Heritage Insurance (HRTG) 10-K 12 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 07, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Trading Symbol	HRTG
Entity Registrant Name	HERITAGE INSURANCE HOLDINGS, INC.
Entity Central Index Key	0001598665
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		30,360,758
Entity Public Float			$ 370,254,852

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Fixed maturity securities, available for sale, at fair value (amortized cost of $518,391 and $552,458)	$ 509,649	$ 549,796
Equity securities, available for sale, at fair value (cost of $18,698 and $17,548)	16,456	17,217
Total investments	526,105	567,013
Cash and cash equivalents	250,117	153,697
Restricted cash	12,253	20,833
Accrued investment income	4,468	5,057
Premiums receivable, net	57,000	67,757
Reinsurance recoverable on paid and unpaid claims	317,930	357,357
Prepaid reinsurance premiums	233,071	227,764
Income taxes receivable	35,586	37,338
Deferred policy acquisition costs, net	73,055	41,678
Property and equipment, net	17,998	18,748
Intangibles, net	76,850	101,626
Goodwill	152,459	152,459
Other assets	11,821	19,883
Total Assets	1,768,713	1,771,210
LIABILITIES AND STOCKHOLDERS' EQUITY
Unpaid losses and loss adjustment expenses	432,359	470,083
Unearned premiums	472,357	475,334
Reinsurance payable	166,975	17,577
Long-term debt, net	148,794	184,405
Deferred income tax	7,705	34,333
Advance premiums	20,000	23,648
Accrued compensation	9,226	16,477
Accounts payable and other liabilities	85,964	169,537
Total Liabilities	1,343,380	1,391,394
Commitments and contingencies (Note 15)
Stockholders’ Equity:
Common stock, $0.0001 par value, 50,000,000 shares authorized, 30,083,559 shares issued and 29,477,756 outstanding at December 31, 2018 and 26,560,004 shares issued and 25,885,004 outstanding at December 31, 2017	3	3
Additional paid-in capital	325,292	294,836
Accumulated other comprehensive loss	(6,527)	(3,064)
Treasury stock, at cost, 7,214,797 shares and 7,099,597 shares	(89,185)	(87,185)
Retained earnings	195,750	175,226
Total Stockholders' Equity	425,333	379,816
Total Liabilities and Stockholders' Equity	$ 1,768,713	$ 1,771,210

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Fixed maturities available for sale, at amortized cost	$ 518,391	$ 552,458
Equity securities, cost	$ 18,698	$ 17,548
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	30,083,559	26,560,004
Common stock, shares outstanding	29,477,756	25,885,004
Treasury stock, shares	7,214,797	7,099,597

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES:
Gross premiums written	$ 923,349	$ 625,565	$ 626,704
Change in gross unearned premiums	2,977	17,739	13,814
Gross premiums earned	926,326	643,304	640,518
Ceded premiums	(472,144)	(263,740)	(228,797)
Net premiums earned	454,182	379,564	411,721
Net investment income	13,280	11,332	9,181
Net realized (losses) gains	(2,477)	564	1,733
Other revenue	15,186	15,163	16,323
Total revenues	480,171	406,623	438,958
EXPENSES:
Losses and loss adjustment expenses	237,425	201,482	238,862
Policy acquisition costs, net of ceding commission income of $54,964, $8,600, and $0	84,666	83,892	84,421
General and administrative expenses, net of ceding commission income of $18,120, $0 and $0	88,544	71,714	58,910
Total expenses	410,635	357,088	382,193
Operating income	69,536	49,535	56,765
Interest expense, net	20,015	13,210	362
Other non-operating loss, net	10,527	42,217
Income (loss) before income taxes	38,994	(5,892)	56,403
Provision for income taxes	11,839	(4,773)	22,538
Net income (loss)	27,155	(1,119)	33,865
OTHER COMPREHENSIVE INCOME
Change in net unrealized (losses) gains on investments	(5,700)	5,688	(3,120)
Reclassification adjustment for net realized investment losses (gains), net of unrealized losses from equity securities	163	(564)	(1,733)
Income tax benefit (expense) related to items of other comprehensive income	2,232	(3,170)	1,868
Total comprehensive income	$ 23,850	$ 835	$ 30,880
Weighted average shares outstanding
Basic	25,941,253	26,798,465	29,632,171
Diluted	26,095,874	26,798,465	29,634,349
Earnings (loss) per share
Basic	$ 1.05	$ (0.04)	$ 1.14
Diluted	$ 1.04	$ (0.04)	$ 1.14

Consolidated Statements of Op_2

Consolidated Statements of Operations and Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Ceding commission income		$ 8,600
Policy Acquisition Costs [Member]
Ceding commission income	$ 54,964	8,600	$ 0
General and Administrative Expenses [Member]
Ceding commission income	$ 18,120	$ 0	$ 0

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-In-Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2015	$ 356,553	$ 3	$ 202,628	$ 155,955		$ (2,033)
Beginning Balance, Shares at Dec. 31, 2015		30,441,410
Net unrealized change in investments, net of tax	(2,985)					(2,985)
Stock buy-back	(25,562)				$ (25,562)
Stock buy-back, Shares		(1,759,330)
Shares tendered for income tax withholding on share-based compensation awards	(977)		(977)
Shares tendered for income tax withholding on share-based compensation awards, Shares		(66,637)
Stock-based compensation on vested restricted stock	4,815		4,815
Stock-based compensation on vested restricted stock, Shares		225,000
Dividends declared on common stock	(7,011)			(7,011)
Excess tax expense on stock-based compensation	(739)		(739)
Net (loss) income	33,865			33,865
Ending balance at Dec. 31, 2016	357,959	$ 3	205,727	182,809	(25,562)	(5,018)
Ending balance, Shares at Dec. 31, 2016		28,840,443
Net unrealized change in investments, net of tax	1,954					1,954
Stock buy-back	(61,623)				(61,623)
Stock buy-back, Shares		(5,340,267)
Shares tendered for income tax withholding on share-based compensation awards	(1,599)		(1,599)
Shares tendered for income tax withholding on share-based compensation awards, Shares		(87,067)
Stock-based compensation on vested restricted stock	4,815		4,815
Stock-based compensation on vested restricted stock, Shares		225,000
Stock issued in connection with acquisition of business	40,000		40,000
Stock issued in connection with acquisition of business, Shares		2,222,215
Reclassification of derivative liability to equity	51,641		51,641
Deferred tax on convertible debt	(6,165)		(6,165)
Dividends declared on common stock	(6,464)			(6,464)
Exercise of stock options	417		417
Exercise of stock options, Shares		24,680
Net (loss) income	(1,119)			(1,119)
Ending balance at Dec. 31, 2017	379,816	$ 3	294,836	175,226	(87,185)	(3,064)
Ending balance, Shares at Dec. 31, 2017		25,885,004
Cumulative effect of change in accounting principle (ASU 2016-01), net of tax at Dec. 31, 2017				(267)		267
Ending balance as adjusted at Dec. 31, 2017	379,816	$ 3	294,836	174,959	(87,185)	(2,797)
Net unrealized change in investments, net of tax	(3,306)					(3,306)
Stock buy-back	(2,000)				(2,000)
Stock buy-back, Shares		(115,200)
Shares tendered for income tax withholding on share-based compensation awards	(1,839)		(1,839)
Shares tendered for income tax withholding on share-based compensation awards, Shares		(112,500)
Stock-based compensation on vested restricted stock	5,273		5,273
Stock-based compensation on vested restricted stock, Shares		225,000
Convertible Option debt extinguishment, net of tax	(26,011)		(26,011)
Convertible notes converted into common stock	53,044		53,044
Convertible notes converted into common stock, Shares		3,595,452
Reclassification of income taxes upon early adoption of ASU 2018-02				424		(424)
Deferred tax change rate	(419)		(11)	(408)
Dividends declared on common stock	(6,380)			(6,380)
Net (loss) income	27,155			27,155
Ending balance at Dec. 31, 2018	$ 425,333	$ 3	$ 325,292	$ 195,750	$ (89,185)	$ (6,527)
Ending balance, Shares at Dec. 31, 2018		29,477,756

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
OPERATING ACTIVITIES
Net income (loss)	$ 27,155	$ (1,119)	$ 33,865
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Stock-based compensation	5,273	4,815	4,815
Bond amortization and accretion	6,247	8,810	8,016
Amortization of original issuance discount on debt	3,885	2,314
Depreciation and amortization	27,070	7,742	8,976
Net realized loss (gain)	399	(564)	(1,733)
Net change in unrealized losses of equity securities	2,078
Change in fair value of option feature		41,013
Net loss on property held for sale	737
Net loss (gain) on repurchase of debt	9,790	1,203
Deferred income taxes, net of acquired	(21,563)	19,619	3,103
Changes in operating assets and liabilities:
Accrued investment income	589	303	(1,355)
Premiums receivable, net	10,757	(910)	(10,754)
Prepaid reinsurance premiums	(5,307)	16,223	(23,300)
Reinsurance premiums receivable and recoverable	39,427	(284,284)
Income taxes receivable	1,752	(28,598)	(10,713)
Deferred policy acquisition costs, net	(31,377)	1,101	(7,979)
Other assets	8,062	(4,907)	177
Unpaid losses and loss adjustment expenses	(37,724)	236,142	56,415
Unearned premiums	(2,977)	(17,740)	(13,814)
Reinsurance payable	149,398	(79,106)	36,457
Accrued interest	(1,993)	3,217
Income taxes payable			(2,092)
Accrued compensation	(7,251)	3,355	779
Advance premiums	(3,648)	3,155	4,336
Other liabilities	(85,351)	75,705	(2,244)
Net cash provided by operating activities	95,428	7,489	82,955
INVESTING ACTIVITIES
Proceeds from sales and maturities of investments available for sale	245,313	349,906	180,190
Purchases of investments available for sale	(218,667)	(215,844)	(317,666)
Acquisition of a business, net of cash acquired		(140,919)	(110,319)
Cost of property and equipment acquired	(2,281)	(385)	(1,621)
Net cash provided by (used in) investing activities	24,365	(7,242)	(249,416)
FINANCING ACTIVITIES
Proceeds from convertible notes		136,750	77,910
Proceeds from long-term debt	114,200
Repurchase of convertible notes	(52,739)	(25,189)
Debt acquisition costs	(3,431)	(5,609)
Proceeds from mortgage loan		12,658
Proceeds from exercise of stock options		417
Excess tax expense on stock-based compensation			(739)
Mortgage loan payments	(264)
Repayments of long-term debt	(79,500)
Tax withholding on share-based compensation awards	(1,839)	(1,599)	(977)
Purchase of treasury stock	(2,000)	(61,623)	(25,562)
Dividends	(6,380)	(8,249)	(6,806)
Net cash (used in) provided by financing activities	(31,953)	47,556	43,826
Increase in cash, cash equivalents, and restricted cash	87,840	47,803	(122,635)
Cash, cash equivalents and restricted cash, beginning of period	174,530	126,727	249,362
Cash, cash equivalents and restricted cash, end of period	262,370	174,530	126,727
Supplemental Cash Flows Information:
Income taxes paid, net	31,289	4,500	$ 31,912
Interest paid	17,573	4,054
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Original issue discount on convertible notes		16,838
Issuance of shares on conversion of convertible notes	$ 53,044
Issuance of shares for consideration in the acquisition of a business		$ 40,000

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 250,117	$ 153,697
Restricted cash	12,253	20,833
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows	$ 262,370	$ 174,530	$ 126,727	$ 249,362

Basis of Presentation, Nature o

Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices	Note 1. Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices Business Description Heritage Insurance Holdings, Inc. (the “Company”, “we”, “our”, “us”) was initially formed as a Florida limited liability company in 2012. On January 1, 2014, the Company formed a Delaware limited liability company, also named Heritage Insurance Holdings, LLC and merged with it in order to domicile the Company in Delaware. Effective May 22, 2014, Heritage Insurance Holdings, LLC converted into a Delaware corporation named Heritage Insurance Holdings, Inc. As used in these consolidated financial statements, the terms “the Company”, “we”, “our” and “us” also refer to Heritage Insurance Holdings, LLC and its consolidated subsidiaries prior to our conversion to a Delaware corporation. Our insurance subsidiaries are Heritage Property & Casualty Insurance Company (“Heritage P&C”), Zephyr Insurance Company (“Zephyr”), Narragansett Bay Insurance Company (“NBIC”) and Pawtucket Insurance Company (“PIC”). PIC is currently inactive and has no policies in force or outstanding claims. Our other subsidiaries include: Heritage MGA, LLC (“MGA”), the managing general agent that manages substantially all aspects of our insurance subsidiaries’ business; Contractors’ Alliance Network, LLC, our vendor network manager, which includes BRC Restoration Specialists, Inc., our restoration service; Skye Lane Properties, LLC, our property management subsidiary; First Access Insurance Group, LLC, our retail agency; Osprey Re Ltd., our reinsurance subsidiary that may provide a portion of the reinsurance protection purchased by our insurance subsidiaries; Heritage Insurance Claims, LLC, an inactive subsidiary reserved for future development; Zephyr Acquisition Company (“ZAC”); NBIC Holdings, Inc., NBIC Service Company which provides services to NBIC and Westwind Underwriters, Inc., an inactive subsidiary of NBIC Holdings, Inc. Our primary products are personal and commercial residential insurance, which we currently offer in Alabama, Connecticut, Florida, Georgia, Hawaii, Massachusetts, New Jersey, New York, North Carolina, Rhode Island and South Carolina. We conduct our operations under a single reporting segment. Basis of Presentation The consolidated financial statements include the accounts of Heritage Insurance Holdings, Inc. and its wholly-owned subsidiaries. The accompanying consolidated financial statements include the accounts of the Company and all other entities in which the Company has a controlling financial interest (none of which are variable interest entities). All intercompany accounts and transactions have been eliminated in consolidation. The Company qualifies as an “emerging growth company” as defined in Section 2(a)(19) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). As a result, the Company is eligible for certain exemptions from various reporting requirements applicable to other public companies that are not emerging growth companies. The Company intends to continue to take advantage of some, but not all, of the exemptions available to emerging growth companies until such time that it is no longer an emerging growth company. The Company has, however, irrevocably elected not to take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards. As a result, the Company will comply with new or revised accounting standards on the relevant dates on which adoption of such standards is required for non-emerging growth companies. Use of Estimates The preparation of consolidated financial statements in conformity with United States Generally Accepted Accounting Principles (“U.S. GAAP”) requires us to make estimates and assumptions about future events that affect the amounts reported in our consolidated financial statements and accompanying notes. We evaluate our estimates on an ongoing basis when updated information related to such estimates becomes available. We base our estimates on historical experience and information available to us at the time these estimates are made. Actual results could differ materially from these estimates. Cash and Cash Equivalents The Company’s cash and cash equivalents include demand deposits with financial institutions and short-term, highly-liquid financial instruments with original maturities of three months or less when purchased. The carrying amounts reported in the consolidated balance sheets for interest bearing deposits approximate their fair value because of the short maturity of these financial instruments. The Company excludes from cash and cash equivalents negative cash balances that the Company has with an individual financial institution. The liability presents outstanding checks not yet presented to the financial institution and is reported in accounts payable and other liabilities. Restricted Cash As of December 31, 2018, and 2017, restricted cash was $12.3 million and $20.8 million, respectively. For the years ended December 31, 2018 and 2017, Heritage P&C held approximately $9.0 million and $18.3 million relating to a reinsurance agreement with an entity that issued catastrophe (“CAT”) bonds, as Heritage P&C is contractually required to deposit certain installments of reinsurance premiums into a trust account and $3.2 million and $2.5 million in restricted cash relating to individual regulatory state deposits, respectively. The Company earned interest income of approximately $36,532 and $25,672 on its restricted cash deposits. Investments The Company classifies all of its investments in debt securities as available-for-sale and reports them at fair value. Subsequent to its acquisition of debt securities available-for-sale, the Company records changes in value through the date of disposition as unrealized holding gains and losses, net of tax effects, and includes them as a component of other comprehensive income. Equity securities are recorded at fair value with changes in fair value reflected in net income and presented with realized holding gains and losses. The Company includes realized gains and losses, which it calculates using the specific-identification method for determining the cost of securities sold, in net income. The Company amortizes any premium or discount on fixed maturities over the remaining maturity period of the related securities using the effective interest method, and reports the amortization in net investment income. The Company recognizes dividends and interest income when earned. Quarterly, the Company performs an assessment of its debt securities available-for-sale to determine if any are “other-than-temporarily” impaired. An investment is impaired when the fair value of the investment declines to an amount less than the cost or amortized cost of that investment. As part of the assessment process, the Company determines whether the impairment is temporary or “other-than-temporary”. The Company bases its assessment on both quantitative criteria and qualitative information, considering a number of factors including, but not limited to: how long the security has been impaired; the amount of the impairment; the Company intends to sell the investment or it is more likely than not that the Company will have to sell the investment before it recovers the amortized cost or cost; the financial condition and near-term prospects of the issuer; whether the issuer is current on contractually-obligated interest and principal payments; key corporate events pertaining to the issuer and whether the market decline was affected by macroeconomic conditions. If the Company were to determine that a debt security or participation in a commercial mortgage loan was impaired and the Company either intends to sell the investment or it is more likely than not that the Company will have to sell the investment before it is able to recover the amortized cost or cost, then the Company would record the full amount of the impairment in its consolidated statement of operations and other comprehensive income. A large portion of the Company’s investment portfolio consists of debt securities available-for-sale, which may be adversely affected by changes in interest rates as a result of governmental monetary policies, domestic and international economic and political conditions and other factors beyond its control. A rise in interest rates would decrease the net unrealized holding gains of our investment portfolio, offset by the Company’s ability to earn higher rates of return on funds reinvested. Conversely, a decline in interest rates would increase the net unrealized holding gains of our investment portfolio, offset by lower rates of return on funds reinvested. Accumulated other comprehensive income consists solely of debt securities available-for-sale unrealized gains and loss investments and is presented net of income tax. Fair Value Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants (an exit price). When reporting the fair values of the Company’s financial instruments, the Company prioritizes those fair value measurements into one of three levels based on the nature of the inputs, as follows: • Level 1—Assets and liabilities with values based on unadjusted quoted prices for identical assets or liabilities in an active market that the Company is able to access; • Level 2—Asset and liabilities with values based on quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets in markets that are not active; or valuation models with inputs that are observable, directly or indirectly for substantially the term of the asset or liability. • Level 3—certain inputs are unobservable (supported by little or no market activity) and significant to the fair value measurement. Unobservable inputs reflect the Company’s best estimate of what hypothetical market participants would use to determine a transaction price for the asset or liability at the reporting date based on the best information available in the circumstances. The Company estimates the fair value of its investments using the closing prices on the last business day of the reporting period, obtained from active markets such as the NYSE and NASDAQ. For securities for which quoted prices in active markets are unavailable, the Company uses observable inputs such as quoted prices in inactive markets, quoted prices in active markets for similar instruments, benchmark interest rates, broker quotes and other relevant inputs. The Company does not have any investments in its portfolio which require the use of unobservable inputs. The Company’s estimate of fair value reflects the interest rate environment that existed as of the close of business on December 31, 2018. Changes in interest rates after December 31, 2018 may affect the fair value of the Company’s investments. The Company believes the carrying amounts of its cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, and other current liabilities approximate their fair values at December 31, 2018 and 2017, due to the immediate or short-term maturity of these instruments. The Company’s non-financial assets, such as goodwill and property, plant and equipment are carried at cost until there are indicators of impairment and are recorded at fair value only when an impairment charge is recognized. Long term debt is recorded at carrying value, see Note 12 – Long-Term Debt Premiums The Company records direct and assumed premiums written as revenue net of ceded amounts on a daily pro rata basis over the contract period of the related in force policies or reinsurance contract. For any portion of premiums not earned at the end of the reporting period, the Company records an unearned premium liability. In a one-time only transaction on September 1, 2017, the Company took over approximately 19,000 policies representing approximately $30.0 million in annualized premiums from Sawgrass Mutual Insurance Company. Premiums receivable represents amounts due from our policyholders for billed premiums and related policy fees. We perform a policy-level evaluation to determine the extent to which the balance of premiums receivable exceeds the balance of unearned premiums. We then age any resulting exposure based on the last date the policy was billed to the policyholder, and we establish an allowance for credit losses for any amounts outstanding for more than 90 days. When we receive payments on amounts previously charged off, we reduce bad debt expense in the period we receive the payment. Balances in premiums receivable and the associated allowance account are removed upon cancellation of the policy due to non-payment. We recorded no allowance for the years ended December 31, 2018 and 2017, respectively. Bad debt expense related to uncollectible premiums was $0, $0 and $250,000 for the years ended December 31, 2018, 2017 and 2016, respectively. When the Company receives premium payments from policyholders prior to the effective date of the related policy, the Company records an advance premiums liability. On the policy effective date, the Company reduces the advance premium liability and records the premiums as described above. Policy Acquisition Costs The Company incurs policy acquisition costs that vary with, and are directly related to, the production of new business. Policy acquisition costs consist of the following four items: (i) commissions paid to outside agents at the time of policy issuance; (ii) policy administration fees paid to a third-party administrator at the time of policy issuance; (iii) premium taxes; and (iv) inspection fees. The Company capitalizes policy acquisition costs to the extent recoverable, then the Company amortizes those costs over the contract period of the related policy. At each reporting date, the Company determines whether it has a premium deficiency. A premium deficiency would result if the sum of the Company’s expected losses, deferred policy acquisition costs, and policy maintenance costs (such as costs to store records and costs incurred to collect premiums and pay commissions) exceeded the Company’s related unearned premiums plus investment income. Should the Company determine that a premium deficiency exists, the Company would write off the unrecoverable portion of deferred policy acquisition cost. NBIC earns ceding commission on its gross and net quota share reinsurance contracts. Our accounting policy is to allocate ceding commission between policy acquisition costs and general and administrative expenses for financial reporting purposes. Ceding commission is allocated between policy acquisition costs and general and administrative expenses based upon the proportion these costs bear to production of new business. For the year ended December 31, 2018, NBIC earned ceding commission income of $72.5 million of which $55.0 million was allocable to policy acquisition costs compared to ceding commission income earned of $8.6 million for the month and year ended December 31, 2017 after the NBIC transaction that was allocated to policy acquisition costs. Ceding commission income is deferred and recognized over the quota share contract period. The amount and rate of ceding reinsurance commissions earned on the net quota share contract can slide within a prescribed minimum and maximum, depending on loss performance and how future losses develop. Long-Lived Assets—Property and Equipment Property and equipment is stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives as follows: building—40 years; computer hardware and software 3—years; office and furniture equipment—3 to 7 years. Leasehold improvements are amortized over the shorter of the lease term or the asset’s useful life. Expenditures for improvements are capitalized to the property accounts. Replacements and maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred. Business Acquisition The application of the purchase method of accounting for business combinations requires the use of significant estimates and assumptions in determining the fair value of assets acquired and liabilities assumed in order to properly allocate the fair value of the acquired business. The estimates of the fair value of the assets acquired and liabilities assumed are based upon assumptions believed to be reasonable using established valuation techniques that consider a number of factors and when appropriate, valuations performed by independent third-party appraisers. Assets acquired, and liabilities assumed in connection with business combinations are recorded based on their respective fair values at the date of acquisition. Goodwill and Intangible Assets Goodwill represents the excess of costs over the fair value of net assets acquired. Goodwill is subject to evaluation for impairment using a fair value-based test. This evaluation is performed annually, during the fourth quarter or more frequently if facts and circumstances warrant. The Company uses a qualitative approach to test goodwill for impairment by first assessing qualitative factors to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. The Company applies this qualitative approach as of October 1 annually to any and all reporting units. If required following the qualitative assessment, the first step in the goodwill impairment test involves comparing the fair value of each of a reporting unit to the carrying value of a reporting unit. If the carrying value of a reporting unit exceeds the fair value of the reporting unit, the Company is required to proceed to the second step. In the second step, the fair value of the reporting unit would be allocated to the assets (including unrecognized intangibles) and liabilities of the reporting unit, with any residual representing the implied fair value of goodwill. An impairment loss would be recognized if, and to the extent that, the carrying value of goodwill exceeded the implied value. The Company reviews amortizable intangible assets for impairment whenever events or circumstances indicate that carrying amounts may not be recoverable. If the Company concludes that impairment exists, the carrying amount is reduced to fair value. No impairment was recognized in any period presented. Impairment of Long-Lived Assets Including Intangible Assets Subject to Amortization The Company assesses the recoverability of long-lived assets when events or circumstances indicate that the assets might have become impaired. The Company determines whether the assets can be recovered from undiscounted future cash flows and, if not recoverable, the Company recognizes impairment to reduce the carrying value to fair value. Recoverability of long-lived assets is dependent upon, among other things, the Company’s ability to maintain profitability, so as to be able to meet its obligations when they become due. No impairment was recognized in any period presented. Unpaid Losses and Loss Adjustment Expenses The Company’s reserves for unpaid losses and loss adjustment expenses represent the estimated ultimate cost of settling all reported claims plus all claims we incurred related to insured events that have occurred as of the reporting date, but that policyholders have not yet reported to the Company (incurred but not reported, or “IBNR”). The Company estimates its reserves for unpaid losses and loss adjustment expenses using individual case-based estimates for reported claims and actuarial estimates for IBNR losses. The Company continually reviews and adjusts its estimated losses as necessary based on industry development trends, the Company’s evolving claims experience and new information obtained. If the Company’s unpaid losses and loss adjustment expenses are considered to be deficient or redundant, the Company increases or decreases the liability in the period in which it identifies the difference and reflects the change in its current period results of operations. Though the Company’s estimate of the ultimate cost of settling all reported and unreported claims may change at any point in the future, a reasonable possibility exists that its estimate may vary significantly in the near term from the estimated amounts included in the Company’s consolidated financial statements. The Company reports its reserves for unpaid losses and loss adjustment expenses gross of the amounts related to unpaid losses recoverable from reinsurers and reports loss and loss adjustment expenses net of amounts ceded to reinsurers. The Company does not discount its loss reserves for financial statement purposes. The Company remains liable for claims payments if any reinsurer is unable to meet its obligations under the reinsurance agreements. Failure of reinsurers to honor their obligations could result in losses to the Company. The Company evaluates the financial condition of its reinsurers and monitors concentration of credit risk arising from similar geographic regions, activities or economics characteristics of the reinsurers to minimize its exposure to significant loses from reinsurers insolvencies. The Company contracts with several reinsurers to secure its annual reinsurance coverage, which the excess of loss treaties generally becomes effective June 1st each year. The Company purchases reinsurance each year taking into consideration probable maximum losses and reinsurance market condition. Other revenue Our insurance affiliates may charge policyholders a policy fee on each policy written; these fees are not subject to refund, and the Company recognizes the income immediately when collected. The Company also charges pay-plan fees to policyholders that pay its premiums in more than one installment and records the fees as income when collected. Other income includes rental income due under non-cancelable leases for space at the Company’s commercial property. Reinsurance The Company follows industry practice of reinsuring a portion of our risks. Reinsurance involves transferring, or “ceding”, all or a portion of the risk exposure on policies the Company writes to another insurer, known as a reinsurer. To the extent that the Company’s reinsurers are unable to meet the obligations they assume under the Company’s reinsurance agreements, the Company remains liable for the entire insured loss. The Company’s reinsurance agreements are generally short-term, prospective contracts. The Company records an asset, prepaid reinsurance premiums, and a liability, reinsurance payable, for the entire contract amount upon commencement of new reinsurance agreements. The Company amortizes its prepaid reinsurance premiums over the 12-month contract period. When the Company incurs losses recoverable under its reinsurance program, the Company records amounts recoverable from its reinsurers on paid losses plus an estimate of amounts recoverable on unpaid losses. The estimate of amounts recoverable on unpaid losses is a function of the Company’s liability for unpaid losses associated with the reinsured policies; therefore, the amount changes in conjunction with any changes to the estimate of unpaid losses. Given that an estimate of amounts recoverable from reinsurers on unpaid losses may change at any point in the future because of its relation to the Company’s reserves for unpaid losses, a reasonable possibility exists that an estimated recovery may change significantly from initial estimates. The Company estimates uncollectible amounts receivable from reinsurers based on an assessment of factors including the creditworthiness of the reinsurers and the adequacy of collateral obtained, where applicable. The Company recorded no uncollectible amounts under its reinsurance program or bad debt expense related to reinsurance for the years ended December 31, 2018, 2017 and 2016. Assessment Guaranty fund and other insurance-related assessments imposed upon the Company’s insurance company affiliates are recorded as policy acquisition costs in the period the regulatory agency imposes the assessment. To recover guaranty or other insurance-related assessments, the Company in turn submits a plan for recoupment to the Insurance Commissioner for approval and upon approval, begins collecting a policy surcharge that will allow it to collect the prior year’s assessments. There were no assessments during the periods presented. The Company collects other assessments imposed upon policyholders as a policy surcharge and records the amounts collected as a liability until the Company remits the amounts to the regulatory agency that imposed the assessment. Long-Term Debt A long-term debt instrument with embedded features such as conversion and redemption options is evaluated to determine whether bifurcation and derivative accounting is applicable. If such instrument is not subject to derivative accounting, it is further evaluated to determine if the Company is required to separately account for the liability and equity components. To determine the carrying values of the debt and derivative components at issuance, the Company measures the fair value of a similar liability, including any embedded features other than the conversion option, and assigns such value to the liability or equity component. The liability component’s fair value is then subtracted from the initial proceeds to determine the carrying value of the debt. Convertible Notes In August 2017 and September 2017, the Company issued collectively $136.8 million of 5.875% Convertible Senior Notes (the “Convertible Notes”) due August 1, 2037. The Convertible notes are accounted for in accordance with ASC 470-20. At the time of issuance and until December 1, 2017, the Company recorded the fair value of the derivatives on its balance sheet at fair value with changes in the values of these derivatives reflected in the consolidated statement of operations. Beginning December 1, 2017, the conversion option of the Convertibles Notes qualifies for the equity classification and will no longer be accounted for as a separate derivative instrument liability in accordance with applicable U.S. GAAP guidance. The Company separately accounts for the liability and equity components of Convertible Notes that can be settled in cash by allocating the proceeds from issuance between the liability component and the embedded conversion option, or equity component, in accordance with accounting for convertible debt instruments that may be settled in cash (including partial cash settlement) upon conversion. The value of the equity component is calculated by first measuring the fair value of the liability component, using the interest rate of a similar liability that does not have a conversion feature, as of the issuance date. The difference between the proceeds from the convertible debt issuance and the amount measured as the liability component is recorded as the equity component with a corresponding discount recorded on the debt. The Company recognizes the accretion of the resulting discount using the effective interest method as part of interest expense in its consolidated statements of operations. Debt Extinguishment The Company has reacquired convertible senior notes over a series of transactions. In accordance with ASC 470 “ Debt Debt Issuance and Discount Costs In connection with the issuance of debt, any debt issuance and discount costs are reflected on the balance sheet as an offset to long-term debt and amortized using the effective interest method over the life of the underlying debt instrument. Stock-Based Compensation The Company measures stock-based compensation at the grant date based on the fair value of the award and recognizes stock-based compensation expense over the requisite vesting period. Determining the fair value of stock option awards requires judgment, including estimating stock price volatility, forfeiture rates and expected option life. Restricted stock awards are valued based on the fair value of the stock on the grant date and the related compensation expense is recognized over the vesting period. Earnings Per Share The Company reports both basic earnings per share and diluted earnings per share. To calculate basic earnings per share, the Company divides net income attributable to common shareholders by the weighted-average number of shares outstanding during the period, including vested restricted shares. The Company calculates diluted earnings per share by dividing net income attributable to common shareholders by the weighted-average number of shares, and the effect of share equivalents, vested and unvested restricted shares and convertible notes outstanding during the period using the treasury stock method to calculate common stock equivalents. Income tax Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which we expect to recover or settle those temporary differences. The effect on deferred taxes and liabilities attributable to a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are recognized to the extent that there is sufficient positive evidence, as allowed under the Accounting Standard Codification Topic 740 ("ASC 740"), Income Taxes, to support the recoverability of those deferred tax assets. The Company establishes a valuation allowance to the extent that there is insufficient evidence to support the recoverability of the deferred tax asset under ASC 740. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies, and results of recent operations. If it is determined that the deferred tax assets would be realizable in the future in excess of their net recorded amount, an adjustment would be made to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. We recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more likely than not threshold, the amount recognized in the consolidated financial statements is the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant taxing authority. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Tax Act”), which makes broad and complex changes to the U.S. Tax code. One of the provisions of the Tax Act reduced the corporate federal income tax rate from 35% to 21% effective January 1, 2018. Pursuant to current accounting guidance, all deferred tax assets and liabilities were re-measured at December 31, 2017 to recognize the tax rate that is expected to apply when the tax effects are ultimately recognized in future periods upon the date of enactment. Concentrations of Risk The Company’s current operations subject us to the following concentrations of risk: • Revenue—The Company writes residential property and liability policies exclusively. • Geographic—The Company writes its premium in coastal states in the southeastern and northeastern United States and Hawaii • Group concentration of credit risk—All of the Company’s reinsurers engage in similar activities and have similar economic characteristics that could cause their ability to repay us to be similarly affected by changes in economic or other conditions. • Credit risk—The Company chooses to deposit all its cash at twelve financial institutions. The Company mitigates its geographic and group concentrations of risk by entering into reinsurance contracts with highly rated, financially-stable reinsurers, and by securing irrevocable letters of credit from reinsurers when necessary. With regard to cash, the Company had $244.6 million and $138.4 million i

