10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2021

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                 to                

Commission File Number:    001-09463

RLI Corp.

(Exact name of registrant as specified in its charter)

Delaware	37-0889946
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
9025 North Lindbergh Drive, Peoria, IL	61615
(Address of principal executive offices)	(Zip Code)

(309) 692-1000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock $0.01 par value	RLI	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes ☒    No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes ☒    No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒	Accelerated filer ☐	Non-accelerated filer ☐	Smaller reporting company ☐
			Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐   No ☒

APPLICABLE ONLY TO CORPORATE ISSUERS:

As of April 15, 2021, the number of shares outstanding of the registrant’s Common Stock was 45,203,438.

Table of Contents

			Page
Part I - Financial Information			3
	Item 1.	Financial Statements	3
		Condensed Consolidated Statements of Earnings and Comprehensive Earnings for the Three-Month Periods Ended March 31, 2021 and 2020 (unaudited)	3
		Condensed Consolidated Balance Sheets as of March 31, 2021 and December 31, 2020 (unaudited)	4
		Condensed Consolidated Statements of Shareholders’ Equity for the Three-Month Periods Ended March 31, 2021 and 2020 (unaudited)	5
		Condensed Consolidated Statements of Cash Flows for the Three-Month Periods Ended March 31, 2021 and 2020 (unaudited)	6
		Notes to Unaudited Condensed Consolidated Interim Financial Statements	7
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
	Item 3.	Quantitative and Qualitative Disclosures about Market Risk	30
	Item 4.	Controls and Procedures	30
Part II - Other Information			31
	Item 1.	Legal Proceedings	31
	Item 1a.	Risk Factors	31
	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	31
	Item 3.	Defaults upon Senior Securities	31
	Item 4.	Mine Safety Disclosures	31
	Item 5.	Other Information	31
	Item 6.	Exhibits	31
Signatures			32

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements

RLI Corp. and Subsidiaries

Condensed Consolidated Statements of Earnings and Comprehensive Earnings

(Unaudited)

	For the Three Months
	Ended March 31,
(in thousands, except per share data)	2021			2020
Net premiums earned	$	228,595		$	215,582
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
Consolidated revenue	$	287,331		$	118,117
Losses and settlement expenses		104,892			111,021
Policy acquisition costs		74,990			72,941
Insurance operating expenses		18,796			14,381
Interest expense on debt		1,901			1,897
General corporate expenses		3,342			1,755
Total expenses	$	203,921		$	201,995
Equity in earnings of unconsolidated investees		6,424			4,514
Earnings (loss) before income taxes	$	89,834		$	(79,364	)
Income tax expense (benefit)		16,822			(18,097	)
Net earnings (loss)	$	73,012		$	(61,267	)
Other comprehensive earnings (loss), net of tax		(44,747	)		(13,031	)
Comprehensive earnings (loss)	$	28,265		$	(74,298	)
Basic net earnings (loss) per share	$	1.62		$	(1.36	)
Diluted net earnings (loss) per share	$	1.60		$	(1.36	)
Weighted average number of common shares outstanding:
Basic		45,178			44,920
Diluted		45,674			44,920

See accompanying notes to the unaudited condensed consolidated interim financial statements.

3

RLI Corp. and Subsidiaries

Condensed Consolidated Balance Sheets

(Unaudited)

	March 31,			December 31,
(in thousands, except share and per share data)	2021			2020
ASSETS
Investments and cash:
Fixed income:
Available-for-sale, at fair value	$	2,175,869		$	2,196,626
(amortized cost of $2,096,852 and allowance for credit losses of $375 at 3/31/21)
(amortized cost of $2,061,467 and allowance for credit losses of $397 at 12/31/20)
Equity securities, at fair value (cost - $298,926 at 3/31/21 and $293,190 at 12/31/20)		555,209			524,006
Other invested assets		50,413			54,232
Cash		94,935			62,217
Total investments and cash	$	2,876,426		$	2,837,081
Accrued investment income		16,109			16,126
Premiums and reinsurance balances receivable, net of allowances for uncollectible amounts of $18,172 at 3/31/21 and $17,658 at 12/31/20		149,736			174,628
Ceded unearned premium		111,071			113,488
Reinsurance balances recoverable on unpaid losses and settlement expenses, net of allowances for uncollectible amounts of $8,953 at 3/31/21 and $8,634 at 12/31/20		454,921			443,729
Deferred policy acquisition costs		92,595			88,425
Property and equipment, at cost, net of accumulated depreciation of $70,089 at 3/31/21 and $68,682 at 12/31/20		50,470			51,406
Investment in unconsolidated investees		134,314			128,382
Goodwill and intangibles		53,617			53,719
Other assets		33,181			31,501
TOTAL ASSETS	$	3,972,440		$	3,938,485
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities
Unpaid losses and settlement expenses	$	1,795,275		$	1,750,049
Unearned premiums		590,364			586,386
Reinsurance balances payable		26,560			42,265
Funds held		85,572			81,747
Income taxes-deferred		74,624			80,235
Bonds payable, long-term debt		149,536			149,489
Accrued expenses		45,784			75,925
Other liabilities		49,939			36,411
TOTAL LIABILITIES	$	2,817,654		$	2,802,507
Shareholders’ Equity
Common stock ($0.01 par value)
(Shares authorized - 200,000,000 at 3/31/21 and 12/31/20)
(68,133,652 shares issued, 45,203,438 shares outstanding at 3/31/21)
(68,072,794 shares issued, 45,142,580 shares outstanding at 12/31/20)	$	681		$	681
Paid-in capital		336,757			335,365
Accumulated other comprehensive earnings		63,967			108,714
Retained earnings		1,146,380			1,084,217
Deferred compensation		7,926			8,292
Less: Treasury shares, at cost
(22,930,214 shares at 3/31/21 and 12/31/20)		(400,925	)		(401,291	)
TOTAL SHAREHOLDERS’ EQUITY	$	1,154,786		$	1,135,978
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	3,972,440		$	3,938,485

See accompanying notes to the unaudited condensed consolidated interim financial statements.

4

RLI Corp. and Subsidiaries

Condensed Consolidated Statements of Shareholders’ Equity

(Unaudited)

										Accumulated
										Other
			Total							Comprehensive									Treasury
	Common		Shareholders’			Common		Paid-in		Earnings			Retained			Deferred			Shares
(in thousands, except share and per share data)	Shares		Equity			Stock		Capital		(Loss)			Earnings			Compensation			at Cost
Balance, January 1, 2020		44,869,015	$	995,388		$	678	$	321,190	$	52,473		$	1,014,046		$	7,980		$	(400,979	)
Cumulative-effect adjustment from ASU 2016-13		—		1,095			—		—		22			1,073			—			—
Net earnings (loss)		—		(61,267	)		—		—		—			(61,267	)		—			—
Other comprehensive earnings (loss), net of tax		—		(13,031	)		—		—		(13,031	)		—			—			—
Deferred compensation		—		—			—		—		—			—			(1,010	)		1,010
Share-based compensation		53,641		3,863			1		3,862		—			—			—			—
Dividends and dividend equivalents ($0.23 per share)		—		(10,343	)		—		—		—			(10,343	)		—			—
Balance, March 31, 2020		44,922,656	$	915,705		$	679	$	325,052	$	39,464		$	943,509		$	6,970		$	(399,969	)
										Accumulated
										Other
			Total							Comprehensive									Treasury
	Common		Shareholders’			Common		Paid-in		Earnings			Retained			Deferred			Shares
(in thousands, except share and per share data)	Shares		Equity			Stock		Capital		(Loss)			Earnings			Compensation			at Cost
Balance, January 1, 2021		45,142,580	$	1,135,978		$	681	$	335,365	$	108,714		$	1,084,217		$	8,292		$	(401,291	)
Net earnings (loss)		—		73,012			—		—		—			73,012			—			—
Other comprehensive earnings (loss), net of tax		—		(44,747	)		—		—		(44,747	)		—			—			—
Deferred compensation		—		—			—		—		—			—			(366	)		366
Share-based compensation		60,858		1,392			—		1,392		—			—			—			—
Dividends and dividend equivalents ($0.24 per share)		—		(10,849	)		—		—		—			(10,849	)		—			—
Balance, March 31, 2021		45,203,438	$	1,154,786		$	681	$	336,757	$	63,967		$	1,146,380		$	7,926		$	(400,925	)

See accompanying notes to the unaudited condensed consolidated interim financial statements.

5

RLI Corp. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Net cash provided by (used in) operating activities	$	60,287		$	(5,767	)
Cash Flows from Investing Activities
Purchase of:
Fixed income securities, available-for-sale	$	(145,121	)	$	(69,233	)
Equity securities		(31,957	)		(31,811	)
Property and equipment		(887	)		(1,910	)
Other		(4,323	)		(2,611	)
Proceeds from sale of:
Fixed income securities, available-for-sale		21,300			20,414
Equity securities		47,638			38,042
Other		521			2,267
Proceeds from call or maturity of:
Fixed income securities, available-for-sale		96,285			54,890
Net cash provided by (used in) investing activities	$	(16,544	)	$	10,048
Cash Flows from Financing Activities
Cash dividends paid	$	(10,838	)	$	(10,332	)
Proceeds from (payments related to) stock option exercises		(187	)		2,549
Net cash used in financing activities	$	(11,025	)	$	(7,783	)
Net increase (decrease) in cash	$	32,718		$	(3,502	)
Cash at the beginning of the period		62,217			46,203
Cash at March 31	$	94,935		$	42,701

See accompanying notes to the unaudited condensed consolidated interim financial statements.

6

NOTES TO UNAUDITED CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

A. BASIS OF PRESENTATION

The unaudited condensed consolidated interim financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial reporting and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all the disclosures required by GAAP for complete financial statements. As such, these unaudited condensed consolidated interim financial statements should be read in conjunction with our 2020 Annual Report on Form 10-K. Management believes that the disclosures are adequate to make the information presented not misleading, and all normal and recurring adjustments necessary to present fairly the financial position at March 31, 2021 and the results of operations of RLI Corp. (the Company) and subsidiaries for all periods presented have been made. The results of operations for any interim period are not necessarily indicative of the operating results for a full year. Certain reclassifications were made to 2020 to conform to the classifications used in the current year.

The preparation of the unaudited condensed consolidated interim financial statements requires management to make estimates and assumptions relating to the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated interim financial statements and the reported amounts of revenue and expenses during the period. These estimates are inherently subject to change and actual results could differ significantly from these estimates.

B. ADOPTED ACCOUNTING STANDARDS

No new accounting standards applicable in 2021 impact our financial statements.

C. PROSPECTIVE ACCOUNTING STANDARDS

There are no prospective accounting standards which would have a material impact on our financial statements as of March 31, 2021.

D. REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on unpaid losses and settlement expenses are reported separately as an asset, rather than being netted with the related liability, since reinsurance does not relieve the Company of our liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. We continually monitor the financial condition of our reinsurers and actively follow up on any past due or disputed amounts. As part of our monitoring efforts, we review their annual financial statements and Securities and Exchange Commission (SEC) filings for those reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the AM Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including a segment-based analysis using the average default rating percentage by S&P rating, which assists the Company in assessing the sufficiency of the existing allowance. Additionally, we perform an in-depth reinsurer financial condition analysis prior to the renewal of our reinsurance placements.

Our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover. Once regulatory action (such as receivership, finding of insolvency, order of conservation or order of liquidation) is taken against a reinsurer, all paid and unpaid balances recoverable for the reinsurer are specifically identified and expensed into our allowance for estimated unrecoverable amounts from reinsurers. We then re-evaluate the remaining allowance and determine whether the balance is sufficient as detailed above and if needed, an additional allowance is recognized and income charged.

The allowances for uncollectible amounts on paid and unpaid reinsurance recoverables were $15.9 million and $9.0 million, respectively, at March 31, 2021. At December 31, 2020, the amounts were $15.9 million and $8.6 million, respectively. Changes in the allowances were due to changes in the amount of reinsurance balances outstanding, the composition of reinsurers from whom the balances were recoverable and their associated S&P default ratings. No write-offs were applied to the allowances in the first three months of 2021 and less than $0.1 million was recovered. We have no receivables with a due date that extends beyond one year that are not included in our allowance for uncollectible amounts.

7

E. INTANGIBLE ASSETS

The composition of goodwill and intangible assets at March 31, 2021 and December 31, 2020 is detailed in the following table:

	March 31,		December 31,
(in thousands)	2021		2020
Goodwill
Surety	$	40,816	$	40,816
Casualty		5,246		5,246
Total goodwill	$	46,062	$	46,062
Intangibles
Indefinite-lived intangibles - state insurance licenses		7,500		7,500
Definite-lived intangibles, net of accumulated amortization of $3,980 at 3/31/21 and $3,878 at 12/31/20		55		157
Total intangibles	$	7,555	$	7,657
Total goodwill and intangibles	$	53,617	$	53,719

All definite-lived intangible assets are amortized based on their estimated useful lives. Amortization of intangible assets was $0.1 million for the first quarter of 2021 and 2020.

Annual impairment assessments were performed on our goodwill and state insurance license indefinite-lived intangible asset during 2020. Based upon these reviews, none of the assets were impaired. In addition, there were no triggering events as of March 31, 2021 that would suggest an updated impairment test would be needed for our goodwill and intangible assets.

F. EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items. The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the unaudited condensed consolidated interim financial statements:

	For the Three Months						For the Three Months
	Ended March 31, 2021						Ended March 31, 2020
	Income		Shares		Per Share		Income			Shares		Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)		Amount		(Numerator)			(Denominator)		Amount
Basic EPS
Earnings (loss) available to common shareholders	$	73,012		45,178	$	1.62	$	(61,267	)		44,920	$	(1.36	)
Effect of Dilutive Securities
Stock options and restricted stock units		—		496				—			—
Diluted EPS
Earnings (loss) available to common shareholders	$	73,012		45,674	$	1.60	$	(61,267	)		44,920	$	(1.36	)
Anti-dilutive options excluded from diluted EPS				—							94

G. COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent. Other comprehensive earnings (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax benefit of $11.9 million and $3.5 million for the first quarter of 2021 and 2020, respectively.

Unrealized losses, net of tax, recognized in other comprehensive earnings (loss) were $44.7 million for the first three months of 2021, compared to $13.0 million during the same period last year. The unrealized losses were attributable to increased interest rates in both periods, which decreased the fair value of securities held in the fixed income portfolio.

