39,340 Third party appraisals Collateral discounts and estimated cost to sell 10 % The following tables provide information about certain assets measured at fair value on a non-recurring basis: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands) Negative valuation adjustments: Impaired loans $ 156 $ — $ 222 $ 1,011 Foreclosed real estate 225 122 1,120 242 Impairment charges resulting from the non-recurring changes in fair value of the underlying collateral of impaired loans are included in the provision for loan losses in the consolidated statement of income. Impairment charges resulting from the non-recurring changes in fair value of OREO are included in other real estate and acquired assets resolution expenses in the consolidated statement of income. The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments are as follows: September 30, 2016 Carrying Value Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 87,334 $ 87,334 $ 87,334 $ — $ — Available for sale securities 1,672,089 1,672,089 65,375 1,606,714 — FHLB and other bank stock 43,486 43,486 — 43,486 — Loans, net 6,233,708 6,284,628 — — 6,284,628 Loans held for sale 15,748 15,748 — 15,748 — Bank-owned life insurance 172,105 172,105 — 172,105 — Derivative assets - Interest rate contracts 44,057 44,057 — 44,057 — Financial Liabilities: Deposits $ 6,917,563 $ 6,921,862 $ — $ 6,921,862 $ — Advances from the FHLB and other borrowings 568,175 569,739 — 569,739 — Derivative liabilities - Interest rate contracts 44,057 44,057 — 44,057 — December 31, 2015 Carrying Value Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 102,460 $ 102,460 $ 102,460 $ — $ — Available for sale securities 1,524,622 1,524,622 2,052 1,522,570 — FHLB and other bank stock 59,477 59,477 — 59,477 — Loans, net 5,164,061 5,207,971 — — 5,207,971 Loans held for sale 2,514 2,514 — 2,514 — Bank-owned life insurance 168,246 168,246 — 168,246 — Derivative assets - Interest rate contracts 21,553 21,553 — 21,553 — Financial Liabilities: Deposits $ 5,430,638 $ 5,430,501 $ — $ 5,430,501 $ — Advances from the FHLB and other borrowings 983,183 981,997 — 981,997 — Derivative liabilities - Interest rate contracts 21,553 21,553 — 21,553 — Certain financial instruments are carried at amounts that approximate fair value due to their short-term nature and generally negligible credit risk. Financial instruments for which fair value approximates the carrying amount at September 30, 2016 and December 31, 2015 , include cash and cash equivalents. The following methods and assumptions were used to estimate the fair value of each class of financial instruments. Estimates may differ from actual exit value as defined by ASC 820. FHLB and Other Bank Stock: FHLB and other bank stock can be liquidated only by redemption by the issuer, as there is no market for these securities. These securities are carried at par, which has historically represented the redemption price and is therefore considered to approximate fair value. Loans: Fair values for loans are based on a discounted cash flow methodology that considers various factors, including the type of loan and related collateral, classification status, fixed or variable interest rate, term of loan, whether or not the loan was amortizing and current discount rates. Loans are grouped together according to similar characteristics and are treated in the aggregate when applying various valuation techniques. The discount rates used for loans are based on current market rates for new originations of comparable credit risk and include adjustments for liquidity concerns. The ALL is considered a reasonable estimate of the required adjustment to fair value to reflect the impact of credit risk. Loans Held for Sale: Fair values of mortgage loans held for sale are based on commitments on hand from investors or prevailing market prices. Bank-owned Life Insurance: The Company holds life insurance policies on certain officers. The carrying value of these policies approximates fair value as it is based on the cash surrender value adjusted for other charges or amounts due that are probable at settlement. Deposits: The fair value of demand deposits, savings accounts and money market deposits is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated using discounted cash flow analysis and using the rates currently offered for deposits of similar remaining maturities. Advances from the FHLB and Other Borrowings: The fair value of advances from the FHLB and other borrowings are estimated by discounting the future cash flows using the current rate at which similar borrowings with similar remaining maturities could be obtained.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2016
Accounting Policies [Abstract]
General	General The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all information and notes to the consolidated financial statements necessary for a complete presentation of financial position, results of operations, comprehensive income and cash flows in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”) and should be read in conjunction with the audited consolidated financial statements and the notes thereto for FCB Financial Holdings, Inc. (the “Company”) previously filed with the SEC in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
Nature of Operations	Nature of Operations The Company is a national bank holding company with one wholly-owned national bank subsidiary, Florida Community Bank, N.A. (“Florida Community Bank” or the “Bank”), headquartered in Weston, Florida, offering a comprehensive range of traditional banking products and services to individual and corporate customers through 48 banking centers located in Florida at September 30, 2016 .
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiary, the Bank, and the Bank’s subsidiaries, which consist of a group of real estate holding companies. Intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	Use of Estimates The Company’s financial reporting and accounting policies conform to U.S. GAAP. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates subject to significant change include the allowance for loan losses, valuation of and accounting for loans covered by loss sharing arrangements with the FDIC and the related loss share receivable, valuation of and accounting for acquired loans, the carrying value of OREO, the fair value of financial instruments, the valuation of goodwill and other intangible assets, contingent consideration liabilities, acquisition-related fair value computations, stock-based compensation and deferred taxes.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In June 2014, the FASB issued ASU No. 2014-12, “Compensation- Stock Compensation (Topic 718) —Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period”. This ASU provides specific guidance on whether to treat a performance target that could be achieved after the requisite service period as a performance condition that affects vesting or as a non-vesting condition that affects the grant-date fair value of an award. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In November 2014, the FASB issued ASU No. 2014-16, “Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or Equity – a consensus of the FASB Emerging Issues Task Force (ASC 815, Derivatives and Hedging)”. This ASU requires an entity to determine the nature of an instrument by evaluating all economic characteristics and risks of the entire hybrid instrument when determining whether the host is more akin to debit or equity. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In January 2015, the FASB issued ASU No. 2015-01, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items (ASC 225-20, Extraordinary and Unusual Items)” which eliminates the concept of extraordinary items. Under the ASU, extraordinary items will no longer be segregated from the results of ordinary operations and presented separately on the consolidated financial statements. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In February 2015, the FASB issued ASU No. 2015-02, “Amendments to the Consolidated Analysis (ASC 810, Consolidation)” which amends the consolidation requirements of ASC 810 by reducing the number of consolidation models. The guidance places more emphasis on risk of loss when determining a controlling financial interest; reduces the frequency of the application of related-party guidance when determining a controlling financial interest and changes the consolidation requirements of limited partnerships. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” which requires an acquirer to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments in this ASU require that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The amendments in this ASU became effective for the first quarter ended March 31, 2016. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” which: • Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. • Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value. • Eliminates the requirement for public business entities to disclose the method(s) 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. • Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. • Requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. • Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements. • Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. For public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early application by public business entities to financial statements of fiscal years or interim periods that have not yet been issued or, by all other entities, that have not yet been made available for issuance of the following amendments in this ASU are permitted as of the beginning of the fiscal year of adoption: 1. An entity should present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk if the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. 2. Entities that are not public business entities are not required to apply the fair value of financial instruments disclosure guidance in the General Subsection of Section 825-10-50. Except for the early application guidance discussed above, early adoption of the amendments in this ASU is not permitted. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption of the ASU. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842)” which created Topic 842, Leases, and supersedes the leases requirements in Topic 840, Leases. Topic 842 specifies the accounting for leases. The core principal of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities. For public entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the amendments in this ASU is permitted. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-06, “Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments” which clarifies the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this ASU is required to assess the embedded call (put) options solely in accordance with the four-stop decision sequence. The amendments are an improvement to GAAP because they eliminate diversity in practice in assessing embedded contingent call (put) options in debt instruments. For public business entities, the amendments in this ASU are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. An entity should apply the amendments in this ASU on a modified retrospective basis to existing debt instruments as of the beginning of the fiscal year for which the amendments are effective. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-07, “Investments-Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting” which eliminate the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The amendments require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. The amendments in this ASU require that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. The amendments in this ASU are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company does not believe the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. In March 2016, the FASB issued ASU No. 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” which simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. This ASU eliminates equity treatment for tax benefits or deficiencies that result from differences between the compensation cost recognized for GAAP purposes and the related tax deduction at settlement or expiration with such changes recognized in income tax expense and excludes excess tax benefits and tax deficiencies from the calculation of assumed proceeds for earnings per share purposes since such amounts are recognized in the income statement, which will result in greater volatility in earnings per share. In addition, this ASU simplifies the statements of cash flows by eliminating the bifurcation of excess tax benefits from operating activities to financing activities. Upon adoption, the amendments in this ASU provide for a tiered transition approach whereby amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements and forfeitures should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. Amendments related to the presentation of employee taxes paid on the statement of cash flows when an employer withholds shares to meet the minimum statutory withholding requirement should be applied retrospectively. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement should be applied prospectively. An entity may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. This ASU is effective for annual reporting periods beginning after December 15, 2016, and interim periods within those annual periods with early adoption permitted. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In May 2016, the FASB issued ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing.” The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the following two aspects of Topic 606: identifying performance obligations and the licensing implementation guidance, while retaining the related principles for those areas. The amendments in this ASU affect the guidance in ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606 (and any other Topic amended by ASU 2014-09). ASU 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, deferred the effective date of ASU 2014-09 by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In May 2016, the FASB issued ASU No. 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients.” The amendments in this ASU do not change the core principle of the guidance in Topic 606. Rather, the amendments in this ASU clarify the guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition. The amendments in this ASU affect the guidance in ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which is not yet effective. The effective date and transition requirements for the amendments in this ASU are the same as the effective date and transition requirements in Topic 606 (and any other Topic amended by ASU 2014-09). ASU 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, deferred the effective date of ASU 2014-09 by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit losses (Topic 326): Measurement of credit losses on financial instruments.” Topic 326 amends guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the probable initial recognition threshold in current GAAP and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. This ASU affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities that are SEC filers, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. For all other public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. All entities may adopt the amendments in this ASU earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. An entity will apply the amendments in this ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). A prospective transition approach is required for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The effect of a prospective transition approach is to maintain the same amortized cost basis before and after the effective date of this ASU. Amounts previously recognized in accumulated other comprehensive income as of the date of adoption that relate to improvements in cash flows expected to be collected should continue to be accreted into income over the remaining life of the asset. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption should be recorded in earnings when received. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows. In August 2016, the FASB issued ASU No. 2016-15, "Statement of cash flows (Topic 230): Classification of certain cash receipts and cash payments." The objective of this guidance is to reduce the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows under Topic 230, Statement of Cash Flows, and other Topics. This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (COLIs) (including bank-owned life insurance policies (BOLIs)); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments in this ASU should be applied using a retrospective transition method to each period presented. The Company is currently evaluating this guidance to determine the impact on its consolidated financial position, results of operations or cash flows.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
Investment Securities (Tables)	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost, Gross Unrealized Gains and Losses and Approximate Fair Values of Securities Available for Sale	The amortized cost, gross unrealized gains and losses and approximate fair values of securities available for sale are as follows: Amortized Cost Unrealized Fair Value September 30, 2016 Gains Losses (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 16,542 $ 158 $ 161 $ 16,539 U.S. Government agencies and sponsored enterprises mortgage-backed securities 422,358 10,829 274 432,913 State and municipal obligations 10,741 225 — 10,966 Asset-backed securities 497,109 2,702 1,397 498,414 Corporate bonds and other debt securities 554,514 15,491 2,699 567,306 Preferred stock and other equity securities 144,474 1,572 95 145,951 Total available for sale $ 1,645,738 $ 30,977 $ 4,626 $ 1,672,089 Amortized Cost Unrealized Fair Value December 31, 2015 Gains Losses (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 20,930 $ 100 $ 142 $ 20,888 U.S. Government agencies and sponsored enterprises mortgage-backed securities 392,123 2,587 1,595 393,115 State and municipal obligations 2,041 174 — 2,215 Asset-backed securities 503,240 383 9,689 493,934 Corporate bonds and other debt securities 450,489 1,596 7,190 444,895 Preferred stock and other equity securities 171,170 1,153 2,748 169,575 Total available for sale $ 1,539,993 $ 5,993 $ 21,364 $ 1,524,622
Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale	The amortized cost and estimated fair value of securities available for sale, by contractual maturity, are as follows: September 30, 2016 Amortized Cost Fair Value (Dollars in thousands) Available for sale: Due in one year or less $ — $ — Due after one year through five years 182,483 182,922 Due after five years through ten years 91,492 93,451 Due after ten years 291,280 301,899 U.S. Government agencies and sponsored enterprises obligations, mortgage-backed securities and asset-backed securities 936,009 947,866 Preferred stock and other equity securities 144,474 145,951 Total available for sale $ 1,645,738 $ 1,672,089
Summary of Estimated Fair Values and Gross Unrealized Losses on Investment Securities Available for Sale	The following tables present the estimated fair values and gross unrealized losses on investment securities available for sale, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position as of the periods presented: Less than 12 Months 12 Months or More Total September 30, 2016 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 11,724 $ 161 $ — $ — $ 11,724 $ 161 U.S. Government agencies and sponsored enterprises mortgage-backed securities 14,220 53 12,782 221 27,002 274 State and municipal obligations — — — — — — Asset-backed securities 3,841 4 91,524 1,393 95,365 1,397 Corporate bonds and other debt securities 71,720 543 85,185 2,156 156,905 2,699 Preferred stock and other equity securities 33,783 19 5,069 76 38,852 95 Total available for sale $ 135,288 $ 780 $ 194,560 $ 3,846 $ 329,848 $ 4,626 Less than 12 Months 12 Months or More Total December 31, 2015 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss (Dollars in thousands) Available for sale: U.S. Government agencies and sponsored enterprises obligations $ 15,687 $ 142 $ — $ — $ 15,687 $ 142 U.S. Government agencies and sponsored enterprises mortgage-backed securities 225,109 1,391 12,584 204 237,693 1,595 State and municipal obligations — — — — — — Asset-backed securities 354,912 6,290 78,112 3,399 433,024 9,689 Corporate bonds and other debt securities 347,302 7,190 — — 347,302 7,190 Preferred stock and other equity securities 96,543 1,740 19,000 1,008 115,543 2,748 Total available for sale $ 1,039,553 $ 16,753 $ 109,696 $ 4,611 $ 1,149,249 $ 21,364
Summary of Gross Realized Gains and Losses on Sale of Securities Available for Sale	Gross realized gains and losses on the sale of securities available for sale are shown below. The cost of securities sold is based on the specific identification method. Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands) Gross realized gains $ 1,074 $ 104 $ 2,283 $ 2,065 Gross realized losses (386 ) (106 ) (1,382 ) (1,019 ) Net realized gains (losses) $ 688 $ (2 ) $ 901 $ 1,046

