Kinsale Capital (KNSL) 10-Q 4 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2017	May 01, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Kinsale Capital Group, Inc.
Entity Central Index Key	1,669,162
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		20,968,707
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Fixed maturity securities available-for-sale, at fair value (amortized cost: $399,331 in 2017; $413,526 in 2016)	$ 397,757	$ 411,223
Equity securities available-for-sale, at fair value (cost: $17,465 in 2017; $14,350 in 2016)	22,410	18,374
Total investments	420,167	429,597
Cash and cash equivalents	75,556	50,752
Investment income due and accrued	2,500	2,293
Premiums receivable, net	18,696	16,984
Receivables from reinsurers	0	8,567
Reinsurance recoverables	40,649	70,317
Ceded unearned premiums	14,183	13,512
Deferred policy acquisition costs, net of ceding commissions	10,501	10,150
Intangible assets	3,538	3,538
Deferred income tax asset, net	6,653	6,605
Other assets	2,012	2,074
Total assets	594,455	614,389
Liabilities
Reserves for unpaid losses and loss adjustment expenses	273,001	264,801
Unearned premiums	93,744	89,344
Payable to reinsurers	3,316	4,090
Funds held for reinsurers	0	36,497
Accounts payable and accrued expenses	3,399	8,752
Other liabilities	4,524	691
Total liabilities	377,984	404,175
Stockholders' Equity
Common stock, $0.01 par value, 400,000,000 shares authorized, 20,968,707 shares issued and outstanding at March 31, 2017 and December 31, 2016	210	210
Additional paid-in capital	153,514	153,353
Retained earnings	58,663	53,640
Accumulated other comprehensive income	4,084	3,011
Stockholders’ equity	216,471	210,214
Total liabilities and stockholders’ equity	$ 594,455	$ 614,389

Consolidated Balance Sheet (Una

Consolidated Balance Sheet (Unaudited) (Parenthetical) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Fixed maturity securities available-for-sale, amortized cost	$ 399,331	$ 413,526
Equity securities available-for-sale, cost	$ 17,465	$ 14,350
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	20,968,707	20,968,707
Common stock, shares outstanding (in shares)	20,968,707	20,968,707

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Gross written premiums	$ 52,862	$ 43,082
Ceded written premiums	(8,700)	4,713
Net written premiums	44,162	47,795
Change in unearned premiums	(3,729)	(17,198)
Net earned premiums	40,433	30,597
Net investment income	2,286	1,676
Net realized investment (losses) gains	(32)	387
Other income	0	58
Total revenues	42,687	32,718
Expenses
Losses and loss adjustment expenses	22,107	18,121
Underwriting, acquisition and insurance expenses	11,294	6,248
Other expenses	0	460
Total expenses	33,401	24,829
Income before income taxes	9,286	7,889
Total income tax expense	3,005	2,632
Net income	6,281	5,257
Other Comprehensive Income
Change in unrealized gains, net of taxes of $577 in 2017 and $1,145 in 2016	1,073	2,126
Total comprehensive income	$ 7,354	$ 7,383
Common Stock [Member]
Earnings per share - basic	$ 0.30	$ 0
Earnings per share - diluted	$ 0.29	$ 0
Weighted average shares outstanding - basic	20,969	0
Weighted average shares outstanding - diluted	21,389	0
Expenses
Net income	$ 6,281	$ 0
Class A Common Stock [Member]
Earnings per share - basic	$ 0	$ 0.37
Earnings per share - diluted	$ 0	$ 0.37
Weighted average shares outstanding - basic	0	13,803
Weighted average shares outstanding - diluted	0	13,803
Class B Common Stock [Member]
Earnings per share - basic	$ 0	$ 0.07
Earnings per share - diluted	$ 0	$ 0.07
Weighted average shares outstanding - basic	0	1,531
Weighted average shares outstanding - diluted	0	1,538

Consolidated Statements of Inc5

Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parenthetical) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Income taxes on net unrealized gains (losses)	$ 577	$ 1,145

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Class A Common Stock [Member]	Class A Common Stock [Member]Common Stock [Member]	Class B Common Stock [Member]	Class B Common Stock [Member]Common Stock [Member]	Common Stock [Member]	Common Stock [Member]Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, shares					13,803,000		1,514,000		0
Stock-based compensation (shares)							21,000
Balance at Dec. 31, 2015	$ 113,451	$ 80,229	$ 29,570	$ 3,651		$ 1		$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	7	7
Other comprehensive income, net of tax	2,126			2,126
Net income	5,257		5,257						$ 0
Balance at Mar. 31, 2016	$ 120,841	80,236	34,827	5,777		1		0		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, shares					13,803,000		1,535,000		0
Balance, shares	20,968,707				0		0		20,969,000
Balance at Dec. 31, 2016	$ 210,214	153,353	53,640	3,011		0		0		210
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	161	161
Dividends	(1,258)		(1,258)
Other comprehensive income, net of tax	1,073			1,073
Net income	6,281		6,281						$ 6,281
Balance at Mar. 31, 2017	$ 216,471	$ 153,514	$ 58,663	$ 4,084		$ 0		$ 0		$ 210
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, shares	20,968,707				0		0		20,969,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Activities
Net cash provided by operating activities	$ 15,447	$ 16,169
Investing Activities
Purchase of property and equipment	(31)	(122)
Change in short-term investments, net	0	(7,684)
Securities available-for-sale
Purchases – fixed maturity securities	(6,147)	(24,039)
Purchases – equity securities	(3,114)	(2,084)
Sales – fixed maturity securities	718	9,328
Maturities and calls – fixed maturity securities	19,198	9,901
Net cash provided by (used in) investing activities	10,624	(14,700)
Financing Activities
Dividends paid	(1,258)	0
Payments on capital lease	(9)	(33)
Net cash used in financing activities	(1,267)	(33)
Net change in cash and cash equivalents	24,804	1,436
Cash and cash equivalents at beginning of year	50,752	24,544
Cash and cash equivalents at end of period	$ 75,556	$ 25,980

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of significant accounting policies Basis of presentation The accompanying condensed consolidated financial statements and notes have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and do not contain all of the information and footnotes required by U.S. GAAP for complete financial statements. For a more complete description of the Company’s business and accounting policies, these condensed consolidated interim financial statements should be read in conjunction with the 2016 audited consolidated financial statements of Kinsale Capital Group, Inc. and its wholly owned subsidiaries (the "Company") included in the Annual Report on Form 10-K. In the opinion of management, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included. Such adjustments consist only of normal recurring items. All significant intercompany balances and transactions have been eliminated in consolidation. Interim results are not necessarily indicative of results of operations for the full year. Use of estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Management periodically reviews its estimates and assumptions. Prospective accounting pronouncements ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU 2016-01, "Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities," which requires equity investments to be measured at fair value with changes in fair value recognized in net income, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset, and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The amendments in this ASU are effective for public companies for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the impact of the adoption of this ASU on its consolidated financial statements, which may introduce additional volatility in the Company's results of operations. ASU 2016-02, Leases (Topic 842) In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" to improve the financial reporting of leasing transactions. Under this ASU, lessees will recognize a right-of-use asset and corresponding liability on the balance sheet for all leases, except for leases covering a period of fewer than 12 months. The liability is to be initially measured at the present value of the future minimum lease payments taking into account renewal options if applicable plus initial incremental direct costs such as commissions. The minimum payments are discounted using the rate implicit in the lease or, if not known, the lessee’s incremental borrowing rate at the inception of the lease. The lessee’s income statement treatment for leases will vary depending on the nature of what is being leased. A financing type lease is present when, among other matters, the asset is being leased for a substantial portion of its economic life or has an end-of-term title transfer or a bargain purchase option as in today’s practice. The payment of the liability set up for such leases will be apportioned between interest and principal; the right-of use asset will be generally amortized on a straight-line basis. If the lease does not qualify as a financing type lease, it will be accounted for on the income statement as rent on a straight-line basis. This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) On June 16, 2016, the FASB issued ASU 2016-13, "Financial Instruments – Credit Losses (Topic 326)" to provide more useful information about the expected credit losses on financial instruments. Current GAAP delays the recognition of credit losses until it is probable a loss has been incurred. The update will require a financial asset measured at amortized cost to be presented at the net amount expected to be collected by means of an allowance for credit losses that runs through net income. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses. However, the amendments would limit the amount of the allowance to the amount by which fair value is below amortized cost. The measurement of credit losses on available-for-sale securities is similar under current GAAP, but the update requires the use of the allowance account through which amounts can be reversed, rather than through an irreversible write-down. This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018. Upon adoption, the update will be applied using the modified-retrospective approach, by which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period presented. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities On March 30, 2017, the FASB issued ASU 2017-08, "Premium Amortization on Purchased Callable Debt Securities," which shortens the amortization period of the premium for certain callable debt securities, from the contractual maturity date to the earliest call date. This ASU is effective in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including in an interim period. Upon adoption, the update will applied on a modified retrospective basis, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period presented. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. There are no other prospective accounting standards which, upon their effective date, would have a material impact on the Company's consolidated financial statements.