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The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the unaudited condensed consolidated interim financial statements:

(in thousands)	For the Three Months
	Ended March 31,
Unrealized Gains/Losses on Available-for-Sale Securities	2021			2020
Beginning balance	$	108,714		$	52,473
Cumulative-effect adjustment of ASU 2016-13		—			22
Adjusted beginning balance	$	108,714		$	52,495
Other comprehensive loss before reclassifications		(43,795	)		(11,880	)
Amounts reclassified from accumulated other comprehensive earnings		(952	)		(1,151	)
Net current-period other comprehensive loss	$	(44,747	)	$	(13,031	)
Ending balance	$	63,967		$	39,464
Balance of securities for which an allowance for credit losses has been recognized in net earnings	$	463		$	5,727

Credit losses on or the sale of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table:

	Amount Reclassified from Accumulated Other
(in thousands)	Comprehensive Earnings
	For the Three Months
Component of Accumulated	Ended March 31,						Affected line item in the
Other Comprehensive Earnings	2021			2020			Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	1,183		$	2,306		Net realized gains
		22			(849	)	Credit losses presented within net realized gains
	$	1,205		$	1,457		Earnings (loss) before income taxes
		(253	)		(306	)	Income tax benefit (expense)
	$	952		$	1,151		Net earnings (loss)

H. FAIR VALUE MEASUREMENTS

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. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

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Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All corporate, agency, government and municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Commercial Mortgage-backed Securities (CMBS) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate MBS and CMBS volatility, an option adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMBS and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMBS and ABS are deemed Level 2.

Regulation D Private Placement Securities: All Regulation D privately-placed bonds are classified as corporate securities and deemed Level 3. The pricing vendor evaluation methodology for these securities includes a combination of observable and unobservable inputs. Observable inputs include public corporate spread matrices classified by sector, rating and average life, as well as investment and non-investment grade matrices created from fixed income indices. Unobservable inputs include a liquidity spread premium calculated based on public corporate spread and private corporate spread matrices. The quantitative detail of the liquidity spread premium is neither provided nor reasonably available to the Company. An increase to the credit spread assumptions would result in a lower fair value.

For all of our fixed income securities classified as Level 2, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. If discrepancies are found in our comparisons, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 fixed income securities provided by our pricing services are reasonable.

Common Stock: As of March 31, 2021, nearly all of our common stock holdings were traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity securities not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy.

I. RISKS AND UNCERTAINTIES

Certain risks and uncertainties are inherent to our day-to-day operations. Adverse changes in the economy could lower demand for our insurance products or negatively impact our investment results, both of which could have an adverse effect on the revenue and profitability of our operations. The COVID-19 pandemic may continue to result in significant disruptions in economic activity and financial markets. The cumulative effects of any public health outbreak could reduce demand for our insurance policies, result in increased level of losses, settlement expenses or other operating costs, reduce the market value of invested assets held by the Company or negatively impact the fair value of our goodwill.

2. INVESTMENTS

Our investments are primarily composed of fixed income debt securities and common stock equity securities. We carry our equity securities at fair value and categorize all of our debt securities as available-for-sale, which are carried at fair value.

Realized gains and losses on disposition of investments are based on specific identification of the investments sold on the settlement date. The following is a summary of the disposition of fixed income and equity securities for the three-month periods ended March 31, 2021 and 2020:

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Sales	Proceeds		Gross Realized					Net Realized
(in thousands)	From Sales		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	21,273	$	1,003	$	(27	)	$	976
Equities		47,638		14,233		(1,150	)		13,083
2020
Available-for-sale	$	19,858	$	2,270	$	(102	)	$	2,168
Equities		38,042		17,792		(2,633	)		15,159

Calls/Maturities			Gross Realized					Net Realized
(in thousands)	Proceeds		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	96,285	$	255	$	(48	)	$	207
2020
Available-for-sale	$	54,890	$	145	$	(7	)	$	138

FAIR VALUE MEASUREMENTS

Assets measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 are summarized below:

	As of March 31, 2021
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	170,422	$	—	$	170,422
U.S. agency			—		31,666		—		31,666
Non-U.S. government & agency			—		8,555		—		8,555
Agency MBS			—		369,212		—		369,212
ABS/CMBS/MBS*			—		218,232		—		218,232
Corporate			—		810,751		22,452		833,203
Municipal			—		544,579		—		544,579
Total fixed income securities - available-for-sale		$	—	$	2,153,417	$	22,452	$	2,175,869
Equity securities			555,105		104		—		555,209
Other invested assets			—		—		—		—
Total		$	555,105	$	2,153,521	$	22,452	$	2,731,078

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

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	As of December 31, 2020
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	183,357	$	—	$	183,357
U.S. agency			—		32,872		—		32,872
Non-U.S. government & agency			—		10,965		—		10,965
Agency MBS			—		402,071		—		402,071
ABS/CMBS/MBS*			—		218,373		—		218,373
Corporate			—		798,794		17,798		816,592
Municipal			—		532,396		—		532,396
Total fixed income securities - available-for-sale		$	—	$	2,178,828	$	17,798	$	2,196,626
Equity securities			523,923		83		—		524,006
Other invested assets			6,068		—		—		6,068
Total		$	529,991	$	2,178,911	$	17,798	$	2,726,700

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

The following table summarizes changes in the balance of Regulation D private placement fixed income securities whose fair value was measured using significant unobservable inputs (Level 3).

(in thousands)	Level 3 Securities
Balance as of January 1, 2021	$	17,798
Net realized and unrealized gains (losses)
Included in net earnings as a part of:
Net investment income		(13	)
Net realized gains		(192	)
Included in other comprehensive earnings (loss)		(606	)
Total net realized and unrealized gains (losses)	$	(811	)
Purchases		5,465
Balance as of March 31, 2021	$	22,452
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in net realized gains	$	(192	)
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in other comprehensive earnings	$	(606	)

The amortized cost and fair value of available-for-sale fixed income securities by contractual maturity as of March 31, 2021 were as follows:

	March 31, 2021
(in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	105,159	$	106,340
Due after one year through five years		512,686		539,027
Due after five years through 10 years		522,850		552,085
Due after 10 years		382,756		390,973
ABS/CMBS/MBS*		573,401		587,444
Total available-for-sale	$	2,096,852	$	2,175,869

* Asset-backed, commercial mortgage-backed and mortgage-backed securities

The amortized cost and fair value of available-for-sale securities at March 31, 2021 and December 31, 2020 are presented in the tables below. Amortized cost does not include the $14.9 million of accrued interest receivable as of March 31, 2021 and December 31, 2020.

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	March 31, 2021
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	161,956	$	—		$	9,539	$	(1,073	)	$	170,422
U.S. agency		28,883		—			2,783		—			31,666
Non-U.S. government & agency		8,296		—			407		(148	)		8,555
Agency MBS		358,224		—			14,007		(3,019	)		369,212
ABS/CMBS/MBS*		215,177		—			3,713		(658	)		218,232
Corporate		796,042		(375	)		42,200		(4,664	)		833,203
Municipal		528,274		—			21,781		(5,476	)		544,579
Total Fixed Income	$	2,096,852	$	(375	)	$	94,430	$	(15,038	)	$	2,175,869

	December 31, 2020
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	170,110	$	—		$	13,504	$	(257	)	$	183,357
U.S. agency		28,902		—			3,970		—			32,872
Non-U.S. government & agency		10,298		—			667		—			10,965
Agency MBS		384,015		—			18,789		(733	)		402,071
ABS/CMBS/MBS*		213,223		(17	)		5,580		(413	)		218,373
Corporate		753,404		(380	)		64,501		(933	)		816,592
Municipal		501,515		—			31,099		(218	)		532,396
Total Fixed Income	$	2,061,467	$	(397	)	$	138,110	$	(2,554	)	$	2,196,626

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

Allowance for Credit Losses and Unrealized Losses on Fixed Income Securities

We adopted ASU 2016-13, Financial Instruments – Credit Losses, on January 1, 2020, which required the recognition of a reversable allowance for credit losses on available-for-sale fixed income securities. Available-for-sale securities in the fixed income portfolio are subjected to several criteria to determine if those securities should be included in the allowance for expected credit loss evaluation, including:

• Changes in technology that may impair the earnings potential of the investment,

• The discontinuance of a segment of business that may affect future earnings potential,

• Reduction of or non-payment of interest and/or principal,

• Specific concerns related to the issuer’s industry or geographic area of operation,

• Significant or recurring operating losses, poor cash flows and/or deteriorating liquidity ratios and

• Downgrades in credit quality by a major rating agency.

If changes in interest rates and credit spreads do not reasonably explain the unrealized loss for an available-for-sale security or if any of the criteria above indicate a potential credit loss, the security is subjected to a discounted cash flow analysis. Inputs into the discounted cash flow analysis include prepayment assumptions for structured securities, default rates and recoverability rates based on credit rating. The allowance for any security is limited to the amount that the securities fair value is below amortized cost. As of March 31, 2021, the discounted cash flow analysis resulted in an allowance for credit losses on 16 securities. The following table presents changes in the allowance for expected credit losses on available-for-sale securities:

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	Three Months Ended March 31,
(in thousands)	2021			2020
Beginning balance	$	397		$	—
Adoption impact of ASU 2016-13		-			28
Increase to allowance from securities for which credit losses were not previously recorded		-			624
Net increase (decrease) from securities that had an allowance at the beginning of the period		(22	)		226
Balance as of March 31,	$	375		$	878

As of March 31, 2021, in addition to the securities included in the allowance for credit losses, the fixed income portfolio contained 320 securities with an unrealized loss position for which an allowance for credit losses had not been recorded. The $15.0 million in associated unrealized losses represents 0.7 percent of the fixed income portfolio’s cost basis and 0.5 percent of total invested assets. Isolated to these securities, unrealized losses increased through the first three months of 2021, as interest rates increased during the period. Of the total 320 securities, 32 have been in an unrealized loss position for 12 consecutive months or longer. The following table illustrates the total value of fixed income securities that were in an unrealized loss position as of March 31, 2021 and December 31, 2020 after factoring in the allowance for credit losses. All fixed income securities continue to pay the expected coupon payments and we believe we will recover the amortized cost basis of available-for-sale securities that remain in an unrealized loss position.

	March 31, 2021									December 31, 2020
(in thousands)	< 12 Mos.			12 Mos. & Greater			Total			< 12 Mos.			12 Mos. & Greater			Total
U.S. government
Fair value	$	4,864		$	—		$	4,864		$	5,680		$	—		$	5,680
Amortized cost		5,937			—			5,937			5,937			—			5,937
Unrealized loss	$	(1,073	)	$	—		$	(1,073	)	$	(257	)	$	—		$	(257	)
Non-U.S. government
Fair value	$	2,852		$	—		$	2,852		$	—		$	—		$	—
Amortized cost		3,000			—			3,000			—			—			—
Unrealized Loss	$	(148	)	$	—		$	(148	)	$	—		$	—		$	—
Agency MBS
Fair value	$	92,446		$	—		$	92,446		$	43,999		$	—		$	43,999
Amortized cost		95,465			—			95,465			44,732			—			44,732
Unrealized loss	$	(3,019	)	$	—		$	(3,019	)	$	(733	)	$	—		$	(733	)
ABS/CMBS/MBS*
Fair value	$	55,703		$	7,235		$	62,938		$	32,771		$	16,161		$	48,932
Amortized cost		56,341			7,255			63,596			33,094			16,251			49,345
Unrealized loss	$	(638	)	$	(20	)	$	(658	)	$	(323	)	$	(90	)	$	(413	)
Corporate
Fair value	$	165,717		$	14,193		$	179,910		$	52,655		$	6,235		$	58,890
Amortized cost		170,204			14,370			184,574			53,440			6,383			59,823
Unrealized loss	$	(4,487	)	$	(177	)	$	(4,664	)	$	(785	)	$	(148	)	$	(933	)
Municipal
Fair value	$	115,596		$	—		$	115,596		$	25,676		$	—		$	25,676
Amortized cost		121,072			—			121,072			25,894			—			25,894
Unrealized loss	$	(5,476	)	$	—		$	(5,476	)	$	(218	)	$	—		$	(218	)
Total fixed income
Fair value	$	437,178		$	21,428		$	458,606		$	160,781		$	22,396		$	183,177
Amortized cost		452,019			21,625			473,644			163,097			22,634			185,731
Unrealized loss	$	(14,841	)	$	(197	)	$	(15,038	)	$	(2,316	)	$	(238	)	$	(2,554	)

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

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The following table shows the composition of the fixed income securities in unrealized loss positions, after factoring in the allowance for credit losses, at March 31, 2021 by the National Association of Insurance Commissioners (NAIC) rating and the generally equivalent Standard & Poor’s (S&P) and Moody’s ratings. The vast majority of the securities are rated by S&P and/or Moody’s.

	Equivalent	Equivalent	(dollars in thousands)
NAIC	S&P	Moody’s	Amortized				Unrealized			Percent
Rating	Rating	Rating	Cost		Fair Value		Loss			to Total
1	AAA/AA/A	Aaa/Aa/A	$	365,229	$	352,591	$	(12,638	)		84.1	%
2	BBB	Baa		55,575		54,161		(1,414	)		9.4	%
3	BB	Ba		23,838		23,455		(383	)		2.5	%
4	B	B		26,201		25,616		(585	)		3.9	%
5	CCC	Caa		2,801		2,783		(18	)		0.1	%
6	CC or lower	Ca or lower		-		-		-			0.0	%
		Total	$	473,644	$	458,606	$	(15,038	)		100.0	%

Unrealized Gains and Losses on Equity Securities

Unrealized gains recognized on equity securities still held as of March 31, 2021 were $41.2 million during the first quarter. Comparatively, unrealized losses recognized on equity securities still held as of March 31, 2020 were $115.2 million during the first quarter.

Other Invested Assets

We had $50.4 million of other invested assets at March 31, 2021, compared to $54.2 million at December 31, 2020. Other invested assets include investments in low income housing tax credit partnerships (LIHTC), membership in the Federal Home Loan Bank of Chicago (FHLBC), and investments in private funds. Our LIHTC investments are carried at amortized cost and our investment in FHLBC stock is carried at cost. Due to the nature of the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

Our LIHTC interests had a balance of $19.4 million at March 31, 2021, compared to $20.3 million at December 31, 2020 and recognized a total tax benefit of $0.9 million during the first quarters of 2021 and 2020. Our unfunded commitment for our LIHTC investments totaled $2.7 million at March 31, 2021 and will be paid out in installments through 2035.

As of March 31, 2021, $10.2 million of investments were pledged as collateral with the FHLBC to ensure timely access to the secured lending facility that ownership of FHLBC stock provides. As of and during the three-month period ended March 31, 2021, there were no outstanding borrowings with the FHLBC.

Our investments in private funds totaled $27.8 million at March 31, 2021, compared to $32.1 million at December 31, 2020, and we had $6.5 million of associated unfunded commitments at March 31, 2021. Our interest in private funds is generally restricted from being transferred or otherwise redeemed without prior consent by the respective entities and the timed dissolution of the partnerships would trigger redemption. At December 31, 2020, we had a publicly traded common stock with short-term restrictions that limited our ability to sell the security without prior approval. During the first quarter of 2021, our investment in this security became unrestricted and the investment was included in our equity portfolio as of March 31, 2021.

Cash

Cash consists of uninvested balances in bank accounts. We had a cash balance of $94.9 million at March 31, 2021, compared to $62.2 million at December 31, 2020.