Loans, Net (Tables)

Loans, Net (Tables)	9 Months Ended
Loans, Net (Tables)	Sep. 30, 2016
Receivables [Abstract]
Schedule of Loans by Portfolio and Segment	The following tables summarize the Company’s loans by portfolio and segment as of the periods presented, net of deferred fees, costs, premiums and discounts: September 30, 2016 ASC 310-30 Loans Non-ASC 310-30 Loans New Loans (1) Total (Dollars in thousands) Real estate loans: Commercial real estate $ 160,219 $ 39,769 $ 1,272,150 $ 1,472,138 Owner-occupied commercial real estate — 20,042 596,131 616,173 1-4 single family residential 34,329 71,302 1,982,340 2,087,971 Construction, land and development 25,156 6,338 639,626 671,120 Home equity loans and lines of credit — 43,096 47,508 90,604 Total real estate loans $ 219,704 $ 180,547 $ 4,537,755 $ 4,938,006 Other loans: Commercial and industrial $ 21,985 $ 7,001 $ 1,295,324 $ 1,324,310 Consumer 2,074 423 4,680 7,177 Total other loans 24,059 7,424 1,300,004 1,331,487 Total loans held in portfolio $ 243,763 $ 187,971 $ 5,837,759 $ 6,269,493 Allowance for loan losses (35,785 ) Loans held in portfolio, net $ 6,233,708 December 31, 2015 ASC 310-30 Loans Non-ASC 310-30 Loans New Loans (1) Total (Dollars in thousands) Real estate loans: Commercial real estate $ 247,628 $ 55,985 $ 998,141 $ 1,301,754 Owner-occupied commercial real estate — 21,101 524,728 545,829 1-4 single family residential 40,922 84,111 1,541,255 1,666,288 Construction, land and development 28,017 6,338 537,494 571,849 Home equity loans and lines of credit — 49,407 30,945 80,352 Total real estate loans $ 316,567 $ 216,942 $ 3,632,563 $ 4,166,072 Other loans: Commercial and industrial $ 36,783 $ 9,312 $ 972,803 $ 1,018,898 Consumer 2,390 430 5,397 8,217 Total other loans 39,173 9,742 978,200 1,027,115 Total loans held in portfolio $ 355,740 $ 226,684 $ 4,610,763 $ 5,193,187 Allowance for loan losses (29,126 ) Loans held in portfolio, net $ 5,164,061 (1) Balance includes $5.0 million and $7.1 million of deferred fees, costs, and premium and discount as of September 30, 2016 and December 31, 2015 , respectively.
Summary of Changes in Accretable Discount for ASC 310-30 Loans	Changes in accretable discount for ASC 310-30 loans for the nine months ended September 30, 2016 and 2015 , were as follows: Nine Months Ended September 30, 2016 2015 (Dollars in thousands) Balance at January 1, $ 144,152 $ 156,197 Accretion (42,722 ) (38,273 ) Reclassifications from (to) non-accretable difference (23,207 ) 28,638 Balance at September 30, $ 78,223 $ 146,562