Investments

Investments	3 Months Ended
	Mar. 31, 2017
Investments [Abstract]
Investments	Investments Available-for-sale investments The following tables summarize the Company’s available-for-sale investments at March 31, 2017 and December 31, 2016: March 31, 2017 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,106 $ 6 $ (22 ) $ 12,090 Obligations of states, municipalities and political subdivisions 128,662 1,756 (2,574 ) 127,844 Corporate and other securities 107,713 560 (154 ) 108,119 Asset-backed securities 68,965 241 (218 ) 68,988 Residential mortgage-backed securities 81,885 554 (1,723 ) 80,716 Total fixed maturities 399,331 3,117 (4,691 ) 397,757 Equity securities: Exchange traded funds 17,465 4,952 (7 ) 22,410 Total available-for-sale investments $ 416,796 $ 8,069 $ (4,698 ) $ 420,167 December 31, 2016 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,106 $ 8 $ (16 ) $ 12,098 Obligations of states, municipalities and political subdivisions 124,728 1,470 (2,960 ) 123,238 Corporate and other securities 118,473 550 (233 ) 118,790 Asset-backed securities 73,317 241 (264 ) 73,294 Residential mortgage-backed securities 84,902 585 (1,684 ) 83,803 Total fixed maturities 413,526 2,854 (5,157 ) 411,223 Equity securities: Exchange traded funds 14,350 4,026 (2 ) 18,374 Total available-for-sale investments $ 427,876 $ 6,880 $ (5,159 ) $ 429,597 Available-for-sale securities in a loss position The Company regularly reviews all securities with unrealized losses to assess whether the decline in the securities’ fair value is deemed to be an other-than-temporary impairment ("OTTI"). The Company considers a number of factors in completing its OTTI review, including the length of time and the extent to which fair value has been below cost and the financial condition of an issuer. In addition to specific issuer information, the Company also evaluates the current market and interest rate environment. Generally, a change in a security’s value caused by a change in the market or interest rate environment does not constitute an OTTI, but rather a temporary decline in market value. For fixed maturities, the Company considers whether it intends to sell the security or if it is more likely than not that it will be required to sell the security before recovery, the credit quality of the issuer and the ability to recover all amounts outstanding when contractually due. When assessing whether it intends to sell a fixed maturity or if it is likely to be required to sell a fixed maturity before recovery of its amortized cost, the Company evaluates facts and circumstances including, but not limited to, decisions to reposition the investment portfolio, potential sales of investments to meet cash flow needs and potential sales of investments to capitalize on favorable pricing. For equity securities, the Company considers the near-term prospects of an issuer and its ability and intent to hold the security for a period of time sufficient to allow for anticipated recovery. For fixed maturities where a decline in fair value is considered to be other-than-temporary and the Company intends to sell the security, or it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost, an impairment is recognized in net income based on the fair value of the security at the time of assessment, resulting in a new cost basis for the security. If the decline in fair value of a fixed maturity security below its amortized cost is considered to be other-than-temporary based upon other considerations, the Company compares the estimated present value of the cash flows expected to be collected to the amortized cost of the security. The extent to which the estimated present value of the cash flows expected to be collected is less than the amortized cost of the security represents the credit-related portion of the OTTI, which is recognized in net income, resulting in a new cost basis for the security. Any remaining decline in fair value represents the noncredit portion of the OTTI, which is recognized in other comprehensive income (loss). For equity securities, a decline in fair value that is considered to be other-than-temporary is recognized in net income based on the fair value of the security at the time of assessment, resulting in a new cost basis for the security. The following tables summarize gross unrealized losses and fair value for available-for-sale securities by length of time that the securities have continuously been in an unrealized loss position: March 31, 2017 Less than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 11,975 $ (22 ) $ — $ — $ 11,975 $ (22 ) Obligations of states, municipalities and political subdivisions 63,280 (2,517 ) 3,214 (57 ) 66,494 (2,574 ) Corporate and other securities 41,345 (114 ) 6,962 (40 ) 48,307 (154 ) Asset-backed securities 13,408 (194 ) 7,267 (24 ) 20,675 (218 ) Residential mortgage-backed securities 63,050 (1,443 ) 7,279 (280 ) 70,329 (1,723 ) Total fixed maturities 193,058 (4,290 ) 24,722 (401 ) 217,780 (4,691 ) Equity securities: Exchange traded funds 1,013 (7 ) — — 1,013 (7 ) Total $ 194,071 $ (4,297 ) $ 24,722 $ (401 ) $ 218,793 $ (4,698 ) At March 31, 2017 , the Company held 210 fixed maturity securities with a total estimated fair value of $217.8 million and gross unrealized losses of $4.7 million . Of these securities, 21 were in a continuous unrealized loss position for greater than one year. As discussed above, the Company regularly reviews all securities within its investment portfolio to determine whether any impairment has occurred. Unrealized losses were caused by interest rate changes or other market factors and were not credit specific issues. At March 31, 2017 , 92.1% of the Company’s fixed maturity securities were rated "A-" or better and made expected coupon payments under the contractual terms of the securities. At March 31, 2017 , the Company held three exchange traded funds ("ETFs") in its equity portfolio with a total estimated fair value of $1.0 million and gross unrealized losses of $7 thousand . None of these securities were in a continuous unrealized loss position for greater than one year. Management concluded that there were no other-than-temporary impairments from fixed maturity or equity securities with unrealized losses for the three months ended March 31, 2017 . December 31, 2016 Less than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 8,980 $ (16 ) $ — $ — $ 8,980 $ (16 ) Obligations of states, municipalities and political subdivisions 70,727 (2,960 ) — — 70,727 (2,960 ) Corporate and other securities 50,274 (145 ) 12,375 (88 ) 62,649 (233 ) Asset-backed securities 14,750 (232 ) 9,961 (32 ) 24,711 (264 ) Residential mortgage-backed securities 65,439 (1,403 ) 7,186 (281 ) 72,625 (1,684 ) Total fixed maturities 210,170 (4,756 ) 29,522 (401 ) 239,692 (5,157 ) Equity securities: Exchange traded funds 388 (2 ) — — 388 (2 ) Total $ 210,558 $ (4,758 ) $ 29,522 $ (401 ) $ 240,080 $ (5,159 ) At December 31, 2016 , the Company held 231 fixed maturity securities with a total estimated fair value of $239.7 million and gross unrealized losses of $5.2 million . Of