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3. HISTORICAL LOSS AND LAE DEVELOPMENT

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the first three months of 2021 and 2020:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Unpaid losses and LAE at beginning of year
Gross	$	1,750,049		$	1,574,352
Ceded		(443,729	)		(384,517	)
Net	$	1,306,320		$	1,189,835
Adoption impact of ASU 2016-13 on reinsurance balances recoverable	$	—		$	(1,345	)
Increase (decrease) in incurred losses and LAE
Current accident year	$	142,013		$	126,194
Prior accident years		(37,121	)		(15,173	)
Total incurred	$	104,892		$	111,021
Loss and LAE payments for claims incurred
Current accident year	$	(5,962	)	$	(9,295	)
Prior accident years		(64,896	)		(81,897	)
Total paid	$	(70,858	)	$	(91,192	)
Net unpaid losses and LAE at March 31	$	1,340,354		$	1,208,319
Unpaid losses and LAE at March 31
Gross	$	1,795,275		$	1,574,760
Ceded		(454,921	)		(366,441	)
Net	$	1,340,354		$	1,208,319

We adopted ASU 2016-13, Financial Instruments – Credit Losses, on January 1, 2020, which required financial assets, including reinsurance balances recoverable, to be presented at the net amount expected to be collected. We previously maintained an allowance for uncollectible reinsurance balances prior to the adoption of this update. However, in order to comply with the updated requirements, we released $1.3 million of the allowance on uncollectible reinsurance balances upon adoption. The implementation guidance required the cumulative-effect adjustment be made to the beginning balance of retained earnings, rather than through net earnings like historical changes have and ongoing modifications will continue to be recorded.

For the first three months of 2021, incurred losses and LAE included $37.1 million of favorable development on prior years’ loss reserves. General liability, transportation, small commercial, professional services, personal umbrella and surety were drivers of the favorable development. No products experienced significant adverse development.

For the first three months of 2020, incurred losses and LAE included $15.2 million of favorable development on prior years’ loss reserves. The majority of products experienced modest amounts of favorable development on prior accident years, with notable contributions from transportation, marine, small commercial and surety. No products experienced significant adverse development.

Actuarial models base future emergence on historic experience, with adjustments for current trends, and the appropriateness of these assumptions involved more uncertainty as of March 31, 2021. We expect there will be impacts to the timing of loss emergence and ultimate loss ratios for certain coverages we underwrite as a result of the spread of COVID-19 and the related economic shutdown. The industry is experiencing new issues, including the postponement of civil court cases, the extension of various statutes of limitations, changes in settlement trends and a significant reduction in economic activity and insured exposure in some classes. Our recorded reserves include consideration of these factors, but the duration and degree to which these issues persist, along with potential legislative, regulatory or judicial actions, could result in loss reserve deficiencies and reduce earnings in future periods.

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4. INCOME TAXES

Our effective tax rate for the three months ended March 31, 2021 was 18.7 percent, compared to 22.8 percent for the same period in 2020. Effective rates are dependent upon components of pretax earnings and the related tax effects. The effective rate was lower for the first three months of 2021 as tax-favored adjustments reduced income tax expense, while tax-favored adjustments increased the tax benefit recognized in the first quarter of 2020 as a result of pretax losses.

Income tax expense attributable to income from operations for the three-month periods ended March 31, 2021 and 2020 differed from the amounts computed by applying the U.S. federal tax rate of 21 percent to pretax income by the items detailed in the below table. In interim periods, income taxes are adjusted to reflect the effective tax rate we anticipate for the year, with adjustments flowing through the other items, net line.

	For the Three Months Ended March 31,
	2021							2020
(in thousands)	Amount			%				Amount			%
Provision for income taxes at the statutory rate of 21%	$	18,865			21.0		%	$	(16,666	)		21.0		%
Increase (reduction) in taxes resulting from:
Excess tax benefit on share-based compensation		(1,924	)		(2.1	)	%		(1,029	)		1.3		%
Tax exempt interest income		(319	)		(0.4	)	%		(313	)		0.4		%
Dividends received deduction		(236	)		(0.3	)	%		(271	)		0.3		%
Investment tax credit		(801	)		(0.9	)	%		(1,321	)		1.7		%
ESOP dividends paid deduction		(130	)		(0.1	)	%		(132	)		0.2		%
Nondeductible expenses		411			0.5		%		203			(0.3	)	%
Other items, net		956			1.0		%		1,432			(1.8	)	%
Total tax expense (benefit)	$	16,822			18.7		%	$	(18,097	)		22.8		%

5. STOCK BASED COMPENSATION

Our RLI Corp. Long-Term Incentive Plan (2010 LTIP) was in place from 2010 to 2015. The 2010 LTIP provided for equity-based compensation, including stock options, up to a maximum of 4,000,000 shares of common stock (subject to adjustment for changes in our capitalization and other events). Between 2010 and 2015, we granted 2,878,000 stock options under the 2010 LTIP. The 2010 LTIP was replaced in 2015.

In 2015, our shareholders approved the 2015 RLI Corp. Long-Term Incentive Plan (2015 LTIP), which provides for equity-based compensation and replaced the 2010 LTIP. In conjunction with the adoption of the 2015 LTIP, effective May 7, 2015, options were no longer granted under the 2010 LTIP. Awards under the 2015 LTIP may be in the form of restricted stock, restricted stock units, stock options (non-qualified only), stock appreciation rights, performance units as well as other stock-based awards. Eligibility under the 2015 LTIP is limited to employees and directors of the Company or any affiliate. The granting of awards under the 2015 LTIP is solely at the discretion of the board of directors. The maximum number of shares of common stock available for distribution under the 2015 LTIP is 4,000,000 shares (subject to adjustment for changes in our capitalization and other events). Since the plan’s approval in 2015, we have granted 2,667,865 awards under the 2015 LTIP, including 44,496 thus far in 2021.

Compensation expense is based on the probable number of awards expected to vest. The total compensation expense related to equity awards was $1.6 million and $1.3 million in the first three months of 2021 and 2020, respectively, and the total income tax benefit was $0.3 million and $0.2 million for each period, respectively. Total unrecognized compensation expense relating to outstanding and unvested awards was $5.4 million, which will be recognized over the weighted average vesting period of 2.56 years.

Stock Options

Under the 2015 LTIP, as under the 2010 LTIP, we grant stock options for shares with an exercise price equal to the fair market value of the shares at the date of grant (subject to adjustments for changes in our capitalization, special dividends and other events as set forth in such plans). Options generally vest and become exercisable ratably over a five-year period and expire eight years after grant.

For most participants, the requisite service period and vesting period will be the same. For participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75, the requisite service period is deemed to be met and options are immediately expensed on the date of grant. For participants who will become retirement eligible during

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the vesting period, the requisite service period over which expense is recognized is the period between the grant date and the attainment of retirement eligibility. Shares issued upon option exercise are newly issued shares.

The following tables summarize option activity for the three-month period ended March 31, 2021:

						Weighted		Aggregate
				Weighted		Average		Intrinsic
				Average		Remaining		Value
	Options			Exercise Price		Contractual Life		(in 000’s)
Outstanding options at January 1, 2021		1,632,334		$	70.67
Options granted		44,496			97.64
Options exercised		(121,645	)		56.04
Options canceled/forfeited		(600	)		93.24
Outstanding options at March 31, 2021		1,554,585		$	72.57		5.17	$	60,622
Exercisable options at March 31, 2021		563,215		$	61.80		3.75	$	28,029

The intrinsic value, which is the difference between the fair value and the exercise price, of options exercised was $6.9 million and $2.5 million during the first quarter of 2021 and 2020, respectively.

The fair value of options was estimated using a Black-Scholes based option pricing model with the following weighted average grant-date assumptions and weighted average fair values as of March 31:

	2021			2020
Weighted-average fair value of grants	$	13.82		$	14.48
Risk-free interest rates		0.27	%		1.54	%
Dividend yield		2.30	%		2.69	%
Expected volatility		22.67	%		22.68	%
Expected option life		4.96	years		4.99	years

The risk-free rate was determined based on U.S. treasury yields that most closely approximated the option’s expected life. The dividend yield was determined based on the average annualized quarterly dividends paid during the most recent five-year period and incorporated a consideration for special dividends paid in recent history. The expected volatility was calculated based on the median of the rolling volatilities for the expected life of the options. The expected option life was determined based on historical exercise behavior and the assumption that all outstanding options will be exercised at the midpoint of the current date and remaining contractual term, adjusted for the demographics of the current year’s grant.

Restricted Stock Units

In addition to stock options, restricted stock units (RSUs) are granted with a value equal to the closing stock price of the Company’s stock on the dates the units are granted. For employees, these units generally have a three-year cliff vesting, but have an accelerated vesting feature for participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75. For directors, these units vest on the earlier of one year from the date of grant or the next annual shareholders meeting. In addition, the RSUs have dividend participation, which accrue as additional units and are settled with granted stock units at the end of the vesting period.

				Weighted
				Average
				Grant Date
	RSUs			Fair Value
Nonvested at January 1, 2021		47,658		$	81.53
Reinvested		102			112.16
Forfeited		(51	)		93.42
Nonvested at March 31, 2021		47,709		$	81.58

6. OPERATING SEGMENT INFORMATION

Selected information by operating segment is presented in the table below. Additionally, the table reconciles segment totals to total earnings and total revenues.

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	For the Three Months
Revenues	Ended March 31,
(in thousands)	2021			2020
Casualty	$	148,770		$	143,420
Property		51,642			44,348
Surety		28,183			27,814
Net premiums earned	$	228,595		$	215,582
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
Total consolidated revenue	$	287,331		$	118,117
Net Earnings
(in thousands)	2021			2020
Casualty	$	24,867		$	(1,323	)
Property		(1,005	)		9,908
Surety		6,055			8,654
Net underwriting income	$	29,917		$	17,239
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
General corporate expense and interest on debt		(5,243	)		(3,652	)
Equity in earnings of unconsolidated investees		6,424			4,514
Earnings (loss) before income taxes	$	89,834		$	(79,364	)
Income tax expense (benefit)		16,822			(18,097	)
Net earnings (loss)	$	73,012		$	(61,267	)

The following table further summarizes revenues by major product type within each operating segment:

	For the Three Months
Net Premiums Earned	Ended March 31,
(in thousands)	2021		2020
Casualty
Commercial excess and personal umbrella	$	51,554	$	40,088
General liability		22,407		23,998
Professional services		21,728		20,695
Commercial transportation		16,830		21,185
Small commercial		15,722		15,633
Executive products		5,241		7,331
Other casualty		15,288		14,490
Total	$	148,770	$	143,420
Property
Marine	$	22,958	$	19,577
Commercial property		22,712		19,155
Specialty personal		5,034		5,000
Other property		938		616
Total	$	51,642	$	44,348
Surety
Commercial	$	11,013	$	10,938
Miscellaneous		10,635		10,516
Contract		6,535		6,360
Total	$	28,183	$	27,814
Grand Total	$	228,595	$	215,582

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7. LEASES

Right-of-use (ROU) assets are included in the other assets line item and lease liabilities are included in the other liabilities line item of the consolidated balance sheet. We determine if a contract contains a lease at inception and recognize operating lease ROU assets and operating lease liabilities based on the present value of the future minimum lease payments at the commencement date. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of future payments. Lease agreements may include options to extend or terminate. The options are exercised at our discretion and are included in operating lease liabilities if it is reasonably certain the option will be exercised. Lease agreements have lease and non-lease components, which are accounted for as a single lease component. Operating lease cost for future minimum lease payments is recognized on a straight-line basis over the lease term. Variable lease cost is expensed in the period in which the obligation is incurred. Sublease income is recognized on a straight-line basis over the sublease term.

The Company’s operating lease obligations are for branch office facilities. The components of lease expense and other lease information as of and during the three-month periods ended March 31, 2021 and 2020 are as follows:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Operating lease cost	$	1,351		$	1,406
Variable lease cost		384			355
Sublease income		(123	)		—
Total lease cost	$	1,612		$	1,761
Cash paid for amounts included in measurement of lease liabilities
Operating cash outflows from operating leases	$	1,488		$	1,486
ROU assets obtained in exchange for new operating lease liabilities	$	58		$	15
Reduction to ROU assets resulting from reduction to lease liabilities	$	59		$	—
Other non-cash reductions to ROU assets	$	—		$	1,192

(in thousands)	March 31, 2021			December 31, 2020
Operating lease ROU assets	$	14,952		$	16,200
Operating lease liabilities	$	17,676		$	19,072
Weighted-average remaining lease term - operating leases	3.68		years	3.87		years
Weighted-average discount rate - operating leases		2.33	%		2.32	%

Future minimum lease payments under non-cancellable leases as of March 31, 2021 were as follows:

(in thousands)	March 31, 2021
2021	$	4,466
2022		5,941
2023		4,424
2024		2,334
2025		802
2026		242
Thereafter		321
Total future minimum lease payments	$	18,530
Less imputed interest		(854	)
Total operating lease liability	$	17,676

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Forward looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 appear throughout this report. These statements relate to our current expectations, beliefs, intentions, goals or strategies regarding the future and are based on certain underlying assumptions by the Company. These forward looking statements generally include words such as “expect,” “predict,” “estimate,” “will,” “should,” “anticipate,” “believe” and similar expressions. Such assumptions are, in turn, based on information available and internal estimates and analyses of general economic conditions, competitive factors, conditions specific to the property and casualty insurance and reinsurance industries, claims development and the impact thereof on our loss reserves, the adequacy and financial security of our reinsurance programs, developments in the securities market and the impact on our investment portfolio, regulatory changes and conditions and other factors. These assumptions are subject to various risks, uncertainties and other factors, including, without limitation those set forth in “Item 1A. Risk Factors” within the Annual Report on Form 10-K for the year ended December 31, 2020 and Part II within this report. Actual results could differ materially from those expressed in, or implied by, these forward looking statements. We assume no obligation to update any such statements. You should review the various risks, uncertainties and other factors listed from time to time in our Securities and Exchange Commission filings.

OVERVIEW

RLI Corp. is a U.S.-based, specialty insurance company that underwrites select property and casualty insurance through major subsidiaries collectively known as RLI Insurance Group (Group). Our focus is on niche markets and developing unique products that are tailored to customers’ needs. We hire underwriters and claim examiners with deep expertise and provide exceptional customer service and support. We maintain a highly diverse product portfolio and underwrite for profit in all market conditions. In 2020, we achieved our 25th consecutive year of underwriting profitability. Over the 25-year period, we averaged an 88.3 combined ratio. This drives our ability to provide shareholder returns in three different ways: the underwriting income itself, net investment income from our investment portfolio and long-term appreciation in our equity portfolio.

We measure the results of our insurance operations by monitoring growth and profitability across three distinct business segments: casualty, property and surety. Growth is measured in terms of gross premiums written, and profitability is analyzed through combined ratios, which are further subdivided into their respective loss and expense components.

The property and casualty insurance business is cyclical and influenced by many factors, including price competition, economic conditions, natural or man-made disasters (for example, earthquakes, hurricanes, pandemics and terrorism), interest rates, state regulations, court decisions and changes in the law. One of the unique and challenging features of the property and casualty insurance business is that coverages must be priced before costs have fully developed, because premiums are charged before claims are incurred. This requires that liabilities be estimated and recorded in recognition of future loss and settlement obligations. Due to the inherent uncertainty in estimating these liabilities, there can be no assurance that actual liabilities will not be more or less than recorded amounts; if actual liabilities differ from recorded amounts, there will be an adverse or favorable effect on net earnings.