Business Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business Acquisitions	Note 2. Business Acquisitions Acquisition of NBIC On November 30, 2017, the Company completed the acquisition of all the outstanding capital stock of NBIC Holdings, Inc., the parent company of Narragansett Bay Insurance Company, a leading specialty underwriter of personal residential insurance products and services in several states in the northeastern United States for $250.0 million, including $210.0 million in cash, plus 2,222,215 shares of the Company’s common stock with an aggregate fair value of $40.0 million. The completion of the NBIC acquisition represents a significant advancement in executing the Company’s geographic diversification strategy by leveraging our combined platform to accelerate growth along the Eastern region. The transaction was accounted for using the acquisition method of accounting, which requires, assets acquired, and liability assumed be recognized at their fair values as of the acquisition date. The Company recognized goodwill of $106 million, attributable to expected growth and profitability, none of which is expected to be deductible for income tax purposes. The table below presents the Company’s fair value of NBIC’s tangible and intangible assets acquired and liabilities assumed. The operations of NBIC are included in our audited consolidated statement of operations and comprehensive income effective November 30, 2017. The following table summarizes the allocation of the purchase price as of the balance sheet date: Purchase Consideration Cash and stock, net of cash acquired $ 180,919 Assets acquired Investments $ 101,215 Premiums and agent's receivable 24,127 Other assets 13,173 Prepaid reinsurance premiums 137,378 Reinsurance recoverable on paid and unpaid claims 73,073 Intangible assets 81,240 Total assets acquired $ 430,206 Liabilities assumed Unpaid losses and loss adjustment expenses 93,804 Unearned premiums 175,050 Reinsurance payable 16 Deferred revenue 57,809 Accounts payable 12,913 Other liabilities assumed 15,701 Total liabilities assumed $ 355,292 Net assets acquired $ 74,914 Goodwill (1) 106,005 Total purchase price, net of cash acquired $ 180,919 (1) Goodwill largely consists of expected synergies and economies of scale resulting from the business combination Unaudited Pro Forma Financial Information The following unaudited pro forma results of operations assume that NBIC acquisition occurred at the beginning of the periods presented. The pro forma amounts include certain adjustments, including depreciation and amortization expense and income taxes. The pro forma amounts for the twelve-month period below excludes acquisition-related charges. Accordingly, these unaudited pro forma results are presented for information purposes only and are not necessarily indicative of what have been if the acquisition have been if the acquisitions had occurred as of January 1, 2016, nor are the indicative of future results of operations. Year Ended December 31, 2017 2016 (in thousands, except per share) Revenue $ 456,560 $ 511,663 Net income $ 13,844 $ 42,397 Basic, earnings per share $ 0.48 $ 1.33 Diluted, earnings per share $ 0.47 $ 1.33

Investments

Investments	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Investments	Note 3. Investments The amortized cost, gross unrealized gains and losses, and fair value of the Company’s debt securities available-for-sale are as follows: December 31, 2018 Cost or Adjusted / Amortized Cost Gross Gains Gross Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities (1) $ 48,739 $ 40 $ 738 $ 48,041 States, municipalities and political subdivisions 60,028 46 785 59,289 Special revenue 249,026 210 3,881 245,355 Industrial and miscellaneous 155,678 81 3,302 152,457 Redeemable preferred stocks 4,920 — 413 4,507 $ 518,391 $ 378 $ 9,119 $ 509,649 (1) U.S. government and agency securities include pledged debt securities with an estimated fair value of $31.0 million under the terms and condition of the advance agreement entered into with a financial institution in 2018. The Company is permitted to withdraw or exchange any portion of the pledged collateral over the minimum requirement at any time. December 31, 2017 Cost or Adjusted / Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 39,445 $ 7 $ 572 $ 38,880 States, municipalities and political subdivisions 76,876 104 569 76,411 Special revenue 269,277 524 2,124 267,677 Industrial and miscellaneous 162,093 668 633 162,128 Redeemable preferred stocks 4,767 4 71 4,700 $ 552,458 $ 1,307 $ 3,969 $ 549,796 The following table presents debt securities available-for-sale by contractual maturity for the periods presented: December 31, 2018 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Debt Securities Available-for-sale (In thousands) (In thousands) Due in one year or less $ 41,529 8 % $ 41,382 8 % Due after one year through five years 177,298 34 % 175,227 34 % Due after five years through ten years 134,057 26 % 130,921 26 % Due after ten years 165,507 32 % 162,119 32 % Total $ 518,391 100 % $ 509,649 100 % December 31, 2017 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Debt Securities Available-for-sale (In thousands) (In thousands) Due in one year or less $ 81,783 15 % $ 81,668 15 % Due after one year through five years 169,452 31 % 168,671 31 % Due after five years through ten years 154,400 28 % 153,463 28 % Due after ten years 146,823 26 % 145,994 26 % Total $ 552,458 100 % $ 549,796 100 % The Company calculates the gain or loss realized on the sale of investments by comparing the sales price (fair value) to the cost or adjusted/amortized cost of the security sold. The Company determines the cost or adjusted/amortized of the security sold using the specific identification method. The following table details the Company’s realized gains (losses) by major investments category as of December 31, 2018 and 2017, respectively: 2018 2017 Gains (Losses) Fair Value at Sale Gains (Losses) Fair Value at Sale (In thousands) (In thousands) For the years ended December 31, Debt securities $ 85 $ 25,647 $ 2,732 $ 705,138 Equity securities 1 169 2,131 31,231 Total realized gains 86 25,816 4,863 736,369 Debt securities (249 ) 58,971 (363 ) 56,354 Equity securities (236 ) 4,840 (3,936 ) 11,806 Total realized losses (485 ) 63,811 (4,299 ) 68,160 Unrealized losses on equity securities (1) (2,078 ) — — — Net realized gain (losses) $ (2,477 ) $ 89,627 $ 564 $ 804,529 (1) Represents unrealized loss on securities held pursuant to ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities, effective January 1, 2018. Equity Securities Effective January 1, 2018, we adopted new accounting guidance that requires any changes in fair value of equity securities and other investments that are accounted for under the cost-method to be recognized immediately in realized gains and losses in net income. As a result, beginning on January 1, 2018, realized gains and losses from these investments include both sales of securities and unrealized gains and losses as follows: Years Ended December 31, 2018 (In thousands) Net losses recognized during the period on equity securities $ (2,314 ) Less: Net losses (gains) recognized from equity securities sold 236 Unrealized losses recognized on equity securities still held at reporting date (2,078 ) At December 31, 2017, the cost, gross unrealized appreciation, gross unrealized depreciation, and fair value of equity securities was $17.5 million, $137,833, ($535,428) and $17.2 million, respectively. At December 31, 2017 the net unrealized depreciation of $397,595 was recorded within accumulated other comprehensive income on the balance sheet. The following table summarizes the Company’s net investment income by major investment category for the years ended December 31, 2018 and 2017, respectively: For the Year Ended December 31, 2018 2017 2016 (In thousands) Debt securities available-for-sale $ 9,591 $ 10,368 $ 8,709 Equity securities 1,333 1,922 1,955 Cash, cash equivalents and short-term investments 1,703 960 226 Other investments 2,767 197 21,000 Net investment income 15,394 13,447 10,911 Investment expenses 2,114 2,115 1,730 Net investment income, less investment expenses $ 13,280 $ 11,332 $ 9,181 During the Company’s quarterly evaluations of its debt securities available-for-sale for impairment, the Company determined that none of its investments in debt securities that reflected an unrealized loss position were other-than-temporarily impaired. The issuers of the debt securities in which the Company invests continue to make interest payments on a timely basis and have not suffered any credit rating reductions. The Company does not intend to sell, nor is it likely that it would be required to sell, the debt securities before the Company recovers its amortized cost basis. The following tables present, for all debt securities available-for-sale in an unrealized loss position (including securities pledged), the aggregate fair value and gross unrealized by length of time the security has continuously been in an unrealized loss position: Less Than Twelve Months Twelve Months or More December 31, 2018 Number of Securities Gross Unrealized Losses Fair Value Number of Securities Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities 17 $ 129 $ 10,485 66 $ 609 $ 20,488 States, municipalities and political subdivisions 13 103 12,864 42 682 39,979 Industrial and miscellaneous 214 1,479 70,156 232 1,822 70,375 Special revenue 105 1,260 76,335 323 2,621 108,319 Redeemable preferred stocks 55 193 2,541 27 221 1,965 404 $ 3,164 $ 172,381 690 $ 5,955 $ 241,126 Less Than Twelve Months Twelve Months or More December 31, 2017 Number Securities Gross Unrealized Losses Fair Number of Securities Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities 53 $ 284 $ 20,053 24 $ 289 $ 9,294 States, municipalities and political subdivisions 51 359 49,803 8 210 10,503 Industrial and miscellaneous 284 376 87,898 38 256 11,788 Special revenue 295 777 133,580 183 1,347 69,359 Redeemable preferred stocks 41 66 3,987 17 5 61 724 $ 1,862 $ 295,321 270 $ 2,107 $ 101,005 The Company is required to maintain assets on deposits with various regulatory authorities to support its insurance and reinsurance operations.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 4. Goodwill and Other Intangible Assets For both years ended December 31, 2018 and 2017 goodwill was $152.5 million and intangible assets were $76.8 million and $101.6 million, respectively. The Company has recorded $1.3 million relating to insurance licenses classified as an indefinite lived intangible. Goodwill Goodwill (in thousands) Balance as of December 31, 2016 $ 46,454 Goodwill acquired 106,005 Impairment — Balance as of December 31, 2017 $ 152,459 Goodwill acquired — Impairment — Balance as of December 31, 2018 $ 152,459 Other intangible assets Our intangible assets resulted primarily from the acquisitions of Zephyr Acquisition Company and NBIC Holdings, Inc. and consist of brand, agent relationships, renewal rights, customer relations, trade names, non-competes and insurance licenses. Finite-lived intangibles assets are amortized over their useful lives from one to fifteen years. The tables below detail the finite-lived intangible assets, net as of December 31, 2018 and 2017, respectively (amounts in thousands): December 31, 2018 Weighted -average Amortization (years) Gross Carrying Amount Accumulated Amortization Intangible Assets, net (1) Amortizing intangible assets Brand 8 $ 17,810 $ (3,319 ) $ 14,491 Agent relationships 9 15,500 (2,259 ) 13,241 Renewal rights 14 40,600 (2,932 ) 37,668 Customer relations 7 870 (297 ) 573 Trade names 8 9,000 (1,308 ) 7,692 Value of business acquired 1 25,400 (25,400 ) — Non-compete 1 4,790 (2,920 ) 1,870 Total intangible assets $ 113,970 $ (38,435 ) $ 75,535 (1) Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized. December 31, 2017 Weighted -average Amortization (years) Gross Carrying Amount Accumulated Amortization Intangible Assets, net (1) Amortizing intangible assets Brand 14 $ 1,210 $ (195 ) $ 1,015 Agent relationships 10 15,500 (789 ) 14,711 Renewal rights 15 57,200 (2,162 ) 55,038 Customer relations 8 870 (211 ) 659 Trade names 10 9,000 (408 ) 8,592 Value of business acquired 1 25,400 (9,083 ) 16,317 Non-compete 2 4,790 (811 ) 3,979 Total intangible assets $ 113,970 $ (13,659 ) $ 100,311 (1) Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized. Estimated annual pretax amortization of intangible assets for each of the next five years and thereafter is as follows (in thousands): Year Amount 2019 $ 8,208 2020 $ 6,365 2021 $ 6,351 2022 $ 6,351 2023 $ 6,351 Thereafter $ 41,909 $ 75,535 Amortization expense of intangible assets was $24.8 million and $6.2 million for the years ended December 31, 2018 and 2017, respectively.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Note 5. Earnings (Loss) Per Share The following table sets forth the computation of basic and diluted net income (loss) per share for the periods indicated: For the Year Ended December 31, 2018 2017 2016 Basic earnings (loss) per share: Net income (loss) attributable to common stockholders (000's) $ 27,155 $ (1,119 ) $ 33,865 Weighted average shares outstanding 25,941,253 26,798,465 29,632,171 Basic earnings (loss) per share: $ 1.05 $ (0.04 ) $ 1.14 Diluted earnings (loss) per share: Net income (loss) attributable to common stockholders (000's) $ 27,155 $ (1,119 ) $ 33,865 Weighted average shares outstanding 25,941,253 26,798,465 29,632,171 Weighted average dilutive shares 154,621 — 2,178 Total weighted average dilutive shares 26,095,874 26,798,465 29,634,349 Diluted earnings (loss) per share: $ 1.04 $ (0.04 ) $ 1.14 Due to the net loss for 2017, dilutive loss per share is the same as basic due to the antidilutive impact of the convertible debt and restricted stock under the if-converted method. The Company had 2,563,777, 8,424,598 and 2,049,923 of antidilutive shares for the three years ended December 31, 2018, 2017 and 2016, respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 6. Fair Value Measurements For the Company’s investments in U.S. government securities that do not have prices in active markets, agency securities, state and municipal governments, and corporate bonds, the Company obtains the fair values from its third-party valuation service and we evaluate the relevant inputs, assumptions, methodologies and conclusions associated with such valuations. The valuation service calculates prices for the Company’s investments in the aforementioned security types on a month-end basis by using several matrix-pricing methodologies that incorporate inputs from various sources. The model the valuation service uses to price U.S. government securities and securities of states and municipalities incorporates inputs from active market makers and inter-dealer brokers. To price corporate bonds and agency securities, the valuation service calculates non-call yield spreads on all issuers, uses option-adjusted yield spreads to account for any early redemption features, then adds final spreads to the U.S. Treasury curve as of quarter end. The inputs the valuation service uses in their calculations are not quoted prices in active markets, but are observable inputs, and therefore represent Level 2 inputs. The following table presents information about the Company’s assets measured at fair value on a recurring basis. The Company assesses the levels for the investments at each measurement date, and transfers between levels are recognized on the actual date of the event or change in circumstances that caused the transfer in accordance with the Company’s accounting policy regarding the recognitions of transfers between levels of the fair value hierarchy. For the years ended December 31, 2018 and 2017, there were no transfers in or out of Level 1, 2, and 3. December 31, 2018 Total Level 1 Level 2 Level 3 (in thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 48,041 $ 354 $ 47,687 $ — States, municipalities and political subdivisions 59,289 — 59,289 — Special revenue 245,355 — 245,355 — Industrial and miscellaneous 152,457 — 152,457 — Redeemable preferred stocks 4,507 4,507 — — $ 509,649 $ 4,861 $ 504,788 $ — December 31, 2017 Total Level 1 Level 2 Level 3 (in thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 38,880 $ 359 $ 38,521 $ — States, municipalities and political subdivisions 76,411 — 76,411 — Special revenue 267,677 — 267,677 — Industrial and miscellaneous 162,128 — 162,128 — Redeemable preferred stocks 4,700 — 4,700 — $ 549,796 $ 359 $ 549,437 $ — Non-recurring fair value measurements Assets and liabilities that are measured at fair value on a non-recurring basis include intangible assets and goodwill which are recognized at fair value during the period in which an acquisition is completed, from updated estimates and assumptions during the measurement period, or when they are considered to be impaired. These non-recurring fair value measurements, primarily for intangible assets acquired, were based on Level 3 unobservable inputs. During 2018 and 2017 these non-recurring fair values inputs consisted of brand, agent relationships, renewal rights, customer relations, trade names, value of business acquired, non-compete and goodwill. In the event of an impairment, we determine the fair value of the goodwill and intangible assets using a combination of a discounted cash flow approach and market approaches, which contain significant unobservable inputs and therefore is considered a Level 3 fair value measurement. The unobservable inputs in the analysis generally include future cash flow projections and a discount rate. There were no non-recurring fair value adjustments to intangible assets and goodwill during 2018, 2017 and 2016. The measurement period may be up to one year from the acquisition date. We record any measurement period adjustments to the fair value of assets acquired and liabilities assumed, with the corresponding offset to goodwill.

Other Comprehensive Income

Other Comprehensive Income	12 Months Ended
	Dec. 31, 2018
Comprehensive Income Net Of Tax [Abstract]
Other Comprehensive Income	Note 7. Other Comprehensive Income The following table is a summary of other comprehensive income (loss) and discloses the tax impact of each component of other comprehensive income for the years ended December 31, 2018, 2017 and 2016, respectively: For the Year Ended December 31, 2018 2017 2016 Pre-tax Tax After- tax Pre- tax Tax After- tax Pre-tax Tax After- tax (in thousands) Other comprehensive income Change in unrealized losses on investments, net $ (5,700 ) $ 2,281 $ (3,419 ) $ 5,688 $ (2,713 ) $ 2,975 $ (3,120 ) $ 2,561 $ (559 ) Reclassification adjustment of realized losses (gains) included in net income 163 (49 ) 114 (564 ) (457 ) $ (1,021 ) (1,733 ) (693 ) $ (2,426 ) Effect on other comprehensive income $ (5,537 ) $ 2,232 $ (3,305 ) $ 5,124 $ (3,170 ) $ 1,954 $ (4,853 ) $ 1,868 $ (2,985 )

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Property and Equipment	Note 8 . Property and Equipment Property and equipment, net consists of the following at December 31, 2018 and 2017 (in thousands): December 31, 2018 December 31, 2017 (In thousands) Land $ 2,582 $ 2,582 Building 11,390 12,148 Computer hardware and software 4,901 4,093 Office furniture and equipment 1,397 759 Tenant and leasehold improvements 4,477 3,660 Vehicle fleet 854 815 Total, at cost 25,601 24,057 Less: accumulated depreciation and amortization (7,603 ) (5,309 ) Property and equipment, net $ 17,998 $ 18,748 Depreciation expense for the years ended December 31, 2018, 2017 and 2016 was $2.3 million, $1.6 million, $1.6 million, respectively. The Company’s real estate consists of 15 acres of land, five buildings with a gross area of 229,000 square feet and a parking garage. Expected annual rental income due under non-cancellable operating leases for our real estate properties is as follows (in thousands): Year Amount January 1 to December 31, 2019 $ 2,698 January 1 to December 31, 2020 2,758 January 1 to December 31, 2021 2,818 January 1 to December 31, 2022 2,874 January 1 to December 31, 2023 1,902 Thereafter 506 $ 13,556

Deferred Policy Acquisition Cos

Deferred Policy Acquisition Costs	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Deferred Policy Acquisition Costs	Note 9 . Deferred Policy Acquisition Costs The Company defers certain income in connection with its quota share treaties, the ceded reinsurance commissions income, called deferred reinsurance ceding commissions (“DRCC”), which are deferred and earned over the terms of the reinsurance agreements. Ceding commission on quota share agreements call for provisional ceding rate, subject sliding scale adjustments based on the loss experience of the reinsurers. Adjustments are reflected in current operations. The Company allocates 75% of total ceding commission income to policy acquisition costs and 25% of total ceding commission income to general and administrative expense. For the Year Ended December 2018 2017 (In thousands) Beginning balance of deferred ceding commission income $ 51,109 $ 57,808 Ceding commission deferred 68,044 1,901 Less: ceding commission earned (74,157 ) (8,600 ) Ending balance of deferred ceding commission income $ 44,996 $ 51,109 For the year ended December 31, 2018 and 2017, the Company allocated ceding commission income of $55.0 million and $8.6 million to policy acquisition costs and $18.1 million and $0 to general and administrative expense, respectively. The Company defers certain costs in connection with written policies, called deferred policy acquisition costs (“DPAC”), which are amortized over the effective period of the related insurance policies The Company anticipates that its DPAC costs will be fully recoverable in the near term. The table below depicts the activity with regard to DPAC for the years ended December 31, 2018 and 2017: For the Year Ended December 2018 2017 (In thousands) Beginning Balance $ 41,678 $ 42,779 Policy acquisition costs deferred 171,007 82,791 Amortization (139,630 ) (83,892 ) Ending Balance $ 73,055 $ 41,678

Reinsurance

Reinsurance	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Reinsurance	Note 10 . Reinsurance The Company’s reinsurance program is designed, utilizing the Company’s risk management methodology, to address its exposure to catastrophes or large non-catastrophic losses. The Company’s program provides reinsurance protection for catastrophes including hurricanes, tropical storms, tornadoes and winter storms. The Company’s reinsurance agreements are part of its catastrophe management strategy, which is intended to provide its stockholders an acceptable return on the risks assumed in its property business, and to reduce variability of earnings, while providing protection to the Company’s policyholders. 2018 – 2019 Reinsurance Program In order to limit our potential exposure to catastrophic events, we purchase significant reinsurance from third party reinsurers and sponsor catastrophe bonds issued by Citrus Re. The catastrophe reinsurance may be on an excess of loss or quota share basis. We also purchase reinsurance for non-catastrophe losses on a quota share, per risk or facultative basis. Purchasing a sufficient amount of reinsurance to consider catastrophic losses from single or multiple events or significant non-catastrophe losses is an important part of our risk strategy, and premiums paid (or ceded) to reinsurers is one of our largest cost components. Reinsurance involves transferring, or “ceding”, a portion of the risk exposure on policies we write to another insurer, known as a reinsurer. To the extent that our reinsurers are unable to meet the obligations they assume under our reinsurance agreements, we remain liable for the entire insured loss. Our reinsurance agreements are prospective contracts. We record an asset, prepaid reinsurance premiums, and a liability, reinsurance payable, for the entire contract amount upon commencement of our new reinsurance agreements. We generally amortize our catastrophe reinsurance premiums over the 12-month contract period on a straight-line basis, which is June 1 through May 31. Our quota share reinsurance is amortized over the 12-month contract period and may be purchased on a calendar or fiscal year basis. In the event that we incur losses and loss adjustment expenses recoverable under our reinsurance program, we record amounts recoverable from our reinsurers on paid losses plus an estimate of amounts recoverable on unpaid losses. The estimate of amounts recoverable on unpaid losses is a function of our liability for unpaid losses associated with the reinsured policies; therefore, the amount changes in conjunction with any changes to our estimate of unpaid losses. As a result, a reasonable possibility exists that an estimated recovery may change significantly in the near term from the amounts included in our consolidated financial statements. Our insurance regulators require all insurance companies, like us, to have a certain amount of capital and reinsurance coverage in order to cover losses and loss adjustment expenses upon the occurrence of a catastrophic event. Our 2018-2019 reinsurance program provides reinsurance in excess of our state regulator requirements, which are based on the probable maximum loss that we would incur from an individual catastrophic event estimated to occur once in every 100 years based on our portfolio of insured risks. The nature, severity and location of the event giving rise to such a probable maximum loss differs for each insurer depending on the insurer’s portfolio of insured risks, including, among other things, the geographic concentration of insured value within such portfolio. As a result, a particular catastrophic event could be a one-in-100-year loss event for one insurance company while having a greater or lesser probability of occurrence for another insurance company. We also purchase reinsurance coverage to protect against the potential for multiple catastrophic events occurring in the same year. We share portions of our reinsurance program coverage among our insurance company affiliates. Catastrophe Excess of Loss Reinsurance Effective June 1, 2018, we entered into catastrophe excess of loss reinsurance agreements covering Heritage P&C, Zephyr and NBIC. The catastrophe reinsurance programs are allocated amongst traditional reinsurers, catastrophe bonds issued by Citrus Re Ltd., a Bermuda special purpose insurer formed in 2014 (“Citrus Re”) and the Florida Hurricane Catastrophe Fund (“FHCF”). The FHCF covers Florida risks only and we participate at 45%. Citrus Re, which provides fully collateralized multi-year coverage, covers catastrophe losses incurred by Heritage P&C only through the 2016 Class D and 2017-1 Notes, and covers catastrophe losses incurred by Heritage P&C, Zephyr and NBIC through the 2016 Class E Note. Our third-party reinsurers are either rated “A- “or higher by A.M. Best or S&P or are fully collateralized, to reduce credit risk. The reinsurance program, which is segmented into layers of coverage, protects the Company for excess property catastrophe losses and loss adjustment expenses. The 2018-2019 reinsurance program provides first event coverage up to $1.6 billion for Heritage P&C, first event coverage up to $801 million for Zephyr, and first event coverage up to $1.0 billion for NBIC. Our first event retention for each insurance company subsidiary follows: Heritage P&C - $20.0 million; Zephyr - $20.0 million; NBIC – $12.8 million. Our second and third event retentions for each insurance company subsidiary follows: Heritage P&C - $16.0 million; Zephyr - $16 million; NBIC – $8.8 million. Our program was placed on a cascading basis which provides greater horizontal protection in a multiple small events scenario and features additional coverage enhancements. This coverage exceeds the requirements established by the Companies’ rating agency, Demotech, Inc., the Florida Office of Insurance Regulation, the Hawaii Insurance Division, and the Rhode Island Department of Business Regulation. For the twelve months ending May 31, 2019, no single uncollateralized private reinsurer represented more than 10% of the overall limit purchased from our total reinsurance coverage. We are responsible for all losses and loss adjustment expenses in excess of our reinsurance program. For second or subsequent catastrophic events, our total available coverage depends on the magnitude of the first event, as we may have coverage remaining from layers that were not previously fully exhausted. An aggregate of $3.4 billion of limit purchased in 2018 includes reinstatement through the purchase of reinsurance reinstatement premium. In total, we have purchased $3.5 billion of potential reinsurance coverage, including our retention, for multiple catastrophic events. Our ability to access this coverage, however, will be subject to the severity and frequency of such events. The Company's estimated net cost for the 2018-2019 catastrophe reinsurance programs is approximately $252.0 million. Gross Quota Share Reinsurance NBIC purchased an 8% gross quota share reinsurance treaty effective June 1, 2018 which provides ground up loss recoveries of up to $1.0 billion. Prior to this treaty, NBIC’s gross quota share treaty was 18.75%. Net Quota Share Reinsurance NBIC’s Net Quota Share coverage is proportional reinsurance for which certain of our other reinsurance inures to the quota share (property catastrophe excess of loss and reinstatement premium protection and the second layer of the general excess of loss.) An occurrence limit of $20.0 million for catastrophe losses is in effect on the quota share, subject to certain aggregate loss limits that vary by reinsurer. The amount and rate of reinsurance commissions slide, within a prescribed minimum and maximum, depending on loss performance. NBIC ceded 49.5% of net premiums and losses during 2018 to the Net Quota Share and 8% of the 2017 Net Quota Share was runoff. The Net Quota Share program was renewed on December 31, 2018 ceding 52.0% of the net premiums and losses and 10% of the prior year quota share will runoff. Aggregate Coverage Heritage P&C and Zephyr $1.1 billion of limit is structured on an aggregate basis (Top and Aggregate, Layer 1, Layer 2, Layer 3, Layer 4, Stub layers, Multi-Zonal, 2017-1 Notes and 2016 Class E Notes). To the extent that this coverage is not fully exhausted in the first catastrophic event, it provides coverage commencing at its reduced retention for second and subsequent events where underlying coverage has been previously exhausted. The Company paid a reinsurance reinstatement premium for $669.0 million of this coverage, which can be reinstated one time. Layers (with exception to FHCF and 2016 Class D Notes) are “net” of a $40.0 million attachment point. Layers inure to the subsequent layers if the aggregate limit of the preceding layer(s) is exhausted, and the subsequent layer cascades down in its place. NBIC placed 42.50% of an aggregate contract, which covers all catastrophe losses excluding named storms, on May 31, 2018, expiring December 31, 2018. The limit on the contract is $20.0 million, retention of $3.0 million and franchise deductible of $1.5 million. NBIC placed 92.00% of an occurrence contract, which covers all catastrophe losses excluding named storms, on May 31, 2018, expiring December 31, 2018. The limit on the contract is $20.0 million with a retention of $20.0 million. NBIC placed 40.00% of an aggregate contract, which covers all catastrophe losses excluding named storms, on December 31, 2018, expiring May 31, 2019. The limit on the contract is $20.0 million, retention of $20.0 million and franchise deductible of $1.0 million. NBIC placed 100.00% of an occurrence contract, which covers all catastrophe losses excluding named storms, on December 31, 2018, expiring December 31, 2019. The limit on the contract is $20.0 million with a retention of $20.0 million and has 1 reinstatement available. Per Risk Coverage The Company also purchased property per risk coverage for losses and loss adjustment expenses in excess of $1.0 million per claim. The limit recovered for an individual loss is $9.0 million and total limit for all losses is $27.0 million. There are two reinstatements available with additional premium due based on the amount of the layer exhausted. In addition, the Company purchased facultative reinsurance in excess of $10.0 million for any commercial properties it insured where the total insured value exceeded $10.0 million. General Excess of Loss NBIC’s general excess of loss reinsurance protects NBIC from single risk losses, both property and casualty. The casualty coverage provided by this contract also responds on a “Clash” basis, meaning that multiple policies involved in a single loss occurrence can be aggregated into one loss and applied to the reinsurance contract. The coverage is in two layers in excess of NBIC’s retention of the first $300,000 of loss. The first layer is $450,000 excess $300,000 and the second layer is $2.75 million excess $750,000 (Casualty second layer is $1.25 million excess $750,000). Both layers are 92% placed with the gross quota share providing the additional 8% coverage. Semi-Automatic Facultative Excess of Loss NBIC’s automatic property facultative reinsurance protects NBIC from single risk losses, for property risks with a total insured value excess of $3.5 million subject to a limit of $3.75 million. 2017 – 2018 Reinsurance Program Heritage P&C and Zephyr Program The Company placed its reinsurance program for the period from June 1, 2017 through May 31, 2018 during the second quarter of 2017. This reinsurance program incorporates the catastrophe risk of our two insurance subsidiaries, Heritage P&C, a Florida based insurer writing property insurance in multiple states, and Zephyr, a Hawaii based insurer. The programs are allocated amongst traditional reinsurers, catastrophe bonds issued by Citrus Re Ltd., a Bermuda special purpose insurer formed in 2014 (“Citrus Re”), and the Florida Hurricane Catastrophe Fund (“FHCF”). Coverage is specific to each insurer unless otherwise noted. The 2017-2018 reinsurance program provides, including retention, first event coverage up to $1.75 billion in Florida, first event coverage up to $731 million in Hawaii, and multiple event coverage up to $2.6 billion. This coverage exceeds the requirements established by the Company’s rating agency, Demotech, Inc., the Florida Office of Insurance Regulation, and the Hawaii Insurance Division. For the twelve months ending May 31, 2018, no single uncollateralized private reinsurer represented more than 10% of the overall limit purchased from our total reinsurance coverage. The reinsurance program, which is segmented into layers of coverage, protects the Company for excess property catastrophe losses and loss adjustment expenses. The Company’s 2017-2018 reinsurance program incorporates the mandatory coverage required by law to be placed with FHCF, which is available only for Florida catastrophe risk. For the 2017 hurricane season, the Company maintained the prior year selected participation percentage in the FHCF at 45%. The Company also purchased private reinsurance below and alongside the FHCF layer, as well as aggregate reinsurance coverage. The Company is not utilizing its captive, Osprey, for any catastrophe risk for the 2017 hurricane season. The Company has a primary retention of the first $20 million of losses and loss adjustment expenses. Additionally, the December 1, 2016 treaty between Heritage P&C and Osprey was commuted effective June 1, 2017. Heritage P&C provides property insurance coverage for states other than Hawaii. The following describes the various layers of its June 1, 2017 to May 31, 2018 reinsurance program: • Heritage P&C’s Retention st st • Shared Layers . Immediately above the retention, the Company has purchased $372 million of reinsurance from third party reinsurers . This coverage includes the following layers: Top and Aggregate layer, Underlying layer, Layer 1, Layer 2 and a private sliver alongside those layers. Through the payment of a reinstatement premium, Heritage P&C and Zephyr are able to reinstate $352 million of this reinsurance one time. There is $20 million of shared coverage subject to a seasonal aggregate of $68 million. • FHCF Layer • Layers alongside the FHCF. • 2017-2 Notes: • 2016 Class D and E Notes: • 2015 Class B and C Notes : During April 2015, Heritage P&C entered into catastrophe reinsurance agreements with Citrus Re. Layers above the FHCF - Florida program • 2017-1 Notes: • 2015 Class A Notes: • Multi-Zonal Layers. • Aggregate Coverage Zephyr provides property insurance coverage for Hawaii. The various layers of its 2017-2018 reinsurance program area as follows: • Zephyr’s Retention • Shared Layers above retention • Multi-Zonal Layers. • Top Hawaii only layer. • Aggregate Coverage For a first catastrophic event striking Florida, our reinsurance program provides coverage up to $1.75 billion of losses and loss adjustment expenses, including our retention, and we are responsible for all losses and loss adjustment expenses in excess of such amount. For a first catastrophic event striking Hawaii, our reinsurance program provides coverage up to $731 million of losses and loss adjustment expenses, including our retention, and we are responsible for all losses and loss adjustment expenses in excess of such amount. For subsequent catastrophic events, our total available coverage depends on the magnitude of the first event, as we may have coverage remaining from layers that were not previously fully exhausted. An aggregate of $632 million of limit purchased in 2017 includes reinstatement through the purchase of reinsurance reinstated premium. In total, we have purchased $2.6 billion of potential reinsurance coverage, including our retention, for multiple catastrophic events. Our ability to access this coverage, however, will be subject to the severity and frequency of such events. Hurricane losses in states other than Hawaii would be covered under the Heritage P&C program with the exception of the FHCF coverage and the series 2015, 2016 and 2017 catastrophe bonds. Management deemed this reinsurance protection to be sufficient given the level of catastrophe exposure in 2017 for Alabama, Georgia, North Carolina and South Carolina. In placing our 2017-2018 reinsurance program, we sought to capitalize on favorable reinsurance pricing and mitigate uncertainty surrounding the future cost of our reinsurance by negotiating multi-year arrangements. The $687.5 million of aggregate coverage we have purchased from Citrus Re Ltd, which includes the 2015 Class A, B, and C notes, the 2016 Class D & E notes, and the 2017 Series notes extends $277.5 million of coverage until May 2018, $250 million of coverage for two-year period and $160 million of coverage for a three-year period. To the extent coverage is all or partially exhausted before the end of three years, it cannot be reinstated. In the aggregate, multi-year coverage from Citrus Re Ltd accounts for approximately 26% of our purchases of private reinsurance for the 2017 hurricane season. The terms of each of the multi-year coverage arrangements described above are subject to adjustment depending on, among other things, the size and composition of our portfolio of insured risks in future periods. Per Risk Coverage: The Company also purchased property per risk coverage for losses and loss adjustment expenses in excess of $1 million per claim. The limit recovered for an individual loss is $9 million and total limit for all losses is $27 million. There are two reinstatements available with additional premium due based on the amount of the layer exhausted. In addition, the Company purchased facultative reinsurance in excess of $10 million for any commercial properties it insured where the total insured value exceeded $10 million. NBIC Program NBIC, our insurance subsidiary located in Rhode Island, provides property insurance coverage in the states of Connecticut, Massachusetts, New Jersey, New York and Rhode Island. NBIC’s catastrophe reinsurance program provides coverage for loss occurrences up to $1 billion (1:100-year event) on the first event and includes automatic reinstatement protection. The program includes coverage for catastrophic events such as severe winter storms, hurricanes and tornadoes. During 2017, NBIC’s net retention for a catastrophic event of up to $1.0 billion is $1.3 million. NBIC’s reinsurance program also covers non-catastrophic losses. A summary of NBIC’s combined reinsurance protection follows. The reinsurance program is placed with strong participation from leading reinsurers across global markets with no one reinsurer exceeding 10%. The reinsurance partners are all rated A- to A+ by Standard and Poor’s. Property Catastrophe Excess of Loss NBIC’s property catastrophe program protects NBIC from the aggregation of losses in a single occurrence. Reinstatement provisions (one reinstatement at 100% of premium) on the first three layers and a portion of the fourth layer provides protection for NBIC from a second catastrophic event. The program is 81.25% placed, with the remaining 18.75% of catastrophe protection coming from NBIC’s gross quota share contract. NBIC’s net retention of $20 million is further reduced with a net quota share reinsurance contract described below. Reinstatement Premium Protection NBIC’s Reinstatement Premium Protection locks in the cost of a potential reinstatement premium charge that would occur should an event trigger catastrophe reinsurance. NBIC buys reinstatement premium protection for the first three layers and a portion of the fourth catastrophe excess of loss layers. Aggregate Contract For the year ended December 31, 2017, NBIC had 25% of an Aggregate contract, in two sections: • Section 1: $20 million excess $21.5 million in the aggregate for all catastrophe losses excluding named tropical storms. • Section 2: $12 million excess $8 million for named tropical storm losses. NBIC placed 25% of an aggregate contract on December 31, 2017, expiring May 31, 2018. The limit on the contract is $13.5 million, retention of $18.5 million and franchise deductible of $1.0 million. Gross Quota Share NBIC purchased an 18.75% gross account quota share reinsurance treaty which provides ground up loss recoveries of up to $1 billion. Net Lines Quota Share NBIC’s net lines quota share is proportional reinsurance for which certain of our other reinsurance inures to the quota share (property catastrophe excess of loss and reinstatement premium protection and the second layer of the general excess of loss.) An occurrence limit of $20 million for catastrophe losses is in effect on the quota share, subject to certain aggregate loss limits that vary by reinsurer. The amount and rate of reinsurance commissions slide, within a prescribed minimum and maximum, depending on loss performance. NBIC ceded 60% of net premiums and losses during 2017 to the Net Quota Share. The net quota share program was renewed on December 31, 2017 ceding 49.5% of the net premiums and losses and 8% of the prior year quota share will runoff. General Excess of Loss NBIC’s general excess of loss reinsurance protects NBIC from single risk losses, both property and casualty. The casualty coverage provided by this contract also responds on a “Clash” basis, meaning that multiple policies involved in a single loss occurrence can be aggregated into one loss and applied to the reinsurance contract. The coverage is in two layers in excess of NBIC’s retention of the first $300,000 of loss. The first layer is $450,000 excess $300,000 and the second layer is $2.75 million excess $750,000 (Casualty second layer is $1.25 million excess $750,000). Both layers are 81.25% placed with the gross quota share providing the additional 18.75% coverage. Semi-Automatic Facultative Excess of Loss NBIC’s automatic property facultative reinsurance protects NBIC from single risk losses, for property risks with a total insured value excess of $3.5 million subject to a limit of $2.5 million. Product specific reinsurance for Umbrella and Home Systems Protection NBIC’s umbrella facultative program protects NBIC’s Umbrella Liability business through the quota share reinsurance contract. NBIC has limits of liability of up to $1 million with 90% quota share, subject to an additional limit of liability of up to $4 million with 100% quota share. The home system protection (HSP) product is designed to protect customers from sudden and accidental mechanical breakdowns to furnaces, boilers, HVAC systems, home entertainment systems, pool heating and filtering equipment, and other mechanical systems that are not covered by standard homeowners’ insurance policies. The coverage is included in NBIC’s base policy and is 100% reinsured through Hartford Steam Boiler. Property Per Risk Coverage The Company also purchased property per risk coverage for losses and loss adjustment expenses in excess of $1 million per claim. The limit recovered for an individual loss is $9 million and total limit for all losses is $27 million. There are two reinstatements available with additional premium due based on the amount of the layer exhausted. In addition, the Company purchased facultative reinsurance in excess of $10 million for any commercial properties it insured that the total insured value exceeded $10 million. The Company’s reinsurance arrangements had the following effect on certain items in the Consolidated Statement of Income for the year ended December 31, 2018: For the Year Ended December 31, 2018 Premiums Written Premiums Earned Losses and Loss Adjustment Expenses (in thousands) Direct $ 923,349 $ 926,326 $ 855,780 Ceded (477,451 ) (472,144 ) (618,355 ) Net $ 445,898 $ 454,182 $ 237,425