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	9 Months Ended
Allowance for Loan Losses (Tables)	Sep. 30, 2016
Receivables [Abstract]
Summary of Changes in Allowance for Loan Losses by Loan Class and Portfolio Segment	Changes in the ALL by loan portfolio and segment for the three and nine months ended September 30, 2016 and 2015 are as follows: Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at July 1, 2016 $ 9,745 $ 2,252 $ 7,439 $ 3,763 $ 615 $ 9,465 $ 427 $ 33,706 Provision (credit) for ASC 310-30 loans 110 — 2 (81 ) — (25 ) (11 ) (5 ) Provision (credit) for non-ASC 310-30 loans (68 ) (56 ) 27 7 1 64 5 (20 ) Provision (credit) for New loans 111 141 (639 ) 998 19 1,332 53 2,015 Total provision 153 85 (610 ) 924 20 1,371 47 1,990 Charge-offs for ASC 310-30 loans — — (31 ) — — — (4 ) (35 ) Charge-offs for non-ASC 310-30 loans — — — — — — — — Charge-offs for New loans — — — — — — — — Total charge-offs — — (31 ) — — — (4 ) (35 ) Recoveries for ASC 310-30 loans 106 — — 10 — — — 116 Recoveries for non-ASC 310-30 loans — — — — 8 — — 8 Recoveries for New loans — — — — — — — — Total recoveries 106 — — 10 8 — — 124 Ending ALL balance ASC 310-30 loans 2,330 — 29 277 — 341 369 3,346 Non-ASC 310-30 loans 867 284 309 44 282 119 9 1,914 New loans 6,807 2,053 6,460 4,376 361 10,376 92 30,525 Balance at September 30, 2016 $ 10,004 $ 2,337 $ 6,798 $ 4,697 $ 643 $ 10,836 $ 470 $ 35,785 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at July 1, 2015 $ 9,652 $ 1,548 $ 5,744 $ 3,024 $ 563 $ 6,059 $ 456 $ 27,046 Provision (credit) for ASC 310-30 loans (791 ) — (38 ) (310 ) — (67 ) 30 (1,176 ) Provision (credit) for non-ASC 310-30 loans (110 ) 14 11 (20 ) 74 41 6 16 Provision (credit) for New loans (390 ) 45 203 251 41 1,712 (27 ) 1,835 Total provision (1,291 ) 59 176 (79 ) 115 1,686 9 675 Charge-offs for ASC 310-30 loans (65 ) — (224 ) — — (57 ) — (346 ) Charge-offs for non-ASC 310-30 loans — — — — (37 ) — (8 ) (45 ) Charge-offs for New loans — — — — — — — — Total charge-offs (65 ) — (224 ) — (37 ) (57 ) (8 ) (391 ) Recoveries for ASC 310-30 loans — — 18 18 — 23 — 59 Recoveries for non-ASC 310-30 loans — — — — — — — — Recoveries for New loans — — — — — 5 — 5 Total recoveries — — 18 18 — 28 — 64 Ending ALL balance ASC 310-30 loans 1,729 — 26 501 — 1,032 417 3,705 Non-ASC 310-30 loans 1,265 68 346 36 469 82 4 2,270 New loans 5,302 1,539 5,342 2,426 172 6,602 36 21,419 Balance at September 30, 2015 $ 8,296 $ 1,607 $ 5,714 $ 2,963 $ 641 $ 7,716 $ 457 $ 27,394 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at January 1, 2016 $ 8,450 $ 2,243 $ 6,425 $ 3,404 $ 483 $ 7,665 $ 456 $ 29,126 Provision (credit) for ASC 310-30 loans (83 ) — 3 (90 ) — (47 ) (31 ) (248 ) Provision (credit) for non-ASC 310-30 loans (1,021 ) (178 ) (23 ) 8 18 59 11 (1,126 ) Provision (credit) for New loans 1,339 273 393 1,336 169 3,224 46 6,780 Total provision 235 95 373 1,254 187 3,236 26 5,406 Charge-offs for ASC 310-30 loans (352 ) — (31 ) (33 ) — (76 ) (6 ) (498 ) Charge-offs for non-ASC 310-30 loans — (1 ) — — (35 ) — (6 ) (42 ) Charge-offs for New loans — — — — — — — — Total charge-offs (352 ) (1 ) (31 ) (33 ) (35 ) (76 ) (12 ) (540 ) Recoveries for ASC 310-30 loans 867 — 31 72 — 11 — 981 Recoveries for non-ASC 310-30 loans 804 — — — 8 — — 812 Recoveries for New loans — — — — — — — — Total recoveries 1,671 — 31 72 8 11 — 1,793 Ending ALL balance ASC 310-30 loans 2,330 — 29 277 — 341 369 3,346 Non-ASC 310-30 loans 867 284 309 44 282 119 9 1,914 New loans 6,807 2,053 6,460 4,376 361 10,376 92 30,525 Balance at September 30, 2016 $ 10,004 $ 2,337 $ 6,798 $ 4,697 $ 643 $ 10,836 $ 470 $ 35,785 Commercial Real Estate Owner- Occupied Commercial Real Estate 1-4 Single Family Residential Construction, Land and Development Home Equity Loans and Lines of Credit Commercial and Industrial Consumer Total (Dollars in thousands) Balance at January 1, 2015 $ 8,206 $ 1,020 $ 4,740 $ 2,456 $ 355 $ 5,745 $ 358 $ 22,880 Provision (credit) for ASC 310-30 loans (1,656 ) — (37 ) (508 ) — 52 187 (1,962 ) Provision (credit) for non-ASC 310-30 loans 770 10 60 (39 ) 221 33 6 1,061 Provision (credit) for New loans 846 577 1,341 703 102 1,852 (26 ) 5,395 Total provision (40 ) 587 1,364 156 323 1,937 167 4,494 Charge-offs for ASC 310-30 loans (270 ) — (431 ) (56 ) — (132 ) (60 ) (949 ) Charge-offs for non-ASC 310-30 loans — — (128 ) — (37 ) — (8 ) (173 ) Charge-offs for New loans — — — — — — — — Total charge-offs (270 ) — (559 ) (56 ) (37 ) (132 ) (68 ) (1,122 ) Recoveries for ASC 310-30 loans 400 — 169 407 — 154 — 1,130 Recoveries for non-ASC 310-30 loans — — — — — — — — Recoveries for New loans — — — — — 12 — 12 Total recoveries 400 — 169 407 — 166 — 1,142 Ending ALL balance ASC 310-30 loans 1,729 — 26 501 — 1,032 417 3,705 Non-ASC 310-30 loans 1,265 68 346 36 469 82 4 2,270 New loans 5,302 1,539 5,342 2,426 172 6,602 36 21,419 Balance at September 30, 2015 $ 8,296 $ 1,607 $ 5,714 $ 2,963 $ 641 $ 7,716 $ 457 $ 27,394
Summary of Aging Analysis of Recorded Investment for Loans by Portfolio and Segment	The following tables present an aging analysis of the recorded investment for delinquent loans by portfolio and segment (excluding loans accounted for under ASC 310-30): Accruing September 30, 2016 30 to 59 Days Past Due 60 to 89 Days Past Due 90 Days or More Past Due Non- Accrual Total (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ 581 $ — $ — $ — $ 581 Owner-occupied commercial real estate — — — — — 1-4 single family residential — 722 — 698 1,420 Construction, land and development — — — — — Home equity loans and lines of credit — — — 63 63 Total real estate loans 581 722 — 761 2,064 Other loans: Commercial and industrial — — — — — Consumer — — — — — Total other loans — — — — — Total new loans $ 581 $ 722 $ — $ 761 $ 2,064 Acquired loans: Real estate loans: Commercial real estate $ — $ — $ — $ 4,773 $ 4,773 Owner-occupied commercial real estate 528 — — 2,158 2,686 1-4 single family residential 153 — — 2,649 2,802 Construction, land and development — — — — — Home equity loans and lines of credit 58 20 — 2,430 2,508 Total real estate loans 739 20 — 12,010 12,769 Other loans: Commercial and industrial 177 — — 687 864 Consumer — — — — — Total other loans 177 — — 687 864 Total acquired loans $ 916 $ 20 $ — $ 12,697 $ 13,633 Accruing December 31, 2015 30 to 59 Days Past Due 60 to 89 Days Past Due 90 Days or More Past Due Non- Accrual Total (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — 113 — — 113 1-4 single family residential 9,439 869 — 1,454 11,762 Construction, land and development 467 — — — 467 Home equity loans and lines of credit 64 — — — 64 Total real estate loans 9,970 982 — 1,454 12,406 Other loans: Commercial and industrial — — — — — Consumer — — — — — Total other loans — — — — — Total new loans $ 9,970 $ 982 $ — $ 1,454 $ 12,406 Acquired Loans: Real estate loans: Commercial real estate $ 63 $ — $ — $ 5,282 $ 5,345 Owner-occupied commercial real estate — 95 — 2,247 2,342 1-4 single family residential 1,393 697 — 3,016 5,106 Construction, land and development — — — — — Home equity loans and lines of credit 490 97 — 2,295 2,882 Total real estate loans 1,946 889 — 12,840 15,675 Other loans: Commercial and industrial 90 — — 877 967 Consumer — — — 23 23 Total other loans 90 — — 900 990 Total acquired loans $ 2,036 $ 889 $ — $ 13,740 $ 16,665
Summary of Commercial Non-ASC 310-30 and New Loans by Key Indicators of Credit Quality	The following table summarizes the Company’s commercial Non-ASC 310-30 and New loans by key indicators of credit quality. Loans accounted for under ASC 310-30 are excluded from the following analysis because their related allowance is determined by loan pool performance: September 30, 2016 Pass Special Mention Substandard Doubtful (Dollars in thousands) New loans: Commercial real estate $ 1,272,150 $ — $ — $ — Owner-occupied commercial real estate 595,956 175 — — Construction, land and development 639,626 — — — Commercial and industrial 1,295,324 — — — Total new loans $ 3,803,056 $ 175 $ — $ — Acquired loans: Commercial real estate $ 34,632 $ — $ 5,137 $ — Owner-occupied commercial real estate 17,884 — 2,158 — Construction, land and development 6,338 — — — Commercial and industrial 5,955 — 1,046 — Total acquired loans $ 64,809 $ — $ 8,341 $ — December 31, 2015 Pass Special Substandard Doubtful (Dollars in thousands) New loans: Commercial real estate $ 998,141 $ — $ — $ — Owner-occupied commercial real estate 524,728 — — — Construction, land and development 537,494 — — — Commercial and industrial 972,803 — — — Total new loans $ 3,033,166 $ — $ — $ — Acquired loans: Commercial real estate $ 50,328 $ — $ 5,657 $ — Owner-occupied commercial real estate 18,854 — 2,247 — Construction, land and development 6,338 — — — Commercial and industrial 6,715 1,352 1,245 — Total acquired loans $ 82,235 $ 1,352 $ 9,149 $ —
Summary of Loans Based on Method for Determining Allowance	The following table shows the Company’s investment in loans disaggregated based on the method of evaluating impairment: Loans - Recorded Investment Allowance for Credit Loss September 30, 2016 Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ 1,272,150 $ — $ — $ 6,807 $ — Owner-occupied commercial real estate — 596,131 — — 2,053 — 1-4 single family residential 524 1,981,816 — — 6,460 — Construction, land and development — 639,626 — — 4,376 — Home equity loans and lines of credit 66 47,442 — 66 361 — Total real estate loans $ 590 $ 4,537,165 $ — $ 66 $ 20,057 $ — Other loans: Commercial and industrial $ — $ 1,295,324 $ — $ — $ 10,376 $ — Consumer — 4,680 — — 92 — Total other loans $ — $ 1,300,004 $ — $ — $ 10,468 $ — Acquired loans: Real estate loans: Commercial real estate $ 4,773 $ 34,996 $ 160,219 $ 688 $ 179 $ 2,330 Owner-occupied commercial real estate 2,068 17,974 — 223 61 — 1-4 single family residential 2,833 68,469 34,329 88 221 29 Construction, land and development — 6,338 25,156 — 44 277 Home equity loans and lines of credit 1,055 42,041 — — 282 — Total real estate loans $ 10,729 $ 169,818 $ 219,704 $ 999 $ 787 $ 2,636 Other loans: Commercial and industrial $ 687 $ 6,314 $ 21,985 $ 68 $ 51 $ 341 Consumer — 423 2,074 — 9 369 Total other loans $ 687 $ 6,737 $ 24,059 $ 68 $ 60 $ 710 Loans - Recorded Investment Allowance for Credit Loss December 31, 2015 Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment ASC 310- 30 Loans (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ 998,141 $ — $ — $ 5,468 $ — Owner-occupied commercial real estate — 524,728 — — 1,780 — 1-4 single family residential — 1,541,255 — — 6,067 — Construction, land and development — 537,494 — — 3,040 — Home equity loans and lines of credit — 30,945 — — 192 — Total real estate loans $ — $ 3,632,563 $ — $ — $ 16,547 $ — Other loans: Commercial and industrial $ — $ 972,803 $ — $ — $ 7,152 $ — Consumer — 5,397 — — 46 — Total other loans $ — $ 978,200 $ — $ — $ 7,198 $ — Acquired Loans: Real estate loans: Commercial real estate $ 5,282 $ 50,703 $ 247,628 $ 829 $ 255 $ 1,898 Owner-occupied commercial real estate 2,244 18,857 — 399 64 — 1-4 single family residential 263 83,848 40,922 — 332 26 Construction, land and development — 6,338 28,017 — 36 328 Home equity loans and lines of credit 916 48,491 — — 291 — Total real estate loans $ 8,705 $ 208,237 $ 316,567 $ 1,228 $ 978 $ 2,252 Other loans: Commercial and industrial $ 877 $ 8,435 $ 36,783 $ — $ 60 $ 453 Consumer — 430 2,390 — 4 406 Total other loans $ 877 $ 8,865 $ 39,173 $ — $ 64 $ 859
Summary of Company's Impaired Loans Evaluated for Specific Reserves	The following tables set forth certain information regarding the Company’s impaired loans (excluding loans accounted for under ASC 310-30) that were evaluated for specific reserves: Impaired Loans - With Allowance Impaired Loans - With no Allowance September 30, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — — — — — 1-4 single family residential — — — 524 524 Construction, land and development — — — — — Home equity loans and lines of credit 66 66 66 — — Total real estate loans $ 66 $ 66 $ 66 $ 524 $ 524 Other loans: Commercial and industrial $ — $ — $ — $ — $ — Consumer — — — — — Total other loans $ — $ — $ — $ — $ — Acquired loans: Real estate loans: Commercial real estate $ 4,414 $ 4,921 $ 688 $ 359 $ 397 Owner-occupied commercial real estate 2,068 2,241 223 — — 1-4 single family residential 565 512 88 1,951 2,268 Construction, land and development — — — — — Home equity loans and lines of credit — — — 1,055 1,415 Total real estate loans $ 7,047 $ 7,674 $ 999 $ 3,365 $ 4,080 Other loans: Commercial and industrial $ 345 $ 345 $ 68 $ 342 $ 1,075 Consumer — — — — — Total other loans $ 345 $ 345 $ 68 $ 342 $ 1,075 Impaired Loans - With Allowance Impaired Loans - With no Allowance December 31, 2015 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance (Dollars in thousands) New loans: Real estate loans: Commercial real estate $ — $ — $ — $ — $ — Owner-occupied commercial real estate — — — — — 1-4 single family residential — — — — — Construction, land and development — — — — — Home equity loans and lines of credit — — — — — Total real estate loans $ — $ — $ — $ — $ — Other loans: Commercial and industrial $ — $ — $ — $ — $ — Consumer — — — — — Total other loans $ — $ — $ — $ — $ — Acquired loans: Real estate loans: Commercial real estate $ 4,555 $ 4,924 $ 829 $ 727 $ 750 Owner-occupied commercial real estate 2,244 2,310 399 — — 1-4 single family residential — — — 263 264 Construction, land and development — — — — — Home equity loans and lines of credit — — — 916 1,048 Total real estate loans $ 6,799 $ 7,234 $ 1,228 $ 1,906 $ 2,062 Other loans: Commercial and industrial $ — $ — $ — $ 877 $ 1,825 Consumer — — — — — Total other loans $ — $ — $ — $ 877 $ 1,825
Summary of Impaired Loans Average Recorded Investment and Interest Income Recognized	Three Months Ended September 30, 2016 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) Impaired loans with no related allowance: Real estate loans: Commercial real estate $ 386 $ — $ 231 $ — Owner-occupied commercial real estate — — — — 1-4 single family residential 2,389 — — — Construction, land and development — — — — Home equity loans and lines of credit 1,151 — 523 — Total real estate loans $ 3,926 $ — $ 754 $ — Other loans: Commercial and industrial $ 342 $ — $ 547 $ — Consumer — — — — Total other loans $ 342 $ — $ 547 $ — Impaired loans with an allowance: Real estate loans: Commercial real estate $ 4,436 $ — $ 4,734 $ — Owner-occupied commercial real estate 2,097 — — — 1-4 single family residential 565 — — — Construction, land and development — — — — Home equity loans and lines of credit 66 — 424 — Total real estate loans $ 7,164 $ — $ 5,158 $ — Other loans: Commercial and industrial $ 345 $ — $ — $ — Consumer — — — — Total other loans $ 345 $ — $ — $ — Nine Months Ended September 30, 2016 2015 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) Impaired loans with no related allowance: Real estate loans: Commercial real estate $ 439 $ — $ 151 $ — Owner-occupied commercial real estate — — — — 1-4 single family residential 1,689 — — — Construction, land and development — — — — Home equity loans and lines of credit 1,346 — 527 — Total real estate loans $ 3,474 $ — $ 678 $ — Other loans: Commercial and industrial $ 342 $ — $ 542 $ — Consumer — — — — Total other loans $ 342 $ — $ 542 $ — Impaired loans with an allowance: Real estate loans: Commercial real estate $ 4,480 $ — $ 4,843 $ — Owner-occupied commercial real estate 2,156 — — — 1-4 single family residential 565 — — — Construction, land and development — — — — Home equity loans and lines of credit 36 — 436 — Total real estate loans $ 7,237 $ — $ 5,279 $ — Other loans: Commercial and industrial $ 471 $ — $ — $ — Consumer — — — — Total other loans $ 471 $ — $ — $ —

Goodwill and Intangibles (Table

Goodwill and Intangibles (Tables)	9 Months Ended
Goodwill and Intangibles (Tables)	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill and Other Intangible Assets	Goodwill and other intangible assets, which consist of core deposit intangibles are summarized as follows: September 30, 2016 December 31, 2015 (Dollars in thousands) Goodwill $ 81,204 $ 81,204 Core deposit intangible 14,370 14,370 Less: Accumulated amortization (9,423 ) (8,490 ) Net core deposit intangible $ 4,947 $ 5,880
Schedule of Estimated Amortization Expense for the Next Five Fiscal Years	The estimated amount of amortization expense for core deposit intangible assets to be recognized during the next five fiscal years is as follows: 2016 2017 2018 2019 2020 (Dollars in thousands) Core deposit intangible $ 256 $ 1,023 $ 1,023 $ 1,023 $ 491

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
Derivatives (Tables)	Sep. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Derivatives Outstanding Included in Other Assets and Liabilities	The following tables summarize the Company’s derivatives outstanding included in other assets and other liabilities in the accompanying consolidated balance sheets: September 30, 2016 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments under ASC 815-10 Interest rate contracts - pay floating, receive fixed $ 856,124 $ 44,057 $ — $ — Interest rate contracts - pay fixed, receive floating — — 856,124 44,057 Total derivatives $ 856,124 $ 44,057 $ 856,124 $ 44,057 December 31, 2015 Derivative Assets Derivative Liabilities Notional Fair Value Notional Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments under ASC 815-10 Interest rate contracts - pay floating, receive fixed $ 690,175 $ 21,553 $ 8,298 $ 2 Interest rate contracts - pay fixed, receive floating — — 698,474 21,551 Total derivatives $ 690,175 $ 21,553 $ 706,772 $ 21,553
Summary of Gross and Net Fair Values of Derivatives Outstanding Included in Other Liabilities	The following table summarizes the gross and net fair values of the Company’s derivatives outstanding with this counterparty included in other liabilities in the accompanying consolidated balance sheets: September 30, 2016 Gross amounts of recognized liabilities Gross amounts offset in the consolidated balance sheets Net amounts in the consolidated balance sheets (Dollars in thousands) Offsetting derivative liabilities Counterparty A - Interest rate contracts $ 44,057 $ — $ 44,057 Total $ 44,057 $ — $ 44,057 December 31, 2015 Gross amounts of recognized liabilities Gross amounts offset in the consolidated balance sheets Net amounts in the consolidated balance sheets (Dollars in thousands) Offsetting derivative liabilities Counterparty A - Interest rate contracts $ 21,553 $ (2 ) $ 21,551 Total $ 21,553 $ (2 ) $ 21,551