The casualty portion of our business consists largely of commercial excess, personal umbrella, general liability, transportation and executive products coverages, as well as package business and other specialty coverages, such as professional liability and workers’ compensation for office-based professionals. We also assume a limited amount of hard-to-place risks through a quota share reinsurance agreement. The casualty business is subject to the risk of estimating losses and related loss reserves because the ultimate settlement of a casualty claim may take several years to fully develop. The casualty segment is also subject to inflation risk and may be affected by evolving legislation and court decisions that define the extent of coverage and the amount of compensation due for injuries or losses.

Our property segment is comprised primarily of commercial fire, earthquake, difference in conditions and marine coverages. We also offer select personal lines policies, including homeowners’ coverages. Property insurance results are subject to the variability introduced by perils such as earthquakes, fires, hurricanes and other storms. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coast, as well as to homes we insure in Hawaii. We limit our net aggregate exposure to a catastrophic event by minimizing the total policy limits written in a particular region, purchasing reinsurance and maintaining policy terms and conditions throughout insurance cycles. We also use computer-assisted modeling techniques to provide estimates that help the Company carefully manage the concentration of risks exposed to catastrophic events.

The surety segment specializes in writing small to large-sized commercial and contract surety coverages, including payment and performance bonds. We also offer miscellaneous bonds including license and permit, notary and court bonds. Often, our surety coverages involve a statutory requirement for bonds. While these bonds typically maintain a relatively low

21

loss ratio, losses may fluctuate due to adverse economic conditions affecting the financial viability of our principals. The contract surety product guarantees the construction work of a commercial contractor for a specific project. Generally, losses occur due to the deterioration of a contractor’s financial condition. This line has historically produced marginally higher loss ratios than other surety lines during economic downturns.

The insurance marketplace is intensely competitive across all of our segments. However, we believe that our business model is built to create underwriting income by focusing on sound risk selection and discipline. Our primary focus will continue to be on underwriting profitability, with a secondary focus on premium growth where we believe underwriting profit exists, as opposed to general premium growth or market share measurements.

GAAP, non-GAAP and Performance Measures

Throughout this quarterly report, we include certain non-generally accepted accounting principles (non-GAAP) financial measures. Management believes that these non-GAAP measures further explain the Company’s results of operations and allow for a more complete understanding of the underlying trends in the Company’s business. These measures should not be viewed as a substitute for those determined in accordance with generally accepted accounting principles in the United States of America (GAAP). In addition, our definitions of these items may not be comparable to the definitions used by other companies.

The following is a list of non-GAAP measures found throughout this report with their definitions, relationships to GAAP measures and explanations of their importance to our operations.

Underwriting Income

Underwriting income or profit represents one measure of the pretax profitability of our insurance operations and is derived by subtracting losses and settlement expenses, policy acquisition costs and insurance operating expenses from net premiums earned, which are all GAAP financial measures. Each of these captions is presented in the statements of earnings but is not subtotaled. However, this information is available in total and by segment in note 6 to the unaudited condensed consolidated interim financial statements in this quarterly report on Form 10-Q, and in note 12 to the consolidated financial statements in our 2020 Annual Report on Form 10-K, regarding operating segment information. The nearest comparable GAAP measure is earnings before income taxes which, in addition to underwriting income, includes net investment income, net realized gains or losses, net unrealized gains or losses on equity securities, general corporate expenses, debt costs and our portion of earnings from unconsolidated investees. A reconciliation of net earnings to underwriting income follows:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Net earnings (loss)	$	73,012		$	(61,267	)
Income tax expense (benefit)		16,822			(18,097	)
Earnings (loss) before income taxes	$	89,834		$	(79,364	)
Equity in earnings of unconsolidated investees		(6,424	)		(4,514	)
General corporate expenses		3,342			1,755
Interest expense on debt		1,901			1,897
Net unrealized (gains) losses on equity securities		(28,162	)		130,395
Net realized gains		(14,150	)		(15,152	)
Net investment income		(16,424	)		(17,778	)
Net underwriting income	$	29,917		$	17,239

Combined Ratio

The combined ratio, which is derived from components of underwriting income, is a common industry performance measure of profitability for underwriting operations and is calculated in two components. First, the loss ratio is losses and settlement expenses divided by net premiums earned. The second component, the expense ratio, reflects the sum of policy acquisition costs and insurance operating expenses divided by net premiums earned. All items included in these components of the combined ratio are presented in our GAAP consolidated financial statements. The sum of the loss and expense ratios is the combined ratio. The difference between the combined ratio and 100 reflects the per-dollar rate of underwriting income or loss.

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Critical Accounting Policies

In preparing the unaudited condensed consolidated interim financial statements, we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses for the reporting period. Actual results could differ significantly from those estimates.

The most critical accounting policies involve significant estimates and include those used in determining the liability for unpaid losses and settlement expenses, investment valuation, recoverability of reinsurance balances, deferred policy acquisition costs and deferred taxes. For a detailed discussion of each of these policies, refer to our 2020 Annual Report on Form 10-K.

There have been no significant changes to critical accounting policies during the year.

IMPACT OF COVID-19

As an employee-owned company, the health and well-being of our customers, partners and associates is our highest priority. While a large percentage of our associates are still working from home, our processes and controls continue to operate effectively and we have been able to maintain the highest service and support levels possible for our customers.

It is difficult to predict how and to what extent COVID-19, and its effects on the economy, will impact our revenues in the coming quarters. To date, the product line that has experienced the greatest impact has been public transportation. Many of our passenger transportation customers have been unable to effectively operate under social-distancing protocols and stay-at-home orders. Transportation premium was down from pre-pandemic levels in the first quarter of 2021 and we expect transportation premium may be challenged until the use of public transportation increases, which may not be until after vaccines are more fully distributed or there is a significant reduction in cases. Additionally, slowdowns in the construction industry contributed to premium declines for our general liability, commercial umbrella and contract surety products. A number of our products support the construction industry, and revenues may continue to be impacted as long as this sector experiences disruption. However, our personal lines products, management liability products and property businesses have seen little to no impact on premium from the pandemic.

The loss exposure arising out of the spread of COVID-19 and resulting shutdown will take time to resolve. We do not offer event cancellation, travel, trade credit or pandemic-related coverages, which would be more directly impacted by the COVID-19 pandemic. The derivative implications that COVID-19 has on the economy may have negative implications on products that are correlated with the credit cycle, including, but not limited to, some of our executive products and surety offerings. Additionally, the professional services and executive product groups may be affected by claims made against companies who are reopening or returning to work.

Actuarial models base future emergence on historic experience, with adjustments for current trends, and the appropriateness of these assumptions involved greater uncertainty as of March 31, 2021. We expect there will be impacts to the timing of loss emergence and ultimate loss ratios for certain coverages. The industry is experiencing new issues, including the postponement of civil court cases, the extension of various statutes of limitations, changes in settlement trends and a significant reduction in economic activity and insured exposure in some classes. Our booked reserves include consideration of these factors, but the duration and degree to which these issues persist, along with potential legislative, regulatory or judicial actions, could result in loss reserve deficiencies and reduce earnings in future periods.

Investment yields decreased throughout 2020, which resulted in lower reinvestment rates and, in turn, lower investment income in the first quarter of 2021. Additionally, the fair value of the fixed income portfolio will decline as interest rates rise, as was observed with our $44.7 million of after-tax other comprehensive loss during the first quarter.

We produced solid operating results in the first quarter of 2021 and our financial position remains strong. We generated $60.3 million of net operating cash inflows and believe we have sufficient sources of liquidity to meet our anticipated needs over the next 12 to 24 months. Our revolving credit facility provides for a borrowing capacity of $60.0 million, which can be increased to $120.0 million under certain circumstances. Additionally, our membership in the Federal Home Loan Bank system provides a secured lending facility with an aggregate borrowing capacity of approximately $30.0 million.

Ultimately, the extent to which COVID-19 will impact our business will be influenced by how long it takes for the economy to recover. We continue to evaluate all aspects of our operations and are making necessary adjustments to manage our business. Our diversified portfolio of products and financial strength have allowed us to remain on solid footing. We believe we have a strong and sustainable underwriting approach that will allow us to weather the economic environment and uncertainty we are currently experiencing.

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RESULTS OF OPERATIONS

Three Months Ended March 31, 2021 Compared to Three Months Ended March 31, 2020

Consolidated revenue for the first three months of 2021 increased $169.2 million from the first quarter of 2020. Net premiums earned for the Group increased 6 percent, driven by growth from our property and casualty segments, while performance in the equity portfolio varied significantly between the periods. Positive market performance resulted in $28.2 million of unrealized gains in our equity portfolio in 2021, while overall market declines resulted in $130.4 million of unrealized losses on equity securities in the first quarter of 2020. Investment income was down 8 percent compared to the prior year, as reinvestment rates declined during 2020. Realized gains during the first three months of 2021 were comprised of $13.1 million of realized gains on equity securities from rebalancing our portfolio, $1.2 million of realized gains on the fixed income portfolio and $0.1 million of other realized losses. This compares to $15.2 million of realized gains on the equity portfolio, $2.3 million of realized gains on the fixed income portfolio and $2.3 million of other realized losses for the same period in 2020.

	For the Three Months
	Ended March 31,
Consolidated Revenues (in thousands)	2021		2020
Net premiums earned	$	228,595	$	215,582
Net investment income		16,424		17,778
Net realized gains		14,150		15,152
Net unrealized gains (losses) on equity securities		28,162		(130,395	)
Total consolidated revenue	$	287,331	$	118,117

Net earnings for the first three months of 2021 totaled $73.0 million, compared to $61.3 million of net loss for the same period in 2020. The increase in earnings for the first three months of 2021 was primarily attributed to $22.2 million of net after-tax unrealized gains on equity securities, compared to $103.0 million of after-tax unrealized losses in 2020. Underwriting results for 2021 were impacted by $16.0 million of pretax storm losses, compared to $0.5 million of pretax storm losses in the first quarter of 2020. Results for each period benefited from favorable development on prior years’ loss reserves, which provided additional pretax earnings of $37.1 million in the first three months of 2021, compared to $15.2 million in 2020. Pretax bonus and profit sharing-related expenses associated with the net impact of prior years’ reserve development and catastrophe losses totaled $3.1 million in 2021, compared to $2.2 million in 2020. These performance-related expenses affected policy acquisition, insurance operating and general corporate expenses. Bonus and profit-sharing amounts earned by executives, managers and associates are predominately influenced by corporate performance, including operating earnings, combined ratio and return on capital.

Underwriting income was $29.9 million on an 86.9 combined ratio for the three months of 2021, compared to $17.2 million on a 92.0 combined ratio in the same period of 2020. Both periods reflect favorable reserve development on prior accident years. The loss ratio decreased to 45.9 from 51.5, due to improvements in the current accident year loss ratio, a higher level of favorable development in 2021 and the $5.0 million of reserves added in 2020 related to COVID-19 investigative and claim defense costs. The Group’s expense ratio increased to 41.0 from 40.5, as 2021 experienced larger net earnings, which led to larger levels of bonus and profit-sharing expenses.

Our equity in earnings of unconsolidated investees primarily relate to our investments in Maui Jim, Inc. (Maui Jim), a manufacturer of high-quality sunglasses, and Prime Holdings Insurance Services, Inc. (Prime), a specialty insurance company. In the first quarter of 2021, $3.7 million of investee earnings were recorded for Maui Jim and $3.7 million of investee earnings were recorded for Prime. Comparatively, the first three months of 2020 reflected investee earnings of $2.6 million and $1.9 million from Maui Jim and Prime, respectively.

Comprehensive earnings totaled $28.3 million for the first three months of 2021, compared to $74.3 million of comprehensive loss for the first three months of 2020. Other comprehensive loss primarily included net after-tax unrealized losses from the fixed income portfolio. Other comprehensive loss of $44.7 million in the first quarter of 2021 was attributable to increased interest rates, which decreased the fair value of securities held in the fixed income portfolio. Comparatively, $13.0 million of other comprehensive loss was recognized in 2020 as widening credit spreads more than offset declines in interest rates.

Premiums

Gross premiums written for the Group increased $49.1 million for the first three months of 2021 when compared to the same period of 2020. Growth was achieved in all three segments, though the increase was driven by products in the casualty

24

and property segments. Net premiums earned increased $13.0 million, also driven by products in our property and casualty segments.

	Gross Premiums Written									Net Premiums Earned
	For the Three Months Ended March 31,									For the Three Months Ended March 31,
(in thousands)	2021		2020			% Change				2021		2020		% Change
Casualty
Commercial excess and personal umbrella	$	64,723	$	55,590			16		%	$	51,554	$	40,088		29		%
General liability		23,209		24,691			(6	)	%		22,407		23,998		(7	)	%
Professional services		22,407		21,498			4		%		21,728		20,695		5		%
Commercial transportation		16,438		(3,777	)	NM					16,830		21,185		(21	)	%
Small commercial		16,378		16,117			2		%		15,722		15,633		1		%
Executive products		22,770		20,947			9		%		5,241		7,331		(29	)	%
Other casualty		22,971		24,170			(5	)	%		15,288		14,490		6		%
Total	$	188,896	$	159,236			19		%	$	148,770	$	143,420		4		%
Property
Marine	$	26,853	$	21,111			27		%	$	22,958	$	19,577		17		%
Commercial property		40,136		29,779			35		%		22,712		19,155		19		%
Specialty personal		5,662		4,872			16		%		5,034		5,000		1		%
Other property		1,886		959			97		%		938		616		52		%
Total	$	74,537	$	56,721			31		%	$	51,642	$	44,348		16		%
Surety
Commercial	$	13,301	$	11,280			18		%	$	11,013	$	10,938		1		%
Miscellaneous		11,974		11,948			0		%		10,635		10,516		1		%
Contract		6,187		6,647			(7	)	%		6,535		6,360		3		%
Total	$	31,462	$	29,875			5		%	$	28,183	$	27,814		1		%
Grand Total	$	294,895	$	245,832			20		%	$	228,595	$	215,582		6		%

NM = Not Meaningful

Casualty

Gross premiums written for the casualty segment were up $29.7 million in the first three months of 2021. Gross premiums from commercial excess and personal umbrella increased $9.1 million, due to an expanded distribution base in personal umbrella and rate increases. Rate increases led to a 9 percent increase in premiums for our executive products group.

Commercial transportation has been significantly affected by the stay-at-home orders associated with COVID-19. In the first quarter of 2020, we reversed $23.0 million of gross premium written, which resulted in negative premium for the quarter. While still down from pre-pandemic levels, premium increased to $16.4 million in 2021. Additionally, general liability premiums declined as a result of increased competition, as well as decreases in construction related activity and use-based exposures.

Property

Gross premiums written for the property segment were up $17.8 million in the first three months of 2021. Our commercial property business was up $10.4 million, as rates on wind-prone and earthquake exposures continued to increase. Rate increases and market disruption, which created new business opportunities, led to $5.7 million of growth for our marine product. Other property premium increased as a result of property-exposed GBA business that continues to gain scale.