Reserve For Unpaid Losses

Reserve For Unpaid Losses	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Reserve for Unpaid Losses	Note 1 1 . Reserve For Unpaid Losses The Company determines the reserve for unpaid losses on an individual-case basis for all incidents reported. The liability also includes amounts which are commonly referred to as incurred but not reported, or “IBNR”, claims as of the balance sheet date. We estimate our IBNR reserves by projecting our ultimate losses using industry accepted actuarial methods and then deducting actual loss payments and case reserves from the projected ultimate losses. The table below summarizes the activity related to the Company’s reserve for unpaid losses: For the Year Ended December 31, 2018 2017 2016 Balance, beginning of period $ 470,083 $ 140,137 $ 83,722 Less: reinsurance recoverable on unpaid losses 315,353 589 — Net balance, beginning of period 154,730 139,548 83,722 Incurred related to: Current year 224,080 188,914 220,071 Prior years 13,345 12,567 18,791 Total incurred 237,425 201,481 238,862 Paid related to: Current year 104,368 114,344 120,626 Prior years 105,935 107,479 62,407 Total paid 210,303 221,823 183,033 Total unpaid claims assumed from acquisitions — 35,524 — Net balance, end of period 181,852 154,730 139,551 Plus: reinsurance recoverable on unpaid losses 250,507 315,353 586 Balance, end of period $ 432,359 $ 470,083 $ 140,137 The Company writes insurance in the coastal states of Alabama, Connecticut, Florida, Georgia, Hawaii, Massachusetts, New Jersey, New York, North Carolina, Rhode Island and South Carolina, which could be exposed to hurricanes or other natural catastrophes. Although the occurrence of a major catastrophe could have a significant effect on our monthly or quarterly results, such an event is unlikely to be so material as to disrupt our overall normal operations. However, the Company is unable to predict the frequency or severity of any such events that may occur in the near term or thereafter. The Company believes that the reserve for unpaid losses reasonably represents the amount necessary to pay all claims and related expenses which may arise from incidents that have occurred as of the balance sheet date. The reserve for unpaid losses is the estimate of amounts necessary to settle all reported and unreported incurred claims for the ultimate cost of insured losses, based upon the facts of each case and the Company’s experience with similar cases. Estimated amounts of salvage and subrogation are deducted from the reserve for claims and claims expense. The establishment of appropriate reserves, including reserves for catastrophe losses, is an inherently uncertain and complex process. Reserve estimates are primarily derived using an actuarial estimation process in which historical loss patterns are applied to actual paid losses and reported losses (paid losses plus individual case reserves established by claim adjusters) for an accident or report year to create an estimate of how losses are likely to develop over time. Development factors are calculated quarterly and periodically throughout the year for data elements such as claims reported and settled, paid losses, and paid losses combined with case reserves. The historical development patterns for these data elements are used as the assumptions to calculate reserve estimates, including the reserves for reported and unreported claims. Reserve estimates are regularly reviewed and updated, using the most current information available. Any resulting re-estimates are reflected in current results of operations. The Company’s losses incurred for the years ended December 31, 2018 and 2017 reflect prior year development of $13.3 million and $12.6 million, respectively, associated with management’s best estimate of the actuarial loss and LAE reserves with consideration given to Company specific historical loss experience. While a portion of the 2018 development includes additional retention for hurricane losses, the majority of the 2018 loss development related to personal lines litigated and AOB claims from 2016 and 2017 accident years. Development in 2017 included $6.5 million for hurricane claims and strengthening of reserves for personal lines non-hurricane losses. Most of the unfavorable emergence recorded in 2016 came from the second, third and fourth quarters of 2015, primarily related to claims involving litigation and claims that were represented by attorneys and AOB. Management strengthened reserves for the 2018 accident year. The following is information about incurred and paid claims development as of December 31, 2018, net of reinsurance, as well as cumulative claim frequency and the total of incurred-but-not-reported liabilities plus expected development on reported claims included within the net incurred claims amounts. Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance (in thousands, except number of claims) Unaudited Accident year 2012 & prior 2013 2014 2015 2016 2017 2018 Net IBNR Reserves Reported Claims 2012 & prior $ 102,723 $ 105,765 $ 107,842 $ 106,493 $ 106,331 $ 106,654 $ 106,446 $ 56 53,348 2013 61,157 61,483 62,969 62,166 62,354 62,378 488 13,085 2014 118,991 114,899 113,847 114,984 115,838 1,731 18,430 2015 179,255 197,744 203,792 205,164 5,941 25,952 2016 237,207 242,611 250,990 10,844 27,245 2017 189,163 195,240 18,243 66,739 2018 199,565 88,792 28,939 Total Total $ 1,135,621 $ 126,095 Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance Unaudited Accident year 2012 & prior 2013 2014 2015 2016 2017 2018 2012 & prior $ 92,909 $ 101,323 $ 102,750 $ 104,093 $ 104,362 $ 105,053 $ 105,875 2013 35,771 50,716 55,589 57,647 59,395 60,581 2014 68,732 95,076 101,456 108,509 112,518 2015 103,918 162,654 181,672 192,967 2016 132,679 211,512 233,540 2017 103,148 169,743 2018 84,552 Total $ 959,776 Reconciliation of Reserve Balances to Liability for Unpaid Loss and Loss Adjustment Expenses Unpaid Loss and Allocated Loss Adjustment Expense, Net of Reinsurance $ 175,845 Ceded Unpaid Loss and Allocated Loss Adjustment Expense 250,507 Unpaid Unallocated Loss Adjustment Expense 6,007 Unpaid losses and loss adjustment expenses $ 432,359 Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance as of December 31, 2018 (Unaudited) Year - 1 Year - 2 Year - 3 Year - 4 Year - 5 Thereafter Percentage 57% 29% 5% 3% 3% 3%

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Note 1 2 . Long-Term Debt Senior Secured Notes In December 15, 2016, the Company issued $79.5 million of Senior Secured Notes (“Secured Notes”) bearing interest at the three-month LIBOR plus 8.75% per annum. Interest is accrued monthly and paid quarterly. During the year ended December 31, 2018 and 2017, the Company made interest payments of approximately $8.8 million and $8 million, respectively. On December 14, 2018, the Company prepaid the Secured Notes in aggregate of $84.1 million in principal and unpaid accrued interest. The Company recorded in aggregate $7.2 million in other non-operating losses for a prepayment penalty and the net loss from the prepayment of the note. Convertible Senior Notes In August 2017 and September 2017, the Company issued in aggregate $136.8 million of 5.875% Convertible Senior Notes (“Convertible Notes”) maturing on August 1, 2037, unless earlier repurchased, redeemed or converted. The Convertible Notes were issued in a private placement transaction pursuant to Rule 144A under the Securities Act, as amended. The Convertible Notes are senior unsecured obligations of the Company that will rank senior in right of payment to the Company’s future indebtedness that is expressly subordinated in right of payment to the Convertible Notes; equal in right of payment to the Company’s unsecured indebtedness that is not so subordinated; effectively junior to any of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to all indebtedness or other liabilities by the Company’s subsidiaries other than the Guarantor, which will fully and unconditionally guarantee the Convertible Notes on a senior unsecured basis. Holders may convert their Convertible Notes at any time prior to the close of business on the business day immediately preceding February 1, 2037. On or after August 5, 2022 but prior to February 1, 2037, the Company may redeem for cash all or any portion of the Convertible Notes, at the Company’s option, at a redemption price equal to 100% of the principal amount of the Convertible Notes to be redeemed, plus accrued and unpaid interest to , but excluding, the redemption date. Holders of the Convertible Notes will be able to cause the Company to repurchase their Convertible Notes for cash on any of August 1, 2022, August 1, 2027 and August 1, 2032, in each case at 100% of their principal amount, plus accrued unpaid interest to, but excluding, the relevant repurchase date. Interest accrues from August 16, 2017 and is payable semi-annually in arrears, on February 1 and August 1 of each year, beginning in 2018. For the year ended December 31, 2017 the Company made no principal or interest payments. As of December 31, 2018, the Company has $25.6 million of the Convertible Notes outstanding, net of debt issuance and debt discount costs which totaled approximately, $3.6 million. For the year ended December 31, 2018, the Company made interest payments of approximately $8.1 million on the Convertible Notes. In the fourth quarter, the Company exchanged Convertible Notes in the aggregate principal amount of $75.8 million for a combination of cash and the issuance of an aggregate of 3,595,452 shares of the Company’s common stock. Debt Extinguishment The Company has reacquired convertible senior notes over a series of transactions in 2017 and 2018. In accordance with ASC 470 “ Debt On December 1, 2017, the Company held a Special Meeting of Stockholders, at which the Company’s stockholders approved, as required by Rule 312 of the New York Stock Exchange Listed Company Manual, the issuance of the Company’s common stock upon conversion of the Convertible Notes. Pursuant to the approval, the Company has the ability to settle the conversion option in shares of common stock, cash or a combination thereof. Upon conversion of the Convertible Notes, the Company intends to pay cash in respect of only the principal amount of the Convertible Notes being converted or (if lower) the conversion value thereof, and to settle any amounts in excess thereof in cash, shares of common stock or a combination thereof, at the Company’s election. In December 2017, the conversion option of the Convertible Notes for equity classification no longer accounted for a separate derivative instruments liability in accordance with U.S. GAAP. The Company valued the embedded derivative and recorded additional paid-in-capital of $51.6 million. In connection with the change in the fair value, the Company recognized a fair value change in the year ended December 31, 2017 of $41.0 million as non-operating expenses in the statement of operations. For 2018 debt repurchases, the Company removed the respective net debt amount and the related portion of the derivative that was included in shareholders’ equity. The extinguishment of debt was measured at the then-current fair value at the time of purchase, with any difference recorded as a gain or loss on the extinguishment. In accordance with the purchase agreement governing the Company’s offer and sale of convertible debt, the Company or its affiliates are prohibited from reselling the notes once acquired. The repurchased Convertible Notes hold no registration rights. In April 2018, the Company reacquired $10.6 million of its outstanding Convertible Notes in the open market at a cost of $13.4 million. The Company recognized a non-operating loss of $383,000 on extinguishment. In August 2018, in connection with the April 2018 settlement of the open market repurchase, the Company retired the repurchased $10.6 million Convertible Notes. In October 2018, the Company reacquired $3.1 million of its outstanding Convertible Notes in the open market at a cost of $3.6 million. The repurchase resulted in a $73,000 non-operating loss. In December 2018, the Company repurchased in aggregate $72.7 million of its outstanding Convertible Notes. As consideration for the repurchase, the Company paid in cash $35.9 million and converted $53.0 million into 3,595,452 shares of the Company’s common stock. The Company recorded a $572,000 non-operating loss on the extinguishment and a reduction in debt discount liability of $6.2 million. In January 2019, in connection with the October 2018 settlement, the Company retired the repurchased $3.1 million Convertible Notes. In November 2017, the Company, through our subsidiary Heritage P&C, reacquired $21.1 million of its outstanding Convertible Notes in the open market at a cost of $25.2 million. The Company recognized a non-operating loss of $1.2 million on extinguishment. In connection with the repurchase, the Company removed the net debt of $17.7 million and liability derivative at the carrying amount of $6.2 million The impact of the purchase of convertible notes during 2018 resulted in a net increase to additional paid-in capital from issuance of common stock on conversion of the Convertible Notes valued at $53.0 million reduced by the impact from the extinguishment of the allocated portion of the convertible option of $26.0 million. On February 19, 2019, the Company reacquired $5.8 million of its outstanding Convertible Notes, payment was made in cash of approximately $2.9 million and issuance of 285,201 shares of the Company’s common stock valued at $4.2 million. Mortgage Loan In October 2017, the Company and its subsidiary, Skye Lane Properties LLC, jointly obtained a commercial real estate mortgage loan in the amount of $12.7 million, bearing interest of 4.95% per annum. On October 30, 2022, the interest rat shall adjust to an interest rate equal to the annualized interest rate of the United States 5-year Treasury Notes as reported by Federal Reserve on a weekly average basis plus 3.10%. The term of the loan expires on October 30, 2027. The Company makes monthly principal and interest payments against the loan. For the years ended December 31, 2018 and 2017, the Company paid in principal and interest of $893,000 and $97,000, respectively. Senior Secured Credit Facility On December 14, 2018, the Company entered into a five-year, $125.0 million credit agreement (the “Credit Agreement”) with a syndicate of lenders consisting of a $75 million senior secured term loan facility (the “Term Loan Facility”) and a $50.0 million senior secured revolving credit facility (the “Revolving Credit Facility” and together with the Term Loan Facility, the “Credit Facilities”). The Company incurred $3.2 million in debt issuance costs in connection to the Credit Facilities. The net proceeds from the Credit Facilities were used in part (1) to redeem all $79.5 million outstanding aggregate principal amount of the Company’s Senior Notes due 2023 bearing interest at a rate equal to 8.75% per annum plus the three-month average LIBOR, (2) to purchase certain of its outstanding 5.875% Convertible Notes due 2037, and (3) for general corporate purposes. At the Company’s option, borrowings under the Credit Facilities will bear interest at rates equal to either (1) a rate determined by reference to LIBOR (based on one, two, three or six-month interest periods), adjusted for applicable reserve requirements, plus an applicable margin (equal to 3.25% as of the closing date) or (2) a base rate determined by reference to the greatest of (a) the “prime rate” of the Administrative Agent, (b) the federal funds rate plus 0.50%, and (c) the LIBOR index rate applicable for an interest period of one month plus 1.00%, plus an applicable margin (equal to 2.25% as of the closing date). The applicable margin for loans under the Credit Facilities varies from 3.25% per annum to 3.75% per annum (for LIBOR loans) and 2.25% to 2.75% per annum (for base rate loans) based on the Company’s leverage ratio. Interest payments with respect to the Credit Facilities are required either on a quarterly basis (for base rate loans) or at the end of each interest period (for LIBOR loans) or, if the duration of the applicable interest period exceeds three months, then every three months. In addition to paying interest on outstanding borrowings under the Revolving Credit Facility, the Company is required to pay a quarterly commitment fee based on the unused portion of the Revolving Credit Facility, which is determined by the Company’s leverage ratio. The Credit Agreement contains certain covenants, representations and warranties, and events of default customary for facilities of this type through which the Company and certain of its subsidiaries are required, among other things, to maintain a minimum net worth, a maximum leverage ratio, a minimum fixed charge coverage ratio and minimum statutory capitalization risk-based capital ratios. As of December 31, 2018, the Company was in compliance with the Credit Agreement’s covenants. Term Loan Facility: The principal amount of the Term Loan Facility amortizes in quarterly installments, beginning with the close of the fiscal quarter ending March 31, 2019, in an amount equal to $1.9 million per quarter, with the remaining balance payable at maturity. As of December 31, 2018, there was $75.0 million in aggregate principal outstanding on the Term Loan Facility. Revolving Credit Facility : The Revolving Credit Facility allows for borrowings of up to $50.0 million inclusive of a $5.0 million sublimit for the issuance of letters of credit and a $10.0 million sublimit for swingline loans. As of December 31, 2018, the Company had $20.0 million of borrowings and no letters of credit outstanding under the Revolving Credit Facility. FHLB Loan Agreements In November 2018, a subsidiary of the Company pledged U.S. government and agency fixed maturity securities with an estimated fair value of $31.0 million as collateral and received $19.2 million in a cash loan under an advance agreement with the Federal Home Loan Bank (“FHLB”) Atlanta. The loan originated on December 12, 2018 and bears a fixed interest rate of 3.094% with interest payments due quarterly commencing March 2019. The principal balance on the loan has a maturity date of December 13, 2023. In connection with the agreement, the subsidiary became a member of FHLB. Membership in the FHLB required an investment in FHLB’s common stock which was purchased on December 31, 2018 and valued at $1.4 million. The subsidiary is permitted to withdraw any portion of the pledged collateral over the minimum collateral requirement at any time, other than in the event of a default by the subsidiary. The proceeds from the loan was used to prepay the Senior Secured Debt. The following table summarizes the Company’s long-term debt: December 31, 2018 December 31, 2017 (In thousands) Convertible debt $ 29,163 $ 115,624 Mortgage loan 12,394 12,658 Term loan facility 75,000 — Revolving credit facility 20,000 — FHLB loan agreement 19,200 — Senior secured note — 79,500 Total principal amount $ 155,757 $ 207,782 Deferred finance costs $ 6,963 $ 23,377 Total long-term debt $ 148,794 $ 184,405 As of the date of this report, we were in compliance with the applicable terms of all our covenants and other requirements under the Revolving agreement, Term Note, Convertible Debt, cash borrowings and other loans. Our ability to secure future debt financing depend, in part, on our ability to remain in such compliance. As long as there is no default or an event of default exist we are allowed to payout dividends in an aggregate amount not to exceed $10.0 million in any fiscal year. The covenants and other requirements under the revolving agreement represent the most restrictive provisions that we are subject to with respect to our long-term debt. The schedule of principal payments on long-term debt is as follows: December 31, Amount (In thousands) 2019 $ 7,777 2020 7,790 2021 7,806 2022 7,822 2023 84,589 Thereafter 39,973 Total $ 155,757

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 1 3 . Income Taxes The following table summarizes the provision for income taxes: For the Year Ended December 31, 2018 2017 2016 (In thousands) Federal: Current $ 28,891 $ (24,380 ) $ 16,575 Deferred (20,636 ) 18,383 2,735 Provision for Federal income tax (benefit) expense 8,255 (5,997 ) 19,310 State: Current 4,162 (20 ) 2,893 Deferred (578 ) 1,244 335 Provision for State income tax expense 3,584 1,224 3,228 (Benefit) provision for income taxes $ 11,839 $ (4,773 ) $ 22,538 The income tax (benefit) expense differs from the amounts computed by applying the U.S. federal income tax rate of as indicated below to pretax income as a result of the following (in thousands): For the Year Ended December 31, 2018 2017 2016 Expected income tax expense at federal rate 21.0 % 35.0 % 35.0 % State tax expense 5.5 % (22.8 )% 3.7 % Permanent items 0.7 % (2.3 )% 0.2 % Non-deductible conversion option liability — (255.0 )% — Non-deductible stock compensation 2.1 % (26.0 )% 0.1 % Tax exempt interest (1.6 )% 27.0 % (2.1 )% Non-deductible acquisition costs 0.4 % (15.2 )% 0.2 % Executive compensation 162(m) 4.3 % (11.5 )% 1.1 % Political contributions 0.5 % (7.8 )% 0.7 % Tax rate change (2.3 )% 362.3 % — Other (0.2 )% (2.7 )% 1.1 % Reported income tax expense 30.4 % 81.0 % 40.0 % The 2018 effective tax rate was affected by various permanent tax differences, predominately disallowed executive compensation deductions which were further limited in 2018 and future years upon the enactment of H.R.1, commonly referred to as the Tax Cuts and Jobs Act (“Tax Act”). The 2017 effective tax rate was affected by the valuation change for the conversion option liability (refer to Note 12 - Long Term Debt) The Tax Act was signed into law on December 22, 2017 and contains several key provisions that impact the Company's business, including the reduction of the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018, the reduction in the amount of executive compensation that could qualify as a tax deduction, and a change in how property and casualty taxpayers discount loss reserves. Under current accounting guidance, the effects of changes in tax rates and laws are recognized in the period in which the new legislation is enacted. However, due to the timing of the enactment of the Tax Act and its proximity to December 31, 2017, the SEC issued SAB 118 which provides a framework for companies to account for uncertainties in applying the provisions of the Tax Act. SAB 118 allows companies to record a provisional amount in situations where a company does not have the necessary information available but can make a reasonable estimate. In situations where companies cannot make a reasonable estimate due to various factors, including lack of information, a provisional amount is not recorded. Instead, companies will continue to apply current accounting guidance based on the provision of the tax laws that were in effect immediately prior to the Tax Act being enacted. The measurement period, as defined in SAB 118 for the Tax Act, begins on the enactment date of the Tax Act and ends when a company has obtained, prepared and analyzed the information that was needed in order to complete the accounting requirements under current accounting guidance. However, under no circumstances will the measurement period extend beyond one year from the enactment date of the Tax Act. The Company’s accounting for all elements of the Tax Act is now complete, consistent with the closing of the SAB 118 measurement period on December 22, 2018. As a result of guidance released by the IRS, namely Revenue Procedures 2019-06, the Company recorded the following adjustments to the accounting for the Tax Act during 2018: Property and Casualty Reserves: The Act changes the discount rate and payment patterns utilized to discount certain lines of business when computing the allowable tax reserve deduction. On December 19, 2018, the IRS issued Revenue Procedure 2019-06 which provided taxpayers with the applicable discount factors for use in these computations. As a result of this additional guidance, the Company recorded an increase to its gross deferred tax asset for lo and an increase to its gross deferred tax liabilities for reserv during 2018. The recorded adjustment had no impact on the Company’s effective tax rate. The significant components of deferred tax assets and liabilities included in the consolidated balance sheets as December 31 were as follows: For the Year Ended December 31, 2018 2017 Deferred tax assets: (In thousands) Unearned premiums $ 12,090 $ 12,488 Unearned commission 10,733 11,987 Net operating loss 109 4,727 Tax-related discount on loss reserve 2,329 1,250 Unrealized loss 2,631 — Stock-based compensation 297 — Accrued expenses 2,321 1,950 Other 1,443 331 Total deferred tax asset 31,953 32,733 Deferred tax liabilities: Deferred acquisition costs 17,494 9,775 Prepaid expenses 112 27,568 Unrealized gain — 30 Property and equipment 664 — Note discount 710 3,818 Basis in purchased investments 163 335 Basis in purchased intangibles 18,982 24,250 Other 1,533 1,290 Total deferred tax liabilities 39,658 67,066 Net deferred tax liability $ (7,705 ) $ (34,333 ) As of December 31, 2018, the Company has net operating loss carryforwards for federal and state income tax purposes of $450,000 and $0, respectively. The losses will expire in 2031. In addition, the Company had a $400,000 capital loss carryforward which will expire in 2023. In assessing the net carrying The statute of limitations related to our federal and state income tax returns remains open from our filings for 2015 through 2017. For the 2014 tax year, the federal income tax return was examined by the tax authority resulting in no material adjustment. Currently, no taxing authorities are examining any of our federal or state income tax returns. The reinsurance affiliate, which is based in Bermuda, made an irrevocable election under section 953(d) of the U.S. Internal Revenue Code of 1986, as amended, to be treated as a domestic insurance company for U.S. Federal income tax purposes. As a result of this election, our reinsurance subsidiary is subject to United States income tax as if it were a U.S. corporation. As of December 31, 2018, the Company had no uncertain tax positions or unrecognized tax benefits that, if recognized, would impact the effective income tax rate.

Statutory Accounting and Regula

Statutory Accounting and Regulations	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Statutory Accounting and Regulations	Note 1 4 . Statutory Accounting and Regulations State laws and regulations, as well as national regulatory agency requirements, govern the operations of all insurers such as our insurance subsidiaries. The various laws and regulations require that insurers maintain minimum amounts of statutory surplus and risk-based capital; restrict insurers’ ability to pay dividends; restrict the allowable investment types and investment mixes and subject the Company’s insurers to assessments. The Company’s insurance subsidiaries are required to file with state insurance regulatory authorities an “Annual Statement” which reports, among other items, net income and surplus as regards policyholders, which is called stockholder’s equity under GAAP. Combined results of the Company’s insurance subsidiaries reported statutory net loss of $64.5 million and a net income of $50.6 for the years ended December 31, 2018 and 2017, respectively. The Company’s insurance subsidiaries must maintain capital and surplus ratios or balances as determined by the regulatory authority of the states in which they are domiciled. Heritage P&C is required to maintain capital and surplus equal to the greater of $15 million or 10% of their respective liabilities. Zephyr is required to maintain a deposit of $750,000 in a federally insured financial institution. NBIC is required to maintain capital and surplus of $3.0 million. The combined statutory surplus for Heritage P&C, Zephyr, and NBIC was $375.1 million at December 31, 2018. The combined statutory surplus for Heritage P&C and Zephyr was $376.3 million at December 31, 2017. State laws also require the Company’s insurance subsidiaries to adhere to prescribed premium-to-capital surplus ratios, with which the Company’s insurance affiliates are complying. At December 31, 2018, our insurance subsidiaries met the financial and regulatory requirements of the states in which they do business. The legislatures of the states of domicile of our insurance affiliates have adopted the National Association of Insurance Commissioners (“NAIC”) recommendations with regard to expansion of the regulation of insurers to include non-insurance entity affiliates. Specifically, the new law permits the state insurance regulators to examine affiliated entities within an insurance holding company system in order to ascertain the financial condition of the insurer. The law also provides for certain disclosures regarding enterprise risk, which are satisfied by the provision of related information filed with the SEC. The NAIC published risk-based capital guidelines for insurance companies that are designed to assess capital adequacy and to raise the level of protection that statutory surplus provides for policy holders. Most states, including Florida, Hawaii, and Rhode Island, have enacted the NAIC guidelines as statutory requirements, and insurers having less statutory surplus than required will be subject to varying degrees of regulatory action, depending on the level of capital inadequacy. State insurance regulatory authorities could require an insurer to cease operations in the event the insurer fails to maintain the required statutory capital. The level of required risk-based capital (“RBC”) is calculated and reported annually. There are five outcomes to the RBC calculation set forth by the NAIC which are as follows: 1. No Action Level—If RBC is greater than 200%, no further action is required. 2. Company Action Level—If RBC is between 150%-200%, the insurer must prepare a report to the regulator outlining a comprehensive financial plan that identifies conditions that contributed to the insurer’s financial condition and proposes corrective actions. 3. Regulatory Action Level—If RBC is between 100%-150%, the state insurance commissioner is required to perform any examinations or analyses to the insurer’s business and operations that he or she deems necessary as well as issuing appropriate corrective orders. 4. Authorized Control Level—If RBC is between 70%-100%, this is the first point that the regulator may take control of the insurer even if the insurer is still technically solvent and is in addition to all the remedies available at the higher action levels. 5. Mandatory Control Level—If RBC is less than 70%, the regulator is required to take steps to place the insurer under its control regardless of the level of capital and surplus. At December 31, 2018, the ratio of adjusted capital to authorized control level risk based capital for each of our insurance company subsidiaries was above 300%. State laws for Florida, Hawaii, and Rhode Island permit an insurer to pay dividends or make distributions out of that part of statutory surplus derived from net operating profit and net realized capital gains. The applicable laws pertain to the state of domicile of each insurance company affiliate and provide calculations to determine the amount of dividends or distributions that can be made without the prior approval of the insurance regulatory authority and the amount of dividends or distributions that would require prior approval of the insurance regulatory authority. In the state of Florida, a dividend may be taken without regulatory approval if the dividend is equal to or less than the greater of 10% of the insurer’s surplus or the insurer’s net income. In the state of Rhode Island, a dividend may be taken without regulatory approval if the dividend is equal to or less than the lesser of 10% of the insurer’s surplus or the insurer’s net income excluding realized capital gains. The state of Hawaii restricts dividends without regulatory approval to the smaller of prior years’ net income or 10% of prior year’s surplus. Heritage P&C and NBIC have not paid dividends in any of the last three years. Zephyr paid dividends of $7.6 million for the each of the years ended December 31, 2018 and 2017. Statutory risk-based capital requirements may further restrict our insurance subsidiaries ability to pay dividends or make distributions if the amount of the intended dividend or distribution would cause statutory surplus to fall below minimum risk-based capital requirements. However, the consent order authorizing commencement of operations for Heritage P&C precluded payment of dividends without the prior approval of FLOIR until July 31, 2017. State insurance laws limits an insurer’s investment in equity instruments and also restricts investments in medium to low quality debt instruments. The Company’s insurance affiliates were in compliance with all investment restrictions at December 31, 2018 and 2016. Governmental agencies or certain quasi-governmental entities can levy assessments upon the Company in the states in which the Company writes policies. See Note 1 Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices” The Company reported its insurance subsidiaries’ assets, liabilities and results of operations in accordance with GAAP, which varies from statutory accounting principles prescribed or permitted by state laws and regulations, as well as by general industry practices. The following items are principal differences between statutory accounting and GAAP: • Statutory accounting requires that the Company excluded certain assets, called non-admitted assets, from the balance sheet. • Statutory accounting requires the Company to expense policy acquisition costs when incurred, while GAAP allows the Company to defer and amortize policy acquisition costs over the estimated life of the policies. • Statutory accounting dictates how much of a deferred income tax asset the Company can admit on a statutory balance sheet. • Statutory accounting requires that the Company record certain investments at cost or amortized cost, while the Company records other investments at fair value; however, GAAP requires that we record all available for sale investments at fair value. • Statutory accounting requires that surplus notes, also known as surplus debentures, be recorded in statutory surplus, while GAAP requires the Company to record surplus notes as a liability. • Statutory accounting allows bonds to be carried at amortized cost or fair value based on the rating received from the Securities Valuation Office of the NAIC, while they are recorded at fair value for GAAP if designated as available for sale. • Statutory accounting allows ceding commission income to be recognized when written if the cost of acquiring and renewing the associated business exceeds the ceding commissions, but under GAAP such income is deferred and recognized over the coverage period. • Statutory accounting requires that unearned premiums and loss reserves be presented net of related reinsurance rather than on a gross basis under GAAP. • Statutory accounting requires a provision for reinsurance liability be established for reinsurance recoverable on paid losses aged over ninety days and for unsecured amounts recoverable from unauthorized reinsurers. Under GAAP there is no charge for uncollateralized amounts ceded to a company not licensed in the insurance affiliate’s domiciliary state and a reserve for uncollectable reinsurance is charged through earnings rather than surplus or equity. • Statutory accounting requires an additional admissibility test outlined in Statements on Statutory Accounting Principles, No. 101 and the change in deferred income tax is reported directly in capital and surplus, rather than being reported as a component of income tax expense under GAAP. The table below reconciles the Company’s consolidated GAAP net (loss) income to statutory net income of its insurance subsidiaries (in thousands): For the Year Ended December 31, 2018 2017 2016 Consolidated GAAP net income (loss) $ 27,155 $ (1,119 ) $ 33,865 (Decrease) increase due to: Deferred income taxes (16,868 ) 32,644 6,069 Deferred acquisition costs (31,377 ) 1,101 (7,979 ) Surplus note interest — (4 ) — Non-statutory subsidiaries (31,158 ) 5,410 (32,874 ) Investment basis difference 335 446 540 Pre-acquisition income — 20,839 3,755 Equity compensation (2,408 ) (2,408 ) (2,107 ) Convertible notes (1,570 ) 1,051 — Commission revenue (6,289 ) (6,700 ) — Change in fair value income statement 2,078 — — Other (4,372 ) (709 ) (702 ) Statutory net (loss) income of insurance subsidiaries $ (64,472 ) $ 50,553 $ 567 The Company’s reinsurance subsidiary, Osprey, which was incorporated on April 23, 2013, is licensed as a Class 3a Insurer under The Bermuda Insurance Act 1978 and related regulations. Osprey is required to maintain statutory capital and surplus of at least $1.0 million and maintain liquid resources or have access to liquid resources equal to its maximum obligation for which it is responsible under the terms of any reinsurance arrangement to which it is a party. Osprey maintains sufficient collateral to comply with regulatory requirements as of December 31, 2018. Bermuda’s standard for financial statement reporting is U.S. GAAP.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 1 5 . Commitments and Contingencies The Company is involved in claims-related legal actions arising in the ordinary course of business. The Company accrues amounts resulting from claims-related legal actions in unpaid losses and loss adjustment expenses during the period that it determines an unfavorable outcome becomes probable and it can estimate the amounts. Management makes revisions to its estimates based on its analysis of subsequent information that the Company receives regarding various factors, including: (i) per claim information; (ii) company and industry historical loss experience; (iii) judicial decisions and legal developments in the awarding of damages; and (iv) trends in general economic conditions, including the effects of inflation. When determinable, the Company discloses the range of possible losses in excess of those accrued and for reasonably possible losses. Leases On February 9, 2018, the Company entered into a 68-month lease agreement for additional office space in Sunrise, Florida commencing on March 1, 2018, with a free base rental period for the first three months. Following the expiration of the free base rental period, the monthly base rental payments were $39,146 for months 4-12; $40,330 for months 13-24; $41,535 for months 25-36; $42,780 for months 37-48; $44,065 for months 49-60 and $45,389 for months 61-68. Effective February 12, 2018, the Company has entered into a five-year lease agreement for office space in Plainview, New York. The term of the lease commenced on May 1, 2018. The monthly base rental payments were $2,975 until April 30, 2020 and thereafter were $3,064 per month from May 1, 2020 to May 31, 2021 and $3,156 through May 2022; and 3,251 through March 2023. In November 2018, the Company entered into a ten-year lease agreement for additional office space in Johnston, Rhode Island commencing on or before February 15, 2019, with an abatement of monthly installments annual fixed rent for the six-month period beginning on the term of commencement date and not to exceed $347,712 in aggregate. The lease provides for a $28,098 moving allowance and up to $1.3 million or $45 per square foot allowance for improvements. The annual fixed leased obligation at commencement date is $695,495 at year one and increases 2% each year thereafter. The Company is committed under various operating leases agreements for office space. The Company and its subsidiaries lease certain facilities and equipment under long-term lease agreements. Rent expense for the year ended December 31, 2018 was $797,000. Future minimum rent payments on the office space leases for the next five years and thereafter are as follows: Amount (In thousands) 2019 $ 922 2020 1,357 2021 1,386 2022 1,415 2023 1,272 Thereafter 4,863 $ 11,215

Accounts Payable and Other Liab

Accounts Payable and Other Liabilities	12 Months Ended
	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Accounts Payable and Other Liabilities	Note 1 6 . Accounts Payable and Other Liabilities Other liabilities consist of the following as of December 31, 2018 and December 31, 2017: Description December 31, 2018 December 31, 2017 (In thousands) Deferred ceding commission 44,996 $ 51,109 Outstanding claim checks 15,360 79,666 Accounts payable and other payables 8,379 17,948 Accrued interest and issuance costs 1,285 3,117 Accrued dividends 1,589 — Escrow — 1,210 Premium tax 2,241 3,660 Other liabilities 460 218 Commission payables 11,654 12,609 Total other liabilities $ 85,964 $ 169,537

Accrued Bonus Compensation

Accrued Bonus Compensation	12 Months Ended
	Dec. 31, 2018
Compensation Related Costs [Abstract]
Accrued Bonus Compensation	Note 1 7 . Accrued Bonus Compensation At December 31, 2018, the Company recognized employee bonus compensation expense in aggregate of $8.2 million, which the Company paid out in cash approximately $2.2 million during 2018, the remainder is expected to be paid in 2019. At December 31, 2017, the Company recognized employee bonus compensation expense of approximately $6.9 million, which the Company paid out in cash of approximately $0.9 million for 2017.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Note 1 8 . Related Party Transactions In January 2017, the Company entered into a consulting agreement with Mrs. Shannon Lucas, the wife of the Chairman and CEO, in which she agreed to provide consulting services related to the Company’s catastrophe reinsurance and risk management program at a rate of $400 per hour. The consulting agreement has no specific term and either party may terminate the agreement upon providing written notice. Additionally, she serves as a director of Heritage P&C and NBIC with an annual compensation of $150,000. For the years ended December 31, 2018 and 2017, the Company paid consulting fees to Ms. Lucas of approximately $628,800 and $440,000, respectively.