those securities, 24 were in a continuous unrealized loss position for greater than one year. Unrealized losses were caused by interest rate changes or other market factors and were not credit specific issues. At December 31, 2016, 92.6% of the Company’s fixed maturity securities were rated "A-" or better and made expected coupon payments under the contractual terms of the securities. Based on its review, the Company concluded that none of the fixed maturity securities with an unrealized loss at December 31, 2016 experienced an other-than-temporary impairment. Within its equity portfolio, the Company holds an ETF with exposure across developed and emerging non-U.S. equity markets around the world. This ETF had been in an unrealized loss position for greater than one year and, management concluded based upon its review, it was other-than-temporarily impaired. The Company recognized an impairment loss of $0.3 million on this fund for the year ended December 31, 2016. Contractual maturities of available-for-sale fixed maturity securities The amortized cost and estimated fair value of available-for-sale fixed maturity securities at March 31, 2017 are summarized, by contractual maturity, as follows: March 31, 2017 Amortized Estimated Cost Fair Value (in thousands) Due in one year or less $ 67,053 $ 67,053 Due after one year through five years 56,664 57,157 Due after five years through ten years 24,556 25,124 Due after ten years 100,208 98,719 Asset-backed securities 68,965 68,988 Residential mortgage-backed securities 81,885 80,716 Total fixed maturities $ 399,331 $ 397,757 Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties, and the lenders may have the right to put the securities back to the borrower. Net investment income The following table presents the components of net investment income: Three Months Ended March 31, 2017 2016 (in thousands) Interest: Taxable bonds $ 1,537 $ 1,389 Municipal bonds (tax exempt) 794 406 Cash, cash equivalents, and short-term investments 87 8 Dividends on equity securities 110 84 Gross investment income 2,528 1,887 Investment expenses (242 ) (211 ) Net investment income $ 2,286 $ 1,676 Realized investment gains and losses The following table presents realized investment gains and losses for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Realized gains: Sales of fixed maturities $ — $ 387 Total realized gains — 387 Realized losses: Sales of fixed maturities (32 ) — Total realized losses (32 ) — Net investment (losses) gains $ (32 ) $ 387 Change in net unrealized gains (losses) on investments The following table presents the change in available-for-sale net unrealized gains (losses) by investment type for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Change in net unrealized gains (losses): Fixed maturities $ 729 $ 2,930 Equity securities 921 341 Net increase $ 1,650 $ 3,271 Insurance – statutory deposits The Company had invested assets with a carrying value of $7.0 million on deposit with state regulatory authorities at March 31, 2017 and December 31, 2016 . Payable for investments purchased The Company recorded a payable for investments purchased, not yet settled, of $0.8 million at March 31, 2017 and $0.6 million at December 31, 2016. The payable balances were included in the "other liabilities" line item of the balance sheet and treated as a non-cash transaction for purposes of cash flow presentation.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair value measurements Fair value was estimated for each class of financial instrument for which it was practical to estimate fair value. Fair value is defined as the price in the principal market that would be received for an asset to facilitate an orderly transaction between market participants on the measurement date. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not acting under duress. Fair value hierarchy disclosures are based on the quality of inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. The three levels of the fair value hierarchy are defined as follows: Level 1 - Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities traded in active markets. Level 2 - Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and market-corroborated inputs. Level 3 - Inputs to the valuation methodology are unobservable for the asset or liability and are significant to the fair value measurement. Fair values of the Company's investment portfolio are estimated using unadjusted prices obtained by its investment manager from third party pricing services, where available. For securities where the Company is unable to obtain fair values from a pricing service or broker, fair values are estimated using information obtained from the Company's investment manager. Management performs several procedures to ascertain the reasonableness of investment values included in the condensed consolidated financial statements including 1) obtaining and reviewing internal control reports from the Company's investment manager that obtain fair values from third party pricing services, 2) discussing with the Company's investment manager its process for reviewing and validating pricing obtained from outside pricing services and 3) reviewing the security pricing received from the Company's investment manager and monitoring changes in unrealized gains and losses. The Company has evaluated the various types of securities in its investment portfolio to determine an appropriate fair value hierarchy level based upon trading activity and the observability of market inputs. The following tables present the balances of assets measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 , by level within the fair value hierarchy. March 31, 2017 Level 1 Level 2 Level 3 Total (in thousands) Assets Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,090 $ — $ — $ 12,090 Obligations of states, municipalities and political subdivisions — 127,844 — 127,844 Corporate and other securities — 108,119 — 108,119 Asset-backed securities — 68,988 — 68,988 Residential mortgage-backed securities — 80,716 — 80,716 Total fixed maturities 12,090 385,667 — 397,757 Equity securities: Exchange traded funds 22,410 — — 22,410 Total $ 34,500 $ 385,667 $ — $ 420,167 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Assets Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,098 $ — $ — $ 12,098 Obligations of states, municipalities and political subdivisions — 123,238 — 123,238 Corporate and other securities — 118,790 — 118,790 Asset-backed securities — 73,294 — 73,294 Residential mortgage-backed securities — 83,803 — 83,803 Total fixed maturities 12,098 399,125 — 411,223 Equity securities: Exchange traded funds 18,374 — — 18,374 Total $ 30,472 $ 399,125 $ — $ 429,597 There were no transfers into or out of Level 1 and Level 2 during the three months ended March 31, 2017 . There were no assets or liabilities measured at fair value on a nonrecurring basis as of March 31, 2017 and December 31, 2016 . Due to the relatively short-term nature of cash and cash equivalents, receivables and payables, their carrying amounts are reasonable estimates of fair value.