Surety

The surety segment recorded gross premiums written of $31.5 million for the first three months of 2021, an increase of $1.6 million from the same period last year. Commercial surety has benefited from growth within existing accounts and writing bonds with new customers, while the economic slowdown and increased competition continued to create headwinds for contract surety.

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Underwriting Income

	For the Three Months
	Ended March 31,
	2021			2020
Underwriting Income (Loss) (in thousands)
Casualty	$	24,867		$	(1,323	)
Property		(1,005	)		9,908
Surety		6,055			8,654
Total	$	29,917		$	17,239
Combined Ratio
Casualty		83.3		100.9
Property	101.9				77.7
Surety	78.5			68.9
Total	86.9				92.0

Casualty

The casualty segment recorded underwriting earnings of $24.9 million in the first three months of 2021, compared to $1.3 million of underwriting loss for the same period last year. Reserve releases reduced loss and settlement expenses for the casualty segment by $28.3 million, primarily on accident years 2018 through 2020. Favorable development was widespread with notable amounts from general liability, transportation, professional services, small commercial and personal umbrella. Offsetting the favorable development in 2021, winter storm losses on casualty-oriented package policies that include property coverage resulted in $1.1 million of losses. In comparison, $6.4 million of reserves were released in the first quarter of 2020. Transportation, small commercial and general liability drove the favorable development.

The combined ratio for the casualty segment was 83.3 in 2021, compared to 100.9 in 2020. The segment’s loss ratio was 47.2 in 2021, down from 65.7 in 2020 as a result of improvements in the current accident year loss ratio, the increased level of favorable development and the addition of $3.0 million of reserves in 2020 related to COVID-19 investigative and defense costs. The expense ratio for the casualty segment was 36.1, up from 35.2 for the same period last year.

Property

The property segment recorded underwriting loss of $1.0 million for the first three months of 2021, compared to $9.9 million of underwriting income for the same period last year. Underwriting results for 2021 included $6.1 million of favorable development on prior years’ loss and catastrophe reserves across most products and $14.9 million of winter storm losses. Comparatively, the 2020 underwriting results included $4.8 million of favorable development on prior years’ loss and catastrophe reserves, primarily from the marine business, $0.5 million of storm losses and the addition of $2.0 million of reserves related to COVID-19 investigative and defense costs.

Underwriting results for the first three months of 2021 translated into a combined ratio of 101.9, compared to 77.7 for the same period last year. The segment’s loss ratio was 61.3 in 2021, up from 36.0 in 2020 due to higher levels of storm losses. The segment’s expense ratio decreased to 40.6 in 2021 from 41.7 in the prior year, as increased levels of earned premium allowed the segment to better leverage expenses.

Surety

The surety segment recorded underwriting income of $6.1 million for the first three months of 2021, compared to $8.7 million for the same period last year. Both periods reflected positive current accident year underwriting performance and benefited from favorable development on prior years’ loss reserves. Results for 2021 included favorable development on prior accident years’ reserves, which decreased loss and settlement expenses for the segment by $2.8 million. Comparatively, 2020 results included favorable development on prior accident years’ loss reserves, which decreased the segment’s loss and settlement expenses by $4.0 million.

The combined ratio for the surety segment totaled 78.5 for the first three months of 2021, compared to 68.9 for the same period in 2020. The segment’s loss ratio was 10.7 in 2021, up from 2.8 in 2020 due to lower reserve releases and modestly higher current accident year losses. The expense ratio was 67.8, up from 66.1 in the prior year.

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Investment Income

Our investment portfolio generated net investment income of $16.4 million during the first three months of 2021, a decrease of 7.6 percent from that reported for the same period in 2020. The decrease in investment income was largely due to a decline in reinvestment rates during 2020.

Yields on our fixed income investments for the first three months of 2021 and 2020 were as follows:

	2021			2020
Pretax Yield
Taxable		2.87	%		3.27	%
Tax-Exempt		2.63	%		2.77	%
After-Tax Yield
Taxable		2.27	%		2.58	%
Tax-Exempt		2.49	%		2.62	%

The following table depicts the composition of our investment portfolio at March 31, 2021 as compared to December 31, 2020:

(in thousands)	March 31, 2021				December 31, 2020
Fixed income	$	2,175,869	75.6	%	$	2,196,626	77.4	%
Equity securities		555,209	19.3	%		524,006	18.5	%
Other invested assets		50,413	1.8	%		54,232	1.9	%
Cash		94,935	3.3	%		62,217	2.2	%
Total investments and cash	$	2,876,426	100.0	%	$	2,837,081	100.0	%

We believe our overall asset allocation best meets our strategy to preserve capital for policyholders, provide sufficient income to support insurance operations and effectively grow book value over a long-term investment horizon.

The fixed income portfolio decreased by $20.8 million in the first three months of 2021. The decrease was due to the increase in interest rates during the first quarter, decreasing the fair value of securities in the fixed income portfolio. Average fixed income duration was 4.8 years at March 31, 2021, reflecting our current liability structure and sound capital position. The equity portfolio increased by $31.2 million during the first three months of 2021, reflecting strong market returns.

Income Taxes

Our effective tax rate for the first three months of 2021 was 18.7 percent, compared to 22.8 percent for the same period in 2020. Effective rates are dependent upon components of pretax earnings or losses and the related tax effects. The effective rate was lower for the first three months of 2021 as tax-favored adjustments reduced income tax expense, while tax-favored adjustments increased the tax benefit recognized in the first quarter of 2020 as a result of pretax losses.

LIQUIDITY AND CAPITAL RESOURCES

We have three primary types of cash flows: (1) cash flows from operating activities, which consist mainly of cash generated by our underwriting operations and income earned on our investment portfolio, (2) cash flows from investing activities related to the purchase, sale and maturity of investments and (3) cash flows from financing activities that impact our capital structure, such as shareholder dividend payments and changes in debt and shares outstanding.

The following table summarizes cash flows provided by (used in) our activities for the three-month periods ended March 31, 2021 and 2020:

(in thousands)	2021			2020
Operating cash flows	$	60,287		$	(5,767	)
Investing cash flows		(16,544	)		10,048
Financing cash flows		(11,025	)		(7,783	)
Total	$	32,718		$	(3,502	)

Our largest source of cash is premiums received from customers and our largest cash outflow is claim payments on insured losses. Cash flows from operating activities can vary among periods due to the timing in which these payments are

27

made or received. Operating cash flows in the first three months of 2021 benefited from lower levels of loss and settlement expense payments and increase premium receipts relative to the first three months of 2020.

We have $149.5 million in debt outstanding. On October 2, 2013, we completed a public debt offering, issuing $150.0 million in senior notes maturing September 15, 2023 (a 10-year maturity), and paying interest semi-annually at the rate of 4.875 percent per annum. The notes were issued at a discount resulting in proceeds, net of discount and commission, of $148.6 million. The estimated fair value for the senior notes at March 31, 2021 was $164.4 million. The fair value of our debt is estimated based on the limited observable prices that reflect thinly traded securities.

As of March 31, 2021, we had cash and other investments maturing within one year of approximately $201.8 million and an additional $572.0 million maturing between one to five years. Whereas our strategy is to be fully invested at all times, short-term investments in excess of demand deposit balances are considered a component of investment activities, and thus are classified as investments in our consolidated balance sheets.

We also maintain a revolving line of credit with Bank of Montreal, Chicago Branch, which permits us to borrow up to an aggregate principal amount of $60.0 million. This facility was entered into during the first quarter of 2020 and replaced the previous $50.0 million facility with JP Morgan Chase Bank N.A., which was set to expire on May 24, 2020. Under certain conditions, the line may be increased up to an aggregate principal amount of $120.0 million. The facility has a three-year term that expires on March 27, 2023. As of and during the three-month period ended March 31, 2021, no amounts were outstanding on either facility.

Additionally, two of our insurance companies, RLI Insurance Company (RLI Ins.) and Mt. Hawley Insurance Company, are members of the Federal Home Loan Bank of Chicago (FHLBC). Membership in the Federal Home Loan Bank system provides both companies access to an additional source of liquidity via a secured lending facility. Our membership allows each insurance subsidiary to determine tenor and structure at the time of borrowing. As of and during the three-month period ended March 31, 2021, there were no outstanding borrowing amounts with the FHLBC.

We believe that cash generated by operations and investments will provide sufficient sources of liquidity to meet our anticipated needs over the next 12 to 24 months. In the event they are not sufficient, we believe cash available from financing activities and other sources will provide sufficient additional liquidity.

We maintain a diversified investment portfolio representing policyholder funds that have not yet been paid out as claims, as well as the capital we hold for our shareholders. Invested assets at March 31, 2021 have increased $39.3 million from December 31, 2020. As of March 31, 2021, our investment portfolio had the following asset allocation breakdown:

	Cost or		Fair		Unrealized		% of Total
(in thousands)	Amortized Cost		Value		Gain/(Loss)		Fair Value			Quality*
U.S. government	$	161,956	$	170,422	$	8,466		5.9	%	AAA
U.S. agency		28,883		31,666		2,783		1.1	%	AAA
Non-U.S. government & agency		8,296		8,555		259		0.3	%	BBB+
Agency MBS		358,224		369,212		10,988		12.8	%	AAA
ABS/CMBS/MBS**		215,177		218,232		3,055		7.6	%	AA+
Corporate		796,042		833,203		37,161		29.0	%	BBB+
Municipal		528,274		544,579		16,305		18.9	%	AA
Total fixed income	$	2,096,852	$	2,175,869	$	79,017		75.6	%	AA-
Equity		298,926		555,209		256,283		19.3	%
Other invested assets		48,451		50,413		1,962		1.8	%
Cash		94,935		94,935		—		3.3	%
Total portfolio	$	2,539,164	$	2,876,426	$	337,262		100.0	%

* Quality ratings provided by Moody’s, S&P and Fitch

** Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

28

Quality is an average of each bond’s credit rating, adjusted for its relative weighting in the portfolio. As of March 31, 2021, our fixed income portfolio had the following rating distribution:

AAA	40.7	%
AA	20.0	%
A	21.8	%
BBB	11.0	%
BB	3.4	%
B	2.8	%
CCC	0.2	%
NR	0.1	%
Total	100.0	%

As of March 31, 2021, the duration of the fixed income portfolio was 4.8 years. Our fixed income portfolio remained well diversified, with 1,435 individual issues.

Our investment portfolio has limited exposure to structured asset-backed securities. As of March 31, 2021, we had $137.8 million in ABS, which are pools of assets collateralized by cash flows from several types of loans, including home equity, credit cards, autos and structured bank loans in the form of collateralized loan obligations (CLOs).

As of March 31, 2021, we had $80.4 million in commercial mortgage-backed securities and $369.2 million in mortgage-backed securities backed by government sponsored enterprises (GSEs - Freddie Mac, Fannie Mae and Ginnie Mae). Excluding the GSE-backed MBS, our exposure to ABS and CMBS was 7.6 percent of our investment portfolio at quarter end.

We had $833.2 million in corporate fixed income securities as of March 31, 2021, which includes $107.5 million invested in a high-yield credit strategy. This high-yield portfolio consists of floating rate bank loans and bonds that are below investment grade in credit quality and offer incremental yield over our core fixed income portfolio.

The municipal portfolio includes approximately 59 percent tax-exempt securities and 41 percent taxable securities. Approximately 87 percent of our municipal bond portfolio maintains an ‘AA’ or better rating, while 99 percent of the municipal bond portfolio is rated ‘A’ or better.

The securities within the equity portfolio remain primarily invested in large-cap issues with a focus on dividend income and are a source of liquidity. In the equity portfolio, the strategy remains one of value investing, with security selection taking precedence over market timing.

As of March 31, 2021, our equity portfolio had a dividend yield of 2.0 percent, compared to 1.4 percent for the S&P 500 index. Because of the corporate dividend-received-deduction applicable to our dividend income, we pay an effective tax rate of 13.1 percent on dividends, compared to 21.0 percent on taxable interest and 5.3 percent on municipal bond interest income. The equity portfolio is managed in a diversified and granular manner, with 213 individual securities and three ETF positions. No single company exposure in the equity portfolio represents more than 1 percent of invested assets.

Other invested assets include investments in low income housing tax credit partnerships, membership in the FHLBC and investments in private funds. As of March 31, 2021, $10.2 million of investments were pledged as collateral with the FHLBC to ensure timely access to the secured lending facility that ownership of FHLBC stock provides. As of and during the three-month period ended March 31, 2021, there were no outstanding borrowings with the FHLBC.

Our investment portfolio does not have any exposure to derivatives.

Our capital structure is comprised of equity and debt outstanding. As of March 31, 2021, our capital structure consisted of $149.5 million in 10-year maturity senior notes maturing in 2023 (debt) and $1.2 billion of shareholders’ equity. Debt outstanding comprised 11.5 percent of total capital as of March 31, 2021. Interest and fees on debt obligations totaled $1.9 million during each of the first three months of 2021 and 2020. We have incurred interest expense on debt at an average annual interest rate of 4.91 percent for the three-month periods ended March 31, 2021 and 2020.

We paid a regular quarterly cash dividend of $0.24 per share on March 19, 2021, the same amount as the prior quarter. We have increased dividends in each of the last 45 years.

Our three insurance companies are subsidiaries of RLI Corp, with RLI Ins. as the first-level, or principal, insurance company. At the holding company (RLI Corp.) level, we rely largely on dividends from our insurance subsidiaries to meet our

29

obligations for paying principal and interest on outstanding debt, corporate expenses and dividends to RLI Corp. shareholders. As discussed further below, dividend payments to RLI Corp. from our principal insurance subsidiary are restricted by state insurance laws as to the amount that may be paid without prior approval of the insurance regulatory authorities of Illinois. As a result, we may not be able to receive dividends from such subsidiary at times and in amounts necessary to pay desired dividends to RLI Corp. shareholders. On a GAAP basis, as of March 31, 2021, our holding company had $1.2 billion in equity. This includes amounts related to the equity of our insurance subsidiaries, which is subject to regulatory restrictions under state insurance laws. The unrestricted portion of holding company net assets is comprised primarily of investments and cash, including $70.7 million in liquid assets, which exceeds our normal annual holding company expenditures. Unrestricted funds at the holding company are available to fund debt interest, general corporate obligations and dividend payments to our shareholders. If necessary, the holding company also has other potential sources of liquidity that could provide for additional funding to meet corporate obligations or pay shareholder dividends, which include a revolving line of credit, as well as access to capital markets.