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plan	Note 1 9 . Employee Benefit Plan . The legacy Heritage entities (“Heritage P&C, CAN, HMGA and Zephyr”) provide a 401(k) plan for substantially all employees. A fully vested contribution of 100% on the first 3% of employees’ contribution and 50% on the next 2% of the employees’ contribution is made to the plan. The maximum match is 4%. For the years ended December 31, 2018 and 2017, the contributions made to the plan on behalf of the participating employees were approximately $665,000 and $815,000. The Florida-based legacy Heritage entities provide employees a partially self-insured healthcare plan and benefits. For the years ended December 31, 2018 and 2017, incurred medical premium costs amounted to an aggregate of $3.2 million and $3.0 million, respectively. An additional liability of approximately $367,700 was recorded for unpaid claims as of December 31, 2018. A stop loss reinsurance policy caps the maximum loss that could be incurred under the self-insured plan. The stop loss coverage per employee is $150,000 for which any excess cost would be covered by the reinsurer subject to an aggregate limit for losses in excess of $1.5 million which would provide up to $1.0 million of coverage. Any excess of the $1.5 million retention and the $1.0 million of aggregate coverage would be borne by the Florida-based legacy Heritage entities. The aggregate stop loss commences once our expenses exceed 125% of the annual aggregate expected claims. NBIC provides a 401(k) plan for its employees who elect to participate and matches the contributions up to a maximum of 4%. Employer contributions vest 20% each year until fully vested after 5 years. For the years ended December 31, 2018 and 2017, NBIC contributions to the plan on behalf of the participating employees were approximately $$388,400 and $35,350, respectively. Commencing in the fourth quarter of 2018, NBIC joined the self-insured healthcare plan and benefits plan offered by Heritage. A stop loss reinsurance policy caps the maximum loss that could be incurred under the self-insured plan. The stop loss coverage per employee is $150,000 for which any excess cost would be covered by the reinsurer subject to an aggregate limit for losses in excess of $1.5 million which would provide up to $1.0 million of coverage. Any excess of the $1.5 million retention and the $1.0 million of aggregate coverage would be borne by NBIC. The aggregate stop loss commences once our expenses exceed 125% of the annual aggregate expected claims

Equity

Equity	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Equity	Note 20 . Equity The total amount of authorized capital stock consists of 50,000,000 shares of common stock and 5,000,000 shares of preferred stock. As of December 31, 2018, the Company had 29,477,756 shares of common stock outstanding, 7,214,797, treasury shares of common stock and 605,801 unvested restricted common stock issued reflecting total paid-in capital of $325.3 million as of such date. Common Stock Holders of common stock are entitled to one vote for each share held on all matters subject to a vote of stockholders, subject to the rights of holders of any outstanding preferred stock. Accordingly, holders of a majority of the shares of common stock entitled to vote in any election of directors may elect all of the directors standing for election, subject to the rights of holders of any outstanding preferred stock. Holders of common stock will be entitled to receive ratably any dividends that the board of directors may declare out of funds legally available therefor, subject to any preferential dividend rights of outstanding preferred stock. Upon the Company’s liquidation, dissolution or winding up, the holders of common stock will be entitled to receive ratably its net assets available after the payment of all debts and other liabilities and subject to the prior rights of holders of any outstanding preferred stock. Holders of common stock have no preemptive, subscription, redemption or conversion rights. There is no redemption or sinking fund provisions applicable to the common stock. All outstanding shares of the Company’s capital stock (excluding restricted stock) are fully paid and nonassessable. Stock Repurchase Program On September 14, 2015, the Company announced that the Company’s Board of Directors, authorized a stock repurchase program authorizing the Company to repurchase up to $20 million of the Company’s common stock. On May 4, 2016, the Board of Directors authorized an additional stock repurchase of up to $50 million of the Company’s common stock through December 31, 2018 For the year ended December 31, 2018, the Company purchased through open market or private transactions an aggregate of 115,200 shares at a total cost of $2.0 million. For the year ended December 31, 2017, the Company purchased through open market or private transactions an aggregate of 1,787,870 shares at a total cost of $21.6 million. For the year ended December 31, 2016, the Company purchased through open market or private transactions an aggregate of 1,759,330 shares at a total cost of $25.6 million. In August 2017, in connection with the Convertible Note issuance the Company repurchased 3,552,397 shares of its common stock at a price of $11.26 per share from institutional investors for $40.0 million in a series of open market transactions. Dividends For the year ended December 31, 2018, we recorded quarterly cash dividends of approximately $6.4 million as follows: Quarter Ended March 31, 2018 June 30, 2018 September 30, 2018 December 31, 2018 Cash dividend per common share $ 0.06 $ 0.06 $ 0.06 $ 0.06 Total cash dividends paid $ 1,601,100 $ 1,594,188 $ 1,595,999 $ 1,595,999 Record date March 15, 2018 June 15, 2018 September 15, 2018 December 31, 2018 Payment date April 3, 2018 July 6, 2018 October 3, 2018 January 4, 2019 Cash dividends declared on our outstanding weighted average number of basic common shares for the periods presented were as follows: For the Years Ended December 31, 2018 2017 Cash dividends per common share $ 0.24 $ 0.30

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	Note 2 1 . Stock-Based Compensation The Company has adopted the Heritage Insurance Holdings, Inc., Omnibus Incentive Plan (the “Plan”) effective on May 22, 2014. The Plan authorized 2,981,737 shares of common stock for issuance under the Plan for future grants. As of December 31, 2018, all unvested shares have been forfeited. At December 31, 2018 and 2017, there were 1,170,097 and 1,125,243 shares available for grant under the Plan, respectively. The Company recognizes compensation expense under ASC 718 for its stock-based payments based on the fair value of the awards. The Company grants stock options at exercise prices equal to the fair market value of the Company’s stock on the dates the options are granted. The options have a maximum term of ten-years from the date of grant and vest primarily in equal annual installments over a range of one to five-year periods following the date of grant for employee options. If a participant’s employment relationship ends, the participant’s vested awards will remain exercisable for the shorter of a period of 30 days or the period ending on the latest date on which such award could have been exercisable. The fair value of each option grant is separately estimated for each grant date. The fair value of each option is amortized into compensation expense on a straight-line basis between the grant date for the award and each vesting date. The Company estimates the fair value of all stock option awards as of the date of the grant by applying the Black-Scholes-Merton multiple-option pricing valuation model. The application of this valuation model involves assumptions that are judgmental and highly sensitive in the determination of compensation expense. Restricted Stock The Company has also granted shares of its common stock subject to certain restrictions under the Plan. Restricted stock awards granted to employee’s vest in equal installments generally over a five-year period from the grant date subject to the recipient’s continued employment. The fair value of restricted stock awards is estimated by the market price at the date of grant and amortized on a straight-line basis to expense over the period of vesting. Recipients of restricted stock awards have the right to receive dividends. In 2018, the Board of Directors granted 155,801 restricted shares vesting over three to five years, to the Company’s executives and other key employees. No restricted stock was granted during the years ended December 31, 2017 and 2016. Restricted stock activity for the three years ended December 31, 2018, 2017 and 2016 is as follows: Weighted-Average Grant-Date Fair Number of shares Value per Share Non-vested, at December 31, 2015 1,125,000 $ 21.40 Granted — — Vested (158,365 ) 14.67 Canceled and surrendered (66,635 ) 14.67 Non-vested, at December 31, 2016 900,000 $ 21.40 Granted — — Vested (137,935 ) 16.53 Canceled and surrendered (87,065 ) 17.41 Non-vested, at December 31, 2017 675,000 $ 21.40 Granted 155,801 16.10 Vested (112,500 ) 16.35 Canceled and surrendered (112,500 ) 16.35 Non-vested, at December 31, 2018 605,801 $ 20.41 Awards are being amortized to expense over the three to five year vesting period. Relating to the restricted stock the Company recognized $5.3 million, $4.8 million and $3.8 million of compensation expense for the years ended December 31, 2018, 2017 and 2016, respectively. At December 31, 2018, there was approximately $10.9 million, representing unrecognized compensation expense related to the non-vested restricted stock, substantially all of which is expected to be recognized over approximately a two-year period. During the year ended December 31, 2018, restricted shares were vested and released, of which 225,000 shares had been granted to employees. Of the shares released to employees, 112,500 shares were withheld by the Company to cover withholding taxes of $1.8 million. During 2017 and 2016, 87,065 and 66,635 shares, respectively, were withheld to cover withholding taxes of $1.6 million and $1.0 million respectively, arising from the vesting of restricted shares. We recognized no tax benefit from the restricted stock awards and related paid dividends for the years 2018, 2017 and 2016, respectively.

Condensed Financial Information

Condensed Financial Information of Heritage Insurance Holdings, Inc.	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Financial Information of Registrant	Note 2 2 . Condensed Financial Information of Heritage Insurance Holdings, Inc. The following summarizes the major categories of Heritage Insurance Holdings, Inc.’s financial statements: BALANCE SHEET As of December 31, 2018 2017 (In thousands) ASSETS Fixed maturity securities, available for sale, at fair value $ — $ — Cash and cash equivalents 13,892 16,249 Investment in and advances to subsidiaries 598,525 584,983 Other assets 3,324 1,294 Total Assets $ 615,741 $ 602,526 LIABILITIES AND STOCKHOLDERS' EQUITY Other liabilities 190,408 222,710 Total Liabilities $ 190,408 $ 222,710 Paid-in-capital 325,295 294,839 Treasury stock, at costs, 7,214,797 (89,185 ) (87,185 ) Accumulated other comprehensive income (6,527 ) (3,064 ) Retained earnings 195,750 175,226 Total Stockholders' Equity $ 425,333 $ 379,816 Total Liabilities and Stockholders' Equity $ 615,741 $ 602,526 STATEMENT OF OPERATIONS For the Year Ended December 31, 2018 2017 2016 (In thousands, except share and per share amounts) Revenue: Other revenue $ 1,858 $ 1,949 $ 1,403 Total revenue 1,858 1,949 1,403 Expenses: General and administrative expense 19,005 17,792 11,558 Amortization of debt issuance cost 4,623 2,314 41 Interest expense, net 17,277 11,158 321 Other non-operating expense, net 9,791 41,013 — Total expenses $ 50,696 $ 72,277 $ 11,920 Loss before income taxes and equity in net income of subsidiaries (48,838 ) (70,328 ) (10,517 ) Benefit from income taxes (9,545 ) (6,120 ) (2,035 ) Loss before equity in net income of subsidiaries (39,293 ) (64,208 ) (8,482 ) Equity in net income of subsidiaries — — — Net loss $ (39,293 ) $ (64,208 ) $ (8,482 ) STATEMENT OF CASH FLOW For the Year Ended December 31, 2018 2017 2016 (In thousands) Net cash provided by (used in) operating activities $ (21,004 ) $ 27,154 $ (6,045 ) Investing Activities Purchases of investment available for sale — 78,213 (77,910 ) Dividends received from subsidiaries 92,800 57,575 85,096 Acquisition of a business — (210,000 ) — Investments and advances to subsidiaries (42,200 ) — (74,361 ) Net cash provided by (used in) investing activities 50,600 (47,058 ) (73,220 ) Financing Activities Proceeds from exercise of stock options and warrants — 417 — Proceeds from issuance of note payable, net of issuance costs 110,769 114,335 77,910 Proceeds from mortgage loan — 12,658 — Repayment of secured senior notes (79,500 ) — — Mortgage loan payments (264 ) — — Repurchase of convertible notes (52,739 ) — — Excess tax (expense) benefit on stock-based compensation — — (739 ) Shares tendered for income tax withholdings (1,839 ) (1,599 ) (977 ) Purchase of treasury stock (2,000 ) (61,623 ) (25,562 ) Dividends (6,380 ) (8,249 ) (6,806 ) Net cash provided by financing activities (31,953 ) 55,939 43,826 Increase (decrease) in cash and cash equivalents (2,357 ) 8,881 (29,394 ) Cash and cash equivalents, beginning of period 16,249 7,368 36,762 Cash and cash equivalents, end of year $ 13,892 $ 16,249 $ 7,368

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	Note 2 3 . Quarterly Results for 2018 and 2017 (unaudited) The following table provides a summary of unaudited quarterly results for the periods presented (in thousands, except per share data): For the year ended December 31, 2018 First Quarter Second Quarter Third Quarter Fourth Quarter Net premiums earned $ 106,108 $ 111,204 $ 118,238 $ 118,632 Investment income $ 3,075 $ 2,470 $ 3,852 $ 1,407 Total revenues $ 112,026 $ 117,972 $ 125,295 $ 124,878 Total operating expenses $ 87,209 $ 109,822 $ 111,079 $ 102,525 Operating income $ 24,817 $ 8,150 $ 14,216 $ 22,353 Income (loss) from continuing operations $ 14,829 $ 2,408 $ 5,989 $ 3,929 Basic net income (loss) per share $ 0.58 $ 0.09 $ 0.23 $ 0.15 Diluted net income (loss) per share $ 0.55 $ 0.09 $ 0.23 $ 0.15 For the year ended December 31, 2017 First Quarter Second Quarter Third Quarter Fourth Quarter Net premiums earned $ 92,176 $ 90,452 $ 95,208 $ 101,728 Investment income $ 2,502 $ 2,973 $ 2,735 $ 3,122 Total revenues $ 99,293 $ 96,938 $ 101,774 $ 108,618 Total expenses $ 87,403 $ 83,876 $ 100,361 $ 85,448 Operating income $ 11,890 $ 13,062 $ 1,413 $ 23,170 Income (loss) from continuing operations $ 5,983 $ 6,642 $ (8,696 ) $ (5,048 ) Basic net income (loss) per share $ 0.21 $ 0.23 $ (0.34 ) $ (0.18 ) Diluted net income (loss) per share $ 0.21 $ 0.23 $ (0.34 ) $ (0.18 ) The sum of quarterly amounts, including per share amounts, may not equal amounts reported for year-to-date periods. This is due to the effects of rounding and changes in the number of weighted-average shares outstanding for each period.

Segment Data

Segment Data	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Data	Note 24. Segment Data Our primary products are personal and commercial residential property insurance, which at December 31, 2018 was offered in Alabama, Connecticut, Florida, Georgia, Hawaii, Massachusetts, New York, New Jersey, North Carolina, Rhode Island and South Carolina. Our Florida domiciled insurance company, Heritage P&C, is authorized by each of the respective state insurance departments in Alabama, Georgia, Florida, Mississippi, North Carolina and South Carolina. Our Hawaii domiciled insurance company, Zephyr, writes business only in Hawaii and is authorized by the Hawaii Insurance Division. Our Rhode Island domiciled insurance company, NBIC, is authorized by each of the respective state insurance departments in Connecticut, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island, and Virginia. Our other operating subsidiaries include: Heritage MGA, LLC, our managing general agent; Pawtucket Insurance Company (PIC), which is a property insurance company no longer writing insurance policies; Osprey Re Ltd. (“Osprey”), our reinsurance subsidiary that may provide a portion of the reinsurance protection purchased by our insurance subsidiaries; Contractors’ Alliance Network, LLC (“CAN”), our vendor network manager for Florida claims which includes BRC Restoration Specialists, Inc. (“BRC”), our provider of restoration, emergency and recovery services; Skye Lane Properties, LLC, our property management subsidiary; First Access Insurance Group, LLC, our retail agency; Westwind Underwriters, Inc., and Heritage Insurance Claims, LLC, both inactive subsidiaries reserved for future development. The Company is a single reportable segment. None of the individual subsidiaries meet the quantitative thresholds to qualify as reportable segment. The following table depicts the distribution of our in-force premium as of December 31, 2018 and 2017, respectively. At December 31, 2018 At December 31, 2017 State In Force Premiums Policy In Force In Force Premiums Policy In Force (in thousands) (in thousands) Florida $ 505,992 230,937 $ 535,838 242,400 New York 179,650 92,431 179,104 94,138 New Jersey 70,322 51,576 71,930 54,469 Massachusetts 59,592 32,629 55,645 32,457 Hawaii 53,480 67,181 55,366 70,337 Rhode Island 20,784 13,189 19,312 12,758 North Carolina 14,685 14,280 13,161 10,729 South Carolina 9,502 6,411 6,145 4,102 Connecticut 6,864 4,370 3,982 2,722 Alabama 1,571 1,543 10 11 Georgia 1,238 1,139 346 327 Total $ 923,680 515,686 $ 940,838 524,450

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 2 5 . Subsequent Events On February 25, 2019, the Company announced that its Board of Directors declared a $0.06 per share quarterly dividend payable on April 3, 2019 to stockholders of record as of March 15, 2019. On February 25, 2019, the Company made a partial paydown on its $20.0 million revolving credit facility debt in the amount of $10.0 million. On February 19, 2019, the Company reacquired $5.8 million of its outstanding Convertible Notes, payment was made in cash of approximately $2.9 million and issuance of 285,201 shares of the Company’s common stock valued at $4.2 million.

Schedule II - Condensed Financi

Schedule II - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information of Registrant	Note 2 2 . Condensed Financial Information of Heritage Insurance Holdings, Inc. The following summarizes the major categories of Heritage Insurance Holdings, Inc.’s financial statements: BALANCE SHEET As of December 31, 2018 2017 (In thousands) ASSETS Fixed maturity securities, available for sale, at fair value $ — $ — Cash and cash equivalents 13,892 16,249 Investment in and advances to subsidiaries 598,525 584,983 Other assets 3,324 1,294 Total Assets $ 615,741 $ 602,526 LIABILITIES AND STOCKHOLDERS' EQUITY Other liabilities 190,408 222,710 Total Liabilities $ 190,408 $ 222,710 Paid-in-capital 325,295 294,839 Treasury stock, at costs, 7,214,797 (89,185 ) (87,185 ) Accumulated other comprehensive income (6,527 ) (3,064 ) Retained earnings 195,750 175,226 Total Stockholders' Equity $ 425,333 $ 379,816 Total Liabilities and Stockholders' Equity $ 615,741 $ 602,526 STATEMENT OF OPERATIONS For the Year Ended December 31, 2018 2017 2016 (In thousands, except share and per share amounts) Revenue: Other revenue $ 1,858 $ 1,949 $ 1,403 Total revenue 1,858 1,949 1,403 Expenses: General and administrative expense 19,005 17,792 11,558 Amortization of debt issuance cost 4,623 2,314 41 Interest expense, net 17,277 11,158 321 Other non-operating expense, net 9,791 41,013 — Total expenses $ 50,696 $ 72,277 $ 11,920 Loss before income taxes and equity in net income of subsidiaries (48,838 ) (70,328 ) (10,517 ) Benefit from income taxes (9,545 ) (6,120 ) (2,035 ) Loss before equity in net income of subsidiaries (39,293 ) (64,208 ) (8,482 ) Equity in net income of subsidiaries — — — Net loss $ (39,293 ) $ (64,208 ) $ (8,482 ) STATEMENT OF CASH FLOW For the Year Ended December 31, 2018 2017 2016 (In thousands) Net cash provided by (used in) operating activities $ (21,004 ) $ 27,154 $ (6,045 ) Investing Activities Purchases of investment available for sale — 78,213 (77,910 ) Dividends received from subsidiaries 92,800 57,575 85,096 Acquisition of a business — (210,000 ) — Investments and advances to subsidiaries (42,200 ) — (74,361 ) Net cash provided by (used in) investing activities 50,600 (47,058 ) (73,220 ) Financing Activities Proceeds from exercise of stock options and warrants — 417 — Proceeds from issuance of note payable, net of issuance costs 110,769 114,335 77,910 Proceeds from mortgage loan — 12,658 — Repayment of secured senior notes (79,500 ) — — Mortgage loan payments (264 ) — — Repurchase of convertible notes (52,739 ) — — Excess tax (expense) benefit on stock-based compensation — — (739 ) Shares tendered for income tax withholdings (1,839 ) (1,599 ) (977 ) Purchase of treasury stock (2,000 ) (61,623 ) (25,562 ) Dividends (6,380 ) (8,249 ) (6,806 ) Net cash provided by financing activities (31,953 ) 55,939 43,826 Increase (decrease) in cash and cash equivalents (2,357 ) 8,881 (29,394 ) Cash and cash equivalents, beginning of period 16,249 7,368 36,762 Cash and cash equivalents, end of year $ 13,892 $ 16,249 $ 7,368
Heritage Insurance Holdings, Inc. [Member]
Condensed Financial Information of Registrant	SCHEDULE II – CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Balance Sheet The following summarizes the major categorizes of Heritage Insurance Holdings, Inc.’s financial statements (in thousands, except per share data): As of December 31, 2018 (In thousands) ASSETS Debt securities, available for sale, at fair value $ — Cash and cash equivalents 13,892 Investment in and advances to subsidiaries 598,523 Other assets 3,324 Total Assets 615,739 LIABILITIES AND STOCKHOLDERS' EQUITY Long-term debt 167,308 Accounts payable 4,915 Deferred income tax 10,692 Other accrued expenses 7,493 Total Liabilities 190,408 Common stock, 30,083,559 shares issued and 29,477,756 outstanding 3 Paid-in-capital 325,290 Treasury stock, at costs, 7,214,797 (89,185 ) Accumulated other comprehensive income (6,527 ) Retained earnings 195,750 Total Stockholders' Equity 425,331 Total Liabilities and Stockholders' Equity $ 615,739 The accompanying note is an integral part of condensed financial statements Condensed Statement of Operations STATEMENT OF OPERATIONS For the Year Ended December 31, 2018 (In thousands) Revenue: Other revenue $ 1,858 Total revenue 1,858 Expenses: General and administrative expense 19,005 Amortization of debt issuance cost 4,623 Interest expense, net 17,277 Other non-operating expense, net 9,791 Total expenses 50,696 Loss before income taxes and equity in net income of subsidiaries (48,838 ) Benefit from income taxes (9,545 ) Loss before equity in net income of subsidiaries (39,293 ) Equity in net income of subsidiaries — Net loss $ (39,293 ) The accompanying note is an integral part of condensed financial statements SCHEDULE II – CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statement of Cash Flows For the Year Ended December 31, 2018 (In thousands) Net loss $ (39,293 ) Adjustments to reconcile net loss to net cash used in operating activities: Stock-based compensation 5,273 Net realized losses (gains) 9,790 Valuation on conversion feature 3,252 Amortization of debt issuance cost 4,623 Deferred income taxes (1,325 ) Changes in operating assets and liabilities Prepaid 121 Income taxes payable (5,080 ) Dividends payable 1,589 Accrued interest on debt (3,771 ) Other assets (3,521 ) Other liabilities 7,338 Net cash used in operating activities (21,004 ) Investing Activities Purchases of investment available for sale — Dividends received from subsidiaries 92,800 Acquisition of a business — Investments and advances to subsidiaries (42,200 ) Net cash provided by investing activities 50,600 Financing Activities Proceeds from exercise of stock options and warrants — Proceeds from issuance of note payable, net of issuance costs 110,769 Proceeds from mortgage loan — Repayment of secured senior notes (79,500 ) Mortgage loan payments (264 ) Repurchase of convertible notes (52,739 ) Excess tax (expense) benefit on stock-based compensation — Shares tendered for income tax withholdings (1,839 ) Purchase of treasury stock (2,000 ) Dividends (6,380 ) Net cash used in financing activities (31,953 ) Increase (decrease) in cash and cash equivalents (2,357 ) Cash and cash equivalents, beginning of period 16,249 Cash and cash equivalents, end of year $ 13,892 The accompanying note is an integral part of condensed financial statements SCHEDULE II – CONDENSED FINANCIAL INFORMATION OF REGISTRANT Notes to Condensed Financial Statements (1) Organization and Basis of Presentation Heritage Insurance Holdings, Inc., (“we”, “our”, “us” and “Heritage Insurance”), established in 2012 and incorporated in the state of Delaware in 2014, is a property and casualty insurance holding company that provides personal and commercial residential property insurance. We are headquartered in Clearwater, Florida and, through our insurance company subsidiaries, Heritage Property & Casualty Insurance Company (“Heritage P&C”), Narragansett Bay Insurance Company (“NBIC”) and Zephyr Insurance Company (“Zephyr”), we write personal residential property insurance for single-family homeowners and condominium owners, and rental property insurance in the states of Alabama, Connecticut, Florida, Georgia, Hawaii, Massachusetts, New Jersey, New York, North Carolina, Rhode Island and South Carolina. We also provide commercial residential insurance for Florida properties and are also licensed in the states of Maryland, Mississippi, Pennsylvania, and Virginia. In order to limit our potential exposure to catastrophic events, we purchase significant reinsurance from third party reinsurers and sponsor catastrophe bonds issued by Citrus Re. The accompanying condensed financial statements included the activity of the Parent Company and the equity basis of its consolidated subsidiaries. Accordingly, these condensed financial statements have been presented for the parent company only. These condensed financial statements should be read in conjunction with the consolidated financial statements and related notes of HIH and subsidiaries set forth in Part II, Item 8 Financial Statements and Supplemental Data of this Annual Report. In applying the equity method to our consolidated subsidiaries, we record the investment at cost and subsequently adjust for additional capital contributions, distributions and proportionate share of earnings or losses.

Schedule V - Valuation Allowanc

Schedule V - Valuation Allowances and Qualifying Accounts	12 Months Ended
	Dec. 31, 2018
Valuation And Qualifying Accounts [Abstract]
Valuation Allowances and Qualifying Accounts	SCHEDULE V – VALUATION ALLOWANCES AND QUALIFYING ACCOUNTS The following table summarizes activity in the Company’s allowance for doubtful accounts for the year ended December 31, 2018. Description Beginning balance Charges in earnings Charges to other accounts Deductions Ending balance Year ended December 31, 2018 Allowance for doubtful accounts $ — — — — $ —

Schedule VI - Supplemental Info

Schedule VI - Supplemental Information Concerning Consolidated Property and Causality Insurance Operations	12 Months Ended
	Dec. 31, 2018
Supplemental Information For Property Casualty Insurance Underwriters [Abstract]
Supplemental Information Concerning Consolidated Property and Causality Insurance Operations	SCHEDULE VI – SUPPLEMENTAL INFORMATION CONCERNING CONSOLIDATED PROPERTY AND CASUALTY INSURANCE OPERATIONS The following table provides certain information related to the Company’s property and casualty operations as of , and for the periods presented (in thousands): As of December 31, For the Year Ended December 31, Year Reserves for Unpaid Losses and LAE Incurred Losses and LAE Current Year Incurred Losses and LAE Prior Years Paid losses and LAE Net Investment Income 2018 $ 432,359 $ 224,080 $ 13,345 $ 210,303 $ 13,280 As of December 31, For the Year Ended December 31, Year Deferred Policy Acquisition Costs ("DPAC") Amortization of DPAC, Net Net Premiums Written Net Premiums Earned Unearned Premiums 2018 $ 73,055 $ 139,630 $ 445,898 $ 454,182 $ 472,357