Deposits (Tables)

Deposits (Tables)	9 Months Ended
Deposits (Tables)	Sep. 30, 2016
Banking and Thrift [Abstract]
Summary of Company's Deposits by Category	The following table sets forth the Company’s deposits by category: September 30, 2016 December 31, 2015 (Dollars in thousands) Noninterest-bearing demand deposits $ 830,910 $ 637,047 Interest-bearing demand deposits 905,687 608,454 Interest-bearing NOW accounts 420,207 347,832 Savings and money market accounts 2,468,321 1,979,132 Time deposits 2,292,438 1,858,173 Total deposits $ 6,917,563 $ 5,430,638 Time deposits $100,000 and greater $ 1,727,598 $ 1,323,520 Time deposits greater than $250,000 857,102 587,590

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
Accumulated Other Comprehensive Income (Tables)	Sep. 30, 2016
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income	Changes in AOCI for the periods indicated are summarized as follows: Three Months Ended September 30, 2016 2015 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax (Dollars in thousands) Balance at beginning of period $ 7,849 $ (3,033 ) $ 4,816 $ 127 $ (49 ) $ 78 Unrealized gain (loss) on investment securities available for sale: Net unrealized holdings gain (loss) arising during the period 19,123 (7,372 ) 11,751 (4,625 ) 1,784 (2,841 ) Amounts reclassified to (gain) loss on investment securities (621 ) 240 (381 ) (232 ) 90 (142 ) Balance at end of period $ 26,351 $ (10,165 ) $ 16,186 $ (4,730 ) $ 1,825 $ (2,905 ) Nine Months Ended September 30, 2016 2015 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax (Dollars in thousands) Balance at beginning of period $ (15,371 ) $ 5,928 $ (9,443 ) $ 1,106 $ (427 ) $ 679 Unrealized gain (loss) on investment securities available for sale: Net unrealized holdings gain (loss) arising during the period 43,450 (16,761 ) 26,689 (3,325 ) 1,283 (2,042 ) Amounts reclassified to (gain) loss on investment securities (1,728 ) 668 (1,060 ) (2,511 ) 969 (1,542 ) Balance at end of period $ 26,351 $ (10,165 ) $ 16,186 $ (4,730 ) $ 1,825 $ (2,905 )

Basic and Diluted Earnings Pe30

Basic and Diluted Earnings Per Share (Tables)	9 Months Ended
Basic and Diluted Earnings Per Share (Tables)	Sep. 30, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table presents the computation of basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands, except share and per share data) Net income (loss) available to common stockholders $ 26,064 $ 21,140 $ 72,020 $ 23,642 Weighted average number of common shares - basic 40,608,706 41,381,482 40,651,201 41,410,494 Effect of dilutive securities: Employee stock-based compensation awards and warrants 2,542,107 2,416,896 2,364,502 1,702,453 Weighted average number of common shares - diluted 43,150,813 43,798,378 43,015,703 43,112,947 Basic earnings (loss) per share $ 0.64 $ 0.51 $ 1.77 $ 0.57 Diluted earnings (loss) per share $ 0.60 $ 0.48 $ 1.67 $ 0.55 Weighted average number of anti-dilutive equity awards 485,706 120,500 173,084 531,610

Stock-Based Compensation and 31

Stock-Based Compensation and Other Benefit Plans (Tables)	9 Months Ended
Stock-Based Compensation and Other Benefit Plans (Tables)	Sep. 30, 2016
2009 Stock Option Plan
Schedule of Option Activity	Option grant activity for the period indicated is summarized as follows: 2009 Stock Option Plan Options Weighted Average Exercise Price Outstanding at January 1, 2016 3,707,898 $ 20.67 Granted — — Exercised (371,806 ) 20.64 Forfeited (36,824 ) 22.22 Expired (417 ) 22.97 Outstanding at September 30, 2016 3,298,851 20.65 Exercisable at September 30, 2016 3,031,954 20.59 Vested at September 30, 2016 3,031,954 20.59 Vested and expected to vest at September 30, 2016 3,298,851 20.65
2013 Stock Incentive Plan
Schedule of Option Activity	Option grant activity for the period indicated is summarized as follows: 2013 Stock Incentive Plan Options Options Weighted Average Exercise Price Outstanding at January 1, 2016 2,367,187 $ 20.37 Granted 80,000 29.98 Exercised (211,010 ) 21.04 Forfeited (34,169 ) 23.03 Expired — — Outstanding at September 30, 2016 2,202,008 20.61 Exercisable at September 30, 2016 1,398,982 20.45 Vested at September 30, 2016 1,898,986 20.26 Vested and expected to vest at September 30, 2016 2,202,008 20.61
2016 Stock Incentive Plan
Schedule of Option Activity	Option grant activity for the period indicated is summarized as follows: 2016 Stock Incentive Plan Options Options Weighted Average Exercise Price Outstanding at January 1, 2016 — $ — Granted 827,500 36.11 Exercised — — Forfeited — — Expired — — Outstanding at September 30, 2016 827,500 36.11 Exercisable at September 30, 2016 — — Vested at September 30, 2016 — — Vested and expected to vest at September 30, 2016 827,500 36.11

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
Commitments and Contingencies (Tables)	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Summary of Unfunded Commitments	Unfunded commitments are as follows: September 30, 2016 December 31, 2015 (Dollars in thousands) Commitments to fund loans $ 724,592 $ 578,730 Unused lines of credit 406,608 358,601 Commercial and standby letters of credit 23,451 14,410 Total $ 1,154,651 $ 951,741

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents the assets and liabilities measured at fair value on a recurring basis: September 30, 2016 Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets: U.S. Government agencies and sponsored enterprises obligations $ — $ 16,539 $ — $ 16,539 U.S. Government agencies and sponsored enterprises mortgage-backed securities — 432,913 — 432,913 State and municipal obligations — 10,966 — 10,966 Asset-backed securities — 498,414 — 498,414 Corporate bonds and other debt securities 58,240 509,066 — 567,306 Preferred stocks and other equity securities 7,135 138,816 — 145,951 Derivative assets - Interest rate contracts — 44,057 — 44,057 Total $ 65,375 $ 1,650,771 $ — $ 1,716,146 Liabilities: Derivative liabilities - Interest rate contracts $ — $ 44,057 $ — $ 44,057 Total $ — $ 44,057 $ — $ 44,057 December 31, 2015 Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets: U.S. Government agencies and sponsored enterprises obligations $ — $ 20,888 $ — $ 20,888 U.S. Government agencies and sponsored enterprises mortgage-backed securities — 393,115 — 393,115 State and municipal obligations — 2,215 — 2,215 Asset-backed securities — 493,934 — 493,934 Corporate bonds and other debt securities — 444,895 — 444,895 Preferred stocks and other equity securities 2,052 167,523 — 169,575 Derivative assets - Interest rate contracts — 21,553 — 21,553 Total $ 2,052 $ 1,544,123 $ — $ 1,546,175 Liabilities: Derivative liabilities - Interest rate contracts $ — $ 21,553 $ — $ 21,553 Total $ — $ 21,553 $ — $ 21,553
Significant Unobservable Inputs in Fair Value Measurement Level 3 Assets and Liabilities	The following table shows significant unobservable inputs used in the non-recurring fair value measurement of level 3 assets and liabilities: Level 3 Assets: September 30, 2016 December 31, 2015 Valuation Technique Unobservable Inputs Range (Dollars in thousands) Impaired loans $ 12,006 $ 9,582 Third party appraisals and discounted cash flows Collateral discounts and discount rates 3.5% - 10% Other real estate owned 25,654 39,340 Third party appraisals Collateral discounts and estimated cost to sell 10 %
Summary of Fair Value Measurements Related to Collateral Dependent Impaired Loans and OREO are Classified within Level 3 of the Fair Value Hierarchy	The following tables provide information about certain assets measured at fair value on a non-recurring basis: Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 (Dollars in thousands) Negative valuation adjustments: Impaired loans $ 156 $ — $ 222 $ 1,011 Foreclosed real estate 225 122 1,120 242
Schedule of Carrying Amounts and Estimated Fair Values, as well as the Level within the Fair Value Hierarchy	The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments are as follows: September 30, 2016 Carrying Value Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 87,334 $ 87,334 $ 87,334 $ — $ — Available for sale securities 1,672,089 1,672,089 65,375 1,606,714 — FHLB and other bank stock 43,486 43,486 — 43,486 — Loans, net 6,233,708 6,284,628 — — 6,284,628 Loans held for sale 15,748 15,748 — 15,748 — Bank-owned life insurance 172,105 172,105 — 172,105 — Derivative assets - Interest rate contracts 44,057 44,057 — 44,057 — Financial Liabilities: Deposits $ 6,917,563 $ 6,921,862 $ — $ 6,921,862 $ — Advances from the FHLB and other borrowings 568,175 569,739 — 569,739 — Derivative liabilities - Interest rate contracts 44,057 44,057 — 44,057 — December 31, 2015 Carrying Value Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 102,460 $ 102,460 $ 102,460 $ — $ — Available for sale securities 1,524,622 1,524,622 2,052 1,522,570 — FHLB and other bank stock 59,477 59,477 — 59,477 — Loans, net 5,164,061 5,207,971 — — 5,207,971 Loans held for sale 2,514 2,514 — 2,514 — Bank-owned life insurance 168,246 168,246 — 168,246 — Derivative assets - Interest rate contracts 21,553 21,553 — 21,553 — Financial Liabilities: Deposits $ 5,430,638 $ 5,430,501 $ — $ 5,430,501 $ — Advances from the FHLB and other borrowings 983,183 981,997 — 981,997 — Derivative liabilities - Interest rate contracts 21,553 21,553 — 21,553 —

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016Banking_CenterSubsidiary
Accounting Policies [Abstract]
Number of wholly owned subsidiary \| Subsidiary	1
Number of banking centers \| Banking_Center	48

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Millions	Sep. 30, 2016USD ($)security	Dec. 31, 2015USD ($)
Investments, Debt and Equity Securities [Abstract]
Carrying value of pledged securities \| $	$ 538	$ 939.6
Number of securities in security portfolio	346
Securities in an unrealized loss position	79
Securities in an unrealized loss position for less than 12 months	34

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost, Gross Unrealized Gains and Losses and Approximate Fair Values of Securities Available for Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	$ 1,645,738	$ 1,539,993
Available for sale securities, Unrealized Gains	30,977	5,993
Available for sale securities, Unrealized Losses	4,626	21,364
Available for sale securities, Fair Value	1,672,089	1,524,622
U.S. Government agencies and sponsored enterprises obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	16,542	20,930
Available for sale securities, Unrealized Gains	158	100
Available for sale securities, Unrealized Losses	161	142
Available for sale securities, Fair Value	16,539	20,888
U.S. Government agencies and sponsored enterprises mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	422,358	392,123
Available for sale securities, Unrealized Gains	10,829	2,587
Available for sale securities, Unrealized Losses	274	1,595
Available for sale securities, Fair Value	432,913	393,115
State and municipal obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	10,741	2,041
Available for sale securities, Unrealized Gains	225	174
Available for sale securities, Fair Value	10,966	2,215
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	497,109	503,240
Available for sale securities, Unrealized Gains	2,702	383
Available for sale securities, Unrealized Losses	1,397	9,689
Available for sale securities, Fair Value	498,414	493,934
Corporate bonds and other debt securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	554,514	450,489
Available for sale securities, Unrealized Gains	15,491	1,596
Available for sale securities, Unrealized Losses	2,699	7,190
Available for sale securities, Fair Value	567,306	444,895
Preferred stock and other equity securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost	144,474	171,170
Available for sale securities, Unrealized Gains	1,572	1,153
Available for sale securities, Unrealized Losses	95	2,748
Available for sale securities, Fair Value	$ 145,951	$ 169,575