Deferred Policy Acquisition Cos

Deferred Policy Acquisition Costs	3 Months Ended
	Mar. 31, 2017
Deferred Policy Acquisition Costs Disclosures [Abstract]
Deferred Policy Acquisition Costs	Deferred policy acquisition costs The following table presents the amounts of policy acquisition costs deferred and amortized for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (in thousands) Balance, beginning of period $ 10,150 $ (1,696 ) Policy acquisition costs deferred: Direct commissions 7,880 6,400 Ceding commissions (2,591 ) 2,791 Other underwriting and policy acquisition costs 761 726 Policy acquisition costs deferred 6,050 9,917 Amortization of net policy acquisition costs (5,699 ) (2,916 ) Balance, end of period $ 10,501 $ 5,305 For the three months ended March 31, 2016 , the deferred ceding commissions were affected by the change in the ceding percentage under the Company's multi-line quota share reinsurance treaty ("MLQS"). See Note 8 for further details regarding the MLQS.

Underwriting, Acquisition and I

Underwriting, Acquisition and Insurance Expenses	3 Months Ended
	Mar. 31, 2017
Underwriting, Acquisition and Insurance Expenses [Abstract]
Underwriting, acquisition and insurance expenses	Underwriting, acquisition and insurance expenses Underwriting, acquisition and insurance expenses for the three months ended March 31, 2017 and 2016 consist of the following: Three Months Ended March 31, 2017 2016 (in thousands) Underwriting, acquisition and insurance expenses incurred: Gross commissions $ 7,149 $ 6,406 Ceding commissions (2,346 ) (5,408 ) Other operating expenses 6,491 5,250 Total $ 11,294 $ 6,248 Other operating expenses within underwriting, acquisition and insurance expenses include salaries, bonus and employee benefits expenses of $5.0 million and $4.5 million for the three months ended March 31, 2017 and 2016 , respectively.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings per share The following represents a reconciliation of the numerator and denominator of the basic and diluted earnings per share computations contained in the consolidated financial statements: Three Months Ended March 31, 2017 2016 (in thousands, except per share data) Earnings allocable to common stockholders $ 6,281 $ — Earnings allocable to Class A stockholders $ — $ 5,154 Earnings allocable to Class B stockholders $ — $ 103 Basic earnings per share: Common stock $ 0.30 $ — Class A common stock $ — $ 0.37 Class B common stock $ — $ 0.07 Diluted earnings per share: Common stock $ 0.29 $ — Class A common stock $ — $ 0.37 Class B common stock $ — $ 0.07 Basic weighted average shares outstanding: Common stock 20,969 — Class A common stock — 13,803 Class B common stock — 1,531 Dilutive effect of shares issued under stock compensation arrangements: Common stock - stock options 420 — Class B common stock - unvested restricted stock grants — 7 Diluted weighted average shares outstanding: Common stock 21,389 — Class A common stock — 13,803 Class B common stock — 1,538 Prior to the reclassification of common stock on July 28, 2016, all of the earnings of the Company were allocated to Class A and Class B common stock and earnings per share was calculated using the two-class method. Under the two-class method, earnings attributable to Class A and Class B common stockholders were determined by allocating undistributed earnings to each class of stock. The undistributed earnings attributable to common stockholders were allocated based on the contractual participation rights of the Class A common stock and Class B common stock as if those earnings for the period had been distributed. Earnings attributable to Class A common stockholders equaled the sum of dividends at the rate per annum of 12% compounding annually during the period ("Accruing Dividends") plus seventy-five percent of any remaining assets of the Company available for distribution to its stockholders in the event of a liquidation, dissolution, winding up or sale of the Company after payment of the Accruing Dividends ("Residual Proceeds"). Earnings attributable to Class B common stockholders equaled twenty-five percent of the Residual Proceeds. After the reclassification of common stock on July 28, 2016, all of the earnings of the Company were attributable to the single class of common stock. Basic earnings per share for each class of common stock was computed by dividing the earnings attributable to the common stockholders by the weighted average number of shares of each respective class of common stock outstanding during the period. Diluted earnings per share attributable to each class of common stock was computed by dividing earnings attributable to common stockholders by the weighted average shares outstanding for each respective class of common stock outstanding during the period, including potentially dilutive shares of common stock for the period determined using the treasury stock method. There were no potentially dilutive shares attributable to Class A common stockholders for the three months ended March 31, 2016. For purposes of the diluted earnings per share attributable to Class B common stockholders calculation, unvested restricted grants of common stock were considered to be potentially dilutive shares of common stock. There were no material anti-dilutive Class B shares for the three months ended March 31, 2016. There were no anti-dilutive stock options for the three months ended March 31, 2017.

Reserves for Unpaid Losses and

Reserves for Unpaid Losses and Loss Adjustment Expenses	3 Months Ended
	Mar. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]
Reserves for Unpaid Losses and Loss Adjustment Expenses	Reserves for unpaid losses and loss adjustment expenses The following table presents a reconciliation of consolidated beginning and ending reserves for unpaid losses and loss adjustment expenses: March 31, 2017 2016 (in thousands) Net reserves for unpaid losses and loss adjustment expenses, beginning of year $ 194,602 $ 124,126 Commutation of MLQS 27,929 24,296 Adjusted net reserves for losses and loss adjustment expenses, beginning of year 222,531 148,422 Incurred losses and loss adjustment expenses: Current year 27,211 20,844 Prior years (5,104 ) (2,723 ) Total net losses and loss adjustment expenses incurred 22,107 18,121 Payments: Current year 333 290 Prior years 11,566 5,133 Total payments 11,899 5,423 Net reserves for unpaid losses and loss adjustment expenses, end of period 232,739 161,120 Reinsurance recoverable on unpaid losses 40,262 74,157 Gross reserves for unpaid losses and loss adjustment expenses, end of period $ 273,001 $ 235,277 During the three months ended March 31, 2017, the reserves for unpaid losses and loss adjustment expenses held at December 31, 2016 developed favorably by $5.1 million . The favorable development was primarily attributable to the 2016 accident year of $3.3 million and the 2015 accident year of $2.5 million , which were due to reported losses emerging at a lower level than expected. The favorable development was offset in part by adverse development of $0.9 million for the 2013 accident year. During the three months ended March 31, 2016, the reserves for unpaid losses and loss adjustment expenses held at December 31, 2015 developed favorably by $2.7 million . The favorable development was attributable primarily to the 2015 accident year of $1.7 million and the 2014 accident year of $0.8 million , which were due to reported losses emerging at a lower level than expected. See Note 8 for further details regarding the commutation of the MLQS.

Reinsurance

Reinsurance	3 Months Ended
	Mar. 31, 2017
Reinsurance Disclosures [Abstract]
Reinsurance	Reinsurance The following table summarizes the effect of reinsurance on premiums written and earned for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (in thousands) Written: Direct $ 52,862 $ 42,990 Assumed — 92 Ceded (8,700 ) 4,713 Net written $ 44,162 $ 47,795 Earned: Direct $ 48,462 $ 43,093 Assumed — 32 Ceded (8,029 ) (12,528 ) Net earned $ 40,433 $ 30,597 Incurred losses and loss adjustment expenses were net of reinsurance (ceded incurred losses and loss adjustment expenses) of $2.4 million and $4.4 million for the three months ended March 31, 2017 and 2016 , respectively. At March 31, 2017 , reinsurance recoverables on paid and unpaid losses were $0.3 million and $40.3 million , respectively. At December 31, 2016 , reinsurance recoverables on paid and unpaid losses were and $0.1 million and $70.2 million , respectively. Multi-line quota share reinsurance Historically, the Company participated in a MLQS treaty that transferred a proportion of the risk related to certain lines of business written by its subsidiary, Kinsale Insurance Company, an Arkansas insurance company ("Kinsale Insurance"), to third-party reinsurers in exchange for a proportion of the direct written premiums on that business. The MLQS was subject to annual renewal and, in accordance with the terms of the MLQS, the Company could adjust the amount of business ceded on a quarterly basis. Under the terms of the MLQS covering the period January 1, 2016 to December 31, 2016 (the "2016 MLQS"), Kinsale Insurance received a provisional ceding commission equal to 41% of ceded written premiums and paid a reinsurance margin equal to 4% of ceded written premium. The 2016 MLQS included a sliding scale commission provision that adjusted the ceding commissions within a range of 25% to 41% based on the loss experience of the business ceded. Effective January 1, 2016, the Company reduced the ceding percentage from 40% as of December 31, 2015 to 15% . The change in the ceding percentage reduced ceded written premiums by $17.0 million at January 1, 2016, with a corresponding reduction to ceded unearned premiums. As a result of the successful completion of the initial public offering ("IPO") in August 2016, the Company terminated and commuted the 2016 MLQS on October 1, 2016. Effective January 1, 2016, the Company commuted the MLQS covering the period January 1, 2014 to December 31, 2014 (the "2014 MLQS"). The commutation reduced reinsurance recoverables on unpaid losses and receivable from reinsurers by $34.2 million at January 1, 2016, with a corresponding reduction to funds held for reinsurers. Effective January 1, 2017, the Company commuted the MLQS covering the period January 1, 2015 to December 31, 2015 (the "2015 MLQS"). The commutation reduced reinsurance recoverables on unpaid losses and receivable from reinsurers by approximately $36.5 million , with a corresponding reduction to funds held for reinsurers. The Company did not renew the MLQS for the 2017 calendar year and there are no remaining MLQS balances outstanding as of January 1, 2017. The commutations did not have any effect on the Company's results of operations or cash flows for the applicable periods.

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income	Other comprehensive income The following table summarizes the components of other comprehensive income for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Unrealized gains arising during the period, before income taxes $ 1,618 $ 3,658 Income taxes (566 ) (1,280 ) Unrealized gains arising during the period, net of income taxes 1,052 2,378 Less reclassification adjustment: Net realized investment gains (losses) (32 ) 387 Income taxes 11 (135 ) Reclassification adjustment included in net income (21 ) 252 Other comprehensive income $ 1,073 $ 2,126 The sale of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive income to realized gains or losses in current period earnings. The related tax effect of the reclassification adjustment is recorded in income tax expense in current period earnings. See Note 2 for additional information.