Basis of Presentation, Nature_2

Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices (Policies)	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Heritage Insurance Holdings, Inc. and its wholly-owned subsidiaries. The accompanying consolidated financial statements include the accounts of the Company and all other entities in which the Company has a controlling financial interest (none of which are variable interest entities). All intercompany accounts and transactions have been eliminated in consolidation. The Company qualifies as an “emerging growth company” as defined in Section 2(a)(19) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). As a result, the Company is eligible for certain exemptions from various reporting requirements applicable to other public companies that are not emerging growth companies. The Company intends to continue to take advantage of some, but not all, of the exemptions available to emerging growth companies until such time that it is no longer an emerging growth company. The Company has, however, irrevocably elected not to take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards. As a result, the Company will comply with new or revised accounting standards on the relevant dates on which adoption of such standards is required for non-emerging growth companies.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with United States Generally Accepted Accounting Principles (“U.S. GAAP”) requires us to make estimates and assumptions about future events that affect the amounts reported in our consolidated financial statements and accompanying notes. We evaluate our estimates on an ongoing basis when updated information related to such estimates becomes available. We base our estimates on historical experience and information available to us at the time these estimates are made. Actual results could differ materially from these estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company’s cash and cash equivalents include demand deposits with financial institutions and short-term, highly-liquid financial instruments with original maturities of three months or less when purchased. The carrying amounts reported in the consolidated balance sheets for interest bearing deposits approximate their fair value because of the short maturity of these financial instruments. The Company excludes from cash and cash equivalents negative cash balances that the Company has with an individual financial institution. The liability presents outstanding checks not yet presented to the financial institution and is reported in accounts payable and other liabilities.
Restricted Cash	Restricted Cash As of December 31, 2018, and 2017, restricted cash was $12.3 million and $20.8 million, respectively. For the years ended December 31, 2018 and 2017, Heritage P&C held approximately $9.0 million and $18.3 million relating to a reinsurance agreement with an entity that issued catastrophe (“CAT”) bonds, as Heritage P&C is contractually required to deposit certain installments of reinsurance premiums into a trust account and $3.2 million and $2.5 million in restricted cash relating to individual regulatory state deposits, respectively. The Company earned interest income of approximately $36,532 and $25,672 on its restricted cash deposits.
Investments	Investments The Company classifies all of its investments in debt securities as available-for-sale and reports them at fair value. Subsequent to its acquisition of debt securities available-for-sale, the Company records changes in value through the date of disposition as unrealized holding gains and losses, net of tax effects, and includes them as a component of other comprehensive income. Equity securities are recorded at fair value with changes in fair value reflected in net income and presented with realized holding gains and losses. The Company includes realized gains and losses, which it calculates using the specific-identification method for determining the cost of securities sold, in net income. The Company amortizes any premium or discount on fixed maturities over the remaining maturity period of the related securities using the effective interest method, and reports the amortization in net investment income. The Company recognizes dividends and interest income when earned. Quarterly, the Company performs an assessment of its debt securities available-for-sale to determine if any are “other-than-temporarily” impaired. An investment is impaired when the fair value of the investment declines to an amount less than the cost or amortized cost of that investment. As part of the assessment process, the Company determines whether the impairment is temporary or “other-than-temporary”. The Company bases its assessment on both quantitative criteria and qualitative information, considering a number of factors including, but not limited to: how long the security has been impaired; the amount of the impairment; the Company intends to sell the investment or it is more likely than not that the Company will have to sell the investment before it recovers the amortized cost or cost; the financial condition and near-term prospects of the issuer; whether the issuer is current on contractually-obligated interest and principal payments; key corporate events pertaining to the issuer and whether the market decline was affected by macroeconomic conditions. If the Company were to determine that a debt security or participation in a commercial mortgage loan was impaired and the Company either intends to sell the investment or it is more likely than not that the Company will have to sell the investment before it is able to recover the amortized cost or cost, then the Company would record the full amount of the impairment in its consolidated statement of operations and other comprehensive income. A large portion of the Company’s investment portfolio consists of debt securities available-for-sale, which may be adversely affected by changes in interest rates as a result of governmental monetary policies, domestic and international economic and political conditions and other factors beyond its control. A rise in interest rates would decrease the net unrealized holding gains of our investment portfolio, offset by the Company’s ability to earn higher rates of return on funds reinvested. Conversely, a decline in interest rates would increase the net unrealized holding gains of our investment portfolio, offset by lower rates of return on funds reinvested. Accumulated other comprehensive income consists solely of debt securities available-for-sale unrealized gains and loss investments and is presented net of income tax.
Fair Value	Fair Value Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants (an exit price). When reporting the fair values of the Company’s financial instruments, the Company prioritizes those fair value measurements into one of three levels based on the nature of the inputs, as follows: • Level 1—Assets and liabilities with values based on unadjusted quoted prices for identical assets or liabilities in an active market that the Company is able to access; • Level 2—Asset and liabilities with values based on quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets in markets that are not active; or valuation models with inputs that are observable, directly or indirectly for substantially the term of the asset or liability. • Level 3—certain inputs are unobservable (supported by little or no market activity) and significant to the fair value measurement. Unobservable inputs reflect the Company’s best estimate of what hypothetical market participants would use to determine a transaction price for the asset or liability at the reporting date based on the best information available in the circumstances. The Company estimates the fair value of its investments using the closing prices on the last business day of the reporting period, obtained from active markets such as the NYSE and NASDAQ. For securities for which quoted prices in active markets are unavailable, the Company uses observable inputs such as quoted prices in inactive markets, quoted prices in active markets for similar instruments, benchmark interest rates, broker quotes and other relevant inputs. The Company does not have any investments in its portfolio which require the use of unobservable inputs. The Company’s estimate of fair value reflects the interest rate environment that existed as of the close of business on December 31, 2018. Changes in interest rates after December 31, 2018 may affect the fair value of the Company’s investments. The Company believes the carrying amounts of its cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, and other current liabilities approximate their fair values at December 31, 2018 and 2017, due to the immediate or short-term maturity of these instruments. The Company’s non-financial assets, such as goodwill and property, plant and equipment are carried at cost until there are indicators of impairment and are recorded at fair value only when an impairment charge is recognized. Long term debt is recorded at carrying value, see Note 12 – Long-Term Debt
Premiums	Premiums The Company records direct and assumed premiums written as revenue net of ceded amounts on a daily pro rata basis over the contract period of the related in force policies or reinsurance contract. For any portion of premiums not earned at the end of the reporting period, the Company records an unearned premium liability. In a one-time only transaction on September 1, 2017, the Company took over approximately 19,000 policies representing approximately $30.0 million in annualized premiums from Sawgrass Mutual Insurance Company. Premiums receivable represents amounts due from our policyholders for billed premiums and related policy fees. We perform a policy-level evaluation to determine the extent to which the balance of premiums receivable exceeds the balance of unearned premiums. We then age any resulting exposure based on the last date the policy was billed to the policyholder, and we establish an allowance for credit losses for any amounts outstanding for more than 90 days. When we receive payments on amounts previously charged off, we reduce bad debt expense in the period we receive the payment. Balances in premiums receivable and the associated allowance account are removed upon cancellation of the policy due to non-payment. We recorded no allowance for the years ended December 31, 2018 and 2017, respectively. Bad debt expense related to uncollectible premiums was $0, $0 and $250,000 for the years ended December 31, 2018, 2017 and 2016, respectively. When the Company receives premium payments from policyholders prior to the effective date of the related policy, the Company records an advance premiums liability. On the policy effective date, the Company reduces the advance premium liability and records the premiums as described above.
Policy Acquisition Costs	Policy Acquisition Costs The Company incurs policy acquisition costs that vary with, and are directly related to, the production of new business. Policy acquisition costs consist of the following four items: (i) commissions paid to outside agents at the time of policy issuance; (ii) policy administration fees paid to a third-party administrator at the time of policy issuance; (iii) premium taxes; and (iv) inspection fees. The Company capitalizes policy acquisition costs to the extent recoverable, then the Company amortizes those costs over the contract period of the related policy. At each reporting date, the Company determines whether it has a premium deficiency. A premium deficiency would result if the sum of the Company’s expected losses, deferred policy acquisition costs, and policy maintenance costs (such as costs to store records and costs incurred to collect premiums and pay commissions) exceeded the Company’s related unearned premiums plus investment income. Should the Company determine that a premium deficiency exists, the Company would write off the unrecoverable portion of deferred policy acquisition cost. NBIC earns ceding commission on its gross and net quota share reinsurance contracts. Our accounting policy is to allocate ceding commission between policy acquisition costs and general and administrative expenses for financial reporting purposes. Ceding commission is allocated between policy acquisition costs and general and administrative expenses based upon the proportion these costs bear to production of new business. For the year ended December 31, 2018, NBIC earned ceding commission income of $72.5 million of which $55.0 million was allocable to policy acquisition costs compared to ceding commission income earned of $8.6 million for the month and year ended December 31, 2017 after the NBIC transaction that was allocated to policy acquisition costs. Ceding commission income is deferred and recognized over the quota share contract period. The amount and rate of ceding reinsurance commissions earned on the net quota share contract can slide within a prescribed minimum and maximum, depending on loss performance and how future losses develop.
Long-Lived Assets-Property and Equipment	Long-Lived Assets—Property and Equipment Property and equipment is stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives as follows: building—40 years; computer hardware and software 3—years; office and furniture equipment—3 to 7 years. Leasehold improvements are amortized over the shorter of the lease term or the asset’s useful life. Expenditures for improvements are capitalized to the property accounts. Replacements and maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred.
Business Acquisition	Business Acquisition The application of the purchase method of accounting for business combinations requires the use of significant estimates and assumptions in determining the fair value of assets acquired and liabilities assumed in order to properly allocate the fair value of the acquired business. The estimates of the fair value of the assets acquired and liabilities assumed are based upon assumptions believed to be reasonable using established valuation techniques that consider a number of factors and when appropriate, valuations performed by independent third-party appraisers. Assets acquired, and liabilities assumed in connection with business combinations are recorded based on their respective fair values at the date of acquisition.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill represents the excess of costs over the fair value of net assets acquired. Goodwill is subject to evaluation for impairment using a fair value-based test. This evaluation is performed annually, during the fourth quarter or more frequently if facts and circumstances warrant. The Company uses a qualitative approach to test goodwill for impairment by first assessing qualitative factors to determine whether it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. The Company applies this qualitative approach as of October 1 annually to any and all reporting units. If required following the qualitative assessment, the first step in the goodwill impairment test involves comparing the fair value of each of a reporting unit to the carrying value of a reporting unit. If the carrying value of a reporting unit exceeds the fair value of the reporting unit, the Company is required to proceed to the second step. In the second step, the fair value of the reporting unit would be allocated to the assets (including unrecognized intangibles) and liabilities of the reporting unit, with any residual representing the implied fair value of goodwill. An impairment loss would be recognized if, and to the extent that, the carrying value of goodwill exceeded the implied value. The Company reviews amortizable intangible assets for impairment whenever events or circumstances indicate that carrying amounts may not be recoverable. If the Company concludes that impairment exists, the carrying amount is reduced to fair value. No impairment was recognized in any period presented.
Impairment of Long-Lived Assets Including Intangible Assets Subject to Amortization	Impairment of Long-Lived Assets Including Intangible Assets Subject to Amortization The Company assesses the recoverability of long-lived assets when events or circumstances indicate that the assets might have become impaired. The Company determines whether the assets can be recovered from undiscounted future cash flows and, if not recoverable, the Company recognizes impairment to reduce the carrying value to fair value. Recoverability of long-lived assets is dependent upon, among other things, the Company’s ability to maintain profitability, so as to be able to meet its obligations when they become due. No impairment was recognized in any period presented.
Unpaid Losses and Loss Adjustment Expenses	Unpaid Losses and Loss Adjustment Expenses The Company’s reserves for unpaid losses and loss adjustment expenses represent the estimated ultimate cost of settling all reported claims plus all claims we incurred related to insured events that have occurred as of the reporting date, but that policyholders have not yet reported to the Company (incurred but not reported, or “IBNR”). The Company estimates its reserves for unpaid losses and loss adjustment expenses using individual case-based estimates for reported claims and actuarial estimates for IBNR losses. The Company continually reviews and adjusts its estimated losses as necessary based on industry development trends, the Company’s evolving claims experience and new information obtained. If the Company’s unpaid losses and loss adjustment expenses are considered to be deficient or redundant, the Company increases or decreases the liability in the period in which it identifies the difference and reflects the change in its current period results of operations. Though the Company’s estimate of the ultimate cost of settling all reported and unreported claims may change at any point in the future, a reasonable possibility exists that its estimate may vary significantly in the near term from the estimated amounts included in the Company’s consolidated financial statements. The Company reports its reserves for unpaid losses and loss adjustment expenses gross of the amounts related to unpaid losses recoverable from reinsurers and reports loss and loss adjustment expenses net of amounts ceded to reinsurers. The Company does not discount its loss reserves for financial statement purposes. The Company remains liable for claims payments if any reinsurer is unable to meet its obligations under the reinsurance agreements. Failure of reinsurers to honor their obligations could result in losses to the Company. The Company evaluates the financial condition of its reinsurers and monitors concentration of credit risk arising from similar geographic regions, activities or economics characteristics of the reinsurers to minimize its exposure to significant loses from reinsurers insolvencies. The Company contracts with several reinsurers to secure its annual reinsurance coverage, which the excess of loss treaties generally becomes effective June 1st each year. The Company purchases reinsurance each year taking into consideration probable maximum losses and reinsurance market condition.
Other Revenue	Other revenue Our insurance affiliates may charge policyholders a policy fee on each policy written; these fees are not subject to refund, and the Company recognizes the income immediately when collected. The Company also charges pay-plan fees to policyholders that pay its premiums in more than one installment and records the fees as income when collected. Other income includes rental income due under non-cancelable leases for space at the Company’s commercial property.
Reinsurance	Reinsurance The Company follows industry practice of reinsuring a portion of our risks. Reinsurance involves transferring, or “ceding”, all or a portion of the risk exposure on policies the Company writes to another insurer, known as a reinsurer. To the extent that the Company’s reinsurers are unable to meet the obligations they assume under the Company’s reinsurance agreements, the Company remains liable for the entire insured loss. The Company’s reinsurance agreements are generally short-term, prospective contracts. The Company records an asset, prepaid reinsurance premiums, and a liability, reinsurance payable, for the entire contract amount upon commencement of new reinsurance agreements. The Company amortizes its prepaid reinsurance premiums over the 12-month contract period. When the Company incurs losses recoverable under its reinsurance program, the Company records amounts recoverable from its reinsurers on paid losses plus an estimate of amounts recoverable on unpaid losses. The estimate of amounts recoverable on unpaid losses is a function of the Company’s liability for unpaid losses associated with the reinsured policies; therefore, the amount changes in conjunction with any changes to the estimate of unpaid losses. Given that an estimate of amounts recoverable from reinsurers on unpaid losses may change at any point in the future because of its relation to the Company’s reserves for unpaid losses, a reasonable possibility exists that an estimated recovery may change significantly from initial estimates. The Company estimates uncollectible amounts receivable from reinsurers based on an assessment of factors including the creditworthiness of the reinsurers and the adequacy of collateral obtained, where applicable. The Company recorded no uncollectible amounts under its reinsurance program or bad debt expense related to reinsurance for the years ended December 31, 2018, 2017 and 2016.
Assessment	Assessment Guaranty fund and other insurance-related assessments imposed upon the Company’s insurance company affiliates are recorded as policy acquisition costs in the period the regulatory agency imposes the assessment. To recover guaranty or other insurance-related assessments, the Company in turn submits a plan for recoupment to the Insurance Commissioner for approval and upon approval, begins collecting a policy surcharge that will allow it to collect the prior year’s assessments. There were no assessments during the periods presented. The Company collects other assessments imposed upon policyholders as a policy surcharge and records the amounts collected as a liability until the Company remits the amounts to the regulatory agency that imposed the assessment.
Long-Term Debt	Long-Term Debt A long-term debt instrument with embedded features such as conversion and redemption options is evaluated to determine whether bifurcation and derivative accounting is applicable. If such instrument is not subject to derivative accounting, it is further evaluated to determine if the Company is required to separately account for the liability and equity components. To determine the carrying values of the debt and derivative components at issuance, the Company measures the fair value of a similar liability, including any embedded features other than the conversion option, and assigns such value to the liability or equity component. The liability component’s fair value is then subtracted from the initial proceeds to determine the carrying value of the debt.
Convertible Notes	Convertible Notes In August 2017 and September 2017, the Company issued collectively $136.8 million of 5.875% Convertible Senior Notes (the “Convertible Notes”) due August 1, 2037. The Convertible notes are accounted for in accordance with ASC 470-20. At the time of issuance and until December 1, 2017, the Company recorded the fair value of the derivatives on its balance sheet at fair value with changes in the values of these derivatives reflected in the consolidated statement of operations. Beginning December 1, 2017, the conversion option of the Convertibles Notes qualifies for the equity classification and will no longer be accounted for as a separate derivative instrument liability in accordance with applicable U.S. GAAP guidance. The Company separately accounts for the liability and equity components of Convertible Notes that can be settled in cash by allocating the proceeds from issuance between the liability component and the embedded conversion option, or equity component, in accordance with accounting for convertible debt instruments that may be settled in cash (including partial cash settlement) upon conversion. The value of the equity component is calculated by first measuring the fair value of the liability component, using the interest rate of a similar liability that does not have a conversion feature, as of the issuance date. The difference between the proceeds from the convertible debt issuance and the amount measured as the liability component is recorded as the equity component with a corresponding discount recorded on the debt. The Company recognizes the accretion of the resulting discount using the effective interest method as part of interest expense in its consolidated statements of operations.
Debt Extinguishment	Debt Extinguishment The Company has reacquired convertible senior notes over a series of transactions. In accordance with ASC 470 “ Debt
Debt Issuance and Discount Costs	Debt Issuance and Discount Costs In connection with the issuance of debt, any debt issuance and discount costs are reflected on the balance sheet as an offset to long-term debt and amortized using the effective interest method over the life of the underlying debt instrument.
Stock-Based Compensation	Stock-Based Compensation The Company measures stock-based compensation at the grant date based on the fair value of the award and recognizes stock-based compensation expense over the requisite vesting period. Determining the fair value of stock option awards requires judgment, including estimating stock price volatility, forfeiture rates and expected option life. Restricted stock awards are valued based on the fair value of the stock on the grant date and the related compensation expense is recognized over the vesting period.
Earnings Per Share	Earnings Per Share The Company reports both basic earnings per share and diluted earnings per share. To calculate basic earnings per share, the Company divides net income attributable to common shareholders by the weighted-average number of shares outstanding during the period, including vested restricted shares. The Company calculates diluted earnings per share by dividing net income attributable to common shareholders by the weighted-average number of shares, and the effect of share equivalents, vested and unvested restricted shares and convertible notes outstanding during the period using the treasury stock method to calculate common stock equivalents.
Income Tax	Income tax Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which we expect to recover or settle those temporary differences. The effect on deferred taxes and liabilities attributable to a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are recognized to the extent that there is sufficient positive evidence, as allowed under the Accounting Standard Codification Topic 740 ("ASC 740"), Income Taxes, to support the recoverability of those deferred tax assets. The Company establishes a valuation allowance to the extent that there is insufficient evidence to support the recoverability of the deferred tax asset under ASC 740. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax planning strategies, and results of recent operations. If it is determined that the deferred tax assets would be realizable in the future in excess of their net recorded amount, an adjustment would be made to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. We recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more likely than not threshold, the amount recognized in the consolidated financial statements is the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant taxing authority. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Tax Act”), which makes broad and complex changes to the U.S. Tax code. One of the provisions of the Tax Act reduced the corporate federal income tax rate from 35% to 21% effective January 1, 2018. Pursuant to current accounting guidance, all deferred tax assets and liabilities were re-measured at December 31, 2017 to recognize the tax rate that is expected to apply when the tax effects are ultimately recognized in future periods upon the date of enactment.
Concentrations of Risk	Concentrations of Risk The Company’s current operations subject us to the following concentrations of risk: • Revenue—The Company writes residential property and liability policies exclusively. • Geographic—The Company writes its premium in coastal states in the southeastern and northeastern United States and Hawaii • Group concentration of credit risk—All of the Company’s reinsurers engage in similar activities and have similar economic characteristics that could cause their ability to repay us to be similarly affected by changes in economic or other conditions. • Credit risk—The Company chooses to deposit all its cash at twelve financial institutions. The Company mitigates its geographic and group concentrations of risk by entering into reinsurance contracts with highly rated, financially-stable reinsurers, and by securing irrevocable letters of credit from reinsurers when necessary. With regard to cash, the Company had $244.6 million and $138.4 million in excess of Federal Deposit Insurance Corporation (“FDIC”) insurance limits at December 31, 2018 and 2017, respectively. Deposits held in non- interest-bearing transaction accounts are combined with interest-bearing accounts and are insured up to $250,000.
Reclassifications	Reclassification We reclassified certain amounts in the 2017 and 2016 consolidated statement of cash flows to conform to the 2018 presentation, relating to the presentation of restricted cash and cash equivalents. This reclassification is a result of our adoption of Accounting Standards Update (ASU) 2016-18, Restricted Cash effective January 1, 2018.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220) The Company early adopted the updated guidance effective January 1, 2018 and elected to reclassify the stranded income tax effects relating to the reduction in the federal corporate income tax rate from AOCI”) to retained earnings at the beginning of the period of adoption. The net impact of the accounting change resulted in a $0.4 million decrease in AOCI comprised of income taxes associated with net unrealized losses on investments and a corresponding increase in retained earnings In May 2017, the FASB issued ASU No. 2017-09, Compensation–Stock Compensation (Topic 718): Scope of Modification Accounting In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805). Clarifying the Definition of a Business, In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows, In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. Technical Corrections and Improvements to Financial Instruments—Overall Beginning in the fourth quarter of 2018, the Company reclassified the changes in the fair value of equities available-for-sale in net realized gains and losses whereas it was previously included in other revenue on the Consolidated Statements of Operations. At December 31, 2018, the Company reported in aggregate $2.0 million of net unrealized equity securities losses of which for the nine months ended September 30, 2018, $927,000 was reported in other revenue. In May 2014, the FASB issued ASU Topic 2014-09, Revenue from Contracts with Customers Accounting Pronouncements Not Yet Adopted The Company describes below recent pronouncements that may have a significant effect on its consolidated financial statements or on its disclosures upon future adoption. The Company does not discuss recent pronouncements that are not anticipated to have an impact on, or are unrelated to, its financial condition, results of operations, or related disclosures. In August 2018, the FASB issued ASU 2018-12 , Financial Services – Insurance (Topic 944) Targeted Improvements to the Accounting for Long-Duration Contracts In March 2018, the FASB issued ASU 2018-04, Investments-Debt Securities (Topic 320) and Regulated Operations (Topic 980). Investments-Debt Securities Regulated Operations In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses Measurement of Credit Losses on Financial Instruments In February 2016, the FASB issued ASU 2016-02 (as subsequently amended by ASU 2018 - 01, ASU 2018 - 10 and ASU 2018 - 11) Lease Accounting, requires that a lessee 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 lease liabilities. As with previous guidance, there continues to be a differentiation between finance leases and operating leases, however this distinction now primarily relates to differences in the manner of expense recognition over time and in the classification of lease payments in the statement of cash flows. Lease assets and liabilities arising from both finance and operating leases will be recognized in the statement of financial position. ASU 2016 - 02 leaves the accounting for leases by lessors largely unchanged from previous GAAP. The transitional guidance for adopting the requirements of ASU 2016 - 02 calls for a modified retrospective approach that includes a number of optional practical expedients that entities may elect to apply. In addition, ASU 2018 - 11 provides for an additional (and optional) transition method by which entities may elect to initially apply the transition requirements in Topic 842 at that Topic’s effective date with the effects of initially applying Topic 842 recognized as a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption and without retrospective application to any comparative prior periods presented. To date, we have taken an inventory of all our operating leases, which consist primarily of auto, equipment and real estate owned and unowned by the Company, started our review of key lease agreements, including contract review for embedded leases, and are currently evaluating lease terms, lease payments and appropriate discount rates to use in calculating the right-to-use asset and lease liability. At December 31, 2018, the Company estimated its lease obligations subject to the new accounting guidance to be in aggregate of $5.2 million with lease terms ranging from 5 to 10 years. In addition, we are currently evaluating the transition package of practical expedients permitted within the new standard, which among other things, allows us to use hindsight to determine the reasonably certain lease term for existing leases, and allows for the adoption of the new standard at the effective date without adjusting the comparative prior periods presented. We will be continuously assessing the impact of the new standard and the impact on our systems, processes and controls through January 1, 2019, our planned adoption date. No other new accounting pronouncement issued or effective during the fiscal year had or is expected to have a material impact on our consolidated financial statements or disclosures.

Business Acquisitions (Tables)

Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Summary of Preliminary Allocation of Purchase Price	The following table summarizes the allocation of the purchase price as of the balance sheet date: Purchase Consideration Cash and stock, net of cash acquired $ 180,919 Assets acquired Investments $ 101,215 Premiums and agent's receivable 24,127 Other assets 13,173 Prepaid reinsurance premiums 137,378 Reinsurance recoverable on paid and unpaid claims 73,073 Intangible assets 81,240 Total assets acquired $ 430,206 Liabilities assumed Unpaid losses and loss adjustment expenses 93,804 Unearned premiums 175,050 Reinsurance payable 16 Deferred revenue 57,809 Accounts payable 12,913 Other liabilities assumed 15,701 Total liabilities assumed $ 355,292 Net assets acquired $ 74,914 Goodwill (1) 106,005 Total purchase price, net of cash acquired $ 180,919
Summary of Pro Forma Information	Unaudited Pro Forma Financial Information The following unaudited pro forma results of operations assume that NBIC acquisition occurred at the beginning of the periods presented. The pro forma amounts include certain adjustments, including depreciation and amortization expense and income taxes. The pro forma amounts for the twelve-month period below excludes acquisition-related charges. Accordingly, these unaudited pro forma results are presented for information purposes only and are not necessarily indicative of what have been if the acquisition have been if the acquisitions had occurred as of January 1, 2016, nor are the indicative of future results of operations. Year Ended December 31, 2017 2016 (in thousands, except per share) Revenue $ 456,560 $ 511,663 Net income $ 13,844 $ 42,397 Basic, earnings per share $ 0.48 $ 1.33 Diluted, earnings per share $ 0.47 $ 1.33

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Schedule of Amortized Cost, Gross unrealized Gains and Losses, and Fair Value of Debt Securities Available-for-Sale	The amortized cost, gross unrealized gains and losses, and fair value of the Company’s debt securities available-for-sale are as follows: December 31, 2018 Cost or Adjusted / Amortized Cost Gross Gains Gross Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities (1) $ 48,739 $ 40 $ 738 $ 48,041 States, municipalities and political subdivisions 60,028 46 785 59,289 Special revenue 249,026 210 3,881 245,355 Industrial and miscellaneous 155,678 81 3,302 152,457 Redeemable preferred stocks 4,920 — 413 4,507 $ 518,391 $ 378 $ 9,119 $ 509,649 (1) U.S. government and agency securities include pledged debt securities with an estimated fair value of $31.0 million under the terms and condition of the advance agreement entered into with a financial institution in 2018. The Company is permitted to withdraw or exchange any portion of the pledged collateral over the minimum requirement at any time. December 31, 2017 Cost or Adjusted / Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 39,445 $ 7 $ 572 $ 38,880 States, municipalities and political subdivisions 76,876 104 569 76,411 Special revenue 269,277 524 2,124 267,677 Industrial and miscellaneous 162,093 668 633 162,128 Redeemable preferred stocks 4,767 4 71 4,700 $ 552,458 $ 1,307 $ 3,969 $ 549,796
Schedule of Debt Securities Available-for-Sale by Contractual Maturity	The following table presents debt securities available-for-sale by contractual maturity for the periods presented: December 31, 2018 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Debt Securities Available-for-sale (In thousands) (In thousands) Due in one year or less $ 41,529 8 % $ 41,382 8 % Due after one year through five years 177,298 34 % 175,227 34 % Due after five years through ten years 134,057 26 % 130,921 26 % Due after ten years 165,507 32 % 162,119 32 % Total $ 518,391 100 % $ 509,649 100 % December 31, 2017 Cost or Amortized Cost Percent of Total Fair Value Percent of Total Debt Securities Available-for-sale (In thousands) (In thousands) Due in one year or less $ 81,783 15 % $ 81,668 15 % Due after one year through five years 169,452 31 % 168,671 31 % Due after five years through ten years 154,400 28 % 153,463 28 % Due after ten years 146,823 26 % 145,994 26 % Total $ 552,458 100 % $ 549,796 100 %
Schedule of Realized Gains (Losses) by Major Investments Category	The Company calculates the gain or loss realized on the sale of investments by comparing the sales price (fair value) to the cost or adjusted/amortized cost of the security sold. The Company determines the cost or adjusted/amortized of the security sold using the specific identification method. The following table details the Company’s realized gains (losses) by major investments category as of December 31, 2018 and 2017, respectively: 2018 2017 Gains (Losses) Fair Value at Sale Gains (Losses) Fair Value at Sale (In thousands) (In thousands) For the years ended December 31, Debt securities $ 85 $ 25,647 $ 2,732 $ 705,138 Equity securities 1 169 2,131 31,231 Total realized gains 86 25,816 4,863 736,369 Debt securities (249 ) 58,971 (363 ) 56,354 Equity securities (236 ) 4,840 (3,936 ) 11,806 Total realized losses (485 ) 63,811 (4,299 ) 68,160 Unrealized losses on equity securities (1) (2,078 ) — — — Net realized gain (losses) $ (2,477 ) $ 89,627 $ 564 $ 804,529 (1) Represents unrealized loss on securities held pursuant to ASU 2016-01 Recognition and Measurement of Financial Assets and Financial Liabilities, effective January 1, 2018.
Schedule of Realized Gains and Losses from Investments Include Sales of Securities and Unrealized Gains and Losses	As a result, beginning on January 1, 2018, realized gains and losses from these investments include both sales of securities and unrealized gains and losses as follows: Years Ended December 31, 2018 (In thousands) Net losses recognized during the period on equity securities $ (2,314 ) Less: Net losses (gains) recognized from equity securities sold 236 Unrealized losses recognized on equity securities still held at reporting date (2,078 )
Summary of Net Investment Income	The following table summarizes the Company’s net investment income by major investment category for the years ended December 31, 2018 and 2017, respectively: For the Year Ended December 31, 2018 2017 2016 (In thousands) Debt securities available-for-sale $ 9,591 $ 10,368 $ 8,709 Equity securities 1,333 1,922 1,955 Cash, cash equivalents and short-term investments 1,703 960 226 Other investments 2,767 197 21,000 Net investment income 15,394 13,447 10,911 Investment expenses 2,114 2,115 1,730 Net investment income, less investment expenses $ 13,280 $ 11,332 $ 9,181
Schedule of Debt Securities Available-for-Sale in an Unrealized Loss Position, Aggregate Fair Value	The following tables present, for all debt securities available-for-sale in an unrealized loss position (including securities pledged), the aggregate fair value and gross unrealized by length of time the security has continuously been in an unrealized loss position: Less Than Twelve Months Twelve Months or More December 31, 2018 Number of Securities Gross Unrealized Losses Fair Value Number of Securities Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities 17 $ 129 $ 10,485 66 $ 609 $ 20,488 States, municipalities and political subdivisions 13 103 12,864 42 682 39,979 Industrial and miscellaneous 214 1,479 70,156 232 1,822 70,375 Special revenue 105 1,260 76,335 323 2,621 108,319 Redeemable preferred stocks 55 193 2,541 27 221 1,965 404 $ 3,164 $ 172,381 690 $ 5,955 $ 241,126 Less Than Twelve Months Twelve Months or More December 31, 2017 Number Securities Gross Unrealized Losses Fair Number of Securities Gross Unrealized Losses Fair Value (In thousands) Debt Securities Available-for-sale U.S. government and agency securities 53 $ 284 $ 20,053 24 $ 289 $ 9,294 States, municipalities and political subdivisions 51 359 49,803 8 210 10,503 Industrial and miscellaneous 284 376 87,898 38 256 11,788 Special revenue 295 777 133,580 183 1,347 69,359 Redeemable preferred stocks 41 66 3,987 17 5 61 724 $ 1,862 $ 295,321 270 $ 2,107 $ 101,005

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill (in thousands) Balance as of December 31, 2016 $ 46,454 Goodwill acquired 106,005 Impairment — Balance as of December 31, 2017 $ 152,459 Goodwill acquired — Impairment — Balance as of December 31, 2018 $ 152,459
Schedule of Amortizing and Non-amortizing Intangible Assets	The tables below detail the finite-lived intangible assets, net as of December 31, 2018 and 2017, respectively (amounts in thousands): December 31, 2018 Weighted -average Amortization (years) Gross Carrying Amount Accumulated Amortization Intangible Assets, net (1) Amortizing intangible assets Brand 8 $ 17,810 $ (3,319 ) $ 14,491 Agent relationships 9 15,500 (2,259 ) 13,241 Renewal rights 14 40,600 (2,932 ) 37,668 Customer relations 7 870 (297 ) 573 Trade names 8 9,000 (1,308 ) 7,692 Value of business acquired 1 25,400 (25,400 ) — Non-compete 1 4,790 (2,920 ) 1,870 Total intangible assets $ 113,970 $ (38,435 ) $ 75,535 (1) Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized. December 31, 2017 Weighted -average Amortization (years) Gross Carrying Amount Accumulated Amortization Intangible Assets, net (1) Amortizing intangible assets Brand 14 $ 1,210 $ (195 ) $ 1,015 Agent relationships 10 15,500 (789 ) 14,711 Renewal rights 15 57,200 (2,162 ) 55,038 Customer relations 8 870 (211 ) 659 Trade names 10 9,000 (408 ) 8,592 Value of business acquired 1 25,400 (9,083 ) 16,317 Non-compete 2 4,790 (811 ) 3,979 Total intangible assets $ 113,970 $ (13,659 ) $ 100,311 (1) Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized.
Schedule of Estimated Amortization of Intangible Assets	Estimated annual pretax amortization of intangible assets for each of the next five years and thereafter is as follows (in thousands): Year Amount 2019 $ 8,208 2020 $ 6,365 2021 $ 6,351 2022 $ 6,351 2023 $ 6,351 Thereafter $ 41,909 $ 75,535

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share	The following table sets forth the computation of basic and diluted net income (loss) per share for the periods indicated: For the Year Ended December 31, 2018 2017 2016 Basic earnings (loss) per share: Net income (loss) attributable to common stockholders (000's) $ 27,155 $ (1,119 ) $ 33,865 Weighted average shares outstanding 25,941,253 26,798,465 29,632,171 Basic earnings (loss) per share: $ 1.05 $ (0.04 ) $ 1.14 Diluted earnings (loss) per share: Net income (loss) attributable to common stockholders (000's) $ 27,155 $ (1,119 ) $ 33,865 Weighted average shares outstanding 25,941,253 26,798,465 29,632,171 Weighted average dilutive shares 154,621 — 2,178 Total weighted average dilutive shares 26,095,874 26,798,465 29,634,349 Diluted earnings (loss) per share: $ 1.04 $ (0.04 ) $ 1.14

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value Measurements	The following table presents information about the Company’s assets measured at fair value on a recurring basis. The Company assesses the levels for the investments at each measurement date, and transfers between levels are recognized on the actual date of the event or change in circumstances that caused the transfer in accordance with the Company’s accounting policy regarding the recognitions of transfers between levels of the fair value hierarchy. For the years ended December 31, 2018 and 2017, there were no transfers in or out of Level 1, 2, and 3. December 31, 2018 Total Level 1 Level 2 Level 3 (in thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 48,041 $ 354 $ 47,687 $ — States, municipalities and political subdivisions 59,289 — 59,289 — Special revenue 245,355 — 245,355 — Industrial and miscellaneous 152,457 — 152,457 — Redeemable preferred stocks 4,507 4,507 — — $ 509,649 $ 4,861 $ 504,788 $ — December 31, 2017 Total Level 1 Level 2 Level 3 (in thousands) Debt Securities Available-for-sale U.S. government and agency securities $ 38,880 $ 359 $ 38,521 $ — States, municipalities and political subdivisions 76,411 — 76,411 — Special revenue 267,677 — 267,677 — Industrial and miscellaneous 162,128 — 162,128 — Redeemable preferred stocks 4,700 — 4,700 — $ 549,796 $ 359 $ 549,437 $ —

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2018
Comprehensive Income Net Of Tax [Abstract]
Summary of Other Comprehensive Income (Loss) and Tax Impact of Each Component of Other Comprehensive Income	The following table is a summary of other comprehensive income (loss) and discloses the tax impact of each component of other comprehensive income for the years ended December 31, 2018, 2017 and 2016, respectively: For the Year Ended December 31, 2018 2017 2016 Pre-tax Tax After- tax Pre- tax Tax After- tax Pre-tax Tax After- tax (in thousands) Other comprehensive income Change in unrealized losses on investments, net $ (5,700 ) $ 2,281 $ (3,419 ) $ 5,688 $ (2,713 ) $ 2,975 $ (3,120 ) $ 2,561 $ (559 ) Reclassification adjustment of realized losses (gains) included in net income 163 (49 ) 114 (564 ) (457 ) $ (1,021 ) (1,733 ) (693 ) $ (2,426 ) Effect on other comprehensive income $ (5,537 ) $ 2,232 $ (3,305 ) $ 5,124 $ (3,170 ) $ 1,954 $ (4,853 ) $ 1,868 $ (2,985 )

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consists of the following at December 31, 2018 and 2017 (in thousands): December 31, 2018 December 31, 2017 (In thousands) Land $ 2,582 $ 2,582 Building 11,390 12,148 Computer hardware and software 4,901 4,093 Office furniture and equipment 1,397 759 Tenant and leasehold improvements 4,477 3,660 Vehicle fleet 854 815 Total, at cost 25,601 24,057 Less: accumulated depreciation and amortization (7,603 ) (5,309 ) Property and equipment, net $ 17,998 $ 18,748
Schedule of Expected Annual Rental Income Due Under Non-Cancellable Operating Leases for Real Estate Properties	Expected annual rental income due under non-cancellable operating leases for our real estate properties is as follows (in thousands): Year Amount January 1 to December 31, 2019 $ 2,698 January 1 to December 31, 2020 2,758 January 1 to December 31, 2021 2,818 January 1 to December 31, 2022 2,874 January 1 to December 31, 2023 1,902 Thereafter 506 $ 13,556