Investment Securities - Schedul

Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Available for sale, Due in one year or less at Amortized Cost	$ 0
Available for sale, Due after one year through five years at Amortized Cost	182,483
Available for sale, Due after five years through ten years at Amortized Cost	91,492
Available for sale, Due after ten years at Amortized Cost	291,280
U.S. Government agencies and sponsored enterprises obligations, mortgage-backed securities and asset-backed securities at Amortized Cost	936,009
Preferred stock and other equity securities, Amortized Cost	144,474
Available for sale securities, Amortized Cost	1,645,738	$ 1,539,993
Available for sale securities, Due in one year or less at Fair Value	0
Available for sale securities, Due after one year through five years at Fair Value	182,922
Available for sale securities, Due after five years through ten years at Fair Value	93,451
Available for sale securities, Due after ten years at Fair Value	301,899
U.S. Government agencies and sponsored enterprises obligations, mortgage-backed securities and asset-backed securities at Fair Value	947,866
Preferred stock and other equity securities, Fair Value	145,951
Total available for sale, Fair Value	$ 1,672,089	$ 1,524,622

Investment Securities - Summa38

Investment Securities - Summary of Estimated Fair Values and Gross Unrealized Losses on Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	$ 135,288	$ 1,039,553
Available for sale securities Unrealized Loss, Less than 12 Months	780	16,753
Available for sale securities at Fair Value, 12 months or more	194,560	109,696
Available for sale securities Unrealized Loss, 12 months or more	3,846	4,611
Available for sale securities, Total Fair Value	329,848	1,149,249
Available for sale securities, Total Unrealized Loss	4,626	21,364
U.S. Government agencies and sponsored enterprises obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	11,724	15,687
Available for sale securities Unrealized Loss, Less than 12 Months	161	142
Available for sale securities at Fair Value, 12 months or more	0	0
Available for sale securities Unrealized Loss, 12 months or more	0	0
Available for sale securities, Total Fair Value	11,724	15,687
Available for sale securities, Total Unrealized Loss	161	142
U.S. Government agencies and sponsored enterprises mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	14,220	225,109
Available for sale securities Unrealized Loss, Less than 12 Months	53	1,391
Available for sale securities at Fair Value, 12 months or more	12,782	12,584
Available for sale securities Unrealized Loss, 12 months or more	221	204
Available for sale securities, Total Fair Value	27,002	237,693
Available for sale securities, Total Unrealized Loss	274	1,595
State and municipal obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	0	0
Available for sale securities Unrealized Loss, Less than 12 Months	0	0
Available for sale securities at Fair Value, 12 months or more	0	0
Available for sale securities Unrealized Loss, 12 months or more	0	0
Available for sale securities, Total Fair Value	0	0
Available for sale securities, Total Unrealized Loss	0	0
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	3,841	354,912
Available for sale securities Unrealized Loss, Less than 12 Months	4	6,290
Available for sale securities at Fair Value, 12 months or more	91,524	78,112
Available for sale securities Unrealized Loss, 12 months or more	1,393	3,399
Available for sale securities, Total Fair Value	95,365	433,024
Available for sale securities, Total Unrealized Loss	1,397	9,689
Corporate bonds and other debt securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	71,720	347,302
Available for sale securities Unrealized Loss, Less than 12 Months	543	7,190
Available for sale securities at Fair Value, 12 months or more	85,185	0
Available for sale securities Unrealized Loss, 12 months or more	2,156	0
Available for sale securities, Total Fair Value	156,905	347,302
Available for sale securities, Total Unrealized Loss	2,699	7,190
Preferred stock and other equity securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities at Fair Value, Less than 12 months	33,783	96,543
Available for sale securities Unrealized Loss, Less than 12 Months	19	1,740
Available for sale securities at Fair Value, 12 months or more	5,069	19,000
Available for sale securities Unrealized Loss, 12 months or more	76	1,008
Available for sale securities, Total Fair Value	38,852	115,543
Available for sale securities, Total Unrealized Loss	$ 95	$ 2,748

Investment Securities - Summa39

Investment Securities - Summary of Gross Realized Gains and Losses on Sale of Securities Available for Sale (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 1,074	$ 104	$ 2,283	$ 2,065
Gross realized losses	(386)	(106)	(1,382)	(1,019)
Net realized gains (losses)	$ 688	$ (2)	$ 901	$ 1,046

Loans, Net - Schedule of Loans

Loans, Net - Schedule of Loans by Portfolio and Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 6,269,493		$ 5,193,187
Allowance for loan losses	(35,785)	$ (33,706)	(29,126)	$ (27,394)	$ (27,046)	$ (22,880)
Loans, net	6,233,708		5,164,061
Net deferred fees, costs, and premium and discount	5,000		7,100
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	431,734		582,424
Allowance for loan losses	(1,914)			(2,270)
New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,837,759		4,610,763
Allowance for loan losses	(30,525)			(21,419)
Total real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,938,006		4,166,072
Total real estate loans \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,537,755		3,632,563
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,472,138		1,301,754
Allowance for loan losses	(10,004)	(9,745)	(8,450)	(8,296)	(9,652)	(8,206)
Commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(867)			(1,265)
Commercial real estate \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,272,150		998,141
Allowance for loan losses	(6,807)			(5,302)
Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	616,173		545,829
Allowance for loan losses	(2,337)	(2,252)	(2,243)	(1,607)	(1,548)	(1,020)
Owner-occupied commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(284)			(68)
Owner-occupied commercial real estate \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	596,131		524,728
Allowance for loan losses	(2,053)			(1,539)
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,087,971		1,666,288
Allowance for loan losses	(6,798)	(7,439)	(6,425)	(5,714)	(5,744)	(4,740)
1-4 single family residential \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(309)			(346)
1-4 single family residential \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,982,340		1,541,255
Allowance for loan losses	(6,460)			(5,342)
Construction, land and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	671,120		571,849
Allowance for loan losses	(4,697)	(3,763)	(3,404)	(2,963)	(3,024)	(2,456)
Construction, land and development \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(44)			(36)
Construction, land and development \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	639,626		537,494
Allowance for loan losses	(4,376)			(2,426)
Home equity loans and lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	90,604		80,352
Allowance for loan losses	(643)	(615)	(483)	(641)	(563)	(355)
Home equity loans and lines of credit \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(282)			(469)
Home equity loans and lines of credit \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	47,508		30,945
Allowance for loan losses	(361)			(172)
Total other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,331,487		1,027,115
Total other loans \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,300,004		978,200
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,177		8,217
Allowance for loan losses	(470)	(427)	(456)	(457)	(456)	(358)
Consumer \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(9)			(4)
Consumer \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,680		5,397
Allowance for loan losses	(92)			(36)
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,324,310		1,018,898
Allowance for loan losses	(10,836)	$ (9,465)	(7,665)	(7,716)	$ (6,059)	$ (5,745)
Commercial and industrial \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	(119)			(82)
Commercial and industrial \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,295,324		972,803
Allowance for loan losses	(10,376)			(6,602)
ASC 310-30 Loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	243,763		355,740
Allowance for loan losses	(3,346)			(3,705)
ASC 310-30 Loans \| Total real estate loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	219,704		316,567
Allowance for loan losses	(2,636)		(2,252)
ASC 310-30 Loans \| Total real estate loans \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	160,219		247,628
Allowance for loan losses	(2,330)		(1,898)	(1,729)
ASC 310-30 Loans \| Commercial real estate \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Owner-occupied commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0	0
ASC 310-30 Loans \| Owner-occupied commercial real estate \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| 1-4 single family residential \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	34,329		40,922
Allowance for loan losses	(29)		(26)	(26)
ASC 310-30 Loans \| 1-4 single family residential \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Construction, land and development \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	25,156		28,017
Allowance for loan losses	(277)		(328)	(501)
ASC 310-30 Loans \| Construction, land and development \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Home equity loans and lines of credit \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0	0
ASC 310-30 Loans \| Home equity loans and lines of credit \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Total other loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	24,059		39,173
Allowance for loan losses	(710)		(859)
ASC 310-30 Loans \| Total other loans \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Consumer \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,074		2,390
Allowance for loan losses	(369)		(406)	(417)
ASC 310-30 Loans \| Consumer \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Commercial and industrial \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	21,985		36,783
Allowance for loan losses	(341)		(453)	$ (1,032)
ASC 310-30 Loans \| Commercial and industrial \| New Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0		0
Allowance for loan losses	0		0
Non-ASC 310-30 Loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	187,971		226,684
Non-ASC 310-30 Loans \| Total real estate loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	180,547		216,942
Non-ASC 310-30 Loans \| Commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	39,769		55,985
Non-ASC 310-30 Loans \| Owner-occupied commercial real estate \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	20,042		21,101
Non-ASC 310-30 Loans \| 1-4 single family residential \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	71,302		84,111
Non-ASC 310-30 Loans \| Construction, land and development \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,338		6,338
Non-ASC 310-30 Loans \| Home equity loans and lines of credit \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	43,096		49,407
Non-ASC 310-30 Loans \| Total other loans \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,424		9,742
Non-ASC 310-30 Loans \| Consumer \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423		430
Non-ASC 310-30 Loans \| Commercial and industrial \| Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,001		$ 9,312

Loans, Net - Additional Informa

Loans, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged loans as collateral for FHLB advances, carrying amount	$ 3,110,000		$ 3,110,000		$ 2,130,000
Loans	6,269,493		6,269,493		5,193,187
Purchase of loans from third parties	0	$ 0	198,900	$ 233,600
Sale of loans to third parties	23,300	$ 26,400	85,000	45,900
Reclassification between non-accretable and accretable discount			23,200	$ 28,600
ASC 310-30 Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principle balance of ASC 310-30 loans	280,400		280,400		457,900
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investments of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	3,100		3,100
Syndicated National Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 466,900		$ 466,900		$ 464,200

Loans, Net - Summary of Changes

Loans, Net - Summary of Changes in Accretable Discount for ASC 310-30 Loans (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning Balance	$ 144,152	$ 156,197
Accretion	(42,722)	(38,273)
Reclassifications from (to) non-accretable difference	(23,207)	28,638
Ending Balance	$ 78,223	$ 146,562