Significant Accounting Polici17

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of presentation The accompanying condensed consolidated financial statements and notes have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") for interim financial information and do not contain all of the information and footnotes required by U.S. GAAP for complete financial statements. For a more complete description of the Company’s business and accounting policies, these condensed consolidated interim financial statements should be read in conjunction with the 2016 audited consolidated financial statements of Kinsale Capital Group, Inc. and its wholly owned subsidiaries (the "Company") included in the Annual Report on Form 10-K. In the opinion of management, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included. Such adjustments consist only of normal recurring items. All significant intercompany balances and transactions have been eliminated in consolidation. Interim results are not necessarily indicative of results of operations for the full year.
Use of Estimates	Use of estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Management periodically reviews its estimates and assumptions.
Prospective Accounting Pronouncements	Prospective accounting pronouncements ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU 2016-01, "Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities," which requires equity investments to be measured at fair value with changes in fair value recognized in net income, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset, and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The amendments in this ASU are effective for public companies for annual reporting periods beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the impact of the adoption of this ASU on its consolidated financial statements, which may introduce additional volatility in the Company's results of operations. ASU 2016-02, Leases (Topic 842) In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" to improve the financial reporting of leasing transactions. Under this ASU, lessees will recognize a right-of-use asset and corresponding liability on the balance sheet for all leases, except for leases covering a period of fewer than 12 months. The liability is to be initially measured at the present value of the future minimum lease payments taking into account renewal options if applicable plus initial incremental direct costs such as commissions. The minimum payments are discounted using the rate implicit in the lease or, if not known, the lessee’s incremental borrowing rate at the inception of the lease. The lessee’s income statement treatment for leases will vary depending on the nature of what is being leased. A financing type lease is present when, among other matters, the asset is being leased for a substantial portion of its economic life or has an end-of-term title transfer or a bargain purchase option as in today’s practice. The payment of the liability set up for such leases will be apportioned between interest and principal; the right-of use asset will be generally amortized on a straight-line basis. If the lease does not qualify as a financing type lease, it will be accounted for on the income statement as rent on a straight-line basis. This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. ASU 2016-13, Financial Instruments – Credit Losses (Topic 326) On June 16, 2016, the FASB issued ASU 2016-13, "Financial Instruments – Credit Losses (Topic 326)" to provide more useful information about the expected credit losses on financial instruments. Current GAAP delays the recognition of credit losses until it is probable a loss has been incurred. The update will require a financial asset measured at amortized cost to be presented at the net amount expected to be collected by means of an allowance for credit losses that runs through net income. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses. However, the amendments would limit the amount of the allowance to the amount by which fair value is below amortized cost. The measurement of credit losses on available-for-sale securities is similar under current GAAP, but the update requires the use of the allowance account through which amounts can be reversed, rather than through an irreversible write-down. This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018. Upon adoption, the update will be applied using the modified-retrospective approach, by which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period presented. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities On March 30, 2017, the FASB issued ASU 2017-08, "Premium Amortization on Purchased Callable Debt Securities," which shortens the amortization period of the premium for certain callable debt securities, from the contractual maturity date to the earliest call date. This ASU is effective in fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including in an interim period. Upon adoption, the update will applied on a modified retrospective basis, with a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period presented. The Company is currently evaluating the impact of the adoption on its consolidated financial statements. There are no other prospective accounting standards which, upon their effective date, would have a material impact on the Company's consolidated financial statements.

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2017
Investments [Abstract]
Available-for-sale Investments	The following tables summarize the Company’s available-for-sale investments at March 31, 2017 and December 31, 2016: March 31, 2017 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,106 $ 6 $ (22 ) $ 12,090 Obligations of states, municipalities and political subdivisions 128,662 1,756 (2,574 ) 127,844 Corporate and other securities 107,713 560 (154 ) 108,119 Asset-backed securities 68,965 241 (218 ) 68,988 Residential mortgage-backed securities 81,885 554 (1,723 ) 80,716 Total fixed maturities 399,331 3,117 (4,691 ) 397,757 Equity securities: Exchange traded funds 17,465 4,952 (7 ) 22,410 Total available-for-sale investments $ 416,796 $ 8,069 $ (4,698 ) $ 420,167 December 31, 2016 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,106 $ 8 $ (16 ) $ 12,098 Obligations of states, municipalities and political subdivisions 124,728 1,470 (2,960 ) 123,238 Corporate and other securities 118,473 550 (233 ) 118,790 Asset-backed securities 73,317 241 (264 ) 73,294 Residential mortgage-backed securities 84,902 585 (1,684 ) 83,803 Total fixed maturities 413,526 2,854 (5,157 ) 411,223 Equity securities: Exchange traded funds 14,350 4,026 (2 ) 18,374 Total available-for-sale investments $ 427,876 $ 6,880 $ (5,159 ) $ 429,597
Available-for-sale Securities in a Loss Position	The following tables summarize gross unrealized losses and fair value for available-for-sale securities by length of time that the securities have continuously been in an unrealized loss position: March 31, 2017 Less than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 11,975 $ (22 ) $ — $ — $ 11,975 $ (22 ) Obligations of states, municipalities and political subdivisions 63,280 (2,517 ) 3,214 (57 ) 66,494 (2,574 ) Corporate and other securities 41,345 (114 ) 6,962 (40 ) 48,307 (154 ) Asset-backed securities 13,408 (194 ) 7,267 (24 ) 20,675 (218 ) Residential mortgage-backed securities 63,050 (1,443 ) 7,279 (280 ) 70,329 (1,723 ) Total fixed maturities 193,058 (4,290 ) 24,722 (401 ) 217,780 (4,691 ) Equity securities: Exchange traded funds 1,013 (7 ) — — 1,013 (7 ) Total $ 194,071 $ (4,297 ) $ 24,722 $ (401 ) $ 218,793 $ (4,698 ) December 31, 2016 Less than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses Estimated Fair Value Gross Unrealized Holding Losses (in thousands) Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 8,980 $ (16 ) $ — $ — $ 8,980 $ (16 ) Obligations of states, municipalities and political subdivisions 70,727 (2,960 ) — — 70,727 (2,960 ) Corporate and other securities 50,274 (145 ) 12,375 (88 ) 62,649 (233 ) Asset-backed securities 14,750 (232 ) 9,961 (32 ) 24,711 (264 ) Residential mortgage-backed securities 65,439 (1,403 ) 7,186 (281 ) 72,625 (1,684 ) Total fixed maturities 210,170 (4,756 ) 29,522 (401 ) 239,692 (5,157 ) Equity securities: Exchange traded funds 388 (2 ) — — 388 (2 ) Total $ 210,558 $ (4,758 ) $ 29,522 $ (401 ) $ 240,080 $ (5,159 )
Contractual Maturities of Available-for-sale Fixed Maturity Securities	The amortized cost and estimated fair value of available-for-sale fixed maturity securities at March 31, 2017 are summarized, by contractual maturity, as follows: March 31, 2017 Amortized Estimated Cost Fair Value (in thousands) Due in one year or less $ 67,053 $ 67,053 Due after one year through five years 56,664 57,157 Due after five years through ten years 24,556 25,124 Due after ten years 100,208 98,719 Asset-backed securities 68,965 68,988 Residential mortgage-backed securities 81,885 80,716 Total fixed maturities $ 399,331 $ 397,757
Net Investment Income	The following table presents the components of net investment income: Three Months Ended March 31, 2017 2016 (in thousands) Interest: Taxable bonds $ 1,537 $ 1,389 Municipal bonds (tax exempt) 794 406 Cash, cash equivalents, and short-term investments 87 8 Dividends on equity securities 110 84 Gross investment income 2,528 1,887 Investment expenses (242 ) (211 ) Net investment income $ 2,286 $ 1,676
Realized Gain (Loss) on Investments	The following table presents realized investment gains and losses for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Realized gains: Sales of fixed maturities $ — $ 387 Total realized gains — 387 Realized losses: Sales of fixed maturities (32 ) — Total realized losses (32 ) — Net investment (losses) gains $ (32 ) $ 387
Change in Unrealized Gains (Losses) on Investments	The following table presents the change in available-for-sale net unrealized gains (losses) by investment type for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Change in net unrealized gains (losses): Fixed maturities $ 729 $ 2,930 Equity securities 921 341 Net increase $ 1,650 $ 3,271