Deferred Policy Acquisition C_2

Deferred Policy Acquisition Costs (Tables)	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Schedule of Activity of DPCC	For the Year Ended December 2018 2017 (In thousands) Beginning balance of deferred ceding commission income $ 51,109 $ 57,808 Ceding commission deferred 68,044 1,901 Less: ceding commission earned (74,157 ) (8,600 ) Ending balance of deferred ceding commission income $ 44,996 $ 51,109
Summary of Activity in Deferred Policy Acquisition Costs (DPAC)	The table below depicts the activity with regard to DPAC for the years ended December 31, 2018 and 2017: For the Year Ended December 2018 2017 (In thousands) Beginning Balance $ 41,678 $ 42,779 Policy acquisition costs deferred 171,007 82,791 Amortization (139,630 ) (83,892 ) Ending Balance $ 73,055 $ 41,678

Reinsurance (Tables)

Reinsurance (Tables)	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Schedule of Effect of Reinsurance Arrangements in Consolidated Statement of Income	The Company’s reinsurance arrangements had the following effect on certain items in the Consolidated Statement of Income for the year ended December 31, 2018: For the Year Ended December 31, 2018 Premiums Written Premiums Earned Losses and Loss Adjustment Expenses (in thousands) Direct $ 923,349 $ 926,326 $ 855,780 Ceded (477,451 ) (472,144 ) (618,355 ) Net $ 445,898 $ 454,182 $ 237,425

Reserve for Unpaid Losses (Tabl

Reserve for Unpaid Losses (Tables)	12 Months Ended
	Dec. 31, 2018
Insurance [Abstract]
Summary of Reserve for Unpaid Losses	The table below summarizes the activity related to the Company’s reserve for unpaid losses: For the Year Ended December 31, 2018 2017 2016 Balance, beginning of period $ 470,083 $ 140,137 $ 83,722 Less: reinsurance recoverable on unpaid losses 315,353 589 — Net balance, beginning of period 154,730 139,548 83,722 Incurred related to: Current year 224,080 188,914 220,071 Prior years 13,345 12,567 18,791 Total incurred 237,425 201,481 238,862 Paid related to: Current year 104,368 114,344 120,626 Prior years 105,935 107,479 62,407 Total paid 210,303 221,823 183,033 Total unpaid claims assumed from acquisitions — 35,524 — Net balance, end of period 181,852 154,730 139,551 Plus: reinsurance recoverable on unpaid losses 250,507 315,353 586 Balance, end of period $ 432,359 $ 470,083 $ 140,137
Summary of Incurred, Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	The following is information about incurred and paid claims development as of December 31, 2018, net of reinsurance, as well as cumulative claim frequency and the total of incurred-but-not-reported liabilities plus expected development on reported claims included within the net incurred claims amounts. Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance (in thousands, except number of claims) Unaudited Accident year 2012 & prior 2013 2014 2015 2016 2017 2018 Net IBNR Reserves Reported Claims 2012 & prior $ 102,723 $ 105,765 $ 107,842 $ 106,493 $ 106,331 $ 106,654 $ 106,446 $ 56 53,348 2013 61,157 61,483 62,969 62,166 62,354 62,378 488 13,085 2014 118,991 114,899 113,847 114,984 115,838 1,731 18,430 2015 179,255 197,744 203,792 205,164 5,941 25,952 2016 237,207 242,611 250,990 10,844 27,245 2017 189,163 195,240 18,243 66,739 2018 199,565 88,792 28,939 Total Total $ 1,135,621 $ 126,095 Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance Unaudited Accident year 2012 & prior 2013 2014 2015 2016 2017 2018 2012 & prior $ 92,909 $ 101,323 $ 102,750 $ 104,093 $ 104,362 $ 105,053 $ 105,875 2013 35,771 50,716 55,589 57,647 59,395 60,581 2014 68,732 95,076 101,456 108,509 112,518 2015 103,918 162,654 181,672 192,967 2016 132,679 211,512 233,540 2017 103,148 169,743 2018 84,552 Total $ 959,776
Summary of Reconciliation of Reserve Balances to Liability for Unpaid Loss and Loss Adjustment Expenses	Reconciliation of Reserve Balances to Liability for Unpaid Loss and Loss Adjustment Expenses Unpaid Loss and Allocated Loss Adjustment Expense, Net of Reinsurance $ 175,845 Ceded Unpaid Loss and Allocated Loss Adjustment Expense 250,507 Unpaid Unallocated Loss Adjustment Expense 6,007 Unpaid losses and loss adjustment expenses $ 432,359
Summary of Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance	Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance as of December 31, 2018 (Unaudited) Year - 1 Year - 2 Year - 3 Year - 4 Year - 5 Thereafter Percentage 57% 29% 5% 3% 3% 3%

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Company's Long-Term Debt	The following table summarizes the Company’s long-term debt: December 31, 2018 December 31, 2017 (In thousands) Convertible debt $ 29,163 $ 115,624 Mortgage loan 12,394 12,658 Term loan facility 75,000 — Revolving credit facility 20,000 — FHLB loan agreement 19,200 — Senior secured note — 79,500 Total principal amount $ 155,757 $ 207,782 Deferred finance costs $ 6,963 $ 23,377 Total long-term debt $ 148,794 $ 184,405
Schedule of Principal Payments on Long-Term Debt	The schedule of principal payments on long-term debt is as follows: December 31, Amount (In thousands) 2019 $ 7,777 2020 7,790 2021 7,806 2022 7,822 2023 84,589 Thereafter 39,973 Total $ 155,757

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Summary of Provision for Income Taxes	The following table summarizes the provision for income taxes: For the Year Ended December 31, 2018 2017 2016 (In thousands) Federal: Current $ 28,891 $ (24,380 ) $ 16,575 Deferred (20,636 ) 18,383 2,735 Provision for Federal income tax (benefit) expense 8,255 (5,997 ) 19,310 State: Current 4,162 (20 ) 2,893 Deferred (578 ) 1,244 335 Provision for State income tax expense 3,584 1,224 3,228 (Benefit) provision for income taxes $ 11,839 $ (4,773 ) $ 22,538
Summary of U.S. Federal Income Tax Rate to Pretax Income	The income tax (benefit) expense differs from the amounts computed by applying the U.S. federal income tax rate of as indicated below to pretax income as a result of the following (in thousands): For the Year Ended December 31, 2018 2017 2016 Expected income tax expense at federal rate 21.0 % 35.0 % 35.0 % State tax expense 5.5 % (22.8 )% 3.7 % Permanent items 0.7 % (2.3 )% 0.2 % Non-deductible conversion option liability — (255.0 )% — Non-deductible stock compensation 2.1 % (26.0 )% 0.1 % Tax exempt interest (1.6 )% 27.0 % (2.1 )% Non-deductible acquisition costs 0.4 % (15.2 )% 0.2 % Executive compensation 162(m) 4.3 % (11.5 )% 1.1 % Political contributions 0.5 % (7.8 )% 0.7 % Tax rate change (2.3 )% 362.3 % — Other (0.2 )% (2.7 )% 1.1 % Reported income tax expense 30.4 % 81.0 % 40.0 %
Components of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities included in the consolidated balance sheets as December 31 were as follows: For the Year Ended December 31, 2018 2017 Deferred tax assets: (In thousands) Unearned premiums $ 12,090 $ 12,488 Unearned commission 10,733 11,987 Net operating loss 109 4,727 Tax-related discount on loss reserve 2,329 1,250 Unrealized loss 2,631 — Stock-based compensation 297 — Accrued expenses 2,321 1,950 Other 1,443 331 Total deferred tax asset 31,953 32,733 Deferred tax liabilities: Deferred acquisition costs 17,494 9,775 Prepaid expenses 112 27,568 Unrealized gain — 30 Property and equipment 664 — Note discount 710 3,818 Basis in purchased investments 163 335 Basis in purchased intangibles 18,982 24,250 Other 1,533 1,290 Total deferred tax liabilities 39,658 67,066 Net deferred tax liability $ (7,705 ) $ (34,333 )

Statutory Accounting and Regu_2

Statutory Accounting and Regulations (Tables)	12 Months Ended
	Dec. 31, 2018
Income Statement [Member]
Consolidated GAAP Net (Loss) Income to Statutory Net Income of Insurance Subsidiaries	The table below reconciles the Company’s consolidated GAAP net (loss) income to statutory net income of its insurance subsidiaries (in thousands): For the Year Ended December 31, 2018 2017 2016 Consolidated GAAP net income (loss) $ 27,155 $ (1,119 ) $ 33,865 (Decrease) increase due to: Deferred income taxes (16,868 ) 32,644 6,069 Deferred acquisition costs (31,377 ) 1,101 (7,979 ) Surplus note interest — (4 ) — Non-statutory subsidiaries (31,158 ) 5,410 (32,874 ) Investment basis difference 335 446 540 Pre-acquisition income — 20,839 3,755 Equity compensation (2,408 ) (2,408 ) (2,107 ) Convertible notes (1,570 ) 1,051 — Commission revenue (6,289 ) (6,700 ) — Change in fair value income statement 2,078 — — Other (4,372 ) (709 ) (702 ) Statutory net (loss) income of insurance subsidiaries $ (64,472 ) $ 50,553 $ 567

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rent Payments	Future minimum rent payments on the office space leases for the next five years and thereafter are as follows: Amount (In thousands) 2019 $ 922 2020 1,357 2021 1,386 2022 1,415 2023 1,272 Thereafter 4,863 $ 11,215

Accounts Payable and Other Li_2

Accounts Payable and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Schedule of Other Liabilities	Other liabilities consist of the following as of December 31, 2018 and December 31, 2017: Description December 31, 2018 December 31, 2017 (In thousands) Deferred ceding commission 44,996 $ 51,109 Outstanding claim checks 15,360 79,666 Accounts payable and other payables 8,379 17,948 Accrued interest and issuance costs 1,285 3,117 Accrued dividends 1,589 — Escrow — 1,210 Premium tax 2,241 3,660 Other liabilities 460 218 Commission payables 11,654 12,609 Total other liabilities $ 85,964 $ 169,537

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Summary of Cash Dividends	For the year ended December 31, 2018, we recorded quarterly cash dividends of approximately $6.4 million as follows: Quarter Ended March 31, 2018 June 30, 2018 September 30, 2018 December 31, 2018 Cash dividend per common share $ 0.06 $ 0.06 $ 0.06 $ 0.06 Total cash dividends paid $ 1,601,100 $ 1,594,188 $ 1,595,999 $ 1,595,999 Record date March 15, 2018 June 15, 2018 September 15, 2018 December 31, 2018 Payment date April 3, 2018 July 6, 2018 October 3, 2018 January 4, 2019 Cash dividends declared on our outstanding weighted average number of basic common shares for the periods presented were as follows: For the Years Ended December 31, 2018 2017 Cash dividends per common share $ 0.24 $ 0.30

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Restricted Stock Activity	Restricted stock activity for the three years ended December 31, 2018, 2017 and 2016 is as follows: Weighted-Average Grant-Date Fair Number of shares Value per Share Non-vested, at December 31, 2015 1,125,000 $ 21.40 Granted — — Vested (158,365 ) 14.67 Canceled and surrendered (66,635 ) 14.67 Non-vested, at December 31, 2016 900,000 $ 21.40 Granted — — Vested (137,935 ) 16.53 Canceled and surrendered (87,065 ) 17.41 Non-vested, at December 31, 2017 675,000 $ 21.40 Granted 155,801 16.10 Vested (112,500 ) 16.35 Canceled and surrendered (112,500 ) 16.35 Non-vested, at December 31, 2018 605,801 $ 20.41

Condensed Financial Informati_2

Condensed Financial Information of Heritage Insurance Holdings, Inc. (Tables)	12 Months Ended
	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of Condensed Balance Sheets	The following summarizes the major categories of Heritage Insurance Holdings, Inc.’s financial statements: BALANCE SHEET As of December 31, 2018 2017 (In thousands) ASSETS Fixed maturity securities, available for sale, at fair value $ — $ — Cash and cash equivalents 13,892 16,249 Investment in and advances to subsidiaries 598,525 584,983 Other assets 3,324 1,294 Total Assets $ 615,741 $ 602,526 LIABILITIES AND STOCKHOLDERS' EQUITY Other liabilities 190,408 222,710 Total Liabilities $ 190,408 $ 222,710 Paid-in-capital 325,295 294,839 Treasury stock, at costs, 7,214,797 (89,185 ) (87,185 ) Accumulated other comprehensive income (6,527 ) (3,064 ) Retained earnings 195,750 175,226 Total Stockholders' Equity $ 425,333 $ 379,816 Total Liabilities and Stockholders' Equity $ 615,741 $ 602,526
Schedule of Condensed Statements of Operations	STATEMENT OF OPERATIONS For the Year Ended December 31, 2018 2017 2016 (In thousands, except share and per share amounts) Revenue: Other revenue $ 1,858 $ 1,949 $ 1,403 Total revenue 1,858 1,949 1,403 Expenses: General and administrative expense 19,005 17,792 11,558 Amortization of debt issuance cost 4,623 2,314 41 Interest expense, net 17,277 11,158 321 Other non-operating expense, net 9,791 41,013 — Total expenses $ 50,696 $ 72,277 $ 11,920 Loss before income taxes and equity in net income of subsidiaries (48,838 ) (70,328 ) (10,517 ) Benefit from income taxes (9,545 ) (6,120 ) (2,035 ) Loss before equity in net income of subsidiaries (39,293 ) (64,208 ) (8,482 ) Equity in net income of subsidiaries — — — Net loss $ (39,293 ) $ (64,208 ) $ (8,482 )
Schedule of Condensed Statements of Cash Flows	STATEMENT OF CASH FLOW For the Year Ended December 31, 2018 2017 2016 (In thousands) Net cash provided by (used in) operating activities $ (21,004 ) $ 27,154 $ (6,045 ) Investing Activities Purchases of investment available for sale — 78,213 (77,910 ) Dividends received from subsidiaries 92,800 57,575 85,096 Acquisition of a business — (210,000 ) — Investments and advances to subsidiaries (42,200 ) — (74,361 ) Net cash provided by (used in) investing activities 50,600 (47,058 ) (73,220 ) Financing Activities Proceeds from exercise of stock options and warrants — 417 — Proceeds from issuance of note payable, net of issuance costs 110,769 114,335 77,910 Proceeds from mortgage loan — 12,658 — Repayment of secured senior notes (79,500 ) — — Mortgage loan payments (264 ) — — Repurchase of convertible notes (52,739 ) — — Excess tax (expense) benefit on stock-based compensation — — (739 ) Shares tendered for income tax withholdings (1,839 ) (1,599 ) (977 ) Purchase of treasury stock (2,000 ) (61,623 ) (25,562 ) Dividends (6,380 ) (8,249 ) (6,806 ) Net cash provided by financing activities (31,953 ) 55,939 43,826 Increase (decrease) in cash and cash equivalents (2,357 ) 8,881 (29,394 ) Cash and cash equivalents, beginning of period 16,249 7,368 36,762 Cash and cash equivalents, end of year $ 13,892 $ 16,249 $ 7,368

Summary of Quarterly Results (T

Summary of Quarterly Results (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Summary of Unaudited Quarterly Results	The following table provides a summary of unaudited quarterly results for the periods presented (in thousands, except per share data): For the year ended December 31, 2018 First Quarter Second Quarter Third Quarter Fourth Quarter Net premiums earned $ 106,108 $ 111,204 $ 118,238 $ 118,632 Investment income $ 3,075 $ 2,470 $ 3,852 $ 1,407 Total revenues $ 112,026 $ 117,972 $ 125,295 $ 124,878 Total operating expenses $ 87,209 $ 109,822 $ 111,079 $ 102,525 Operating income $ 24,817 $ 8,150 $ 14,216 $ 22,353 Income (loss) from continuing operations $ 14,829 $ 2,408 $ 5,989 $ 3,929 Basic net income (loss) per share $ 0.58 $ 0.09 $ 0.23 $ 0.15 Diluted net income (loss) per share $ 0.55 $ 0.09 $ 0.23 $ 0.15 For the year ended December 31, 2017 First Quarter Second Quarter Third Quarter Fourth Quarter Net premiums earned $ 92,176 $ 90,452 $ 95,208 $ 101,728 Investment income $ 2,502 $ 2,973 $ 2,735 $ 3,122 Total revenues $ 99,293 $ 96,938 $ 101,774 $ 108,618 Total expenses $ 87,403 $ 83,876 $ 100,361 $ 85,448 Operating income $ 11,890 $ 13,062 $ 1,413 $ 23,170 Income (loss) from continuing operations $ 5,983 $ 6,642 $ (8,696 ) $ (5,048 ) Basic net income (loss) per share $ 0.21 $ 0.23 $ (0.34 ) $ (0.18 ) Diluted net income (loss) per share $ 0.21 $ 0.23 $ (0.34 ) $ (0.18 )

Segment Data (Tables)

Segment Data (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Distribution of In-force Premium	The following table depicts the distribution of our in-force premium as of December 31, 2018 and 2017, respectively. At December 31, 2018 At December 31, 2017 State In Force Premiums Policy In Force In Force Premiums Policy In Force (in thousands) (in thousands) Florida $ 505,992 230,937 $ 535,838 242,400 New York 179,650 92,431 179,104 94,138 New Jersey 70,322 51,576 71,930 54,469 Massachusetts 59,592 32,629 55,645 32,457 Hawaii 53,480 67,181 55,366 70,337 Rhode Island 20,784 13,189 19,312 12,758 North Carolina 14,685 14,280 13,161 10,729 South Carolina 9,502 6,411 6,145 4,102 Connecticut 6,864 4,370 3,982 2,722 Alabama 1,571 1,543 10 11 Georgia 1,238 1,139 346 327 Total $ 923,680 515,686 $ 940,838 524,450

Basis of Presentation, Nature_3

Basis of Presentation, Nature of Business and Significant Accounting Policies and Practices - Additional Information (Detail)	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)Segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 01, 2018USD ($)Policy	Sep. 30, 2017USD ($)	Aug. 31, 2017USD ($)	Dec. 31, 2015USD ($)
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Number of reporting Segment | Segment			1
Highly liquid investments with original maturity			3 months
Restricted cash			$ 12,253,000	$ 12,253,000	$ 20,833,000
Interest income on restricted cash deposits			36,532		25,672
Allowance for uncollectible premiums			0	0	0
Bad debt expense, uncollectible premiums			0		0	$ 250,000
Ceding commission income			74,157,000		8,600,000
Goodwill and intangible assets impairment			0		0	0
Impairment of long-lived assets			0		0	0
Amounts recoverable under reinsurance program			$ 0	0	$ 0	$ 0
U.S. federal corporate tax rate			21.00%		35.00%	35.00%
Cash deposits in excess of FDIC insurance limits			$ 244,600,000	244,600,000	$ 138,400,000
Deposits held			250,000	250,000
Cash, cash equivalents and restricted cash			262,370,000	262,370,000	174,530,000	$ 126,727,000				$ 249,362,000
Net cash provided by (used in) operating activities			95,428,000		7,489,000	82,955,000
Recognition of net pre-tax unrealized loss on equity investments	$ 400,000
Net unrealized (losses) gains on equity investments			(2,078,000)
Operating lease liability obligations			5,200,000	5,200,000
ASU 2016-18 [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Restricted cash					20,900,000	13,000,000
Cash, cash equivalents and restricted cash					174,530	126,727
Net cash provided by (used in) operating activities					(1,111)	7,800,000
Retained Earnings [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Cumulative effect of new accounting standard on unrealized loss on equity investments					(267,000)
Retained Earnings [Member] | ASU 2018-02 [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Cumulative effect of new accounting standard on unrealized loss on equity investments			400,000	400,000
Accumulated Other Comprehensive Loss [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Cumulative effect of new accounting standard on unrealized loss on equity investments					267,000
Accumulated Other Comprehensive Loss [Member] | ASU 2018-02 [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Cumulative effect of new accounting standard on unrealized loss on equity investments			(400,000)	(400,000)
Convertible Senior Notes [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Aggregate principal amount			$ 75,800,000	75,800,000				$ 136,800,000	$ 136,800,000
Interest rate								5.875%	5.875%
Notes maturity date			Aug. 1, 2037
Building [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Property plant and equipment useful life			40 years
Computer Hardware and Software [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Property plant and equipment useful life			3 years
NBIC [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Ceding commission income			$ 72,500,000
Policy Acquisition Costs [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Ceding commission income			$ 55,000,000	$ 54,964,000	8,600,000	$ 0
Other Revenue [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Net unrealized (losses) gains on equity investments		$ (927,000)
Minimum [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Allowance for credit losses for amounts outstanding, term			90 days
Tax benefit likelihood percentage			50.00%
Lease terms			5 years	5 years
Minimum [Member] | Office and Furniture Equipment [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Property plant and equipment useful life			3 years
Maximum [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Lease terms			10 years	10 years
Maximum [Member] | Office and Furniture Equipment [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Property plant and equipment useful life			7 years
Sawgrass Mutual Insurance Company [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Policies assumed							$ 30,000,000
Number of policies acquired | Policy							19,000
Regulatory State Deposit [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Restricted cash			$ 3,200,000	$ 3,200,000	2,500,000
Heritage Property and Casualty Insurance Company [Member]
Basis Of Presentation Nature Of Business And Significant Accounting Policies And Practices [Line Items]
Restricted cash			$ 9,000,000	$ 9,000,000	$ 18,300,000

Business Acquisitions - Additio

Business Acquisitions - Additional Information (Detail) - USD ($)		Nov. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill			$ 152,459,000	$ 152,459,000	$ 46,454,000
Goodwill, expected to be deductible for income tax purposes			$ 6,000,000	$ 6,500,000
NBIC Holdings, Inc [Member]
Business Acquisition [Line Items]
Purchase price		$ 250,000,000
Purchase price for the acquisition in cash		$ 210,000,000
Issuance of common stock for business acquisition, number of restricted common shares		2,222,215
Purchase price for the acquisition, common stock aggregate value		$ 40,000,000
Goodwill	[1]	106,005,000
Goodwill, expected to be deductible for income tax purposes		$ 0
[1]	Goodwill largely consists of expected synergies and economies of scale resulting from the business combination

Business Acquisitions - Summary

Business Acquisitions - Summary of Preliminary Allocation of Purchase Price (Detail) - USD ($) $ in Thousands		Nov. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018
Purchase Consideration
Cash and stock, net of cash acquired			$ 140,919	$ 110,319
Liabilities assumed
Goodwill			$ 152,459	$ 46,454	$ 152,459
NBIC Holdings, Inc [Member]
Purchase Consideration
Cash and stock, net of cash acquired		$ 180,919
Assets acquired
Investments		101,215
Premiums and agent's receivable		24,127
Other assets		13,173
Prepaid reinsurance premiums		137,378
Reinsurance recoverable on paid and unpaid claims		73,073
Total assets acquired		430,206
Liabilities assumed
Unpaid losses and loss adjustment expenses		93,804
Unearned premiums		175,050
Reinsurance payable		16
Deferred revenue		57,809
Accounts payable		12,913
Other liabilities assumed		15,701
Total liabilities assumed		355,292
Net assets acquired		74,914
Goodwill	[1]	106,005
Total purchase price, net of cash acquired		180,919
NBIC Holdings, Inc [Member] | Primarily Value Of Business Acquired [Member]
Assets acquired
Intangible assets		$ 81,240
[1]	Goodwill largely consists of expected synergies and economies of scale resulting from the business combination

Business Acquisitions - Summa_2

Business Acquisitions - Summary of Pro Forma Information (Detail) - NBIC Holdings, Inc [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Revenue	$ 456,560	$ 511,663
Net income	$ 13,844	$ 42,397
Basic, earnings per share	$ 0.48	$ 1.33
Diluted, earnings per share	$ 0.47	$ 1.33

Investments - Schedule of Amort

Investments - Schedule of Amortized Cost, Gross unrealized Gains and Losses, and Fair Value of Debt Securities Available-for-Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	$ 518,391	$ 552,458
Debt Securities Available-for-sale, Gross Unrealized Gains	378	1,307
Debt Securities Available-for-sale, Gross Unrealized Losses	9,119	3,969
Debt Securities Available-for-sale, Fair Value	509,649	549,796
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	48,739	39,445
Debt Securities Available-for-sale, Gross Unrealized Gains	40	7
Debt Securities Available-for-sale, Gross Unrealized Losses	738	572
Debt Securities Available-for-sale, Fair Value	48,041	38,880
States, Municipalities and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	60,028	76,876
Debt Securities Available-for-sale, Gross Unrealized Gains	46	104
Debt Securities Available-for-sale, Gross Unrealized Losses	785	569
Debt Securities Available-for-sale, Fair Value	59,289	76,411
Special Revenue [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	249,026	269,277
Debt Securities Available-for-sale, Gross Unrealized Gains	210	524
Debt Securities Available-for-sale, Gross Unrealized Losses	3,881	2,124
Debt Securities Available-for-sale, Fair Value	245,355	267,677
Industrial and Miscellaneous [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	155,678	162,093
Debt Securities Available-for-sale, Gross Unrealized Gains	81	668
Debt Securities Available-for-sale, Gross Unrealized Losses	3,302	633
Debt Securities Available-for-sale, Fair Value	152,457	162,128
Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	4,920	4,767
Debt Securities Available-for-sale, Gross Unrealized Gains		4
Debt Securities Available-for-sale, Gross Unrealized Losses	413	71
Debt Securities Available-for-sale, Fair Value	$ 4,507	$ 4,700

Investments - Schedule of Amo_2

Investments - Schedule of Amortized Cost, Gross unrealized Gains and Losses, and Fair Value of Debt Securities Available-for-Sale (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 509,649	$ 549,796
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	48,041	$ 38,880
U.S. government and agency securities [Member] | Debt Securities [Member] | Pledged securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 31,000

Investments - Schedule of Debt

Investments - Schedule of Debt Securities Available-for-Sale by Contractual Maturity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Debt Securities Available-for-sale Due in one year or less, Cost or Amortized Cost	$ 41,529	$ 81,783
Debt Securities Available-for-sale Due after one year through five years, Cost or Amortized Cost	177,298	169,452
Debt Securities Available-for-sale Due after five years through ten years, Cost or Amortized Cost	134,057	154,400
Debt Securities Available-for-sale Due after ten years, Cost or Amortized Cost	165,507	146,823
Debt Securities Available-for-sale, Cost or Adjusted / Amortized Cost	$ 518,391	$ 552,458
Debt Securities Available-for-sale Due in one year or less, Percentage of Total	8.00%	15.00%
Debt Securities Available-for-sale Due after one year through five years, Percentage of Total	34.00%	31.00%
Debt Securities Available-for-sale Due after five years through ten years, Percentage of Total	26.00%	28.00%
Debt Securities Available-for-sale Due after ten years, Percentage of Total	32.00%	26.00%
Debt Securities Available-for-sale Total, Percentage	100.00%	100.00%
Debt Securities Available-for-sale Due in one year or less, Fair Value	$ 41,382	$ 81,668
Debt Securities Available-for-sale Due after one year through five years, Fair Value	175,227	168,671
Debt Securities Available-for-sale Due after five years through ten years, Fair Value	130,921	153,463
Debt Securities Available-for-sale Due after ten years, Fair Value	162,119	145,994
Debt Securities Available-for-sale Total, Fair Value	$ 509,649	$ 549,796
Debt Securities Available-for-sale Due in one year or less, Percentage of Total	8.00%	15.00%
Debt Securities Available-for-sale Due after one year through five years, Percentage of Total	34.00%	31.00%
Debt Securities Available-for-sale Due after five years through ten years, Percentage of Total	26.00%	28.00%
Debt Securities Available-for-sale Due after ten years, Percentage of Total	32.00%	26.00%
Debt Securities Available-for-sale Total, Percentage	100.00%	100.00%

Investments - Schedule of Reali

Investments - Schedule of Realized Gains (Losses) by Major Investments Category (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Total realized gains	$ 86	$ 4,863
Total realized losses	(485)	(4,299)
Unrealized losses on equity securities	(2,078)
Net realized gain (losses)	(2,477)	564
Total realized gains, Fair Value at Sale	25,816	736,369
Total realized losses, Fair Value at Sale	63,811	68,160
Net realized gain (losses), Fair Value at Sale	89,627	804,529
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total realized gains	85	2,732
Total realized losses	(249)	(363)
Total realized gains, Fair Value at Sale	25,647	705,138
Total realized losses, Fair Value at Sale	58,971	56,354
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total realized gains	1	2,131
Total realized losses	(236)	(3,936)
Total realized gains, Fair Value at Sale	169	31,231
Total realized losses, Fair Value at Sale	$ 4,840	$ 11,806

Investments - Schedule of Rea_2

Investments - Schedule of Realized Gains and Losses from Investments Include Sales of Securities and Unrealized Gains and Losses (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Investments Debt And Equity Securities [Abstract]
Net losses recognized during the period on equity securities	$ (2,314)
Less: Net losses (gains) recognized from equity securities sold	236
Net unrealized (losses) gains on equity investments	$ (2,078)

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Equity securities, cost	$ 18,698,000	$ 17,548,000
Equity securities, gross unrealized appreciation		137,833
Equity securities, gross unrealized depreciation		(535,428)
Fair value of equity securities	$ 16,456,000	17,217,000
Equity securities, unrealized depreciation, net		$ 397,595

Investments - Summary of Net In

Investments - Summary of Net Investment Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Gross investment income (loss)	$ 15,394	$ 13,447	$ 10,911
Investment expenses	2,114	2,115	1,730
Net investment income, less investment expenses	13,280	11,332	9,181
Debt Securities Available-for-Sale [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income (loss)	9,591	10,368	8,709
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income (loss)	1,333	1,922	1,955
Cash and Cash Equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income (loss)	1,703	960	226
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income (loss)	$ 2,767	$ 197	$ 21,000

Investments - Schedule of Deb_2

Investments - Schedule of Debt Securities Available-for-Sale in an Unrealized Loss Position, Aggregate Fair Value (Detail) $ in Thousands	Dec. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)Security
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	404	724
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 3,164	$ 1,862
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 172,381	$ 295,321
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	690	270
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 5,955	$ 2,107
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 241,126	$ 101,005
U.S. government and agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	17	53
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 129	$ 284
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 10,485	$ 20,053
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	66	24
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 609	$ 289
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 20,488	$ 9,294
States, Municipalities and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	13	51
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 103	$ 359
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 12,864	$ 49,803
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	42	8
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 682	$ 210
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 39,979	$ 10,503
Industrial and Miscellaneous [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	214	284
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 1,479	$ 376
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 70,156	$ 87,898
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	232	38
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 1,822	$ 256
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 70,375	$ 11,788
Special Revenue [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	105	295
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 1,260	$ 777
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 76,335	$ 133,580
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	323	183
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 2,621	$ 1,347
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 108,319	$ 69,359
Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Debt Securities Available-for-sale Less Than Twelve Months, Number of Securities | Security	55	41
Debt Securities Available-for-sale Less Than Twelve Months, Gross Unrealized Losses	$ 193	$ 66
Debt Securities Available-for-sale Less Than Twelve Months, Fair Value	$ 2,541	$ 3,987
Debt Securities Available-for-sale Twelve Months or More, Number of Securities | Security	27	17
Debt Securities Available-for-sale Twelve Months or More, Gross Unrealized Losses	$ 221	$ 5
Debt Securities Available-for-sale Twelve Months or More, Fair Value	$ 1,965	$ 61

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 152,459	$ 152,459	$ 46,454
Intangibles, net	76,850	101,626
Indefinite lived intangible, insurance licenses	1,300	1,300
Amortization of intangible assets	$ 24,800	$ 6,200
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets useful lives	1 year
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Finite-lived intangible assets useful lives	15 years

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 46,454
Goodwill acquired	106,005
Ending balance	$ 152,459

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Schedule of Amortizing and Non-amortizing Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible assets, Gross Carrying Amount		$ 113,970	$ 113,970
Amortizing intangible assets, Accumulated Amortization		(38,435)	(13,659)
Intangible Assets, net	[1]	$ 75,535	$ 100,311
Brand [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		8 years	14 years
Amortizing intangible assets, Gross Carrying Amount		$ 17,810	$ 1,210
Amortizing intangible assets, Accumulated Amortization		(3,319)	(195)
Intangible Assets, net	[1]	$ 14,491	$ 1,015
Agent Relationships [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		9 years	10 years
Amortizing intangible assets, Gross Carrying Amount		$ 15,500	$ 15,500
Amortizing intangible assets, Accumulated Amortization		(2,259)	(789)
Intangible Assets, net	[1]	$ 13,241	$ 14,711
Renewal Rights [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		14 years	15 years
Amortizing intangible assets, Gross Carrying Amount		$ 40,600	$ 57,200
Amortizing intangible assets, Accumulated Amortization		(2,932)	(2,162)
Intangible Assets, net	[1]	$ 37,668	$ 55,038
Customer Relations [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		7 years	8 years
Amortizing intangible assets, Gross Carrying Amount		$ 870	$ 870
Amortizing intangible assets, Accumulated Amortization		(297)	(211)
Intangible Assets, net	[1]	$ 573	$ 659
Trade Names [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		8 years	10 years
Amortizing intangible assets, Gross Carrying Amount		$ 9,000	$ 9,000
Amortizing intangible assets, Accumulated Amortization		(1,308)	(408)
Intangible Assets, net	[1]	$ 7,692	$ 8,592
Value of Business Acquired [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		1 year	1 year
Amortizing intangible assets, Gross Carrying Amount		$ 25,400	$ 25,400
Amortizing intangible assets, Accumulated Amortization		$ (25,400)	(9,083)
Intangible Assets, net	[1]		$ 16,317
Non-compete [Member]
Schedule of Finite-Lived and Indefinite-Lived Assets [Line Items]
Amortizing intangible aseets, Weighted - average Amortization (years)		1 year	2 years
Amortizing intangible assets, Gross Carrying Amount		$ 4,790	$ 4,790
Amortizing intangible assets, Accumulated Amortization		(2,920)	(811)
Intangible Assets, net	[1]	$ 1,870	$ 3,979
[1]	Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized.

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Schedule of Finite-lived Intangible Assets (Parenthetical) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Indefinite lived intangible, insurance license	$ 1.3	$ 1.3

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Schedule of Estimated Amortization of Intangible Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
2019		$ 8,208
2020		6,365
2021		6,351
2022		6,351
2023		6,351
Thereafter		41,909
Intangible Assets, net	[1]	$ 75,535	$ 100,311
[1]	Excludes insurance license valued at $1.3 million and classified as an indefinite lived intangible which is subject to annual impairment testing and not amortized.