Allowance for Loan Losses - Sum

Allowance for Loan Losses - Summary of Changes in Allowance for Loan Losses by Loan Class and Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 33,706	$ 27,046	$ 29,126	$ 22,880
Total provision	1,990	675	5,406	4,494
Total charge-offs	(35)	(391)	(540)	(1,122)
Total recoveries	124	64	1,793	1,142
Ending balance	35,785	27,394	35,785	27,394
Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	(20)	16	(1,126)	1,061
Total charge-offs	0	(45)	(42)	(173)
Total recoveries	8	0	812	0
Ending balance	1,914	2,270	1,914	2,270
Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	(5)	(1,176)	(248)	(1,962)
Total charge-offs	(35)	(346)	(498)	(949)
Total recoveries	116	59	981	1,130
Ending balance	3,346	3,705	3,346	3,705
New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	2,015	1,835	6,780	5,395
Total charge-offs	0	0	0	0
Total recoveries	0	5	0	12
Ending balance	30,525	21,419	30,525	21,419
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	9,745	9,652	8,450	8,206
Total provision	153	(1,291)	235	(40)
Total charge-offs	0	(65)	(352)	(270)
Total recoveries	106	0	1,671	400
Ending balance	10,004	8,296	10,004	8,296
Commercial real estate \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	(68)	(110)	(1,021)	770
Total charge-offs	0	0	0	0
Total recoveries	0	0	804	0
Ending balance	867	1,265	867	1,265
Commercial real estate \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			1,898
Total provision	110	(791)	(83)	(1,656)
Total charge-offs	0	(65)	(352)	(270)
Total recoveries	106	0	867	400
Ending balance	2,330	1,729	2,330	1,729
Commercial real estate \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	111	(390)	1,339	846
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	6,807	5,302	6,807	5,302
Commercial real estate \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
Owner-occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,252	1,548	2,243	1,020
Total provision	85	59	95	587
Total charge-offs	0	0	(1)	0
Total recoveries	0	0	0	0
Ending balance	2,337	1,607	2,337	1,607
Owner-occupied commercial real estate \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	(56)	14	(178)	10
Total charge-offs	0	0	(1)	0
Total recoveries	0	0	0	0
Ending balance	284	68	284	68
Owner-occupied commercial real estate \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Total provision	0	0	0	0
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	0	0	0	0
Owner-occupied commercial real estate \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	141	45	273	577
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	2,053	1,539	2,053	1,539
Owner-occupied commercial real estate \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
1-4 single family residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	7,439	5,744	6,425	4,740
Total provision	(610)	176	373	1,364
Total charge-offs	(31)	(224)	(31)	(559)
Total recoveries	0	18	31	169
Ending balance	6,798	5,714	6,798	5,714
1-4 single family residential \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	27	11	(23)	60
Total charge-offs	0	0	0	(128)
Total recoveries	0	0	0	0
Ending balance	309	346	309	346
1-4 single family residential \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			26
Total provision	2	(38)	3	(37)
Total charge-offs	(31)	(224)	(31)	(431)
Total recoveries	0	18	31	169
Ending balance	29	26	29	26
1-4 single family residential \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	(639)	203	393	1,341
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	6,460	5,342	6,460	5,342
1-4 single family residential \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
Construction, land and development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,763	3,024	3,404	2,456
Total provision	924	(79)	1,254	156
Total charge-offs	0	0	(33)	(56)
Total recoveries	10	18	72	407
Ending balance	4,697	2,963	4,697	2,963
Construction, land and development \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	7	(20)	8	(39)
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	44	36	44	36
Construction, land and development \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			328
Total provision	(81)	(310)	(90)	(508)
Total charge-offs	0	0	(33)	(56)
Total recoveries	10	18	72	407
Ending balance	277	501	277	501
Construction, land and development \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	998	251	1,336	703
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	4,376	2,426	4,376	2,426
Construction, land and development \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
Home equity loans and lines of credit
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	615	563	483	355
Total provision	20	115	187	323
Total charge-offs	0	(37)	(35)	(37)
Total recoveries	8	0	8	0
Ending balance	643	641	643	641
Home equity loans and lines of credit \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	1	74	18	221
Total charge-offs	0	(37)	(35)	(37)
Total recoveries	8	0	8	0
Ending balance	282	469	282	469
Home equity loans and lines of credit \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Total provision	0	0	0	0
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	0	0	0	0
Home equity loans and lines of credit \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	19	41	169	102
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	361	172	361	172
Home equity loans and lines of credit \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	9,465	6,059	7,665	5,745
Total provision	1,371	1,686	3,236	1,937
Total charge-offs	0	(57)	(76)	(132)
Total recoveries	0	28	11	166
Ending balance	10,836	7,716	10,836	7,716
Commercial and industrial \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	64	41	59	33
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	119	82	119	82
Commercial and industrial \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			453
Total provision	(25)	(67)	(47)	52
Total charge-offs	0	(57)	(76)	(132)
Total recoveries	0	23	11	154
Ending balance	341	1,032	341	1,032
Commercial and industrial \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	1,332	1,712	3,224	1,852
Total charge-offs	0	0	0	0
Total recoveries	0	5	0	12
Ending balance	10,376	6,602	10,376	6,602
Commercial and industrial \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	0		0
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	427	456	456	358
Total provision	47	9	26	167
Total charge-offs	(4)	(8)	(12)	(68)
Total recoveries	0	0	0	0
Ending balance	470	457	470	457
Consumer \| Acquired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	5	6	11	6
Total charge-offs	0	(8)	(6)	(8)
Total recoveries	0	0	0	0
Ending balance	9	4	9	4
Consumer \| Acquired Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			406
Total provision	(11)	30	(31)	187
Total charge-offs	(4)	0	(6)	(60)
Total recoveries	0	0	0	0
Ending balance	369	417	369	417
Consumer \| New Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total provision	53	(27)	46	(26)
Total charge-offs	0	0	0	0
Total recoveries	0	0	0	0
Ending balance	92	$ 36	92	$ 36
Consumer \| New Loans \| ASC 310-30 Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			0
Ending balance	$ 0		$ 0

Allowance for Loan Losses - Agi

Allowance for Loan Losses - Aging Analysis of Recorded Investment for Loans by Portfolio and Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	$ 2,064	$ 12,406
Non- Accrual	761	1,454
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	13,633	16,665
Non- Accrual	12,697	13,740
30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	581	9,970
30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	916	2,036
60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	722	982
60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	20	889
90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total real estate loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	2,064	12,406
Non- Accrual	761	1,454
Total real estate loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	12,769	15,675
Non- Accrual	12,010	12,840
Total real estate loans \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	581	9,970
Total real estate loans \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	739	1,946
Total real estate loans \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	722	982
Total real estate loans \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	20	889
Total real estate loans \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total real estate loans \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	581	0
Non- Accrual	0	0
Commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	4,773	5,345
Non- Accrual	4,773	5,282
Commercial real estate \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	581	0
Commercial real estate \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	63
Commercial real estate \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial real estate \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial real estate \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial real estate \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Owner-occupied commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	113
Non- Accrual	0	0
Owner-occupied commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	2,686	2,342
Non- Accrual	2,158	2,247
Owner-occupied commercial real estate \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Owner-occupied commercial real estate \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	528	0
Owner-occupied commercial real estate \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	113
Owner-occupied commercial real estate \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	95
Owner-occupied commercial real estate \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Owner-occupied commercial real estate \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
1-4 single family residential \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	1,420	11,762
Non- Accrual	698	1,454
1-4 single family residential \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	2,802	5,106
Non- Accrual	2,649	3,016
1-4 single family residential \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	9,439
1-4 single family residential \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	153	1,393
1-4 single family residential \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	722	869
1-4 single family residential \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	697
1-4 single family residential \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
1-4 single family residential \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Construction, land and development \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	467
Non- Accrual	0	0
Construction, land and development \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Non- Accrual	0	0
Construction, land and development \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	467
Construction, land and development \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Construction, land and development \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Construction, land and development \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Construction, land and development \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Construction, land and development \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Home equity loans and lines of credit \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	63	64
Non- Accrual	63	0
Home equity loans and lines of credit \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	2,508	2,882
Non- Accrual	2,430	2,295
Home equity loans and lines of credit \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	64
Home equity loans and lines of credit \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	58	490
Home equity loans and lines of credit \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Home equity loans and lines of credit \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	20	97
Home equity loans and lines of credit \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Home equity loans and lines of credit \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total other loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Non- Accrual	0	0
Total other loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	864	990
Non- Accrual	687	900
Total other loans \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total other loans \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	177	90
Total other loans \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total other loans \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total other loans \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Total other loans \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Non- Accrual	0	0
Consumer \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	23
Non- Accrual	0	23
Consumer \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Consumer \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial and industrial \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Non- Accrual	0	0
Commercial and industrial \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	864	967
Non- Accrual	687	877
Commercial and industrial \| 30 to 59 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial and industrial \| 30 to 59 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	177	90
Commercial and industrial \| 60 to 89 Days Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial and industrial \| 60 to 89 Days Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial and industrial \| 90 Days or More Past Due \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	0	0
Commercial and industrial \| 90 Days or More Past Due \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivables past due	$ 0	$ 0

Allowance for Loan Losses - S45

Allowance for Loan Losses - Summary of Commercial Non-ASC 310-30 and New Loans by Key Indicators of Credit Quality (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 6,269,493	$ 5,193,187
New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	5,837,759	4,610,763
Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	431,734	582,424
Pass \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	3,803,056	3,033,166
Pass \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	64,809	82,235
Special Mention \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	175	0
Special Mention \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	1,352
Substandard \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Substandard \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	8,341	9,149
Doubtful \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Doubtful \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,472,138	1,301,754
Commercial real estate \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,272,150	998,141
Commercial real estate \| Pass \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,272,150	998,141
Commercial real estate \| Pass \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	34,632	50,328
Commercial real estate \| Special Mention \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate \| Special Mention \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate \| Substandard \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate \| Substandard \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	5,137	5,657
Commercial real estate \| Doubtful \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial real estate \| Doubtful \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Owner-occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	616,173	545,829
Owner-occupied commercial real estate \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	596,131	524,728
Owner-occupied commercial real estate \| Pass \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	595,956	524,728
Owner-occupied commercial real estate \| Pass \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	17,884	18,854
Owner-occupied commercial real estate \| Special Mention \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	175	0
Owner-occupied commercial real estate \| Special Mention \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Owner-occupied commercial real estate \| Substandard \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Owner-occupied commercial real estate \| Substandard \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	2,158	2,247
Owner-occupied commercial real estate \| Doubtful \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Owner-occupied commercial real estate \| Doubtful \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development
Financing Receivable, Recorded Investment [Line Items]
Loans	671,120	571,849
Construction, land and development \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	639,626	537,494
Construction, land and development \| Pass \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	639,626	537,494
Construction, land and development \| Pass \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	6,338	6,338
Construction, land and development \| Special Mention \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development \| Special Mention \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development \| Substandard \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development \| Substandard \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development \| Doubtful \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Construction, land and development \| Doubtful \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans	1,324,310	1,018,898
Commercial and industrial \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,295,324	972,803
Commercial and industrial \| Pass \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,295,324	972,803
Commercial and industrial \| Pass \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	5,955	6,715
Commercial and industrial \| Special Mention \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial and industrial \| Special Mention \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	1,352
Commercial and industrial \| Substandard \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial and industrial \| Substandard \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	1,046	1,245
Commercial and industrial \| Doubtful \| New Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Commercial and industrial \| Doubtful \| Acquired Loans
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 0	$ 0

Allowance for Loan Losses - S46

Allowance for Loan Losses - Summary of Loans Based on Method for Determining Allowance (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	$ 6,269,493		$ 5,193,187
Allowance for loan losses	35,785	$ 33,706	29,126	$ 27,394	$ 27,046	$ 22,880
New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	5,837,759		4,610,763
Allowance for loan losses	30,525			21,419
Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	431,734		582,424
Allowance for loan losses	1,914			2,270
Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	4,938,006		4,166,072
Total real estate loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	590		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	4,537,165		3,632,563
Loans - Recorded Investment, ASC 310-30 Loans	4,537,755		3,632,563
Allowance for Credit Loss, Individually Evaluated for Impairment	66		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	20,057		16,547
Total real estate loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	10,729		8,705
Loans - Recorded Investment, Collectively Evaluated for Impairment	169,818		208,237
Allowance for Credit Loss, Individually Evaluated for Impairment	999		1,228
Allowance for Credit Loss, Collectively Evaluated for Impairment	787		978
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	1,472,138		1,301,754
Allowance for loan losses	10,004	9,745	8,450	8,296	9,652	8,206
Commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	1,272,150		998,141
Loans - Recorded Investment, ASC 310-30 Loans	1,272,150		998,141
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	6,807		5,468
Allowance for loan losses	6,807			5,302
Commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	4,773		5,282
Loans - Recorded Investment, Collectively Evaluated for Impairment	34,996		50,703
Allowance for Credit Loss, Individually Evaluated for Impairment	688		829
Allowance for Credit Loss, Collectively Evaluated for Impairment	179		255
Allowance for loan losses	867			1,265
Owner-occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	616,173		545,829
Allowance for loan losses	2,337	2,252	2,243	1,607	1,548	1,020
Owner-occupied commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	596,131		524,728
Loans - Recorded Investment, ASC 310-30 Loans	596,131		524,728
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	2,053		1,780
Allowance for loan losses	2,053			1,539
Owner-occupied commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	2,068		2,244
Loans - Recorded Investment, Collectively Evaluated for Impairment	17,974		18,857
Allowance for Credit Loss, Individually Evaluated for Impairment	223		399
Allowance for Credit Loss, Collectively Evaluated for Impairment	61		64
Allowance for loan losses	284			68
1-4 single family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	2,087,971		1,666,288
Allowance for loan losses	6,798	7,439	6,425	5,714	5,744	4,740
1-4 single family residential \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	524		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	1,981,816		1,541,255
Loans - Recorded Investment, ASC 310-30 Loans	1,982,340		1,541,255
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	6,460		6,067
Allowance for loan losses	6,460			5,342
1-4 single family residential \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	2,833		263
Loans - Recorded Investment, Collectively Evaluated for Impairment	68,469		83,848
Allowance for Credit Loss, Individually Evaluated for Impairment	88		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	221		332
Allowance for loan losses	309			346
Construction, land and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	671,120		571,849
Allowance for loan losses	4,697	3,763	3,404	2,963	3,024	2,456
Construction, land and development \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	639,626		537,494
Loans - Recorded Investment, ASC 310-30 Loans	639,626		537,494
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	4,376		3,040
Allowance for loan losses	4,376			2,426
Construction, land and development \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	6,338		6,338
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	44		36
Allowance for loan losses	44			36
Home equity loans and lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	90,604		80,352
Allowance for loan losses	643	615	483	641	563	355
Home equity loans and lines of credit \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	66		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	47,442		30,945
Loans - Recorded Investment, ASC 310-30 Loans	47,508		30,945
Allowance for Credit Loss, Individually Evaluated for Impairment	66		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	361		192
Allowance for loan losses	361			172
Home equity loans and lines of credit \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	1,055		916
Loans - Recorded Investment, Collectively Evaluated for Impairment	42,041		48,491
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	282		291
Allowance for loan losses	282			469
Total other loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	1,331,487		1,027,115
Total other loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	1,300,004		978,200
Loans - Recorded Investment, ASC 310-30 Loans	1,300,004		978,200
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	10,468		7,198
Total other loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	687		877
Loans - Recorded Investment, Collectively Evaluated for Impairment	6,737		8,865
Allowance for Credit Loss, Individually Evaluated for Impairment	68		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	60		64
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	1,324,310		1,018,898
Allowance for loan losses	10,836	9,465	7,665	7,716	6,059	5,745
Commercial and industrial \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	1,295,324		972,803
Loans - Recorded Investment, ASC 310-30 Loans	1,295,324		972,803
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	10,376		7,152
Allowance for loan losses	10,376			6,602
Commercial and industrial \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	687		877
Loans - Recorded Investment, Collectively Evaluated for Impairment	6,314		8,435
Allowance for Credit Loss, Individually Evaluated for Impairment	68		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	51		60
Allowance for loan losses	119			82
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	7,177		8,217
Allowance for loan losses	470	$ 427	456	457	$ 456	$ 358
Consumer \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	4,680		5,397
Loans - Recorded Investment, ASC 310-30 Loans	4,680		5,397
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	92		46
Allowance for loan losses	92			36
Consumer \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, Individually Evaluated for Impairment	0		0
Loans - Recorded Investment, Collectively Evaluated for Impairment	423		430
Allowance for Credit Loss, Individually Evaluated for Impairment	0		0
Allowance for Credit Loss, Collectively Evaluated for Impairment	9		4
Allowance for loan losses	9			4
ASC 310-30 Loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	243,763		355,740
Allowance for loan losses	3,346			3,705
ASC 310-30 Loans \| Total real estate loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Total real estate loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	219,704		316,567
Allowance for loan losses	2,636		2,252
ASC 310-30 Loans \| Commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	160,219		247,628
Allowance for loan losses	2,330		1,898	1,729
ASC 310-30 Loans \| Owner-occupied commercial real estate \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Owner-occupied commercial real estate \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0	0
ASC 310-30 Loans \| 1-4 single family residential \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| 1-4 single family residential \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	34,329		40,922
Allowance for loan losses	29		26	26
ASC 310-30 Loans \| Construction, land and development \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Construction, land and development \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	25,156		28,017
Allowance for loan losses	277		328	501
ASC 310-30 Loans \| Home equity loans and lines of credit \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Home equity loans and lines of credit \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0	0
ASC 310-30 Loans \| Total other loans \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Total other loans \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	24,059		39,173
Allowance for loan losses	710		859
ASC 310-30 Loans \| Commercial and industrial \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Commercial and industrial \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	21,985		36,783
Allowance for loan losses	341		453	1,032
ASC 310-30 Loans \| Consumer \| New Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	0		0
Allowance for loan losses	0		0
ASC 310-30 Loans \| Consumer \| Acquired Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans - Recorded Investment, ASC 310-30 Loans	2,074		2,390
Allowance for loan losses	$ 369		$ 406	$ 417