Ordinary dividends, which may be paid by our principal insurance subsidiary without prior regulatory approval, are subject to certain limitations based upon statutory income, surplus and earned surplus. The maximum ordinary dividend distribution from our principal insurance subsidiary in a rolling 12-month period is limited by Illinois law to the greater of 10 percent of RLI Ins. policyholder surplus, as of December 31 of the preceding year, or the net income of RLI Ins. for the 12-month period ending December 31 of the preceding year. Ordinary dividends are further restricted by the requirement that they be paid from earned surplus. Any dividend distribution in excess of the ordinary dividend limits is deemed extraordinary and requires prior approval from the Illinois Department of Insurance (IDOI). In the first three months of 2021, RLI Ins. paid $25.0 million in ordinary dividends to RLI Corp. In 2020, our principal insurance subsidiary paid ordinary dividends totaling $110.0 million. As of March 31, 2021, $11.8 million of the net assets of our principal insurance subsidiary were not restricted and could be distributed to RLI Corp. as ordinary dividends without prior approval from the IDOI. Because the limitations are based upon a rolling 12-month period, the amount and impact of these restrictions vary over time. In addition to restrictions from our principal subsidiary’s insurance regulator, we also consider internal models and how capital adequacy is defined by our rating agencies in determining amounts available for distribution.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Market risk is the risk of economic losses due to adverse changes in the estimated fair value of a financial instrument as the result of changes in equity prices, interest rates, foreign currency exchange rates and commodity prices. Historically, our primary market risks have been equity price risk associated with investments in equity securities and interest rate risk associated with investments in fixed maturities. We have limited exposure to both foreign currency risk and commodity risk.

Credit risk is the potential loss resulting from adverse changes in an issuer’s ability to repay its debt obligations. We monitor our portfolio to ensure that credit risk does not exceed prudent levels. We have consistently invested in high credit quality, investment grade securities. Our fixed maturity portfolio has an average rating of AA-, with 83 percent rated A or better by at least two nationally recognized rating organizations.

On an overall basis, our exposure to market risk has not significantly changed from that reported in our 2020 Annual Report on Form 10-K. The COVID-19 pandemic does present new and emerging uncertainty to the financial markets. See further discussion in Item 2, Management’s Discussion and Analysis of Financial Condition and Results of Operations of this Quarterly Report on Form 10-Q.

Item 4. Controls and Procedures

We maintain a system of controls and procedures designed to provide reasonable assurance as to the reliability of the financial statements and other disclosures included in this report, as well as to safeguard assets from unauthorized use or disposition. An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures was performed, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, as of the end of the period covered by this report. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that these disclosure controls and procedures are effective, as of the end of the period covered by this report.

In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurances of achieving the desired control objective, and management necessarily is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. We believe that our disclosure controls and procedures provide such reasonable assurance.

No changes were made to our internal control over financial reporting during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings – There were no material changes to report.

Item 1A. Risk Factors – There were no material changes to report.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds -

Items 2(a) and (b) are not applicable.

In 2010, our Board of Directors implemented a $100 million share repurchase program. We did not repurchase any shares during 2021. We have $87.5 million of remaining capacity from the repurchase program. The repurchase program may be suspended or discontinued at any time without prior notice.

Item 3. Defaults Upon Senior Securities - Not Applicable.

Item 4. Mine Safety Disclosures - Not Applicable.

Item 5. Other Information - Not Applicable.

Item 6. Exhibits

Exhibit No.	Description of Document	Reference
31.1	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Attached as Exhibit 31.1.
31.2	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Attached as Exhibit 31.2.
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Attached as Exhibit 32.1.
32.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Attached as Exhibit 32.2.
101	iXBRL-Related Documents	Attached as Exhibit 101.
104	Cover Page Interactive Data File	Embedded in Inline XBRL and contained in Exhibit 101.

31

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	RLI Corp.
	/s/ Todd W. Bryant
	Todd W. Bryant
	Vice President, Chief Financial Officer
	(Principal Financial and Chief Accounting Officer)
Date: April 23, 2021

32

EX-31.1

Exhibit 31.1

CERTIFICATION

Chief Executive Officer Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Jonathan E. Michael, certify that:

I have reviewed this quarterly report on Form 10-Q of RLI Corp.;

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of  the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  April 23, 2021

/s/ Jonathan E. Michael

Jonathan E. Michael

Chairman & CEO

EX-31.2

Exhibit 31.2

CERTIFICATION

Chief Financial Officer Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Todd W. Bryant, certify that:

I have reviewed this quarterly report on Form 10-Q of RLI Corp.;

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of  the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  April 23, 2021

/s/ Todd W. Bryant

Todd W. Bryant

Vice President, Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of RLI Corp. (the “Company”) on Form 10-Q for the period ending March 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jonathan E. Michael, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Jonathan E. Michael

Jonathan E. Michael

Chairman & CEO

April 23, 2021

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of RLI Corp. (the “Company”) on Form 10-Q for the period ending March 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Todd W. Bryant, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Todd W. Bryant

Todd W. Bryant

Vice President, Chief Financial Officer

April 23, 2021

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 15, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2021
Entity File Number	001-09463
Entity Registrant Name	RLI Corp
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	37-0889946
Entity Address, Address Line One	9025 North Lindbergh Drive
Entity Address, City or Town	Peoria
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	61615
City Area Code	309
Local Phone Number	692-1000
Title of 12(b) Security	Common Stock $0.01 par value
Trading Symbol	RLI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		45,203,438
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000084246
Amendment Flag	false

XML

Condensed Consolidated Statements of Earnings and Comprehensive Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net premiums earned	$ 228,595	$ 215,582
Net investment income	16,424	17,778
Net realized gains	14,150	15,152
Net unrealized gains (losses) on equity securities	28,162	(130,395)
Consolidated revenue	287,331	118,117
Losses and settlement expenses	104,892	111,021
Policy acquisition costs	74,990	72,941
Insurance operating expenses	18,796	14,381
Interest expense on debt	1,901	1,897
General corporate expenses	3,342	1,755
Total expenses	203,921	201,995
Equity in earnings of unconsolidated investees	6,424	4,514
Earnings (loss) before income taxes	89,834	(79,364)
Income tax expense (benefit)	16,822	(18,097)
Net earnings (loss)	73,012	(61,267)
Other comprehensive earnings (loss), net of tax	(44,747)	(13,031)
Comprehensive earnings (loss)	$ 28,265	$ (74,298)
Basic net earnings (loss) per share	$ 1.62	$ (1.36)
Diluted net earnings (loss) per share	$ 1.60	$ (1.36)
Weighted average number of common shares outstanding:
Basic	45,178	44,920
Diluted	45,674	44,920

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Available-for-sale, at fair value (amortized cost of $2,096,852 and allowance for credit losses of $375 at 3/31/21) (amortized cost of $2,061,467 and allowance for credit losses of $397 at 12/31/20)	$ 2,175,869	$ 2,196,626
Equity securities, at fair value (cost - $298,926 at 3/31/21 and $293,190 at 12/31/20)	555,209	524,006
Other invested assets	50,413	54,232
Cash	94,935	62,217
Total investments and cash	2,876,426	2,837,081
Accrued investment income	16,109	16,126
Premiums and reinsurance balances receivable, net of allowances for uncollectible amounts of $18,172 at 3/31/21 and $17,658 at 12/31/20	149,736	174,628
Ceded unearned premium	111,071	113,488
Reinsurance balances recoverable on unpaid losses and settlement expenses, net of allowances for uncollectible amounts of $8,953 at 3/31/21 and $8,634 at 12/31/20	454,921	443,729
Deferred policy acquisition costs	92,595	88,425
Property and equipment, at cost, net of accumulated depreciation of $70,089 at 3/31/21 and $68,682 at 12/31/20	50,470	51,406
Investment in unconsolidated investees	134,314	128,382
Goodwill and intangibles	53,617	53,719
Other assets	33,181	31,501
TOTAL ASSETS	3,972,440	3,938,485
Liabilities
Unpaid losses and settlement expenses	1,795,275	1,750,049
Unearned premiums	590,364	586,386
Reinsurance balances payable	26,560	42,265
Funds held	85,572	81,747
Income taxes-deferred	74,624	80,235
Bonds payable, long-term debt	149,536	149,489
Accrued expenses	45,784	75,925
Other liabilities	49,939	36,411
TOTAL LIABILITIES	2,817,654	2,802,507
Shareholders’ Equity
Common stock ($0.01 par value) (Shares authorized - 200,000,000 at 3/31/21 and 12/31/20) (68,133,652 shares issued, 45,203,438 shares outstanding at 3/31/21) (68,072,794 shares issued, 45,142,580 shares outstanding at 12/31/20)	681	681
Paid-in capital	336,757	335,365
Accumulated other comprehensive earnings	63,967	108,714
Retained earnings	1,146,380	1,084,217
Deferred compensation	7,926	8,292
Less: Treasury shares, at cost (22,930,214 shares at 3/31/21 and 12/31/20)	(400,925)	(401,291)
TOTAL SHAREHOLDERS’ EQUITY	1,154,786	1,135,978
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 3,972,440	$ 3,938,485

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 2,096,852	$ 2,061,467
Available-for-sale, allowance for credit losses	375	397
Equity securities, cost	298,926	293,190
Premiums and reinsurance balances receivable, allowances for uncollectible amounts	18,172	17,658
Reinsurance balances recoverable on unpaid losses and settlement expenses, allowances for uncollectible amounts	8,953	8,634
Property and equipment, accumulated depreciation	$ 70,089	$ 68,682
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	68,133,652	68,072,794
Common stock, shares outstanding (in shares)	45,203,438	45,142,580
Treasury stock, shares (in shares)	22,930,214	22,930,214

XML

Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common stock	Paid-in Capital	Accumulated Other Comprehensive Earnings (Loss)	Accumulated Other Comprehensive Earnings (Loss) Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Deferred Compensation	Treasury Stock at Cost
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2019	$ 995,388	$ 1,095	$ 678	$ 321,190	$ 52,473	$ 22	$ 1,014,046	$ 1,073	$ 7,980	$ (400,979)
Shares, Outstanding, Beginning Balance at Dec. 31, 2019			44,869,015
Accounting Standards Update [Extensible List]	ASU 2016-13
Increase Decrease In Stockholders Equity Roll Forward
Net earnings (loss)	$ (61,267)						(61,267)
Other comprehensive earnings (loss), net of tax	(13,031)				(13,031)
Deferred compensation									(1,010)	1,010
Share-based compensation	3,863		$ 1	3,862
Share-based compensation (in shares)			53,641
Dividends and dividend equivalents	(10,343)						(10,343)
Stockholders' Equity Attributable to Parent, Ending Balance at Mar. 31, 2020	915,705		$ 679	325,052	39,464		943,509		6,970	(399,969)
Shares, Outstanding, Ending Balance at Mar. 31, 2020			44,922,656
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2020	1,135,978		$ 681	335,365	108,714		1,084,217		8,292	(401,291)
Shares, Outstanding, Beginning Balance at Dec. 31, 2020			45,142,580
Increase Decrease In Stockholders Equity Roll Forward
Net earnings (loss)	73,012						73,012
Other comprehensive earnings (loss), net of tax	(44,747)				(44,747)
Deferred compensation									(366)	366
Share-based compensation	1,392			1,392
Share-based compensation (in shares)			60,858
Dividends and dividend equivalents	(10,849)						(10,849)
Stockholders' Equity Attributable to Parent, Ending Balance at Mar. 31, 2021	$ 1,154,786		$ 681	$ 336,757	$ 63,967		$ 1,146,380		$ 7,926	$ (400,925)
Shares, Outstanding, Ending Balance at Mar. 31, 2021			45,203,438

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Condensed Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Cash dividends paid per common share	$ 0.24	$ 0.23

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Cash Flows [Abstract]
Net cash provided by (used in) operating activities	$ 60,287	$ (5,767)
Purchase of:
Fixed income securities, available-for-sale	(145,121)	(69,233)
Equity securities	(31,957)	(31,811)
Property and equipment	(887)	(1,910)
Other	(4,323)	(2,611)
Proceeds from sale of:
Fixed income securities, available-for-sale	21,300	20,414
Equity securities	47,638	38,042
Other	521	2,267
Proceeds from call or maturity of:
Fixed income securities, available-for-sale	96,285	54,890
Net cash provided by (used in) investing activities	(16,544)	10,048
Cash Flows from Financing Activities
Cash dividends paid	(10,838)	(10,332)
Proceeds from (payments related to) stock option exercises	(187)	2,549
Net cash used in financing activities	(11,025)	(7,783)
Net increase (decrease) in cash	32,718	(3,502)
Cash at the beginning of the period	62,217	46,203
Cash at the end of the period	$ 94,935	$ 42,701

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

A. BASIS OF PRESENTATION

The unaudited condensed consolidated interim financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial reporting and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all the disclosures required by GAAP for complete financial statements. As such, these unaudited condensed consolidated interim financial statements should be read in conjunction with our 2020 Annual Report on Form 10-K. Management believes that the disclosures are adequate to make the information presented not misleading, and all normal and recurring adjustments necessary to present fairly the financial position at March 31, 2021 and the results of operations of RLI Corp. (the Company) and subsidiaries for all periods presented have been made. The results of operations for any interim period are not necessarily indicative of the operating results for a full year. Certain reclassifications were made to 2020 to conform to the classifications used in the current year.

The preparation of the unaudited condensed consolidated interim financial statements requires management to make estimates and assumptions relating to the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated interim financial statements and the reported amounts of revenue and expenses during the period. These estimates are inherently subject to change and actual results could differ significantly from these estimates.

B. ADOPTED ACCOUNTING STANDARDS

No new accounting standards applicable in 2021 impact our financial statements.

C. PROSPECTIVE ACCOUNTING STANDARDS

There are no prospective accounting standards which would have a material impact on our financial statements as of March 31, 2021.

D. REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on unpaid losses and settlement expenses are reported separately as an asset, rather than being netted with the related liability, since reinsurance does not relieve the Company of our liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. We continually monitor the financial condition of our reinsurers and actively follow up on any past due or disputed amounts. As part of our monitoring efforts, we review their annual financial statements and Securities and Exchange Commission (SEC) filings for those reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the AM Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including a segment-based analysis using the average default rating percentage by S&P rating, which assists the Company in assessing the sufficiency of the existing allowance. Additionally, we perform an in-depth reinsurer financial condition analysis prior to the renewal of our reinsurance placements.

Our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover. Once regulatory action (such as receivership, finding of insolvency, order of conservation or order of liquidation) is taken against a reinsurer, all paid and unpaid balances recoverable for the reinsurer are specifically identified and expensed into our allowance for estimated unrecoverable amounts from reinsurers. We then re-evaluate the remaining allowance and determine whether the balance is sufficient as detailed above and if needed, an additional allowance is recognized and income charged.

The allowances for uncollectible amounts on paid and unpaid reinsurance recoverables were $15.9 million and $9.0 million, respectively, at March 31, 2021. At December 31, 2020, the amounts were $15.9 million and $8.6 million, respectively. Changes in the allowances were due to changes in the amount of reinsurance balances outstanding, the composition of reinsurers from whom the balances were recoverable and their associated S&P default ratings. No write-offs were applied to the allowances in the first three months of 2021 and less than $0.1 million was recovered. We have no receivables with a due date that extends beyond one year that are not included in our allowance for uncollectible amounts.