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on a Recurring Basis	The following tables present the balances of assets measured at fair value on a recurring basis as of March 31, 2017 and December 31, 2016 , by level within the fair value hierarchy. March 31, 2017 Level 1 Level 2 Level 3 Total (in thousands) Assets Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,090 $ — $ — $ 12,090 Obligations of states, municipalities and political subdivisions — 127,844 — 127,844 Corporate and other securities — 108,119 — 108,119 Asset-backed securities — 68,988 — 68,988 Residential mortgage-backed securities — 80,716 — 80,716 Total fixed maturities 12,090 385,667 — 397,757 Equity securities: Exchange traded funds 22,410 — — 22,410 Total $ 34,500 $ 385,667 $ — $ 420,167 December 31, 2016 Level 1 Level 2 Level 3 Total (in thousands) Assets Fixed maturities: U.S. Treasury securities and obligations of U.S. government agencies $ 12,098 $ — $ — $ 12,098 Obligations of states, municipalities and political subdivisions — 123,238 — 123,238 Corporate and other securities — 118,790 — 118,790 Asset-backed securities — 73,294 — 73,294 Residential mortgage-backed securities — 83,803 — 83,803 Total fixed maturities 12,098 399,125 — 411,223 Equity securities: Exchange traded funds 18,374 — — 18,374 Total $ 30,472 $ 399,125 $ — $ 429,597

Deferred Policy Acquisition C20

Deferred Policy Acquisition Costs (Tables)	3 Months Ended
	Mar. 31, 2017
Deferred Policy Acquisition Costs Disclosures [Abstract]
Deferred Policy Acquisition Costs	The following table presents the amounts of policy acquisition costs deferred and amortized for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (in thousands) Balance, beginning of period $ 10,150 $ (1,696 ) Policy acquisition costs deferred: Direct commissions 7,880 6,400 Ceding commissions (2,591 ) 2,791 Other underwriting and policy acquisition costs 761 726 Policy acquisition costs deferred 6,050 9,917 Amortization of net policy acquisition costs (5,699 ) (2,916 ) Balance, end of period $ 10,501 $ 5,305

(Tables)

(Tables)	3 Months Ended
	Mar. 31, 2017
Underwriting, Acquisition and Insurance Expenses [Abstract]
Underwriting, acquisition and insurance expenses	Underwriting, acquisition and insurance expenses for the three months ended March 31, 2017 and 2016 consist of the following: Three Months Ended March 31, 2017 2016 (in thousands) Underwriting, acquisition and insurance expenses incurred: Gross commissions $ 7,149 $ 6,406 Ceding commissions (2,346 ) (5,408 ) Other operating expenses 6,491 5,250 Total $ 11,294 $ 6,248

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	The following represents a reconciliation of the numerator and denominator of the basic and diluted earnings per share computations contained in the consolidated financial statements: Three Months Ended March 31, 2017 2016 (in thousands, except per share data) Earnings allocable to common stockholders $ 6,281 $ — Earnings allocable to Class A stockholders $ — $ 5,154 Earnings allocable to Class B stockholders $ — $ 103 Basic earnings per share: Common stock $ 0.30 $ — Class A common stock $ — $ 0.37 Class B common stock $ — $ 0.07 Diluted earnings per share: Common stock $ 0.29 $ — Class A common stock $ — $ 0.37 Class B common stock $ — $ 0.07 Basic weighted average shares outstanding: Common stock 20,969 — Class A common stock — 13,803 Class B common stock — 1,531 Dilutive effect of shares issued under stock compensation arrangements: Common stock - stock options 420 — Class B common stock - unvested restricted stock grants — 7 Diluted weighted average shares outstanding: Common stock 21,389 — Class A common stock — 13,803 Class B common stock — 1,538

Reserves for Unpaid Losses an23

Reserves for Unpaid Losses and Loss Adjustment Expenses (Tables)	3 Months Ended
	Mar. 31, 2017
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]
Schedule of Unpaid Losses and Loss Adjustment Expenses	March 31, 2017 2016 (in thousands) Net reserves for unpaid losses and loss adjustment expenses, beginning of year $ 194,602 $ 124,126 Commutation of MLQS 27,929 24,296 Adjusted net reserves for losses and loss adjustment expenses, beginning of year 222,531 148,422 Incurred losses and loss adjustment expenses: Current year 27,211 20,844 Prior years (5,104 ) (2,723 ) Total net losses and loss adjustment expenses incurred 22,107 18,121 Payments: Current year 333 290 Prior years 11,566 5,133 Total payments 11,899 5,423 Net reserves for unpaid losses and loss adjustment expenses, end of period 232,739 161,120 Reinsurance recoverable on unpaid losses 40,262 74,157 Gross reserves for unpaid losses and loss adjustment expenses, end of period $ 273,001 $ 235,277

Reinsurance (Tables)

Reinsurance (Tables)	3 Months Ended
	Mar. 31, 2017
Reinsurance Disclosures [Abstract]
Effects of Reinsurance	The following table summarizes the effect of reinsurance on premiums written and earned for the three months ended March 31, 2017 and 2016 : Three Months Ended March 31, 2017 2016 (in thousands) Written: Direct $ 52,862 $ 42,990 Assumed — 92 Ceded (8,700 ) 4,713 Net written $ 44,162 $ 47,795 Earned: Direct $ 48,462 $ 43,093 Assumed — 32 Ceded (8,029 ) (12,528 ) Net earned $ 40,433 $ 30,597

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2017
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive Income (Loss)	The following table summarizes the components of other comprehensive income for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 (in thousands) Unrealized gains arising during the period, before income taxes $ 1,618 $ 3,658 Income taxes (566 ) (1,280 ) Unrealized gains arising during the period, net of income taxes 1,052 2,378 Less reclassification adjustment: Net realized investment gains (losses) (32 ) 387 Income taxes 11 (135 ) Reclassification adjustment included in net income (21 ) 252 Other comprehensive income $ 1,073 $ 2,126

Investments Investments (Availa

Investments Investments (Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 416,796	$ 427,876
Gross Unrealized Holding Gains	8,069	6,880
Gross Unrealized Holding Losses	(4,698)	(5,159)
Estimated Fair Value	420,167	429,597
Total fixed maturities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	399,331	413,526
Gross Unrealized Holding Gains	3,117	2,854
Gross Unrealized Holding Losses	(4,691)	(5,157)
Estimated Fair Value	397,757	411,223
U.S. Treasury securities and obligations of U.S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,106	12,106
Gross Unrealized Holding Gains	6	8
Gross Unrealized Holding Losses	(22)	(16)
Estimated Fair Value	12,090	12,098
Obligations of states, municipalities and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	128,662	124,728
Gross Unrealized Holding Gains	1,756	1,470
Gross Unrealized Holding Losses	(2,574)	(2,960)
Estimated Fair Value	127,844	123,238
Corporate and other securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	107,713	118,473
Gross Unrealized Holding Gains	560	550
Gross Unrealized Holding Losses	(154)	(233)
Estimated Fair Value	108,119	118,790
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	68,965	73,317
Gross Unrealized Holding Gains	241	241
Gross Unrealized Holding Losses	(218)	(264)
Estimated Fair Value	68,988	73,294
Residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	81,885	84,902
Gross Unrealized Holding Gains	554	585
Gross Unrealized Holding Losses	(1,723)	(1,684)
Estimated Fair Value	80,716	83,803
Exchange traded funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,465	14,350
Gross Unrealized Holding Gains	4,952	4,026
Gross Unrealized Holding Losses	(7)	(2)
Estimated Fair Value	$ 22,410	$ 18,374