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Computation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings (loss) per share:
Net income (loss) attributable to common stockholders (000's)									$ 27,155	$ (1,119)	$ 33,865
Weighted average shares outstanding									25,941,253	26,798,465	29,632,171
Basic earnings (loss) per share:	$ 0.15	$ 0.23	$ 0.09	$ 0.58	$ (0.18)	$ (0.34)	$ 0.23	$ 0.21	$ 1.05	$ (0.04)	$ 1.14
Diluted earnings (loss) per share:
Net income (loss) attributable to common stockholders (000's)									$ 27,155	$ (1,119)	$ 33,865
Weighted average dilutive shares									154,621		2,178
Total weighted average dilutive shares									26,095,874	26,798,465	29,634,349
Diluted earnings (loss) per share:	$ 0.15	$ 0.23	$ 0.09	$ 0.55	$ (0.18)	$ (0.34)	$ 0.23	$ 0.21	$ 1.04	$ (0.04)	$ 1.14

Earnings (Loss) Per Share - Add

Earnings (Loss) Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Number of antidilutive shares	2,563,777	8,424,598	2,049,923

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value Measurements (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	$ 509,649	$ 549,796
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	4,861	359
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	504,788	549,437
U.S. government and agency securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	48,041	38,880
U.S. government and agency securities [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	354	359
U.S. government and agency securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	47,687	38,521
States, Municipalities and Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	59,289	76,411
States, Municipalities and Political Subdivisions [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	59,289	76,411
Special Revenue [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	245,355	267,677
Special Revenue [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	245,355	267,677
Industrial and Miscellaneous [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	152,457	162,128
Industrial and Miscellaneous [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	152,457	162,128
Redeemable Preferred Stocks [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	4,507	4,700
Redeemable Preferred Stocks [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	$ 4,507
Redeemable Preferred Stocks [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities		$ 4,700

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value measurement period	1 year
Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-recurring fair value adjustments	$ 0	$ 0	$ 0

Other Comprehensive Income - Su

Other Comprehensive Income - Summary of Other Comprehensive Income (Loss) and Tax Impact of Each Component of Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other comprehensive income
Change in unrealized losses on investments, net, Pre-tax	$ (5,700)	$ 5,688	$ (3,120)
Reclassification adjustment of realized losses (gains) included in net income, Pre-tax	163	(564)	(1,733)
Effect on other comprehensive income, Pre-tax	(5,537)	5,124	(4,853)
Change in unrealized losses on investments, net, Tax	2,281	(2,713)	2,561
Reclassification adjustment of realized losses (gains) included in net income, Tax	(49)	(457)	(693)
Effect on other comprehensive income, Tax	2,232	(3,170)	1,868
Change in unrealized losses on investments, net, After-tax	(3,419)	2,975	(559)
Reclassification adjustment of realized losses (gains) included in net income, After-tax	114	(1,021)	(2,426)
Effect on other comprehensive income, After-tax	$ (3,305)	$ 1,954	$ (2,985)

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total, at cost	$ 25,601	$ 24,057
Less: accumulated depreciation and amortization	(7,603)	(5,309)
Property and equipment, net	17,998	18,748
Land [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	2,582	2,582
Building [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	11,390	12,148
Computer Hardware and Software [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	4,901	4,093
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	1,397	759
Tenant and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	4,477	3,660
Vehicle Fleet [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	$ 854	$ 815

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)aft²Building	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Property Plant And Equipment Useful Life And Values [Abstract]
Depreciation and amortization expense | $	$ 2.3	$ 1.6	$ 1.6
Number of acres of land purchased | a	15
Number of buildings | Building	5
Gross area of acquired property | ft²	229,000

Property and Equipment - Sche_2

Property and Equipment - Schedule of Expected Annual Rental Income Due Under Non-Cancellable Operating Leases for Real Estate Properties (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Property Plant And Equipment [Abstract]
January 1 to December 31, 2019	$ 2,698
January 1 to December 31, 2020	2,758
January 1 to December 31, 2021	2,818
January 1 to December 31, 2022	2,874
January 1 to December 31, 2023	1,902
Thereafter	506
Total rental income due under non-cancellable operating leases	$ 13,556

Deferred Policy Acquisition C_3

Deferred Policy Acquisition Costs - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Policy Acquisition Costs [Member]
Deferred Policy Acquisition Costs [Line Items]
Deferred reinsurance ceding commissions, percentage	75.00%
Ceding commission income	$ 55,000,000	$ 8,600,000
General and Administrative Expenses [Member]
Deferred Policy Acquisition Costs [Line Items]
Deferred reinsurance ceding commissions, percentage	25.00%
Ceding commission income	$ 18,100,000	$ 0

Deferred Policy Acquisition C_4

Deferred Policy Acquisition Costs - Schedule of Activity DPCC (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Insurance [Abstract]
Beginning balance of deferred ceding commission income	$ 51,109	$ 57,808
Ceding commission deferred	68,044	1,901
Less: ceding commission earned	(74,157)	(8,600)
Ending balance of deferred ceding commission income	$ 44,996	$ 51,109

Deferred Policy Acquisition C_5

Deferred Policy Acquisition Costs - Summary of Activity in Deferred Policy Acquisition Costs (DPAC) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Insurance [Abstract]
Beginning Balance	$ 41,678	$ 42,779
Policy acquisition costs deferred	171,007	82,791
Amortization	(139,630)	(83,892)
Ending Balance	$ 73,055	$ 41,678

Reinsurance - Additional inform

Reinsurance - Additional information (Detail)

Dec. 31, 2018USD ($)Reinsurer

Feb. 29, 2016USD ($)

May 31, 2017USD ($)

Mar. 31, 2017USD ($)

Apr. 30, 2015USD ($)

Jun. 30, 2017USD ($)Reinsurer

May 31, 2018

Dec. 31, 2018USD ($)

Dec. 31, 2018USD ($)ReinsurerLayer

Dec. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Dec. 31, 2015USD ($)

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 472,144,000

$ 263,740,000

$ 228,797,000

Reinsurance payable

$ 166,975,000

$ 166,975,000

166,975,000

17,577,000

Prepaid reinsurance premiums

233,071,000

233,071,000

233,071,000

227,764,000

Net of prepaid reinsurance premium as attachment point

317,930,000

317,930,000

$ 317,930,000

357,357,000

Number of reinstatements available | Reinsurer

2

Unpaid losses and loss adjustment expenses

432,359,000

432,359,000

$ 432,359,000

470,083,000

140,137,000

$ 83,722,000

Aggregate participation, losses and loss adjustment expenses

13,345,000

$ 12,567,000

$ 18,791,000

Reduction in reinsurance reinstatement net retention amount

$ 618,355,000

Reinsurer Concentration Risk [Member] | Reinsurance Recoverable Including Reinsurance Premium Paid [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Concentration risk percentage

10.00%

Insurance Claims [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Unpaid losses and loss adjustment expenses

1,000,000

1,000,000

$ 1,000,000

Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Notes maturity period

90 days

Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

$ 27,000,000

$ 27,000,000

$ 27,000,000

Coverage limit

9,000,000

NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,000,000,000

Aggregate contract coverage limit

13,500,000

Primary retention

18,500,000

Franchise deductible amount

$ 1,000,000

Aggregate contract expiration date

May 31, 2018

Percentage of aggregate contract

25.00%

25.00%

25.00%

Hartford Steam Boiler [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

100.00%

Heritage P&C [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

20.00%

Primary retention

$ 16,000,000

Primary retention

$ 20,000,000

$ 20,000,000

20,000,000

Primary retention

16,000,000

Agreement of coverage

3 years

3 years

Additional maturity period of collateral notes

2 years

2 years

Reinsurance agreement

3 years

3 years

Heritage P&C [Member] | States Other Than Hawaii [Member] | Notes Due March 2020 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 35,000,000

Heritage P&C [Member] | States Other Than Hawaii [Member] | Notes Due February 2019 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 250,000,000

Heritage P&C [Member] | States Other Than Hawaii [Member] | Class D Notes Due February 2019 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

150,000,000

Heritage P&C [Member] | States Other Than Hawaii [Member] | Class E Notes Due February 2019 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 100,000,000

Heritage P&C [Member] | States Other Than Hawaii [Member] | Two Thousand Fifteen Class B And C Notes [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Agreement of coverage

3 years

Heritage P&C [Member] | States Other Than Hawaii [Member] | Class B Notes Due April 2017 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 97,500,000

Heritage P&C [Member] | States Other Than Hawaii [Member] | Class C Notes Due April 2017 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

30,000,000

Heritage P&C [Member] | Top and Aggregate Layer [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

15,000,000

15,000,000

15,000,000

Aggregate participation, losses and loss adjustment expenses

5,000,000

Heritage P&C [Member] | Maximum [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate participation, losses and loss adjustment expenses

36,000,000

Zephyr [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

16,000,000

Primary retention

20,000,000

20,000,000

20,000,000

Primary retention

16,000,000

Zephyr [Member] | Top and Aggregate Layer [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

15,000,000

15,000,000

15,000,000

Aggregate participation, losses and loss adjustment expenses

5,000,000

Heritage P&C and Zephyr [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 2,600,000,000

Primary retention

20,000,000

20,000,000

20,000,000

Number of reinstatements available | Reinsurer

2

Heritage P&C and Zephyr [Member] | Florida [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 1,750,000,000

Heritage P&C and Zephyr [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 731,000,000

2018 - 2019 Reinsurance Program [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance purchase limit

3,400,000,000

3,400,000,000

3,400,000,000

Purchase of reinsurance from third party

3,500,000,000

Reinsurance payable

252,000,000

$ 252,000,000

$ 252,000,000

FHCF [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

45.00%

Gross Quota Share [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage of gross quota share

18.75%

8.00%

18.75%

Reinsurance recoveries on paid losses

$ 1,000,000,000

$ 1,000,000,000

$ 1,000,000,000

Net Quota Share Reinsurance [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Net lines quota share occurrence limit

$ 20,000,000

Percentage of ceded net premium and losses

49.50%

49.50%

49.50%

8.00%

Percentage of renewed ceded net premium and losses

52.00%

52.00%

52.00%

10.00%

42.50% Aggregate Coverage [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate contract coverage limit

$ 20,000,000

Primary retention

3,000,000

Franchise deductible amount

$ 1,500,000

Aggregate contract expiration date

Dec. 31, 2018

Percentage of aggregate contract

42.50%

42.50%

42.50%

92.00% Aggregate Coverage [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate contract coverage limit

$ 20,000,000

Primary retention

$ 20,000,000

Aggregate contract expiration date

Dec. 31, 2018

Percentage of aggregate contract

92.00%

92.00%

92.00%

40.00% Aggregate Coverage [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate contract coverage limit

$ 20,000,000

Primary retention

20,000,000

Franchise deductible amount

$ 1,000,000

Aggregate contract expiration date

May 31, 2019

Percentage of aggregate contract

40.00%

40.00%

40.00%

100.00% Aggregate Coverage [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate contract coverage limit

$ 20,000,000

Primary retention

$ 20,000,000

Number of reinstatements available | Reinsurer

1

Aggregate contract expiration date

Dec. 31, 2019

Percentage of aggregate contract

100.00%

100.00%

100.00%

Facultative Reinsurance [Member] | Maximum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

$ 10,000,000

$ 10,000,000

$ 10,000,000

Facultative Reinsurance [Member] | Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Facultative reinsurance purchase amount

10,000,000

Facultative Reinsurance [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance loss limit

2,500,000

Facultative Reinsurance [Member] | NBIC [Member] | Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

3,500,000

3,500,000

3,500,000

General Excess of Loss 2018-2019 Reinsurance Program [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 300,000

Number of loss applied to reinsurance contract | Reinsurer

1

Number of layers in excess of rentention loss | Layer

2

General Excess of Loss 2018-2019 Reinsurance Program [Member] | NBIC [Member] | First Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 450,000

Primary retention

300,000

General Excess of Loss 2018-2019 Reinsurance Program [Member] | NBIC [Member] | Second Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

2,750,000

Primary retention

750,000

General Excess of Loss 2018-2019 Reinsurance Program [Member] | NBIC [Member] | Casualty Second Layer [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,250,000

Primary retention

$ 750,000

General Excess of Loss 2018-2019 Reinsurance Program [Member] | NBIC [Member] | First and Second Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage of gross quota share

92.00%

Additional coverage percentage of gross quota share

8.00%

Facultative 2018 - 2019 Reinsurance Program [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance loss limit

$ 3,750,000

Facultative 2018 - 2019 Reinsurance Program [Member] | NBIC [Member] | Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

3,500,000

3,500,000

3,500,000

FHCF Layer [Member] | Heritage P&C [Member] | Property Per Risk Coverage [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 414,000,000

Percentage of maximum provisional limit

45.00%

Estimated provisional limit percentage calculation base amount

$ 1,300,000,000

FHCF Layer [Member] | Heritage P&C and Zephyr [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

45.00%

Shared Layers [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 372,000,000

Shared coverage amount available subject to seasonal aggregate

20,000,000

Seasonal aggregate amount

68,000,000

Shared Layers [Member] | Property Per Risk Coverage [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

372,000,000

Shared coverage amount available subject to seasonal aggregate

20,000,000

Seasonal aggregate amount

68,000,000

Shared Layers [Member] | Heritage P&C and Zephyr [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

352,000,000

Shared Layers [Member] | Heritage P&C and Zephyr [Member] | Property Per Risk Coverage [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

352,000,000

Layers Above FHCF -Florida Program [Member] | Heritage P&C [Member] | States Other Than Hawaii [Member] | 2017-1 Notes [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 125,000,000

Agreement of coverage

3 years

Additional maturity period of collateral notes

2 years

Reinsurance agreement

3 years

Layers Above FHCF -Florida Program [Member] | Heritage P&C [Member] | States Other Than Hawaii [Member] | Class A Notes Due April Two Thousand Seventeen [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

$ 150,000,000

Agreement of coverage

3 years

Additional maturity period of collateral notes

2 years

Reinsurance agreement

3 years

Top Hawaii Only Layer [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 26,000,000

2017 - 2018 Reinsurance Program [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Number of reinstatements available | Reinsurer

2

2017 - 2018 Reinsurance Program [Member] | Insurance Claims [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Unpaid losses and loss adjustment expenses

1,000,000

1,000,000

$ 1,000,000

2017 - 2018 Reinsurance Program [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

$ 27,000,000

$ 27,000,000

27,000,000

Coverage limit

$ 9,000,000

2017 - 2018 Reinsurance Program [Member] | Citrus Re Ltd [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

26.00%

Purchase of reinsurance from third party

$ 687,500,000

Coverage arrangements, period

multi-year

2017 - 2018 Reinsurance Program [Member] | Citrus Re Ltd [Member] | Class A and B and C Due in May 2018 [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 277,500,000

Notes maturity date

May 31, 2018

2017 - 2018 Reinsurance Program [Member] | Citrus Re Ltd [Member] | Class D and E Due in Two-year Period [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 250,000,000

Additional maturity period of collateral notes

2 years

2017 - 2018 Reinsurance Program [Member] | Citrus Re Ltd [Member] | Notes Due in Three-year Period [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 160,000,000

Notes maturity period

3 years

Net Quota Share [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Net lines quota share occurrence limit

$ 20,000,000

Percentage of ceded net premium and losses

60.00%

Percentage of renewed ceded net premium and losses

49.50%

49.50%

49.50%

8.00%

General Excess of Loss [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 300,000

Number of loss applied to reinsurance contract | Reinsurer

1

Number of layers in excess of rentention loss | Layer

2

General Excess of Loss [Member] | NBIC [Member] | First Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 450,000

Primary retention

300,000

General Excess of Loss [Member] | NBIC [Member] | Second Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

2,750,000

Primary retention

750,000

General Excess of Loss [Member] | NBIC [Member] | Casualty Second Layer [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,250,000

Primary retention

$ 750,000

General Excess of Loss [Member] | NBIC [Member] | First and Second Layer Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage of gross quota share

81.25%

Additional coverage percentage of gross quota share

18.75%

Umbrella Facultative Reinsurance [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage of quota share

90.00%

Additional percentage of quota share

100.00%

Umbrella Facultative Reinsurance [Member] | NBIC [Member] | Maximum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Limits of liability

$ 1,000,000

$ 1,000,000

$ 1,000,000

Additional limits of liability

4,000,000

4,000,000

4,000,000

Catastrophe [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance purchase limit

632,000,000

632,000,000

632,000,000

Catastrophe [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,300,000

1,300,000

1,300,000

Catastrophe [Member] | Citrus [Member] | Property Per Risk Coverage [Member] | States Other Than Hawaii [Member] | Two Thousand Fifteen C And C Series Bond And Two Thousand Sixteen D and E Bond And Two Thousand Seventeen Two Bond [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Collateralized by a reinsurance trust

412,500,000

412,500,000

412,500,000

Additional coverage of second catastrophe reinsurance agreement

$ 5,000,000

Catastrophe [Member] | 2018 - 2019 Reinsurance Program [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance premium, amortization period

12 months

Catastrophe [Member] | Aggregate Coverage [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

$ 700,000,000

Prepaid reinsurance premiums

632,000,000

632,000,000

632,000,000

Catastrophe [Member] | Aggregate Coverage [Member] | Heritage P&C [Member] | Property Per Risk Coverage [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

984,000,000

Prepaid reinsurance premiums

606,000,000

606,000,000

606,000,000

Net of prepaid reinsurance premium as attachment point

40,000,000

40,000,000

40,000,000

Catastrophe [Member] | Aggregate Coverage [Member] | Heritage P&C and Zephyr [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

1,100,000,000

Prepaid reinsurance premiums

669,000,000

669,000,000

669,000,000

Net of prepaid reinsurance premium as attachment point

40,000,000

40,000,000

40,000,000

Catastrophe [Member] | Multi-Zonal Layers [Member] | Heritage P&C [Member] | Property Per Risk Coverage [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Coverage of first catastrophe reinsurance agreement

254,000,000

Catastrophe [Member] | Multi-Zonal Layers [Member] | Zephyr [Member] | Property Per Risk Coverage [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Prepaid reinsurance premiums

254,000,000

254,000,000

254,000,000

Coverage of first catastrophe reinsurance agreement

302,000,000

Catastrophe [Member] | Multi-Zonal Layers [Member] | Zephyr [Member] | Property Per Risk Coverage [Member] | Florida [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

254,000,000

Catastrophe [Member] | Multi-Zonal Layers [Member] | Zephyr [Member] | Property Per Risk Coverage [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

254,000,000

Catastrophe [Member] | A Top And Aggregate Multi Zonal Layer [Member] | Zephyr [Member] | Property Per Risk Coverage [Member] | Florida [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

48,000,000

Catastrophe [Member] | A Top And Aggregate Multi Zonal Layer [Member] | Zephyr [Member] | Property Per Risk Coverage [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchased reinstatement premium

48,000,000

Catastrophe [Member] | 2017 - 2018 Reinsurance Program [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Purchase of reinsurance from third party

$ 2,600,000,000

Description of hurricane losses coverage and protection

Hurricane losses in states other than Hawaii would be covered under the Heritage P&C program with the exception of the FHCF coverage and the series 2015, 2016 and 2017 catastrophe bonds. Management deemed this reinsurance protection to be sufficient given the level of catastrophe exposure in 2017 for Alabama, Georgia, North Carolina and South Carolina.

Catastrophe [Member] | 2017 - 2018 Reinsurance Program [Member] | Property Per Risk Coverage [Member] | Florida [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Unpaid losses and loss adjustment expenses

1,750,000,000

1,750,000,000

$ 1,750,000,000

Catastrophe [Member] | 2017 - 2018 Reinsurance Program [Member] | Property Per Risk Coverage [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Unpaid losses and loss adjustment expenses

731,000,000

731,000,000

$ 731,000,000

Quota Share [Member] | 2018 - 2019 Reinsurance Program [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance premium, amortization period

12 months

First Catastrophic Event [Member] | Heritage P&C [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

20.00%

Primary retention

878,000,000

878,000,000

$ 878,000,000

First Catastrophic Event [Member] | Heritage P&C [Member] | Maximum [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate participation, losses and loss adjustment expenses

$ 727,000

First Catastrophic Event [Member] | Zephyr [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

3.80%

Primary retention

386,000,000

386,000,000

$ 386,000,000

First Catastrophic Event [Member] | Zephyr [Member] | Maximum [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate participation, losses and loss adjustment expenses

12,000,000

First Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,000,000,000

Primary retention

12,800,000

12,800,000

12,800,000

First Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | Heritage P&C [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

1,600,000,000

Primary retention

20,000,000

20,000,000

20,000,000

First Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | Zephyr [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

801,000,000

Primary retention

20,000,000

20,000,000

$ 20,000,000

Second Catastrophic Event [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Number reinsurance reinstatement provisions | Reinsurer

1

Percentage of reinsurance reinstatement provisions premium

100.00%

Second Catastrophic Event [Member] | Heritage P&C [Member] | States Other Than Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

11.50%

Primary retention

420,000,000

420,000,000

$ 420,000,000

Second Catastrophic Event [Member] | Zephyr [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage comprising aggregate participation

117.70%

Primary retention

386,000,000

386,000,000

$ 386,000,000

Second Catastrophic Event [Member] | Zephyr [Member] | Maximum [Member] | Hawaii [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Aggregate participation, losses and loss adjustment expenses

56,000,000

Second Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

8,800,000

Second Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | Heritage P&C [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

16,000,000

Second Catastrophic Event [Member] | 2018 - 2019 Reinsurance Program [Member] | Zephyr [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Primary retention

$ 16,000,000

Second Catastrophic Event [Member] | Gross Quota Share [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Percentage of gross quota share

81.25%

Percentage of remaining gross quota share

18.75%

Second Catastrophic Event [Member] | Net Quota Share [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reduction in reinsurance reinstatement net retention amount

$ 20,000,000

Aggregate Excess For All Catastrophe Losses Excluding Named Tropical Storms [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

20,000,000

20,000,000

20,000,000

Aggregate Excess For All Catastrophe Losses Excluding Named Tropical Storms [Member] | NBIC [Member] | Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Limit of aggregate losses under aggregate contract

21,500,000

Named Tropical Storm Losses [Member] | NBIC [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance payable

$ 12,000,000

$ 12,000,000

12,000,000

Named Tropical Storm Losses [Member] | NBIC [Member] | Minimum [Member]

Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]

Reinsurance loss limit

$ 8,000,000

Reinsurance - Schedule of Effec

Reinsurance - Schedule of Effect of Reinsurance Arrangements in Consolidated Statement of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Premiums Written
Premiums Written, Direct									$ 923,349
Premiums Written, Ceded									(477,451)
Premiums Written, Net									445,898
Premiums Earned
Premiums Earned, Direct									926,326
Premiums Earned, Ceded									(472,144)	$ (263,740)	$ (228,797)
Net premiums earned	$ 118,632	$ 118,238	$ 111,204	$ 106,108	$ 101,728	$ 95,208	$ 90,452	$ 92,176	454,182	379,564	411,721
Losses and Loss Adjustment Expenses
Losses and Loss Adjustment Expenses, Direct									855,780
Losses and Loss Adjustment Expenses, Ceded									(618,355)
Losses and Loss Adjustment Expenses, Net									$ 237,425	$ 201,482	$ 238,862

Reserve for Unpaid Losses - Sum

Reserve for Unpaid Losses - Summary of Reserve for Unpaid Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Insurance [Abstract]
Balance, beginning of period	$ 470,083	$ 140,137	$ 83,722
Less: reinsurance recoverable on unpaid losses	315,353	589
Less: reinsurance recoverable on unpaid losses		586	0
Net balance, beginning of period	154,730	139,548
Net balance, beginning of period		139,551	83,722
Incurred related to:
Current year	224,080	188,914	220,071
Prior years	13,345	12,567	18,791
Total incurred	237,425	201,481	238,862
Paid related to:
Current year	104,368	114,344	120,626
Prior years	105,935	107,479	62,407
Total paid	210,303	221,823	183,033
Total unpaid claims assumed from acquisitions		35,524
Net balance, end of period	181,852	154,730	139,548
Net balance, end of period			139,551
Plus: reinsurance recoverable on unpaid losses	250,507	315,353	589
Plus: reinsurance recoverable on unpaid losses			586
Balance, end of period	$ 432,359	$ 470,083	$ 140,137

Reserve for Unpaid Losses - Add

Reserve for Unpaid Losses - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Liability For Claims And Claims Adjustment Expense [Line Items]
Losses incurred related to the prior year (redundancy) and development	$ 13,345	$ 12,567	$ 18,791
Hurricane Claims [Member]
Liability For Claims And Claims Adjustment Expense [Line Items]
Losses incurred related to the prior year (redundancy) and development		$ 6,500

Reserve for Unpaid Losses - S_2

Reserve for Unpaid Losses - Summary of Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance (Detail) $ in Thousands	Dec. 31, 2018USD ($)Claim	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 1,135,621
Net IBNR Reserves	126,095
Accident Year 2012 And Prior [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	106,446	$ 106,654	$ 106,331	$ 106,493	$ 107,842	$ 105,765	$ 102,723
Net IBNR Reserves	$ 56
Reported Claims | Claim	53,348
Accident Year 2013 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 62,378	62,354	62,166	62,969	61,483	$ 61,157
Net IBNR Reserves	$ 488
Reported Claims | Claim	13,085
Accident Year 2014 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 115,838	114,984	113,847	114,899	$ 118,991
Net IBNR Reserves	$ 1,731
Reported Claims | Claim	18,430
Accident Year 2015 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 205,164	203,792	197,744	$ 179,255
Net IBNR Reserves	$ 5,941
Reported Claims | Claim	25,952
Accident Year 2016 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 250,990	242,611	$ 237,207
Net IBNR Reserves	$ 10,844
Reported Claims | Claim	27,245
Accident Year 2017 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 195,240	$ 189,163
Net IBNR Reserves	$ 18,243
Reported Claims | Claim	66,739
Accident Year 2018 [Member]
Claims Development [Line Items]
Incurred Loss and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 199,565
Net IBNR Reserves	$ 88,792
Reported Claims | Claim	28,939

Reserve for Unpaid Losses - S_3

Reserve for Unpaid Losses - Summary of Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 959,776
Accident Year 2012 And Prior [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	105,875	$ 105,053	$ 104,362	$ 104,093	$ 102,750	$ 101,323	$ 92,909
Accident Year 2013 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	60,581	59,395	57,647	55,589	50,716	$ 35,771
Accident Year 2014 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	112,518	108,509	101,456	95,076	$ 68,732
Accident Year 2015 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	192,967	181,672	162,654	$ 103,918
Accident Year 2016 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	233,540	211,512	$ 132,679
Accident Year 2017 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	169,743	$ 103,148
Accident Year 2018 [Member]
Claims Development [Line Items]
Cumulative Paid Losses and Allocated Loss Adjustment Expenses, Net of Reinsurance	$ 84,552

Reserve for Unpaid Losses - S_4

Reserve for Unpaid Losses - Summary of Reconciliation of Reserve Balances to Liability for Unpaid Loss and Loss Adjustment Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Insurance [Abstract]
Unpaid Loss and Allocated Loss Adjustment Expense, Net of Reinsurance	$ 175,845
Ceded Unpaid Loss and Allocated Loss Adjustment Expense	250,507	$ 315,353	$ 589
Unpaid Unallocated Loss Adjustment Expense	6,007
Unpaid losses and loss adjustment expenses	$ 432,359	$ 470,083	$ 140,137	$ 83,722

Reserve for Unpaid Losses - S_5

Reserve for Unpaid Losses - Summary of Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (Detail)	Dec. 31, 2018
Insurance [Abstract]
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Year - 1	57.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Year - 2	29.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Year - 3	5.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Year - 4	3.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Year - 5	3.00%
Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance Thereafter	3.00%

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	Feb. 19, 2019	Dec. 14, 2018	Dec. 31, 2018	Nov. 30, 2018	Oct. 31, 2018	Apr. 30, 2018	Nov. 30, 2017	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2019	Feb. 25, 2019	Jan. 31, 2019	Aug. 31, 2018	Sep. 30, 2017	Aug. 31, 2017	Dec. 15, 2016
Debt Instrument [Line Items]
Long-term debt			$ 155,757,000						$ 155,757,000	$ 155,757,000	$ 207,782,000
Long-term debt, net			148,794,000						148,794,000	148,794,000	184,405,000
Loss on repurchase of convertible notes										(9,790,000)	(1,203,000)
Convertible notes converted into common stock										53,044,000
Payout dividends, aggregate amount										$ 6,380,000	8,249,000	$ 6,806,000
Federal Home Loan Bank Of Atlanta [Member]
Debt Instrument [Line Items]
Frequency of periodic interest payments										quarterly
Notes maturity date				Dec. 13, 2023
Estimated fair value of collateral with FHLB				$ 31,000,000
Cash loan received under advance from FHLB				$ 19,200,000
FHLB advance Interest rate				3.094%
Required fair value of reinvestment in FHLB common stock.			1,400,000						1,400,000	$ 1,400,000
Commencement of interest payable date				2019-03
Minimum [Member]
Debt Instrument [Line Items]
Notes maturity period										90 days
Maximum [Member]
Debt Instrument [Line Items]
Payout dividends, aggregate amount										$ 10,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt			20,000,000						20,000,000	20,000,000
Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term debt			75,000,000						75,000,000	75,000,000
Mortgage Loan [Member]
Debt Instrument [Line Items]
Long-term debt			12,394,000						12,394,000	12,394,000	12,658,000
Subsequent Event [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt														$ 20,000,000
Heritage Insurance Holdings, Inc. [Member]
Debt Instrument [Line Items]
Long-term debt, net			$ 167,308,000						167,308,000	167,308,000
Payout dividends, aggregate amount										6,380,000	8,249,000	$ 6,806,000
Convertible Note [Member]
Debt Instrument [Line Items]
Embedded derivative converted to equity, liability							$ 6,200,000
Repurchase of convertible notes					$ 3,100,000	$ 10,600,000
Repurchase of convertible notes, cost					3,600,000	13,400,000
Non-operating loss extinguishment of debt						$ 383,000	1,200,000
Repurchase of convertible notes, retired																$ 10,600,000
Reduction of debt							17,700,000
Additional paid-in capital adjustment for conversion of convertible debt										53,000,000
Convertible Note [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repurchase of convertible notes	$ 5,800,000
Repurchase of convertible notes, cost	$ 2,900,000
Repurchase of convertible notes, retired															$ 3,100,000
Convertible Note [Member] | Heritage Insurance Holdings, Inc. [Member]
Debt Instrument [Line Items]
Shares issued for consideration of repurchase debt			3,595,452
Repurchase of convertible notes			$ 72,700,000						$ 72,700,000	72,700,000
Cash consideration paid for repurchase of debt			35,900,000
Debt conversion, as part of repurchase			53,000,000
Reduction in debt discount liability			$ 6,200,000
Convertible Note [Member] | Heritage Insurance Holdings, Inc. [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Shares issued for consideration of repurchase debt	285,201
Repurchase of convertible notes	$ 5,800,000
Cash consideration paid for repurchase of debt	2,900,000
Convertible notes converted into common stock	$ 4,200,000
Convertible Note [Member] | Heritage P&C [Member]
Debt Instrument [Line Items]
Repurchase of convertible notes							21,100,000
Repurchase of convertible notes, cost							$ 25,200,000
Convertible Note [Member] | Non-Operating Loss [Member]
Debt Instrument [Line Items]
Loss on repurchase of convertible notes					$ (73,000)
Convertible Note [Member] | Non-Operating Loss [Member] | Heritage Insurance Holdings, Inc. [Member]
Debt Instrument [Line Items]
Loss on repurchase of convertible notes										(572,000)
Convertible Option [Member]
Debt Instrument [Line Items]
Extinguishment of allocated portion of convertible debt										$ 26,000,000
Common Stock [Member]
Debt Instrument [Line Items]
Shares issued for consideration of repurchase debt									3,595,452	3,595,452
Additional Paid-In Capital [Member]
Debt Instrument [Line Items]
Convertible notes converted into common stock										$ 53,044,000
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt											79,500,000								$ 79,500,000
Interest rate			8.75%						8.75%	8.75%
Frequency of periodic interest payments										quarterly
Principal payment commencement date										Dec. 14, 2018
Prepaid aggregate principal and unpaid accrued interest		$ 84,100,000
Prepayment penalty and net loss		$ (7,200,000)
Interest Paid										$ 8,800,000	8,000,000
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate																	5.875%	5.875%
Interest Paid										8,100,000
Aggregate principal amount			$ 75,800,000						$ 75,800,000	$ 75,800,000							$ 136,800,000	$ 136,800,000
Notes maturity date										Aug. 1, 2037
Interest payments term										Interest accrues from August 16, 2017 and is payable semi-annually in arrears, on February 1 and August 1 of each year, beginning in 2018.
Payment of principal and interest											0
Long-term debt, net			25,600,000						25,600,000	$ 25,600,000
Issuance and debt discount costs			3,600,000						3,600,000	$ 3,600,000
Debt Instrument redemption price, percentage										100.00%
Change in fair value of long-term debt conversion feature											41,000,000
Convertible Senior Notes [Member] | Additional Paid-In Capital [Member]
Debt Instrument [Line Items]
Embedded derivative converted to equity, liability											51,600,000
Convertible Senior Notes [Member] | August 1, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument redemption price, percentage										100.00%
Convertible Senior Notes [Member] | August 1, 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument redemption price, percentage										100.00%
Convertible Senior Notes [Member] | August 1, 2032 [Member]
Debt Instrument [Line Items]
Debt Instrument redemption price, percentage										100.00%
Collateral Financial Arrangement [Member] | Skye Lane Properties LLC [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Interest rate								4.95%
Frequency of periodic interest payments										monthly
Aggregate principal amount								$ 12,700,000
Notes maturity date							Oct. 30, 2027
Payment of principal and interest										$ 893,000	$ 97,000
Collateral Financial Arrangement [Member] | Skye Lane Properties LLC [Member] | Mortgage Loan [Member] | 5-year Treasury Security [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								3.10%
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		5.875%
Frequency of periodic interest payments										one, two, three or six-month
Aggregate principal amount		$ 79,500,000
Debt instrument, basis spread on variable rate										2.25%
Notes maturity period		5 years
Maximum borrowing capacity		$ 125,000,000
Debt issuance costs		3,200,000
Line of credit facility, description										The net proceeds from the Credit Facilities were used in part (1) to redeem all $79.5 million outstanding aggregate principal amount of the Company’s Senior Notes due 2023 bearing interest at a rate equal to 8.75% per annum plus the three-month average LIBOR, (2) to purchase certain of its outstanding 5.875% Convertible Notes due 2037, and (3) for general corporate purposes
Senior Secured Credit Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		50,000,000	50,000,000						50,000,000	$ 50,000,000
Outstanding borrowing capacity amount			20,000,000						20,000,000	20,000,000
Letters of credit outstanding amount			0						0	0
Senior Secured Credit Facility [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Aggregate principal amount			75,000,000						75,000,000	75,000,000
Maximum borrowing capacity		$ 75,000,000
Senior Secured Credit Facility [Member] | Term Loan Facility [Member] | Scenario, Forecast [Member]
Debt Instrument [Line Items]
Aggregate principal amount													$ 1,900,000
Senior Secured Credit Facility [Member] | Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			5,000,000						5,000,000	5,000,000
Senior Secured Credit Facility [Member] | Swingline Loan [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 10,000,000						$ 10,000,000	$ 10,000,000
Senior Secured Credit Facility [Member] | LIBOR {Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.00%								3.25%
Debt instrument, description of variable rate basis										one month
Senior Secured Credit Facility [Member] | LIBOR {Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		3.25%
Senior Secured Credit Facility [Member] | LIBOR {Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		3.75%
Senior Secured Credit Facility [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.50%
Senior Secured Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.25%
Senior Secured Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.75%
Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Interest rate		8.75%

Long-Term Debt - Schedule of Co

Long-Term Debt - Schedule of Company's Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 15, 2016
Debt Instrument [Line Items]
Principal amount	$ 155,757	$ 207,782
Deferred finance costs	6,963	23,377
Total long-term debt	148,794	184,405
Term Loan Facility [Member]
Debt Instrument [Line Items]
Principal amount	75,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal amount	20,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Principal amount	29,163	115,624
FHLB Loan Agreement [Member]
Debt Instrument [Line Items]
Principal amount	19,200
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Principal amount		79,500	$ 79,500
Mortgage Loan [Member]
Debt Instrument [Line Items]
Principal amount	$ 12,394	$ 12,658

Long-Term Debt - Schedule of Pr

Long-Term Debt - Schedule of Principal Payments on Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt	$ 148,794	$ 184,405
Long-term Debt Agreements [Member]
Debt Instrument [Line Items]
2019	7,777
2020	7,790
2021	7,806
2022	7,822
2023	84,589
Thereafter	39,973
Total long-term debt	$ 155,757

Income Taxes - Summary of Provi

Income Taxes - Summary of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal:
Current	$ 28,891	$ (24,380)	$ 16,575
Deferred	(20,636)	18,383	2,735
Provision for Federal income tax (benefit) expense	8,255	(5,997)	19,310
State:
Current	4,162	(20)	2,893
Deferred	(578)	1,244	335
Provision for State income tax expense	3,584	1,224	3,228
(Benefit) provision for income taxes	$ 11,839	$ (4,773)	$ 22,538

Income Taxes - Summary of U.S.