Allowance for Loan Losses - S47

Allowance for Loan Losses - Summary of Impaired Loans Evaluated for Specific Reserves (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Total real estate loans \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	$ 66	$ 0
Impaired Loans - With Allowance, Unpaid principal Balance	66	0
Impaired Loans - With Allowance, Related Allowance	66	0
Impaired Loans - With No Allowance, Recorded Investment	524	0
Impaired Loans - With No Allowance, Unpaid principal Balance	524	0
Total real estate loans \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	7,047	6,799
Impaired Loans - With Allowance, Unpaid principal Balance	7,674	7,234
Impaired Loans - With Allowance, Related Allowance	999	1,228
Impaired Loans - With No Allowance, Recorded Investment	3,365	1,906
Impaired Loans - With No Allowance, Unpaid principal Balance	4,080	2,062
Commercial real estate \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Commercial real estate \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	4,414	4,555
Impaired Loans - With Allowance, Unpaid principal Balance	4,921	4,924
Impaired Loans - With Allowance, Related Allowance	688	829
Impaired Loans - With No Allowance, Recorded Investment	359	727
Impaired Loans - With No Allowance, Unpaid principal Balance	397	750
Owner-occupied commercial real estate \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Owner-occupied commercial real estate \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	2,068	2,244
Impaired Loans - With Allowance, Unpaid principal Balance	2,241	2,310
Impaired Loans - With Allowance, Related Allowance	223	399
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
1-4 single family residential \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	524	0
Impaired Loans - With No Allowance, Unpaid principal Balance	524	0
1-4 single family residential \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	565	0
Impaired Loans - With Allowance, Unpaid principal Balance	512	0
Impaired Loans - With Allowance, Related Allowance	88	0
Impaired Loans - With No Allowance, Recorded Investment	1,951	263
Impaired Loans - With No Allowance, Unpaid principal Balance	2,268	264
Construction, land and development \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Construction, land and development \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Home equity loans and lines of credit \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	66	0
Impaired Loans - With Allowance, Unpaid principal Balance	66	0
Impaired Loans - With Allowance, Related Allowance	66	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Home equity loans and lines of credit \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	1,055	916
Impaired Loans - With No Allowance, Unpaid principal Balance	1,415	1,048
Total other loans \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Total other loans \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	345	0
Impaired Loans - With Allowance, Unpaid principal Balance	345	0
Impaired Loans - With Allowance, Related Allowance	68	0
Impaired Loans - With No Allowance, Recorded Investment	342	877
Impaired Loans - With No Allowance, Unpaid principal Balance	1,075	1,825
Commercial and industrial \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Commercial and industrial \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	345	0
Impaired Loans - With Allowance, Unpaid principal Balance	345	0
Impaired Loans - With Allowance, Related Allowance	68	0
Impaired Loans - With No Allowance, Recorded Investment	342	877
Impaired Loans - With No Allowance, Unpaid principal Balance	1,075	1,825
Consumer \| New Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	0	0
Consumer \| Acquired Loans
Financing Receivable, Impaired [Line Items]
Impaired Loans - With Allowance, Recorded Investment	0	0
Impaired Loans - With Allowance, Unpaid principal Balance	0	0
Impaired Loans - With Allowance, Related Allowance	0	0
Impaired Loans - With No Allowance, Recorded Investment	0	0
Impaired Loans - With No Allowance, Unpaid principal Balance	$ 0	$ 0

Allowance for Loan Losses - S48

Allowance for Loan Losses - Summary of Impaired Loans Average Recorded Investment and Interest Income Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Total real estate loans
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	$ 3,926	$ 754	$ 3,474	$ 678
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	7,164	5,158	7,237	5,279
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Commercial real estate
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	386	231	439	151
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	4,436	4,734	4,480	4,843
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Owner-occupied commercial real estate
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	0	0	0	0
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	2,097	0	2,156	0
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
1-4 single family residential
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	2,389	0	1,689	0
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	565	0	565	0
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Construction, land and development
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	0	0	0	0
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	0	0	0	0
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Home equity loans and lines of credit
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	1,151	523	1,346	527
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	66	424	36	436
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Total other loans
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	342	547	342	542
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	345	0	471	0
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	342	547	342	542
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	345	0	471	0
Impaired loans with an allowance - Interest Income Recognized	0	0	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Average Recorded Investment	0	0	0	0
Impaired loans with no related allowance - Interest Income Recognized	0	0	0	0
Impaired loans with an allowance - Average Recorded Investment	0	0	0	0
Impaired loans with an allowance - Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

Goodwill and Intangibles - Sche

Goodwill and Intangibles - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 81,204	$ 81,204
Core deposit intangible	14,370	14,370
Less: Accumulated amortization	(9,423)	(8,490)
Net core deposit intangible	$ 4,947	$ 5,880

Goodwill and Intangibles - Addi

Goodwill and Intangibles - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 257	$ 400	$ 933	$ 1,231

Goodwill and Intangibles - Esti

Goodwill and Intangibles - Estimated Amortization Expense for the Next Five Fiscal Years (Details) $ in Thousands	Sep. 30, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,016	$ 256
2,017	1,023
2,018	1,023
2,019	1,023
2,020	$ 491

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Derivative [Line Items]
Carrying value of pledged securities	$ 538,000		$ 538,000		$ 939,600
Customer Swap Fees
Derivative [Line Items]
Customer swap fees in non-interest income	993	$ 892	3,500	$ 3,700
Interest Rate Swap
Derivative [Line Items]
Carrying value of pledged securities	$ 50,800		$ 50,800

Derivatives - Summary of Deriva

Derivatives - Summary of Derivatives Outstanding Included in Other Assets and Liabilities (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ 44,057,000	$ 21,551,000
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets, Notional	856,124,000	690,175,000
Derivative Assets, Fair Value	44,057,000	21,553,000
Derivative Liabilities, Notional	856,124,000	706,772,000
Derivative Liabilities, Fair Value	44,057,000	21,553,000
Not Designated as Hedging Instrument \| Interest Rate Swap \| Pay Floating, Receive Fixed
Derivatives, Fair Value [Line Items]
Derivative Assets, Notional	856,124,000	690,175,000
Derivative Assets, Fair Value	44,057,000	21,553,000
Derivative Liabilities, Notional	0	8,298,000
Derivative Liabilities, Fair Value		2,000
Not Designated as Hedging Instrument \| Interest Rate Swap \| Pay Fixed, Receive Floating
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Notional	856,124,000	698,474,000
Derivative Liabilities, Fair Value	$ 44,057,000	$ 21,551,000

Derivatives - Summary of Gross

Derivatives - Summary of Gross and Net Fair Values of Derivatives Outstanding Included in Other Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	$ 44,057	$ 21,553
Gross amounts offset in the consolidated balance sheets	0	(2)
Net amounts in the consolidated balance sheets	44,057	21,551
Interest Rate Swap \| Counterparty A
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	44,057	21,553
Gross amounts offset in the consolidated balance sheets	0	(2)
Net amounts in the consolidated balance sheets	$ 44,057	$ 21,551

Deposits - Summary of Company's

Deposits - Summary of Company's Deposits by Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
Noninterest-bearing demand deposits	$ 830,910	$ 637,047
Interest-bearing demand deposits	905,687	608,454
Interest-bearing NOW accounts	420,207	347,832
Savings and money market accounts	2,468,321	1,979,132
Time deposits	2,292,438	1,858,173
Total deposits	6,917,563	5,430,638
Time deposits $100,000 and greater	1,727,598	1,323,520
Time deposits greater than $250,000	$ 857,102	$ 587,590

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
Aggregate amount of overdraft demand deposits reclassified to loans	$ 391
Aggregate amount of time deposits, Year one	1,560,000
Aggregate amount of time deposits, Year two	541,200
Aggregate amount of time deposits, Year three	178,100
Aggregate amount of time deposits, Year four	6,100
Aggregate amount of time deposits, Year five	9,000
Brokered deposits through an insured deposits sweep program	601,400	$ 425,100
Brokered certificates of deposit	$ 3,300	$ 3,300

Accumulated Other Comprehensi57

Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
AOCI, Net of Tax [Roll Forward]
Balance at beginning of period, before tax	$ 7,849	$ 127	$ (15,371)	$ 1,106
Balance at beginning of period, tax effect	(3,033)	(49)	5,928	(427)
Balance at beginning of period, net of tax	4,816	78	(9,443)	679
Balance at end of period, before tax	26,351	(4,730)	26,351	(4,730)
Balance at end of period, tax effect	(10,165)	1,825	(10,165)	1,825
Balance at end of period, net of tax	16,186	(2,905)	16,186	(2,905)
Accumulated Investment Gain (Loss) on Investment Securities Available for Sale
AOCI, Net of Tax [Roll Forward]
Net unrealized holdings gain (loss) arising during the period, before tax	19,123	(4,625)	43,450	(3,325)
Net unrealized holdings gain (loss) arising during the period, tax effect	(7,372)	1,784	(16,761)	1,283
Net unrealized holdings gain (loss) arising during the period, net of tax	11,751	(2,841)	26,689	(2,042)
Amounts reclassified to (gain) loss on investment securities, before tax	(621)	(232)	(1,728)	(2,511)
Amounts reclassified to (gain) loss on investment securities, tax effect	240	90	668	969
Amounts reclassified to (gain) loss on investment securities, net of tax	$ (381)	$ (142)	$ (1,060)	$ (1,542)