Investments Available-for-Sale

Investments Available-for-Sale Securities in a Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	$ 194,071	$ 210,558
Gross unrealized holding losses, less than 12 months	(4,297)	(4,758)
12 Months or Longer, Estimated Fair Value	24,722	29,522
12 Months or Longer, Gross Unrealized Holding Losses	(401)	(401)
Total Estimated Fair Value	218,793	240,080
Total Gross Unrealized Holding Losses	(4,698)	(5,159)
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	193,058	210,170
Gross unrealized holding losses, less than 12 months	(4,290)	(4,756)
12 Months or Longer, Estimated Fair Value	24,722	29,522
12 Months or Longer, Gross Unrealized Holding Losses	(401)	(401)
Total Estimated Fair Value	217,780	239,692
Total Gross Unrealized Holding Losses	(4,691)	(5,157)
U.S. Treasury securities and obligations of U.S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	11,975	8,980
Gross unrealized holding losses, less than 12 months	(22)	(16)
12 Months or Longer, Estimated Fair Value	0	0
12 Months or Longer, Gross Unrealized Holding Losses	0	0
Total Estimated Fair Value	11,975	8,980
Total Gross Unrealized Holding Losses	(22)	(16)
Obligations of states, municipalities and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	63,280	70,727
Gross unrealized holding losses, less than 12 months	(2,517)	(2,960)
12 Months or Longer, Estimated Fair Value	3,214	0
12 Months or Longer, Gross Unrealized Holding Losses	(57)	0
Total Estimated Fair Value	66,494	70,727
Total Gross Unrealized Holding Losses	(2,574)	(2,960)
Corporate and other securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	41,345	50,274
Gross unrealized holding losses, less than 12 months	(114)	(145)
12 Months or Longer, Estimated Fair Value	6,962	12,375
12 Months or Longer, Gross Unrealized Holding Losses	(40)	(88)
Total Estimated Fair Value	48,307	62,649
Total Gross Unrealized Holding Losses	(154)	(233)
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	13,408	14,750
Gross unrealized holding losses, less than 12 months	(194)	(232)
12 Months or Longer, Estimated Fair Value	7,267	9,961
12 Months or Longer, Gross Unrealized Holding Losses	(24)	(32)
Total Estimated Fair Value	20,675	24,711
Total Gross Unrealized Holding Losses	(218)	(264)
Residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	63,050	65,439
Gross unrealized holding losses, less than 12 months	(1,443)	(1,403)
12 Months or Longer, Estimated Fair Value	7,279	7,186
12 Months or Longer, Gross Unrealized Holding Losses	(280)	(281)
Total Estimated Fair Value	70,329	72,625
Total Gross Unrealized Holding Losses	(1,723)	(1,684)
Exchange traded funds
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	1,013	388
Gross unrealized holding losses, less than 12 months	(7)	(2)
12 Months or Longer, Estimated Fair Value	0	0
12 Months or Longer, Gross Unrealized Holding Losses	0	0
Total Estimated Fair Value	1,013	388
Total Gross Unrealized Holding Losses	$ (7)	$ (2)

Investments Available-for-Sal28

Investments Available-for-Sale Securities in a Loss Position Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)Rate	Dec. 31, 2016USD ($)Rate
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized holding losses, less than 12 months	$ 4,297	$ 4,758
Total Estimated Fair Value	218,793	240,080
Total Gross Unrealized Holding Losses	$ (4,698)	$ (5,159)
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of available-for-sale securities in unrealized loss positions, greater than one year	21	24
Available-for-sale Securities, Percentage of Securities with Ratings of A Minus or Better | Rate	92.10%	92.60%
Gross unrealized holding losses, less than 12 months	$ 4,290	$ 4,756
Number of available-for-sale securities in unrealized loss positions	210	231
Total Estimated Fair Value	$ 217,780	$ 239,692
Total Gross Unrealized Holding Losses	(4,691)	(5,157)
Other-than- temporary impairment losses	0	0
Exchange traded funds
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized holding losses, less than 12 months	$ 7	2
Number of available-for-sale securities in unrealized loss positions	3
Total Estimated Fair Value	$ 1,013	388
Total Gross Unrealized Holding Losses	(7)	(2)
Other-than- temporary impairment losses	$ 0	$ 300

Investments Contractual Maturit

Investments Contractual Maturities of Available-for-Sale Fixed Maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less, Amortized Cost	$ 67,053
Due after one year through five years, Amortized Cost	56,664
Due after five years through ten years, Amortized Cost	24,556
Due after ten years, Amortized Cost	100,208
Total fixed maturities, Amortized Cost	399,331	$ 413,526
Estimated Fair Value
Due in one year or less, Estimated Fair Value	67,053
Due after one year through five years, Estimated Fair Value	57,157
Due after five years through ten years, Estimated Fair Value	25,124
Due after ten years, Estimated Fair Value	98,719
Total fixed maturities	397,757	$ 411,223
Residential mortgage-backed securities
Amortized Cost
Debt Maturities, without Single Maturity Date, Amortized Cost	81,885
Estimated Fair Value
Debt Maturities, without Single Maturity Date, Estimated Fair Value	80,716
Asset-backed securities
Amortized Cost
Debt Maturities, without Single Maturity Date, Amortized Cost	68,965
Estimated Fair Value
Debt Maturities, without Single Maturity Date, Estimated Fair Value	$ 68,988

Investments Net Investment Inco

Investments Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Components of Net Investment Income [Abstract]
Taxable bonds	$ 1,537	$ 1,389
Municipal bonds, tax exempt	794	406
Cash, cash equivalents, and short-term investments	87	8
Dividends on equity securities	110	84
Gross investment income	2,528	1,887
Investment expenses	(242)	(211)
Net investment income	$ 2,286	$ 1,676

Investments Realized Gains (Los

Investments Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Realized Gains [Abstract]
Sales of fixed maturities	$ 0	$ 387
Total realized gains	0	387
Realized Losses [Abstract]
Sales of fixed maturities	(32)	0
Total realized losses	(32)	0
Net investment gains (losses)	$ (32)	$ 387

Investments Unrealized Gain (Lo

Investments Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Change in net unrealized gains (losses)	$ 1,650	$ 3,271
Fixed maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in net unrealized gains (losses)	729	2,930
Exchange traded funds
Schedule of Available-for-sale Securities [Line Items]
Change in net unrealized gains (losses)	$ 921	$ 341

Investments Investment Narrativ

Investments Investment Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Bonds on deposits with state regulatory authorities	$ 7	$ 7
Payable for investments purchased	$ 0.8	$ 0.6

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	$ 397,757	$ 411,223
Equity securities, exchange traded funds	22,410	18,374
Estimated Fair Value	420,167	429,597
Transfers from Level 1 to Level 2	0
Transfers from Level 2 to Level 1	0
Assets measured at fair value on a nonrecurring basis	0	0
Liabilities measured at fair value on a nonrecurring basis	0	0
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value of Investments Measured on Recurring Basis [Line Items]
Estimated Fair Value	12,090	12,098
Obligations of states, municipalities and political subdivisions
Fair Value of Investments Measured on Recurring Basis [Line Items]
Estimated Fair Value	127,844	123,238
Corporate and other securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Estimated Fair Value	108,119	118,790
Asset-backed securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Estimated Fair Value	68,988	73,294
Residential mortgage-backed securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Estimated Fair Value	80,716	83,803
Recurring [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	397,757	411,223
Equity securities, exchange traded funds	22,410	18,374
Estimated Fair Value	420,167	429,597
Recurring [Member] | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	12,090	12,098
Equity securities, exchange traded funds	22,410	18,374
Estimated Fair Value	34,500	30,472
Recurring [Member] | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	385,667	399,125
Equity securities, exchange traded funds	0	0
Estimated Fair Value	385,667	399,125
Recurring [Member] | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Equity securities, exchange traded funds	0	0
Estimated Fair Value	0	0
Recurring [Member] | U.S. Treasury securities and obligations of U.S. government agencies
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	12,090	12,098
Recurring [Member] | U.S. Treasury securities and obligations of U.S. government agencies | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	12,090	12,098
Recurring [Member] | U.S. Treasury securities and obligations of U.S. government agencies | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | U.S. Treasury securities and obligations of U.S. government agencies | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Obligations of states, municipalities and political subdivisions
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	127,844	123,238
Recurring [Member] | Obligations of states, municipalities and political subdivisions | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Obligations of states, municipalities and political subdivisions | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	127,844	123,238
Recurring [Member] | Obligations of states, municipalities and political subdivisions | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Corporate and other securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	108,119	118,790
Recurring [Member] | Corporate and other securities | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Corporate and other securities | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	108,119	118,790
Recurring [Member] | Corporate and other securities | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Asset-backed securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	68,988	73,294
Recurring [Member] | Asset-backed securities | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Asset-backed securities | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	68,988	73,294
Recurring [Member] | Asset-backed securities | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Residential mortgage-backed securities
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	80,716	83,803
Recurring [Member] | Residential mortgage-backed securities | Level 1 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	0	0
Recurring [Member] | Residential mortgage-backed securities | Level 2 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	80,716	83,803
Recurring [Member] | Residential mortgage-backed securities | Level 3 [Member]
Fair Value of Investments Measured on Recurring Basis [Line Items]
Total fixed maturities	$ 0	$ 0