Income Taxes - Summary of U.S. Federal Income Tax Rate to Pretax Income (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Expected income tax expense at federal rate	21.00%	35.00%	35.00%
State tax expense	5.50%	(22.80%)	3.70%
Permanent items	0.70%	(2.30%)	0.20%
Non-deductible conversion option liability		(255.00%)
Non-deductible stock compensation	2.10%	(26.00%)	0.10%
Tax exempt interest	(1.60%)	27.00%	(2.10%)
Non-deductible acquisition costs	0.40%	(15.20%)	0.20%
Executive compensation 162(m)	4.30%	(11.50%)	1.10%
Political contributions	0.50%	(7.80%)	0.70%
Tax rate change	(2.30%)	362.30%
Other	(0.20%)	(2.70%)	1.10%
Reported income tax expense	30.40%	81.00%	40.00%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax [Line Items]
U.S. federal corporate tax rate	21.00%	35.00%	35.00%
Measurement period, description	The measurement period, as defined in SAB 118 for the Tax Act, begins on the enactment date of the Tax Act and ends when a company has obtained, prepared and analyzed the information that was needed in order to complete the accounting requirements under current accounting guidance. However, under no circumstances will the measurement period extend beyond one year from the enactment date of the Tax Act.
Increase in gross deferred tax assets for loss reserve discounting	$ 702,861
Increase in gross deferred tax liabilities for reserve transition liability	$ 702,861
Operating loss carryforward expiration year	2031
Capital loss carryforward	$ 400,000
Capital loss carryforward expiration year	2023
Goodwill from asset purchases deductible for tax purposes	$ 6,000,000	$ 6,500,000
Non-deductable goodwill	144,400,000	$ 144,400,000
Uncertain tax positions	0
Federal [Member]
Income Tax [Line Items]
Net operating loss carryforwards	450,000
State [Member]
Income Tax [Line Items]
Net operating loss carryforwards	$ 0

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Unearned premiums	$ 12,090	$ 12,488
Unearned commission	10,733	11,987
Net operating loss	109	4,727
Tax-related discount on loss reserve	2,329	1,250
Unrealized loss	2,631
Stock-based compensation	297
Accrued expenses	2,321	1,950
Other	1,443	331
Total deferred tax asset	31,953	32,733
Deferred tax liabilities:
Deferred acquisition costs	17,494	9,775
Prepaid expenses	112	27,568
Unrealized gain		30
Property and equipment	664
Note discount	710	3,818
Basis in purchased investments	163	335
Basis in purchased intangibles	18,982	24,250
Other	1,533	1,290
Total deferred tax liabilities	39,658	67,066
Net deferred tax liability	$ (7,705)	$ (34,333)

Statutory Accounting and Regu_3

Statutory Accounting and Regulations - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 23, 2013
Statutory Accounting Practices [Line Items]
Statutory net income (loss) of insurance subsidiary	$ (64,500,000)	$ 50,600,000
Deposits held	250,000
Statutory capital and surplus				$ 1,000,000
Dividends paid	$ 6,380,000	8,249,000	$ 6,806,000
Reinsurance Policy, Description	Statutory accounting requires a provision for reinsurance liability be established for reinsurance recoverable on paid losses aged over ninety days and for unsecured amounts recoverable from unauthorized reinsurers.
Date of incorporation	Apr. 23, 2013
Maximum [Member]
Statutory Accounting Practices [Line Items]
Dividends paid	$ 10,000,000
Maximum [Member] | Florida [Member]
Statutory Accounting Practices [Line Items]
Permitted dividend rate without prior approval of insurance regulatory authority	10.00%
Maximum [Member] | Rhode Island [Member]
Statutory Accounting Practices [Line Items]
Permitted dividend rate without prior approval of insurance regulatory authority	10.00%
Maximum [Member] | Hawaii [Member]
Statutory Accounting Practices [Line Items]
Permitted dividend rate without prior approval of insurance regulatory authority	10.00%
No Action Level [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	200.00%
Company Action Level [Member] | Maximum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	200.00%
Company Action Level [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	150.00%
Regulatory Action Level [Member] | Maximum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	150.00%
Regulatory Action Level [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	100.00%
Authorized Control Level [Member] | Maximum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	100.00%
Authorized Control Level [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	70.00%
Mandatory Control Level [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	70.00%
Heritage P&C [Member]
Statutory Accounting Practices [Line Items]
Statutory accounting practices, capital and surplus requirements of insurance subsidiary	Greater of $15 million or 10% of their respective liabilities.
Minimum required amount of capital and surplus maintained by the insurance subsidiary	$ 15,000,000
Statutory capital and surplus requirements, percentage	10.00%
Heritage P&C [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	300.00%
Zephyr [Member]
Statutory Accounting Practices [Line Items]
Deposits held	$ 750,000
Dividends paid	$ 7,600,000	7,600,000
Zephyr [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Risk-based capital	300.00%
NBIC [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 3,000,000
Heritage P&C, Zephyr, and NBIC [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	375,100,000
Heritage P&C and Zephyr [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus		376,300,000
Heritage P&C and NBIC [Member]
Statutory Accounting Practices [Line Items]
Dividends paid	$ 0	$ 0	$ 0

Statutory Accounting and Regu_4

Statutory Accounting and Regulations - Consolidated GAAP Net (Loss) Income to Statutory Net Income of Insurance Subsidiaries (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statutory Accounting Practices [Line Items]
Consolidated GAAP net income (loss)	$ 27,155	$ (1,119)	$ 33,865
Deferred acquisition costs	31,377	(1,101)	7,979
Net Income Reconciliation [Member]
Statutory Accounting Practices [Line Items]
Consolidated GAAP net income (loss)	27,155	(1,119)	33,865
Deferred income taxes	(16,868)	32,644	6,069
Deferred acquisition costs	(31,377)	1,101	(7,979)
Surplus note interest		(4)
Non-statutory subsidiaries	(31,158)	5,410	(32,874)
Investment basis difference	335	446	540
Pre-acquisition income		20,839	3,755
Equity compensation	(2,408)	(2,408)	(2,107)
Convertible notes	(1,570)	1,051
Commission revenue	(6,289)	(6,700)
Change in fair value income statement	2,078
Other	(4,372)	(709)	(702)
Statutory net (loss) income of insurance subsidiaries	$ (64,472)	$ 50,553	$ 567

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Feb. 12, 2018	Feb. 09, 2018	Nov. 30, 2018	Dec. 31, 2018
Operating Leased Assets [Line Items]
Rent expense				$ 797,000
Maximum [Member]
Operating Leased Assets [Line Items]
Lease agreement, term				10 years
Minimum [Member]
Operating Leased Assets [Line Items]
Lease agreement, term				5 years
Sunrise, Florida [Member]
Operating Leased Assets [Line Items]
Lease agreement, term		68 months
Lease agreement, commencement date		Mar. 1, 2018
Monthly base rental payments, year one		$ 39,146
Monthly base rental payments, year two		40,330
Monthly base rental payments, year three		41,535
Monthly base rental payments, year four		42,780
Monthly base rental payments, year five		44,065
Monthly base rental payments, thereafter		$ 45,389
Plainview, New York [Member]
Operating Leased Assets [Line Items]
Lease agreement, term	5 years
Lease agreement, commencement date	May 1, 2018
Monthly base rental payments, year one and two	$ 2,975
Monthly base rental payments, year three	3,064
Monthly base rental payments, year four	3,156
Monthly base rental payments, year five	$ 3,251
Rhode Island [Member]
Operating Leased Assets [Line Items]
Lease agreement, term			10 years
Lease agreement commencement on or before paticular date			Feb. 15, 2019
Moving allowance			$ 28,098
Allowance for improvements per square foot			45
Annual fixed lease rent obligation at year one			$ 695,495
Operating lease percentage increase in annual fixed lease rent each year thereafter			2.00%
Rhode Island [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Monthly installments annual fixed rent for six month period			$ 347,712
Allowance for improvements			$ 1,300,000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Rent Payments (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Operating Leased Assets [Line Items]
2020	$ 2,758
2021	2,818
2022	2,874
2023	1,902
Thereafter	506
Total rental income due under non-cancellable operating leases	13,556
Office Space Leases [Member]
Operating Leased Assets [Line Items]
2019	922
2020	1,357
2021	1,386
2022	1,415
2023	1,272
Thereafter	4,863
Total rental income due under non-cancellable operating leases	$ 11,215

Accounts Payable and Other Li_3

Accounts Payable and Other Liabilities - Schedule of Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Deferred ceding commission	$ 44,996	$ 51,109
Outstanding claim checks	15,360	79,666
Accounts payable and other payables	8,379	17,948
Accrued interest and issuance costs	1,285	3,117
Accrued dividends	1,589
Escrow		1,210
Premium tax	2,241	3,660
Other liabilities	460	218
Commission payables	11,654	12,609
Total other liabilities	$ 85,964	$ 169,537

Accrued Bonus Compensation - Ad

Accrued Bonus Compensation - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Compensation Related Costs [Abstract]
Accrued employee's bonus compensation	$ 8.2	$ 6.9
Accrued employee's bonus compensation paid in cash	$ 2.2	$ 0.9

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Mrs. Shannon Lucas [Member]
Related Party Transaction [Line Items]
Consulting fees hourly rate	$ 400
Immediate Family Member of Management or Principal Owner [Member]
Related Party Transaction [Line Items]
Consulting fees		$ 628,800	$ 440,000
Heritage P&C and NBIC [Member] | Director [Member]
Related Party Transaction [Line Items]
Director annual compensation	$ 150,000

Employee Benefit Plan - Additio

Employee Benefit Plan - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
NBIC [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan, Plan Name		401(k)
Employer contribution, vesting percentage		20.00%
Employer contribution, vesting period		5 years
Maximum [Member] | NBIC [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of contribution on employee salary		4.00%
Heritage P&C, CAN, HMGA and Zephyr [Member]
Defined Contribution Plan Disclosure [Line Items]
Contribution for participating employees		$ 665,000	$ 815,000
Defined Contribution Plan, Plan Name		401(k)
Heritage P&C, CAN, HMGA and Zephyr [Member] | Florida [Member]
Defined Contribution Plan Disclosure [Line Items]
Medical premium cost		$ 3,200,000	3,000,000
Additional liability for unpaid claims	$ 367,700	367,700
Stop loss coverage per employee		150,000
Defined contribution plan, aggregate limit for losses		$ 1,500,000
Defined contribution plan, aggregate stop loss commences threshold percentage		125.00%
Heritage P&C, CAN, HMGA and Zephyr [Member] | Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of contribution on employee salary		4.00%
Heritage P&C, CAN, HMGA and Zephyr [Member] | Maximum [Member] | Florida [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, aggregate limit for losses in provided amount		$ 1,000,000
Heritage P&C, CAN, HMGA and Zephyr [Member] | First 3% of Employees [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of contribution on employee salary		100.00%
Heritage P&C, CAN, HMGA and Zephyr [Member] | Next 2% of the Employees [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of contribution on employee salary		50.00%
NBIC [Member]
Defined Contribution Plan Disclosure [Line Items]
Contribution for participating employees		$ 388,400	$ 35,350
Stop loss coverage per employee	150,000
Defined contribution plan, aggregate limit for losses	$ 1,500,000
Defined contribution plan, aggregate stop loss commences threshold percentage	125.00%
NBIC [Member] | Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, aggregate limit for losses in provided amount	$ 1,000,000

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($)	Aug. 31, 2017	Sep. 14, 2015	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 04, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock, shares authorized			50,000,000				50,000,000	50,000,000
Preferred stock, shares authorized			5,000,000				5,000,000
Common stock, shares outstanding			29,477,756				29,477,756	25,885,004
Treasury stock, shares			7,214,797				7,214,797	7,099,597
Additional paid-in capital			$ 325,292,000				$ 325,292,000	$ 294,836,000
Common stock voting rights							one vote
Stock repurchase program, authorized amount		$ 20,000,000								$ 50,000,000
Stock repurchase program, expiration date		Dec. 31, 2018
Treasury shares repurchased, value							$ 2,000,000	$ 61,623,000	$ 25,562,000
Cash dividend			$ 1,595,999	$ 1,595,999	$ 1,594,188	$ 1,601,100	$ 6,400,000
Convertible Senior Notes [Member]
Class Of Stock [Line Items]
Treasury shares repurchased, shares	3,552,397
Treasury shares repurchased, value	$ 40,000,000
Treasury shares repurchased, price per share	$ 11.26
Open Market Transactions [Member]
Class Of Stock [Line Items]
Treasury shares repurchased, shares							115,200	1,787,870	1,759,330
Treasury shares repurchased, value							$ 2,000,000	$ 21,600,000	$ 25,600,000
Restricted Stock [Member]
Class Of Stock [Line Items]
Unvested restricted common stock issued			605,801				605,801	675,000	900,000		1,125,000

Equity - Summary of Cash Divide

Equity - Summary of Cash Dividends (Detail) - USD ($)	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Cash dividend per common share	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.24	$ 0.30
Total cash dividends paid	$ 1,595,999	$ 1,595,999	$ 1,594,188	$ 1,601,100	$ 6,400,000
Record date	Dec. 31, 2018	Sep. 15, 2018	Jun. 15, 2018	Mar. 15, 2018
Payment date	Jan. 4, 2019	Oct. 3, 2018	Jul. 6, 2018	Apr. 3, 2018

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 22, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum tenure of stock option from the date of grant		10 years
Exercisable period of vested awards		30 days
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards granted		155,801	0	0
Stock-based compensation expense		$ 5,300,000	$ 4,800,000	$ 3,800,000
Unrecognized stock compensation expense	$ 10,900,000	$ 10,900,000
Unrecognized stock compensation expense, period		2 years
Restricted stock vested and released		225,000
Shares withheld to cover withholding taxes		112,500	87,065	66,635
Shares withheld to cover withholding taxes, value		$ 1,800,000	$ 1,600,000	$ 1,000,000
Recognized tax benefit from restricted stock awards and related paid dividends		$ 0	$ 0	$ 0
Employee [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards granted	155,801
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period		1 year
Minimum [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period		3 years
Minimum [Member] | Employee [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period	3 years
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period		5 years
Maximum [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period		5 years
Maximum [Member] | Employee [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options, vesting period	5 years
Omnibus Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance					2,981,737
Shares available for grant	1,170,097	1,170,097	1,125,243

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Restricted Stock Activity (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Number of shares	675,000	900,000	1,125,000
Granted, Number of shares	155,801	0	0
Vested, Number of shares	(112,500)	(137,935)	(158,365)
Canceled and surrendered, Number of shares	(112,500)	(87,065)	(66,635)
Ending balance, Number of shares	605,801	675,000	900,000
Beginning balance, Weighted-Average Grant-Date Fair Value per Share	$ 21.40	$ 21.40	$ 21.40
Granted, Weighted-Average Grant-Date Fair Value per Share	16.10
Vested, Weighted-Average Grant-Date Fair Value per Share	16.35	16.53	14.67
Canceled and surrendered, Weighted-Average Grant-Date Fair Value per Share	16.35	17.41	14.67
Ending balance, Weighted-Average Grant-Date Fair Value per Share	$ 20.41	$ 21.40	$ 21.40

Condensed Financial Informati_3

Condensed Financial Information of Heritage Insurance Holdings, Inc. - Schedule of Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Fixed maturity securities, available for sale, at fair value	$ 509,649	$ 549,796
Cash and cash equivalents	250,117	153,697
Other assets	11,821	19,883
Total Assets	1,768,713	1,771,210
LIABILITIES AND STOCKHOLDERS' EQUITY
Other liabilities	85,964	169,537
Total Liabilities	1,343,380	1,391,394
Additional paid-in capital	325,292	294,836
Treasury stock, at costs, 7,214,797	(89,185)	(87,185)
Accumulated other comprehensive loss	(6,527)	(3,064)
Retained earnings	195,750	175,226
Total Stockholders' Equity	425,333	379,816	$ 357,959	$ 356,553
Total Liabilities and Stockholders' Equity	1,768,713	1,771,210
Heritage Insurance Holdings, Inc. [Member]
ASSETS
Cash and cash equivalents	13,892	16,249
Investment in and advances to subsidiaries	598,525	584,983
Other assets	3,324	1,294
Total Assets	615,741	602,526
LIABILITIES AND STOCKHOLDERS' EQUITY
Other liabilities	190,408	222,710
Total Liabilities	190,408	222,710
Additional paid-in capital	325,295	294,839
Treasury stock, at costs, 7,214,797	(89,185)	(87,185)
Accumulated other comprehensive loss	(6,527)	(3,064)
Retained earnings	195,750	175,226
Total Stockholders' Equity	425,333	379,816
Total Liabilities and Stockholders' Equity	$ 615,741	$ 602,526

Condensed Financial Informati_4

Condensed Financial Information of Heritage Insurance Holdings, Inc. - Schedule of Condensed Balance Sheets (Parenthetical) (Detail) - shares	Dec. 31, 2018	Dec. 31, 2017
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Treasury stock, shares	7,214,797	7,099,597

Condensed Financial Informati_5

Condensed Financial Information of Heritage Insurance Holdings, Inc. - Schedule of Condensed Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Other revenue									$ 15,186	$ 15,163	$ 16,323
Total revenue	$ 124,878	$ 125,295	$ 117,972	$ 112,026	$ 108,618	$ 101,774	$ 96,938	$ 99,293	480,171	406,623	438,958
Expenses:
General and administrative expense									88,544	71,714	58,910
Interest expense, net									20,015	13,210	362
Other non-operating expense, net									10,527	42,217
Benefit from income taxes									11,839	(4,773)	22,538
Net income (loss)									27,155	(1,119)	33,865
Heritage Insurance Holdings, Inc. [Member]
Revenue:
Other revenue									1,858	1,949	1,403
Total revenue									1,858	1,949	1,403
Expenses:
General and administrative expense									19,005	17,792	11,558
Amortization of debt issuance cost									4,623	2,314	41
Interest expense, net									17,277	11,158	321
Other non-operating expense, net									9,791	41,013
Total expenses									50,696	72,277	11,920
Loss before income taxes and equity in net income of subsidiaries									(48,838)	(70,328)	(10,517)
Benefit from income taxes									(9,545)	(6,120)	(2,035)
Loss before equity in net income of subsidiaries									(39,293)	(64,208)	(8,482)
Net income (loss)									$ (39,293)	$ (64,208)	$ (8,482)

Condensed Financial Informati_6

Condensed Financial Information of Heritage Insurance Holdings, Inc. - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Cash Flow Statements Captions [Line Items]
Net cash provided by (used in) operating activities	$ 95,428	$ 7,489	$ 82,955
Investing Activities
Purchases of investments available for sale	(218,667)	(215,844)	(317,666)
Net cash provided by (used in) investing activities	24,365	(7,242)	(249,416)
Financing Activities
Proceeds from mortgage loan		12,658
Mortgage loan payments	(264)
Repurchase of convertible notes	(52,739)	(25,189)
Excess tax (expense) benefit on stock-based compensation			(739)
Tax withholding on share-based compensation awards	(1,839)	(1,599)	(977)
Purchase of treasury stock	(2,000)	(61,623)	(25,562)
Dividends	(6,380)	(8,249)	(6,806)
Net cash (used in) provided by financing activities	(31,953)	47,556	43,826
Increase in cash, cash equivalents, and restricted cash	87,840	47,803	(122,635)
Cash, cash equivalents and restricted cash, beginning of period	174,530	126,727	249,362
Cash, cash equivalents and restricted cash, end of period	262,370	174,530	126,727
Heritage Insurance Holdings, Inc. [Member]
Condensed Cash Flow Statements Captions [Line Items]
Net cash provided by (used in) operating activities	(21,004)	27,154	(6,045)
Investing Activities
Purchases of investments available for sale		78,213	(77,910)
Dividends received from subsidiaries	92,800	57,575	85,096
Acquisition of a business		(210,000)
Investments and advances to subsidiaries	(42,200)		(74,361)
Net cash provided by (used in) investing activities	50,600	(47,058)	(73,220)
Financing Activities
Proceeds from exercise of stock options and warrants		417
Proceeds from issuance of note payable, net of issuance costs	110,769	114,335	77,910
Proceeds from mortgage loan		12,658
Repayment of secured senior notes	(79,500)
Mortgage loan payments	(264)
Repurchase of convertible notes	(52,739)
Excess tax (expense) benefit on stock-based compensation			(739)
Tax withholding on share-based compensation awards	(1,839)	(1,599)	(977)
Purchase of treasury stock	(2,000)	(61,623)	(25,562)
Dividends	(6,380)	(8,249)	(6,806)
Net cash (used in) provided by financing activities	(31,953)	55,939	43,826
Increase in cash, cash equivalents, and restricted cash	(2,357)	8,881	(29,394)
Cash, cash equivalents and restricted cash, beginning of period	16,249	7,368	36,762
Cash, cash equivalents and restricted cash, end of period	$ 13,892	$ 16,249	$ 7,368

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Net premiums earned	$ 118,632	$ 118,238	$ 111,204	$ 106,108	$ 101,728	$ 95,208	$ 90,452	$ 92,176	$ 454,182	$ 379,564	$ 411,721
Investment income	1,407	3,852	2,470	3,075	3,122	2,735	2,973	2,502
Total revenues	124,878	125,295	117,972	112,026	108,618	101,774	96,938	99,293	480,171	406,623	438,958
Total operating expenses	102,525	111,079	109,822	87,209	85,448	100,361	83,876	87,403	410,635	357,088	382,193
Operating income	22,353	14,216	8,150	24,817	23,170	1,413	13,062	11,890	69,536	49,535	56,765
Income (loss) from continuing operations	$ 3,929	$ 5,989	$ 2,408	$ 14,829	$ (5,048)	$ (8,696)	$ 6,642	$ 5,983	$ 38,994	$ (5,892)	$ 56,403
Basic	$ 0.15	$ 0.23	$ 0.09	$ 0.58	$ (0.18)	$ (0.34)	$ 0.23	$ 0.21	$ 1.05	$ (0.04)	$ 1.14
Diluted	$ 0.15	$ 0.23	$ 0.09	$ 0.55	$ (0.18)	$ (0.34)	$ 0.23	$ 0.21	$ 1.04	$ (0.04)	$ 1.14

Segment Data - Additional Infor

Segment Data - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of reportable segment	1

Segment Data - Schedule of Dist

Segment Data - Schedule of Distribution of In-force Premium (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	$ 923,680	$ 940,838
Policy In Force	515,686	524,450
Florida [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	505,992	535,838
Policy In Force	230,937	242,400
New York [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	179,650	179,104
Policy In Force	92,431	94,138
New Jersey [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	70,322	71,930
Policy In Force	51,576	54,469
Massachusetts [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	59,592	55,645
Policy In Force	32,629	32,457
Hawaii [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	53,480	55,366
Policy In Force	67,181	70,337
Rhode Island [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	20,784	19,312
Policy In Force	13,189	12,758
North Carolina [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	14,685	13,161
Policy In Force	14,280	10,729
South Carolina [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	9,502	6,145
Policy In Force	6,411	4,102
Connecticut [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	6,864	3,982
Policy In Force	4,370	2,722
Alabama [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	1,571	10
Policy In Force	1,543	11
Georgia [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
In Force Premiums	1,238	346
Policy In Force	$ 1,139	$ 327

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Feb. 25, 2019	Feb. 19, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Oct. 31, 2018	Apr. 30, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Cash dividend, payable date			Jan. 4, 2019	Oct. 3, 2018	Jul. 6, 2018	Apr. 3, 2018
Dividend payable, record date			Dec. 31, 2018	Sep. 15, 2018	Jun. 15, 2018	Mar. 15, 2018
Principal amount			$ 155,757						$ 207,782
Convertible Note [Member]
Subsequent Event [Line Items]
Repurchase of convertible notes							$ 3,100	$ 10,600
Repurchase of convertible notes, cost							$ 3,600	$ 13,400
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Principal amount			$ 20,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash dividend, declared date	Feb. 25, 2019
Cash dividend per common share	$ 0.06
Cash dividend, payable date	Apr. 3, 2019
Dividend payable, record date	Mar. 15, 2019
Subsequent Event [Member] | Convertible Note [Member]
Subsequent Event [Line Items]
Repurchase of convertible notes		$ 5,800
Repurchase of convertible notes, cost		$ 2,900
Subsequent Event [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Stock issued, shares		285,201
Stock issued, value		$ 4,200
Subsequent Event [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Principal amount	$ 20,000
Partial paydown of revolving credit facility debt	$ 10,000

Schedule II - Condensed Finan_2

Schedule II - Condensed Financial Information of Registrant - Schedule of Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Fair Value	$ 509,649	$ 549,796
Cash and cash equivalents	250,117	153,697
Other assets	11,821	19,883
LIABILITIES AND STOCKHOLDERS' EQUITY
Long-term debt, net	148,794	184,405
Deferred income tax	7,705	34,333
Total Liabilities	1,343,380	1,391,394
Common stock, $0.0001 par value, 50,000,000 shares authorized, 30,083,559 shares issued and 29,477,756 outstanding at December 31, 2018 and 26,560,004 shares issued and 25,885,004 outstanding at December 31, 2017	3	3
Treasury stock, at costs, 7,214,797	(89,185)	(87,185)
Accumulated other comprehensive loss	(6,527)	(3,064)
Retained earnings	195,750	175,226
Heritage Insurance Holdings, Inc. [Member]
ASSETS
Cash and cash equivalents	13,892	16,249
Investment in and advances to subsidiaries	598,523
Other assets	3,324	1,294
Total Assets	615,739
LIABILITIES AND STOCKHOLDERS' EQUITY
Long-term debt, net	167,308
Accounts payable	4,915
Deferred income tax	10,692
Other accrued expenses	7,493
Total Liabilities	190,408	222,710
Common stock, $0.0001 par value, 50,000,000 shares authorized, 30,083,559 shares issued and 29,477,756 outstanding at December 31, 2018 and 26,560,004 shares issued and 25,885,004 outstanding at December 31, 2017	3
Paid-in-capital	325,290
Treasury stock, at costs, 7,214,797	(89,185)	(87,185)
Accumulated other comprehensive loss	(6,527)	(3,064)
Retained earnings	195,750	$ 175,226
Total Stockholders' Equity	425,331
Total Liabilities and Stockholders' Equity	$ 615,739

Schedule II - Condensed Finan_3

Schedule II - Condensed Financial Information of Registrant - Schedule of Condensed Balance Sheets (Parenthetical) (Detail) - shares	Dec. 31, 2018	Dec. 31, 2017
Stockholders Equity Excluding Portion Attributable To Subsidiaries Noncontrolling Interest [Abstract]
Common stock, shares issued	30,083,559	26,560,004
Common stock, shares outstanding	29,477,756	25,885,004
Treasury stock, shares	7,214,797	7,099,597

Schedule II - Condensed Finan_4

Schedule II - Condensed Financial Information of Registrant - Schedule of Condensed Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Other revenue									$ 15,186	$ 15,163	$ 16,323
Total revenue	$ 124,878	$ 125,295	$ 117,972	$ 112,026	$ 108,618	$ 101,774	$ 96,938	$ 99,293	480,171	406,623	438,958
Expenses:
General and administrative expense									88,544	71,714	58,910
Interest expense, net									20,015	13,210	362
Other non-operating expense, net									10,527	42,217
Benefit from income taxes									11,839	(4,773)	22,538
Net income (loss)									27,155	(1,119)	33,865
Heritage Insurance Holdings, Inc. [Member]
Revenue:
Other revenue									1,858	1,949	1,403
Total revenue									1,858	1,949	1,403
Expenses:
General and administrative expense									19,005	17,792	11,558
Amortization of debt issuance cost									4,623	2,314	41
Interest expense, net									17,277	11,158	321
Other non-operating expense, net									9,791	41,013
Total expenses									50,696	72,277	11,920
Loss before income taxes and equity in net income of subsidiaries									(48,838)	(70,328)	(10,517)
Benefit from income taxes									(9,545)	(6,120)	(2,035)
Loss before equity in net income of subsidiaries									(39,293)	(64,208)	(8,482)
Net income (loss)									$ (39,293)	$ (64,208)	$ (8,482)

Schedule II - Condensed Finan_5

Schedule II - Condensed Financial Information of Registrant - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Cash Flow Statements Captions [Line Items]
Net income (loss)	$ 27,155	$ (1,119)	$ 33,865
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Stock-based compensation	5,273	4,815	4,815
Net realized loss (gain)	399	(564)	(1,733)
Change in fair value of option feature		41,013
Deferred income taxes, net of acquired	(21,563)	19,619	3,103
Changes in operating assets and liabilities:
Income taxes payable			(2,092)
Accrued interest	(1,993)	3,217
Other assets	8,062	(4,907)	177
Other liabilities	(85,351)	75,705	(2,244)
Net cash provided by operating activities	95,428	7,489	82,955
INVESTING ACTIVITIES
Purchases of investments available for sale	(218,667)	(215,844)	(317,666)
Net cash provided by (used in) investing activities	24,365	(7,242)	(249,416)
FINANCING ACTIVITIES
Proceeds from mortgage loan		12,658
Mortgage loan payments	(264)
Repurchase of convertible notes	(52,739)	(25,189)
Excess tax expense on stock-based compensation			(739)
Tax withholding on share-based compensation awards	(1,839)	(1,599)	(977)
Purchase of treasury stock	(2,000)	(61,623)	(25,562)
Dividends	(6,380)	(8,249)	(6,806)
Net cash (used in) provided by financing activities	(31,953)	47,556	43,826
Increase in cash, cash equivalents, and restricted cash	87,840	47,803	(122,635)
Cash, cash equivalents and restricted cash, beginning of period	174,530	126,727	249,362
Cash, cash equivalents and restricted cash, end of period	262,370	174,530	126,727
Heritage Insurance Holdings, Inc. [Member]
Condensed Cash Flow Statements Captions [Line Items]
Net income (loss)	(39,293)
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Stock-based compensation	5,273
Net realized loss (gain)	9,790
Change in fair value of option feature	3,252
Amortization of debt issuance cost	4,623	2,314	41
Deferred income taxes, net of acquired	(1,325)
Changes in operating assets and liabilities:
Prepaid	121
Income taxes payable	(5,080)
Dividends payable	1,589
Accrued interest	(3,771)
Other assets	(3,521)
Other liabilities	7,338
Net cash provided by operating activities	(21,004)	27,154	(6,045)
INVESTING ACTIVITIES
Purchases of investments available for sale		78,213	(77,910)
Dividends received from subsidiaries	92,800	57,575	85,096
Acquisition of a business		(210,000)
Investments and advances to subsidiaries	(42,200)		(74,361)
Net cash provided by (used in) investing activities	50,600	(47,058)	(73,220)
FINANCING ACTIVITIES
Proceeds from exercise of stock options and warrants		417
Proceeds from issuance of note payable, net of issuance costs	110,769	114,335	77,910
Proceeds from mortgage loan		12,658
Repayment of secured senior notes	(79,500)
Mortgage loan payments	(264)
Repurchase of convertible notes	(52,739)
Excess tax expense on stock-based compensation			(739)
Tax withholding on share-based compensation awards	(1,839)	(1,599)	(977)
Purchase of treasury stock	(2,000)	(61,623)	(25,562)
Dividends	(6,380)	(8,249)	(6,806)
Net cash (used in) provided by financing activities	(31,953)	55,939	43,826
Increase in cash, cash equivalents, and restricted cash	(2,357)	8,881	(29,394)
Cash, cash equivalents and restricted cash, beginning of period	16,249	7,368	36,762
Cash, cash equivalents and restricted cash, end of period	$ 13,892	$ 16,249	$ 7,368

Schedule V - Valuation Allowa_2

Schedule V - Valuation Allowances and Qualifing Accounts (Detail) - Allowances for Doubtful Accounts [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning balance	$ 0
Charges in earnings	0
Charges to other accounts	0
Deductions	0
Ending balance	$ 0

Schedule VI - Supplemental In_2

Schedule VI - Supplemental Information Concerning Consolidated Property and Casuality Insurance Operations (Detail) - Consolidated Property and Casuality Insurance [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Supplemental Information For Property Casualty Insurance Underwriters [Line Items]
Reserves for Unpaid Losses and LAE	$ 432,359
Incurred Losses and LAE Current Year	224,080
Incurred Losses and LAE Prior Years	13,345
Paid losses and LAE	210,303
Net Investment Income	13,280
Deferred Policy Acquisition Costs ("DPAC")	73,055
Amortization of DPAC, Net	139,630
Net Premiums Written	445,898
Net Premiums Earned	454,182
Unearned Premiums	$ 472,357