E. INTANGIBLE ASSETS

The composition of goodwill and intangible assets at March 31, 2021 and December 31, 2020 is detailed in the following table:

	March 31,		December 31,
(in thousands)	2021		2020
Goodwill
Surety	$	40,816	$	40,816
Casualty		5,246		5,246
Total goodwill	$	46,062	$	46,062
Intangibles
Indefinite-lived intangibles - state insurance licenses		7,500		7,500
Definite-lived intangibles, net of accumulated amortization of $3,980 at 3/31/21 and $3,878 at 12/31/20		55		157
Total intangibles	$	7,555	$	7,657
Total goodwill and intangibles	$	53,617	$	53,719

All definite-lived intangible assets are amortized based on their estimated useful lives. Amortization of intangible assets was $0.1 million for the first quarter of 2021 and 2020.

Annual impairment assessments were performed on our goodwill and state insurance license indefinite-lived intangible asset during 2020. Based upon these reviews, none of the assets were impaired. In addition, there were no triggering events as of March 31, 2021 that would suggest an updated impairment test would be needed for our goodwill and intangible assets.

F. EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items. The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the unaudited condensed consolidated interim financial statements:

	For the Three Months						For the Three Months
	Ended March 31, 2021						Ended March 31, 2020
	Income		Shares		Per Share		Income			Shares		Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)		Amount		(Numerator)			(Denominator)		Amount
Basic EPS
Earnings (loss) available to common shareholders	$	73,012		45,178	$	1.62	$	(61,267	)		44,920	$	(1.36	)
Effect of Dilutive Securities
Stock options and restricted stock units		—		496				—			—
Diluted EPS
Earnings (loss) available to common shareholders	$	73,012		45,674	$	1.60	$	(61,267	)		44,920	$	(1.36	)
Anti-dilutive options excluded from diluted EPS				—							94

G. COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent. Other comprehensive earnings (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax benefit of $11.9 million and $3.5 million for the first quarter of 2021 and 2020, respectively.

Unrealized losses, net of tax, recognized in other comprehensive earnings (loss) were $44.7 million for the first three months of 2021, compared to $13.0 million during the same period last year. The unrealized losses were attributable to increased interest rates in both periods, which decreased the fair value of securities held in the fixed income portfolio.

The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the unaudited condensed consolidated interim financial statements:

(in thousands)	For the Three Months
	Ended March 31,
Unrealized Gains/Losses on Available-for-Sale Securities	2021			2020
Beginning balance	$	108,714		$	52,473
Cumulative-effect adjustment of ASU 2016-13		—			22
Adjusted beginning balance	$	108,714		$	52,495
Other comprehensive loss before reclassifications		(43,795	)		(11,880	)
Amounts reclassified from accumulated other comprehensive earnings		(952	)		(1,151	)
Net current-period other comprehensive loss	$	(44,747	)	$	(13,031	)
Ending balance	$	63,967		$	39,464
Balance of securities for which an allowance for credit losses has been recognized in net earnings	$	463		$	5,727

Credit losses on or the sale of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table:

	Amount Reclassified from Accumulated Other
(in thousands)	Comprehensive Earnings
	For the Three Months
Component of Accumulated	Ended March 31,						Affected line item in the
Other Comprehensive Earnings	2021			2020			Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	1,183		$	2,306		Net realized gains
		22			(849	)	Credit losses presented within net realized gains
	$	1,205		$	1,457		Earnings (loss) before income taxes
		(253	)		(306	)	Income tax benefit (expense)
	$	952		$	1,151		Net earnings (loss)

H. FAIR VALUE MEASUREMENTS

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. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All corporate, agency, government and municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Commercial Mortgage-backed Securities (CMBS) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate MBS and CMBS volatility, an option adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMBS and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMBS and ABS are deemed Level 2.

Regulation D Private Placement Securities: All Regulation D privately-placed bonds are classified as corporate securities and deemed Level 3. The pricing vendor evaluation methodology for these securities includes a combination of observable and unobservable inputs. Observable inputs include public corporate spread matrices classified by sector, rating and average life, as well as investment and non-investment grade matrices created from fixed income indices. Unobservable inputs include a liquidity spread premium calculated based on public corporate spread and private corporate spread matrices. The quantitative detail of the liquidity spread premium is neither provided nor reasonably available to the Company. An increase to the credit spread assumptions would result in a lower fair value.

For all of our fixed income securities classified as Level 2, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. If discrepancies are found in our comparisons, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 fixed income securities provided by our pricing services are reasonable.

Common Stock: As of March 31, 2021, nearly all of our common stock holdings were traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity securities not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy.

I. RISKS AND UNCERTAINTIES

Certain risks and uncertainties are inherent to our day-to-day operations. Adverse changes in the economy could lower demand for our insurance products or negatively impact our investment results, both of which could have an adverse effect on the revenue and profitability of our operations. The COVID-19 pandemic may continue to result in significant disruptions in economic activity and financial markets. The cumulative effects of any public health outbreak could reduce demand for our insurance policies, result in increased level of losses, settlement expenses or other operating costs, reduce the market value of invested assets held by the Company or negatively impact the fair value of our goodwill.

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Investments

3 Months Ended

Mar. 31, 2021

Investments Debt And Equity Securities [Abstract]

Investments

2. INVESTMENTS

Our investments are primarily composed of fixed income debt securities and common stock equity securities. We carry our equity securities at fair value and categorize all of our debt securities as available-for-sale, which are carried at fair value.

Realized gains and losses on disposition of investments are based on specific identification of the investments sold on the settlement date. The following is a summary of the disposition of fixed income and equity securities for the three-month periods ended March 31, 2021 and 2020:

Sales	Proceeds		Gross Realized					Net Realized
(in thousands)	From Sales		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	21,273	$	1,003	$	(27	)	$	976
Equities		47,638		14,233		(1,150	)		13,083
2020
Available-for-sale	$	19,858	$	2,270	$	(102	)	$	2,168
Equities		38,042		17,792		(2,633	)		15,159

Calls/Maturities			Gross Realized					Net Realized
(in thousands)	Proceeds		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	96,285	$	255	$	(48	)	$	207
2020
Available-for-sale	$	54,890	$	145	$	(7	)	$	138

FAIR VALUE MEASUREMENTS

Assets measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 are summarized below:

	As of March 31, 2021
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	170,422	$	—	$	170,422
U.S. agency			—		31,666		—		31,666
Non-U.S. government & agency			—		8,555		—		8,555
Agency MBS			—		369,212		—		369,212
ABS/CMBS/MBS*			—		218,232		—		218,232
Corporate			—		810,751		22,452		833,203
Municipal			—		544,579		—		544,579
Total fixed income securities - available-for-sale		$	—	$	2,153,417	$	22,452	$	2,175,869
Equity securities			555,105		104		—		555,209
Other invested assets			—		—		—		—
Total		$	555,105	$	2,153,521	$	22,452	$	2,731,078

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

	As of December 31, 2020
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	183,357	$	—	$	183,357
U.S. agency			—		32,872		—		32,872
Non-U.S. government & agency			—		10,965		—		10,965
Agency MBS			—		402,071		—		402,071
ABS/CMBS/MBS*			—		218,373		—		218,373
Corporate			—		798,794		17,798		816,592
Municipal			—		532,396		—		532,396
Total fixed income securities - available-for-sale		$	—	$	2,178,828	$	17,798	$	2,196,626
Equity securities			523,923		83		—		524,006
Other invested assets			6,068		—		—		6,068
Total		$	529,991	$	2,178,911	$	17,798	$	2,726,700

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

The following table summarizes changes in the balance of Regulation D private placement fixed income securities whose fair value was measured using significant unobservable inputs (Level 3).

(in thousands)	Level 3 Securities
Balance as of January 1, 2021	$	17,798
Net realized and unrealized gains (losses)
Included in net earnings as a part of:
Net investment income		(13	)
Net realized gains		(192	)
Included in other comprehensive earnings (loss)		(606	)
Total net realized and unrealized gains (losses)	$	(811	)
Purchases		5,465
Balance as of March 31, 2021	$	22,452
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in net realized gains	$	(192	)
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in other comprehensive earnings	$	(606	)

The amortized cost and fair value of available-for-sale fixed income securities by contractual maturity as of March 31, 2021 were as follows:

	March 31, 2021
(in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	105,159	$	106,340
Due after one year through five years		512,686		539,027
Due after five years through 10 years		522,850		552,085
Due after 10 years		382,756		390,973
ABS/CMBS/MBS*		573,401		587,444
Total available-for-sale	$	2,096,852	$	2,175,869

* Asset-backed, commercial mortgage-backed and mortgage-backed securities

The amortized cost and fair value of available-for-sale securities at March 31, 2021 and December 31, 2020 are presented in the tables below. Amortized cost does not include the $14.9 million of accrued interest receivable as of March 31, 2021 and December 31, 2020.

	March 31, 2021
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	161,956	$	—		$	9,539	$	(1,073	)	$	170,422
U.S. agency		28,883		—			2,783		—			31,666
Non-U.S. government & agency		8,296		—			407		(148	)		8,555
Agency MBS		358,224		—			14,007		(3,019	)		369,212
ABS/CMBS/MBS*		215,177		—			3,713		(658	)		218,232
Corporate		796,042		(375	)		42,200		(4,664	)		833,203
Municipal		528,274		—			21,781		(5,476	)		544,579
Total Fixed Income	$	2,096,852	$	(375	)	$	94,430	$	(15,038	)	$	2,175,869

	December 31, 2020
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	170,110	$	—		$	13,504	$	(257	)	$	183,357
U.S. agency		28,902		—			3,970		—			32,872
Non-U.S. government & agency		10,298		—			667		—			10,965
Agency MBS		384,015		—			18,789		(733	)		402,071
ABS/CMBS/MBS*		213,223		(17	)		5,580		(413	)		218,373
Corporate		753,404		(380	)		64,501		(933	)		816,592
Municipal		501,515		—			31,099		(218	)		532,396
Total Fixed Income	$	2,061,467	$	(397	)	$	138,110	$	(2,554	)	$	2,196,626

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

Allowance for Credit Losses and Unrealized Losses on Fixed Income Securities

We adopted ASU 2016-13, Financial Instruments – Credit Losses, on January 1, 2020, which required the recognition of a reversable allowance for credit losses on available-for-sale fixed income securities. Available-for-sale securities in the fixed income portfolio are subjected to several criteria to determine if those securities should be included in the allowance for expected credit loss evaluation, including:

• Changes in technology that may impair the earnings potential of the investment,

• The discontinuance of a segment of business that may affect future earnings potential,

• Reduction of or non-payment of interest and/or principal,

• Specific concerns related to the issuer’s industry or geographic area of operation,

• Significant or recurring operating losses, poor cash flows and/or deteriorating liquidity ratios and

• Downgrades in credit quality by a major rating agency.

If changes in interest rates and credit spreads do not reasonably explain the unrealized loss for an available-for-sale security or if any of the criteria above indicate a potential credit loss, the security is subjected to a discounted cash flow analysis. Inputs into the discounted cash flow analysis include prepayment assumptions for structured securities, default rates and recoverability rates based on credit rating. The allowance for any security is limited to the amount that the securities fair value is below amortized cost. As of March 31, 2021, the discounted cash flow analysis resulted in an allowance for credit losses on 16 securities. The following table presents changes in the allowance for expected credit losses on available-for-sale securities:

	Three Months Ended March 31,
(in thousands)	2021			2020
Beginning balance	$	397		$	—
Adoption impact of ASU 2016-13		-			28
Increase to allowance from securities for which credit losses were not previously recorded		-			624
Net increase (decrease) from securities that had an allowance at the beginning of the period		(22	)		226
Balance as of March 31,	$	375		$	878

As of March 31, 2021, in addition to the securities included in the allowance for credit losses, the fixed income portfolio contained 320 securities with an unrealized loss position for which an allowance for credit losses had not been recorded. The $15.0 million in associated unrealized losses represents 0.7 percent of the fixed income portfolio’s cost basis and 0.5 percent of total invested assets. Isolated to these securities, unrealized losses increased through the first three months of 2021, as interest rates increased during the period. Of the total 320 securities, 32 have been in an unrealized loss position for 12 consecutive months or longer. The following table illustrates the total value of fixed income securities that were in an unrealized loss position as of March 31, 2021 and December 31, 2020 after factoring in the allowance for credit losses. All fixed income securities continue to pay the expected coupon payments and we believe we will recover the amortized cost basis of available-for-sale securities that remain in an unrealized loss position.

	March 31, 2021									December 31, 2020
(in thousands)	< 12 Mos.			12 Mos. & Greater			Total			< 12 Mos.			12 Mos. & Greater			Total
U.S. government
Fair value	$	4,864		$	—		$	4,864		$	5,680		$	—		$	5,680
Amortized cost		5,937			—			5,937			5,937			—			5,937
Unrealized loss	$	(1,073	)	$	—		$	(1,073	)	$	(257	)	$	—		$	(257	)
Non-U.S. government
Fair value	$	2,852		$	—		$	2,852		$	—		$	—		$	—
Amortized cost		3,000			—			3,000			—			—			—
Unrealized Loss	$	(148	)	$	—		$	(148	)	$	—		$	—		$	—
Agency MBS
Fair value	$	92,446		$	—		$	92,446		$	43,999		$	—		$	43,999
Amortized cost		95,465			—			95,465			44,732			—			44,732
Unrealized loss	$	(3,019	)	$	—		$	(3,019	)	$	(733	)	$	—		$	(733	)
ABS/CMBS/MBS*
Fair value	$	55,703		$	7,235		$	62,938		$	32,771		$	16,161		$	48,932
Amortized cost		56,341			7,255			63,596			33,094			16,251			49,345
Unrealized loss	$	(638	)	$	(20	)	$	(658	)	$	(323	)	$	(90	)	$	(413	)
Corporate
Fair value	$	165,717		$	14,193		$	179,910		$	52,655		$	6,235		$	58,890
Amortized cost		170,204			14,370			184,574			53,440			6,383			59,823
Unrealized loss	$	(4,487	)	$	(177	)	$	(4,664	)	$	(785	)	$	(148	)	$	(933	)
Municipal
Fair value	$	115,596		$	—		$	115,596		$	25,676		$	—		$	25,676
Amortized cost		121,072			—			121,072			25,894			—			25,894
Unrealized loss	$	(5,476	)	$	—		$	(5,476	)	$	(218	)	$	—		$	(218	)
Total fixed income
Fair value	$	437,178		$	21,428		$	458,606		$	160,781		$	22,396		$	183,177
Amortized cost		452,019			21,625			473,644			163,097			22,634			185,731
Unrealized loss	$	(14,841	)	$	(197	)	$	(15,038	)	$	(2,316	)	$	(238	)	$	(2,554	)

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

The following table shows the composition of the fixed income securities in unrealized loss positions, after factoring in the allowance for credit losses, at March 31, 2021 by the National Association of Insurance Commissioners (NAIC) rating and the generally equivalent Standard & Poor’s (S&P) and Moody’s ratings. The vast majority of the securities are rated by S&P and/or Moody’s.