Deferred Policy Acquisition C35

Deferred Policy Acquisition Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance, beginning of period		$ (1,696)
Balance, beginning of period	$ 10,150
Policy acquisition costs deferred:
Direct commissions deferred	7,880	6,400
Ceding commissions deferred	(2,591)	2,791
Other underwriting and policy acquisition costs	761	726
Policy acquisition costs deferred	6,050	9,917
Amortization of net policy acquisition costs	(5,699)	(2,916)
Balance, end of period	$ 10,501	$ 5,305

(Details)

(Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Underwriting, Acquisition and Insurance Expenses [Abstract]
Gross commissions	$ 7,149	$ 6,406
Ceding commissions	(2,346)	(5,408)
Other operating expenses	6,491	5,250
Underwriting, acquisition, and insurance expenses	11,294	6,248
Salaries, bonuses and employee benefits	$ 5,000	$ 4,500

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Line Items]
Earnings allocable to common stockholders	$ 6,281	$ 5,257
Common Stock [Member]
Earnings Per Share [Line Items]
Earnings allocable to common stockholders	$ 6,281	$ 0
Earnings Per Share, Basic [Abstract]
Earnings per share - basic	$ 0.30	$ 0
Earnings Per Share, Diluted [Abstract]
Earnings per share - diluted	$ 0.29	$ 0
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted average shares outstanding - basic	20,969	0
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average shares outstanding - diluted	21,389	0
Class A Common Stock [Member]
Earnings Per Share [Line Items]
Earnings allocable	$ 0	$ 5,154
Earnings Per Share, Basic [Abstract]
Earnings per share - basic	$ 0	$ 0.37
Earnings Per Share, Diluted [Abstract]
Earnings per share - diluted	$ 0	$ 0.37
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted average shares outstanding - basic	0	13,803
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average shares outstanding - diluted	0	13,803
Class B Common Stock [Member]
Earnings Per Share [Line Items]
Earnings allocable	$ 0	$ 103
Earnings Per Share, Basic [Abstract]
Earnings per share - basic	$ 0	$ 0.07
Earnings Per Share, Diluted [Abstract]
Earnings per share - diluted	$ 0	$ 0.07
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted average shares outstanding - basic	0	1,531
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average shares outstanding - diluted	0	1,538
Stock option [Member] | Common Stock [Member]
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Dilutive effect of shares issued under stock compensation arrangements	420	0
Restricted stock [Member] | Class B Common Stock [Member]
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Dilutive effect of shares issued under stock compensation arrangements	0	7

Earnings Per Share Narrative (D

Earnings Per Share Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, Dividend rate		12.00%
Residual Proceeds		75.00%
Antidilutive securities		0
Class B Common Stock [Member]
Class of Stock [Line Items]
Residual Proceeds		25.00%
Restricted stock [Member] | Class B Common Stock [Member]
Class of Stock [Line Items]
Antidilutive securities		0
Stock option [Member]
Class of Stock [Line Items]
Antidilutive securities	0

Reserves for Unpaid Losses an39

Reserves for Unpaid Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Net reserves for unpaid losses and loss adjustment expenses, beginning of year	$ 194,602	$ 124,126
Commutations of MLQS	27,929	24,296
Adjusted net reserves for losses and loss adjustment expenses, beginning of year	222,531	148,422
Incurred losses and loss adjustment expenses:
Current year	27,211	20,844
Prior years	(5,104)	(2,723)
Total net losses and loss adjustment expenses incurred	22,107	18,121
Payments:
Current year	333	290
Prior years	11,566	5,133
Total payments	11,899	5,423
Net reserves for unpaid losses and loss adjustment expenses, end of period	232,739	161,120
Reinsurance recoverable on unpaid losses	40,262	74,157
Gross reserves for unpaid losses and loss adjustment expenses, end of period	$ 273,001	$ 235,277

Reserves for Unpaid Losses an40

Reserves for Unpaid Losses and Loss Adjustment Expenses Reserves for Unpaid Losses and Loss Adjustment Expenses Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Claims Development [Line Items]
Adverse (favorable) development on prior year loss reserves	$ (5,104)	$ (2,723)
Accident Year 2016 [Member]
Claims Development [Line Items]
Adverse (favorable) development on prior year loss reserves	(3,300)
Accident Year 2015 [Member]
Claims Development [Line Items]
Adverse (favorable) development on prior year loss reserves	(2,500)	(1,700)
Accident Year 2013 [Member]
Claims Development [Line Items]
Adverse (favorable) development on prior year loss reserves	$ 900
Accident Year 2014 [Member]
Claims Development [Line Items]
Adverse (favorable) development on prior year loss reserves		$ (800)

Reinsurance (Details)

Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Premiums Written, Net [Abstract]
Direct written premiums	$ 52,862	$ 42,990
Assumed written premiums	0	92
Ceded written premiums	(8,700)	4,713
Net written premiums	44,162	47,795
Premiums Earned, Net [Abstract]
Direct earned premiums	48,462	43,093
Assumed earned premiums	0	32
Ceded earned premiums	(8,029)	(12,528)
Net earned premiums	40,433	30,597
Ceded incurred losses and loss adjustment expenses	2,400	$ 4,400
Reinsurance recoverables on paid losses	300		$ 100
Reinsurance recoverables on unpaid losses	$ 40,300		$ 70,200

Reinsurance Multi-line Quota Sh

Reinsurance Multi-line Quota Share Reinsurance (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2017	Jan. 01, 2016
Multi Line Quota Share Treaty - 2015 [Member]
Reinsurance Retention Policy [Line Items]
Ceding percentage			40.00%
Effect of commutation				$ 36.5
Multi Line Quota Share Treaty - 2016 [Member]
Reinsurance Retention Policy [Line Items]
Provisional ceding commission rate		41.00%
Reinsurance margin		4.00%
Ceding percentage	15.00%
Effect of change in ceding rate					$ 17
Multi Line Quota Share Treaty - 2016 [Member] | Minimum [Member]
Reinsurance Retention Policy [Line Items]
Sliding scale commission		25.00%
Multi Line Quota Share Treaty - 2016 [Member] | Maximum [Member]
Reinsurance Retention Policy [Line Items]
Sliding scale commission		41.00%
Multi Line Quota Share Treaty - 2014 [Member]
Reinsurance Retention Policy [Line Items]
Effect of commutation					$ 34.2

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized gains arising during the period, before income taxes	$ 1,618	$ 3,658
Income taxes	(566)	(1,280)
Unrealized gains arising during the period, net of income tax	1,052	2,378
Less reclassification adjustment [Abstract]
Net realized investment gains (losses)	(32)	387
Income taxes	11	(135)
Reclassification adjustment included in net income	(21)	252
Other comprehensive income	$ 1,073	$ 2,126