Basic and Diluted Earnings Pe58

Basic and Diluted Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net income (loss) available to common stockholders	$ 26,064	$ 21,140	$ 72,020	$ 23,642
Weighted average number of common shares-basic (shares)	40,608,706	41,381,482	40,651,201	41,410,494
Effect of dilutive securities:
Employee stock-based compensation awards and warrants (shares)	2,542,107	2,416,896	2,364,502	1,702,453
Weighted average number of common shares-diluted (shares)	43,150,813	43,798,378	43,015,703	43,112,947
Basic earnings (loss) per share (usd per share)	$ 0.64	$ 0.51	$ 1.77	$ 0.57
Diluted earnings (loss) per share (usd per share)	$ 0.60	$ 0.48	$ 1.67	$ 0.55
Anti-dilutive warrants, stock options and RSUs (shares)	485,706	120,500	173,084	531,610

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended
Income Taxes - Additional Information (Detail)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Effective income tax rate	35.50%	34.90%	36.10%	5.70%

Stock-Based Compensation and 60

Stock-Based Compensation and Other Benefit Plans - Schedule of Option Activity (Detail)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
2009 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, beginning balance \| shares	3,707,898
Granted, options \| shares	0
Exercised, options \| shares	(371,806)
Forfeited, options \| shares	(36,824)
Expired, options \| shares	(417)
Options outstanding, ending balance \| shares	3,298,851
Exercisable, options \| shares	3,031,954
Vested, options \| shares	3,031,954
Vested and expected to vest, options \| shares	3,298,851
Options outstanding, beginning balance, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 20.67
Options granted, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Options exercised, Weighted Average Exercise Price (usd per share) \| $ / shares	20.64
Options forfeited, Weighted Average Exercise Price (usd per share) \| $ / shares	22.22
Options expired, Weighted Average Exercise Price (usd per share) \| $ / shares	22.97
Options Outstanding, ending balance, Weighted Average Exercise Price (usd per share) \| $ / shares	20.65
Exercisable, Weighted Average Exercise Price (usd per share) \| $ / shares	20.59
Vested, Weighted Average Exercise Price (usd per share) \| $ / shares	20.59
Vested and expected to vest, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 20.65
2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, beginning balance \| shares	2,367,187
Granted, options \| shares	80,000
Exercised, options \| shares	(211,010)
Forfeited, options \| shares	(34,169)
Expired, options \| shares	0
Options outstanding, ending balance \| shares	2,202,008
Exercisable, options \| shares	1,398,982
Vested, options \| shares	1,898,986
Vested and expected to vest, options \| shares	2,202,008
Options outstanding, beginning balance, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 20.37
Options granted, Weighted Average Exercise Price (usd per share) \| $ / shares	29.98
Options exercised, Weighted Average Exercise Price (usd per share) \| $ / shares	21.04
Options forfeited, Weighted Average Exercise Price (usd per share) \| $ / shares	23.03
Options expired, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Options Outstanding, ending balance, Weighted Average Exercise Price (usd per share) \| $ / shares	20.61
Exercisable, Weighted Average Exercise Price (usd per share) \| $ / shares	20.45
Vested, Weighted Average Exercise Price (usd per share) \| $ / shares	20.26
Vested and expected to vest, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 20.61
2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, beginning balance \| shares	0
Granted, options \| shares	827,500
Exercised, options \| shares	0
Forfeited, options \| shares	0
Expired, options \| shares	0
Options outstanding, ending balance \| shares	827,500
Exercisable, options \| shares	0
Vested, options \| shares	0
Vested and expected to vest, options \| shares	827,500
Options outstanding, beginning balance, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 0
Options granted, Weighted Average Exercise Price (usd per share) \| $ / shares	36.11
Options exercised, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Options forfeited, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Options expired, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Options Outstanding, ending balance, Weighted Average Exercise Price (usd per share) \| $ / shares	36.11
Exercisable, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Vested, Weighted Average Exercise Price (usd per share) \| $ / shares	0
Vested and expected to vest, Weighted Average Exercise Price (usd per share) \| $ / shares	$ 36.11

Stock-Based Compensation and 61

Stock-Based Compensation and Other Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 29, 2016	Sep. 30, 2016	Sep. 30, 2016	Mar. 31, 2016
2009 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to shares awards		$ 1,000	$ 1,000
Weighted average period of compensation cost to be recognized			1 year 18 days
2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to shares awards		727	$ 727
Weighted average period of compensation cost to be recognized				11 months 5 days
2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to shares awards		6,900	$ 6,900
Weighted average period of compensation cost to be recognized			4 years 10 months 10 days
Restricted Shares \| 2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 836
Class A Common Stock \| Restricted Shares \| 2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	121,212
Award fair value	$ 4,200

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Reserve for unfunded commitments	$ 1.6	$ 1.5

Commitments and Contingencies63

Commitments and Contingencies - Summary of Unfunded Commitments (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Unfunded credit extension commitments	$ 1,154,651	$ 951,741
Commitments to fund loans
Line of Credit Facility [Line Items]
Unfunded credit extension commitments	724,592	578,730
Unused lines of credit
Line of Credit Facility [Line Items]
Unfunded credit extension commitments	406,608	358,601
Commercial and standby letters of credit
Line of Credit Facility [Line Items]
Unfunded credit extension commitments	$ 23,451	$ 14,410

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets:
Assets, fair value	$ 1,716,146	$ 1,546,175
Liabilities:
Liabilities, fair value	44,057	21,553
Derivative liabilities - Interest rate contracts \| Interest Rate Swap
Liabilities:
Liabilities, fair value	44,057	21,553
Level 1
Assets:
Assets, fair value	65,375	2,052
Liabilities:
Liabilities, fair value	0	0
Level 1 \| Derivative liabilities - Interest rate contracts \| Interest Rate Swap
Liabilities:
Liabilities, fair value	0	0
Level 2
Assets:
Assets, fair value	1,650,771	1,544,123
Liabilities:
Liabilities, fair value	44,057	21,553
Level 2 \| Derivative liabilities - Interest rate contracts \| Interest Rate Swap
Liabilities:
Liabilities, fair value	44,057	21,553
Level 3
Assets:
Assets, fair value	0	0
Liabilities:
Liabilities, fair value	0	0
Level 3 \| Derivative liabilities - Interest rate contracts \| Interest Rate Swap
Liabilities:
Liabilities, fair value	0	0
U.S. Government agencies and sponsored enterprises obligations
Assets:
Assets, fair value	16,539	20,888
U.S. Government agencies and sponsored enterprises obligations \| Level 1
Assets:
Assets, fair value	0	0
U.S. Government agencies and sponsored enterprises obligations \| Level 2
Assets:
Assets, fair value	16,539	20,888
U.S. Government agencies and sponsored enterprises obligations \| Level 3
Assets:
Assets, fair value	0	0
U.S. Government agencies and sponsored enterprises mortgage-backed securities
Assets:
Assets, fair value	432,913	393,115
U.S. Government agencies and sponsored enterprises mortgage-backed securities \| Level 1
Assets:
Assets, fair value	0	0
U.S. Government agencies and sponsored enterprises mortgage-backed securities \| Level 2
Assets:
Assets, fair value	432,913	393,115
U.S. Government agencies and sponsored enterprises mortgage-backed securities \| Level 3
Assets:
Assets, fair value	0	0
State and municipal obligations
Assets:
Assets, fair value	10,966	2,215
State and municipal obligations \| Level 1
Assets:
Assets, fair value	0	0
State and municipal obligations \| Level 2
Assets:
Assets, fair value	10,966	2,215
State and municipal obligations \| Level 3
Assets:
Assets, fair value	0	0
Asset-backed securities
Assets:
Assets, fair value	498,414	493,934
Asset-backed securities \| Level 1
Assets:
Assets, fair value	0	0
Asset-backed securities \| Level 2
Assets:
Assets, fair value	498,414	493,934
Asset-backed securities \| Level 3
Assets:
Assets, fair value	0	0
Corporate bonds and other debt securities
Assets:
Assets, fair value	567,306	444,895
Corporate bonds and other debt securities \| Level 1
Assets:
Assets, fair value	58,240	0
Corporate bonds and other debt securities \| Level 2
Assets:
Assets, fair value	509,066	444,895
Corporate bonds and other debt securities \| Level 3
Assets:
Assets, fair value	0	0
Preferred stock and other equity securities
Assets:
Assets, fair value	145,951	169,575
Preferred stock and other equity securities \| Level 1
Assets:
Assets, fair value	7,135	2,052
Preferred stock and other equity securities \| Level 2
Assets:
Assets, fair value	138,816	167,523
Preferred stock and other equity securities \| Level 3
Assets:
Assets, fair value	0	0
Derivative assets - Interest rate contracts \| Interest Rate Swap
Assets:
Assets, fair value	44,057	21,553
Derivative assets - Interest rate contracts \| Level 1 \| Interest Rate Swap
Assets:
Assets, fair value	0	0
Derivative assets - Interest rate contracts \| Level 2 \| Interest Rate Swap
Assets:
Assets, fair value	44,057	21,553
Derivative assets - Interest rate contracts \| Level 3 \| Interest Rate Swap
Assets:
Assets, fair value	$ 0	$ 0

Fair Value Measurements - Signi

Fair Value Measurements - Significant Unobservable Inputs in Fair Value Measurement Level 3 Assets and Liabilities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, fair value	$ 25,654	$ 39,340
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, fair value	6,284,628	5,207,971
Fair Value, Measurements, Nonrecurring \| Level 3 \| Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, fair value	12,006	9,582
Fair Value, Measurements, Nonrecurring \| Level 3 \| Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, fair value	$ 25,654	$ 39,340
Range	10.00%
Fair Value, Measurements, Nonrecurring \| Level 3 \| Minimum \| Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range	3.50%
Fair Value, Measurements, Nonrecurring \| Level 3 \| Maximum \| Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range	10.00%

Fair Value Measurements - Sum66

Fair Value Measurements - Summary of Fair Value Measurements Related to Collateral Dependent Impaired Loans and OREO are Classified Within Level 3 of the Fair Value Hierarchy (Detail) - Fair Value, Measurements, Nonrecurring - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Impaired loans
Negative valuation adjustments:
Negative fair valuation adjustments	$ 156	$ 0	$ 222	$ 1,011
Foreclosed real estate
Negative valuation adjustments:
Negative fair valuation adjustments	$ 225	$ 122	$ 1,120	$ 242

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values, as well as the Level Within the Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 87,334	$ 102,460	$ 84,759	$ 107,085
Available for sale securities	1,672,089	1,524,622
FHLB and other bank stock	43,486	59,477
Loans held for sale	15,748	2,514
Bank-owned life insurance	172,105	168,246
Deposits	6,917,563	5,430,638
Advances from the FHLB and other borrowings	568,175	983,183
Derivative liabilities - Interest rate contracts	44,057	21,551
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	87,334	102,460
Available for sale securities	1,672,089	1,524,622
FHLB and other bank stock	43,486	59,477
Loans, net	6,233,708	5,164,061
Loans held for sale	15,748	2,514
Bank-owned life insurance	172,105	168,246
Derivative assets - Interest rate contracts	44,057	21,553
Deposits	6,917,563	5,430,638
Advances from the FHLB and other borrowings	568,175	983,183
Derivative liabilities - Interest rate contracts	44,057	21,553
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	87,334	102,460
Available for sale securities	1,672,089	1,524,622
FHLB and other bank stock	43,486	59,477
Loans, net	6,284,628	5,207,971
Loans held for sale	15,748	2,514
Bank-owned life insurance	172,105	168,246
Derivative assets - Interest rate contracts	44,057	21,553
Deposits	6,921,862	5,430,501
Advances from the FHLB and other borrowings	569,739	981,997
Derivative liabilities - Interest rate contracts	44,057	21,553
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	87,334	102,460
Available for sale securities	65,375	2,052
FHLB and other bank stock	0	0
Loans, net	0	0
Loans held for sale	0	0
Bank-owned life insurance	0	0
Derivative assets - Interest rate contracts	0	0
Deposits	0	0
Advances from the FHLB and other borrowings	0	0
Derivative liabilities - Interest rate contracts	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	1,606,714	1,522,570
FHLB and other bank stock	43,486	59,477
Loans, net	0	0
Loans held for sale	15,748	2,514
Bank-owned life insurance	172,105	168,246
Derivative assets - Interest rate contracts	44,057	21,553
Deposits	6,921,862	5,430,501
Advances from the FHLB and other borrowings	569,739	981,997
Derivative liabilities - Interest rate contracts	44,057	21,553
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	0	0
FHLB and other bank stock	0	0
Loans, net	6,284,628	5,207,971
Loans held for sale	0	0
Bank-owned life insurance	0	0
Derivative assets - Interest rate contracts	0	0
Deposits	0	0
Advances from the FHLB and other borrowings	0	0
Derivative liabilities - Interest rate contracts	$ 0	$ 0