	Equivalent	Equivalent	(dollars in thousands)
NAIC	S&P	Moody’s	Amortized				Unrealized			Percent
Rating	Rating	Rating	Cost		Fair Value		Loss			to Total
1	AAA/AA/A	Aaa/Aa/A	$	365,229	$	352,591	$	(12,638	)		84.1	%
2	BBB	Baa		55,575		54,161		(1,414	)		9.4	%
3	BB	Ba		23,838		23,455		(383	)		2.5	%
4	B	B		26,201		25,616		(585	)		3.9	%
5	CCC	Caa		2,801		2,783		(18	)		0.1	%
6	CC or lower	Ca or lower		-		-		-			0.0	%
		Total	$	473,644	$	458,606	$	(15,038	)		100.0	%

Unrealized Gains and Losses on Equity Securities

Unrealized gains recognized on equity securities still held as of March 31, 2021 were $41.2 million during the first quarter. Comparatively, unrealized losses recognized on equity securities still held as of March 31, 2020 were $115.2 million during the first quarter.

Other Invested Assets

We had $50.4 million of other invested assets at March 31, 2021, compared to $54.2 million at December 31, 2020. Other invested assets include investments in low income housing tax credit partnerships (LIHTC), membership in the Federal Home Loan Bank of Chicago (FHLBC), and investments in private funds. Our LIHTC investments are carried at amortized cost and our investment in FHLBC stock is carried at cost. Due to the nature of the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

Our LIHTC interests had a balance of $19.4 million at March 31, 2021, compared to $20.3 million at December 31, 2020 and recognized a total tax benefit of $0.9 million during the first quarters of 2021 and 2020. Our unfunded commitment for our LIHTC investments totaled $2.7 million at March 31, 2021 and will be paid out in installments through 2035.

As of March 31, 2021, $10.2 million of investments were pledged as collateral with the FHLBC to ensure timely access to the secured lending facility that ownership of FHLBC stock provides. As of and during the three-month period ended March 31, 2021, there were no outstanding borrowings with the FHLBC.

Our investments in private funds totaled $27.8 million at March 31, 2021, compared to $32.1 million at December 31, 2020, and we had $6.5 million of associated unfunded commitments at March 31, 2021. Our interest in private funds is generally restricted from being transferred or otherwise redeemed without prior consent by the respective entities and the timed dissolution of the partnerships would trigger redemption. At December 31, 2020, we had a publicly traded common stock with short-term restrictions that limited our ability to sell the security without prior approval. During the first quarter of 2021, our investment in this security became unrestricted and the investment was included in our equity portfolio as of March 31, 2021.

Cash

Cash consists of uninvested balances in bank accounts. We had a cash balance of $94.9 million at March 31, 2021, compared to $62.2 million at December 31, 2020.

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Historical Loss And LAE Development

3 Months Ended

Mar. 31, 2021

Historical Loss And L A E Development Disclosure [Abstract]

Historical Loss And LAE Development

3. HISTORICAL LOSS AND LAE DEVELOPMENT

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the first three months of 2021 and 2020:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Unpaid losses and LAE at beginning of year
Gross	$	1,750,049		$	1,574,352
Ceded		(443,729	)		(384,517	)
Net	$	1,306,320		$	1,189,835
Adoption impact of ASU 2016-13 on reinsurance balances recoverable	$	—		$	(1,345	)
Increase (decrease) in incurred losses and LAE
Current accident year	$	142,013		$	126,194
Prior accident years		(37,121	)		(15,173	)
Total incurred	$	104,892		$	111,021
Loss and LAE payments for claims incurred
Current accident year	$	(5,962	)	$	(9,295	)
Prior accident years		(64,896	)		(81,897	)
Total paid	$	(70,858	)	$	(91,192	)
Net unpaid losses and LAE at March 31	$	1,340,354		$	1,208,319
Unpaid losses and LAE at March 31
Gross	$	1,795,275		$	1,574,760
Ceded		(454,921	)		(366,441	)
Net	$	1,340,354		$	1,208,319

We adopted ASU 2016-13, Financial Instruments – Credit Losses, on January 1, 2020, which required financial assets, including reinsurance balances recoverable, to be presented at the net amount expected to be collected. We previously maintained an allowance for uncollectible reinsurance balances prior to the adoption of this update. However, in order to comply with the updated requirements, we released $1.3 million of the allowance on uncollectible reinsurance balances upon adoption. The implementation guidance required the cumulative-effect adjustment be made to the beginning balance of retained earnings, rather than through net earnings like historical changes have and ongoing modifications will continue to be recorded.

For the first three months of 2021, incurred losses and LAE included $37.1 million of favorable development on prior years’ loss reserves. General liability, transportation, small commercial, professional services, personal umbrella and surety were drivers of the favorable development. No products experienced significant adverse development.

For the first three months of 2020, incurred losses and LAE included $15.2 million of favorable development on prior years’ loss reserves. The majority of products experienced modest amounts of favorable development on prior accident years, with notable contributions from transportation, marine, small commercial and surety. No products experienced significant adverse development.

Actuarial models base future emergence on historic experience, with adjustments for current trends, and the appropriateness of these assumptions involved more uncertainty as of March 31, 2021. We expect there will be impacts to the timing of loss emergence and ultimate loss ratios for certain coverages we underwrite as a result of the spread of COVID-19 and the related economic shutdown. The industry is experiencing new issues, including the postponement of civil court cases, the extension of various statutes of limitations, changes in settlement trends and a significant reduction in economic activity and insured exposure in some classes. Our recorded reserves include consideration of these factors, but the duration and degree to which these issues persist, along with potential legislative, regulatory or judicial actions, could result in loss reserve deficiencies and reduce earnings in future periods.

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Income Taxes

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Income Taxes

4. INCOME TAXES

Our effective tax rate for the three months ended March 31, 2021 was 18.7 percent, compared to 22.8 percent for the same period in 2020. Effective rates are dependent upon components of pretax earnings and the related tax effects. The effective rate was lower for the first three months of 2021 as tax-favored adjustments reduced income tax expense, while tax-favored adjustments increased the tax benefit recognized in the first quarter of 2020 as a result of pretax losses.

Income tax expense attributable to income from operations for the three-month periods ended March 31, 2021 and 2020 differed from the amounts computed by applying the U.S. federal tax rate of 21 percent to pretax income by the items detailed in the below table. In interim periods, income taxes are adjusted to reflect the effective tax rate we anticipate for the year, with adjustments flowing through the other items, net line.

	For the Three Months Ended March 31,
	2021							2020
(in thousands)	Amount			%				Amount			%
Provision for income taxes at the statutory rate of 21%	$	18,865			21.0		%	$	(16,666	)		21.0		%
Increase (reduction) in taxes resulting from:
Excess tax benefit on share-based compensation		(1,924	)		(2.1	)	%		(1,029	)		1.3		%
Tax exempt interest income		(319	)		(0.4	)	%		(313	)		0.4		%
Dividends received deduction		(236	)		(0.3	)	%		(271	)		0.3		%
Investment tax credit		(801	)		(0.9	)	%		(1,321	)		1.7		%
ESOP dividends paid deduction		(130	)		(0.1	)	%		(132	)		0.2		%
Nondeductible expenses		411			0.5		%		203			(0.3	)	%
Other items, net		956			1.0		%		1,432			(1.8	)	%
Total tax expense (benefit)	$	16,822			18.7		%	$	(18,097	)		22.8		%

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Stock Based Compensation

3 Months Ended

Mar. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Based Compensation

5. STOCK BASED COMPENSATION

Our RLI Corp. Long-Term Incentive Plan (2010 LTIP) was in place from 2010 to 2015. The 2010 LTIP provided for equity-based compensation, including stock options, up to a maximum of 4,000,000 shares of common stock (subject to adjustment for changes in our capitalization and other events). Between 2010 and 2015, we granted 2,878,000 stock options under the 2010 LTIP. The 2010 LTIP was replaced in 2015.

In 2015, our shareholders approved the 2015 RLI Corp. Long-Term Incentive Plan (2015 LTIP), which provides for equity-based compensation and replaced the 2010 LTIP. In conjunction with the adoption of the 2015 LTIP, effective May 7, 2015, options were no longer granted under the 2010 LTIP. Awards under the 2015 LTIP may be in the form of restricted stock, restricted stock units, stock options (non-qualified only), stock appreciation rights, performance units as well as other stock-based awards. Eligibility under the 2015 LTIP is limited to employees and directors of the Company or any affiliate. The granting of awards under the 2015 LTIP is solely at the discretion of the board of directors. The maximum number of shares of common stock available for distribution under the 2015 LTIP is 4,000,000 shares (subject to adjustment for changes in our capitalization and other events). Since the plan’s approval in 2015, we have granted 2,667,865 awards under the 2015 LTIP, including 44,496 thus far in 2021.

Compensation expense is based on the probable number of awards expected to vest. The total compensation expense related to equity awards was $1.6 million and $1.3 million in the first three months of 2021 and 2020, respectively, and the total income tax benefit was $0.3 million and $0.2 million for each period, respectively. Total unrecognized compensation expense relating to outstanding and unvested awards was $5.4 million, which will be recognized over the weighted average vesting period of 2.56 years.

Stock Options

Under the 2015 LTIP, as under the 2010 LTIP, we grant stock options for shares with an exercise price equal to the fair market value of the shares at the date of grant (subject to adjustments for changes in our capitalization, special dividends and other events as set forth in such plans). Options generally vest and become exercisable ratably over a five-year period and expire eight years after grant.

For most participants, the requisite service period and vesting period will be the same. For participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75, the requisite service period is deemed to be met and options are immediately expensed on the date of grant. For participants who will become retirement eligible during

the vesting period, the requisite service period over which expense is recognized is the period between the grant date and the attainment of retirement eligibility. Shares issued upon option exercise are newly issued shares.

The following tables summarize option activity for the three-month period ended March 31, 2021:

						Weighted		Aggregate
				Weighted		Average		Intrinsic
				Average		Remaining		Value
	Options			Exercise Price		Contractual Life		(in 000’s)
Outstanding options at January 1, 2021		1,632,334		$	70.67
Options granted		44,496			97.64
Options exercised		(121,645	)		56.04
Options canceled/forfeited		(600	)		93.24
Outstanding options at March 31, 2021		1,554,585		$	72.57		5.17	$	60,622
Exercisable options at March 31, 2021		563,215		$	61.80		3.75	$	28,029

The intrinsic value, which is the difference between the fair value and the exercise price, of options exercised was $6.9 million and $2.5 million during the first quarter of 2021 and 2020, respectively.

The fair value of options was estimated using a Black-Scholes based option pricing model with the following weighted average grant-date assumptions and weighted average fair values as of March 31:

	2021			2020
Weighted-average fair value of grants	$	13.82		$	14.48
Risk-free interest rates		0.27	%		1.54	%
Dividend yield		2.30	%		2.69	%
Expected volatility		22.67	%		22.68	%
Expected option life		4.96	years		4.99	years

The risk-free rate was determined based on U.S. treasury yields that most closely approximated the option’s expected life. The dividend yield was determined based on the average annualized quarterly dividends paid during the most recent five-year period and incorporated a consideration for special dividends paid in recent history. The expected volatility was calculated based on the median of the rolling volatilities for the expected life of the options. The expected option life was determined based on historical exercise behavior and the assumption that all outstanding options will be exercised at the midpoint of the current date and remaining contractual term, adjusted for the demographics of the current year’s grant.

Restricted Stock Units

In addition to stock options, restricted stock units (RSUs) are granted with a value equal to the closing stock price of the Company’s stock on the dates the units are granted. For employees, these units generally have a three-year cliff vesting, but have an accelerated vesting feature for participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75. For directors, these units vest on the earlier of one year from the date of grant or the next annual shareholders meeting. In addition, the RSUs have dividend participation, which accrue as additional units and are settled with granted stock units at the end of the vesting period.

				Weighted
				Average
				Grant Date
	RSUs			Fair Value
Nonvested at January 1, 2021		47,658		$	81.53
Reinvested		102			112.16
Forfeited		(51	)		93.42
Nonvested at March 31, 2021		47,709		$	81.58

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Operating Segment Information

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Operating Segment Information

6. OPERATING SEGMENT INFORMATION

Selected information by operating segment is presented in the table below. Additionally, the table reconciles segment totals to total earnings and total revenues.

	For the Three Months
Revenues	Ended March 31,
(in thousands)	2021			2020
Casualty	$	148,770		$	143,420
Property		51,642			44,348
Surety		28,183			27,814
Net premiums earned	$	228,595		$	215,582
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
Total consolidated revenue	$	287,331		$	118,117
Net Earnings
(in thousands)	2021			2020
Casualty	$	24,867		$	(1,323	)
Property		(1,005	)		9,908
Surety		6,055			8,654
Net underwriting income	$	29,917		$	17,239
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
General corporate expense and interest on debt		(5,243	)		(3,652	)
Equity in earnings of unconsolidated investees		6,424			4,514
Earnings (loss) before income taxes	$	89,834		$	(79,364	)
Income tax expense (benefit)		16,822			(18,097	)
Net earnings (loss)	$	73,012		$	(61,267	)

The following table further summarizes revenues by major product type within each operating segment:

	For the Three Months
Net Premiums Earned	Ended March 31,
(in thousands)	2021		2020
Casualty
Commercial excess and personal umbrella	$	51,554	$	40,088
General liability		22,407		23,998
Professional services		21,728		20,695
Commercial transportation		16,830		21,185
Small commercial		15,722		15,633
Executive products		5,241		7,331
Other casualty		15,288		14,490
Total	$	148,770	$	143,420
Property
Marine	$	22,958	$	19,577
Commercial property		22,712		19,155
Specialty personal		5,034		5,000
Other property		938		616
Total	$	51,642	$	44,348
Surety
Commercial	$	11,013	$	10,938
Miscellaneous		10,635		10,516
Contract		6,535		6,360
Total	$	28,183	$	27,814
Grand Total	$	228,595	$	215,582

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Leases

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Leases

7. LEASES

Right-of-use (ROU) assets are included in the other assets line item and lease liabilities are included in the other liabilities line item of the consolidated balance sheet. We determine if a contract contains a lease at inception and recognize operating lease ROU assets and operating lease liabilities based on the present value of the future minimum lease payments at the commencement date. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of future payments. Lease agreements may include options to extend or terminate. The options are exercised at our discretion and are included in operating lease liabilities if it is reasonably certain the option will be exercised. Lease agreements have lease and non-lease components, which are accounted for as a single lease component. Operating lease cost for future minimum lease payments is recognized on a straight-line basis over the lease term. Variable lease cost is expensed in the period in which the obligation is incurred. Sublease income is recognized on a straight-line basis over the sublease term.

The Company’s operating lease obligations are for branch office facilities. The components of lease expense and other lease information as of and during the three-month periods ended March 31, 2021 and 2020 are as follows:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Operating lease cost	$	1,351		$	1,406
Variable lease cost		384			355
Sublease income		(123	)		—
Total lease cost	$	1,612		$	1,761
Cash paid for amounts included in measurement of lease liabilities
Operating cash outflows from operating leases	$	1,488		$	1,486
ROU assets obtained in exchange for new operating lease liabilities	$	58		$	15
Reduction to ROU assets resulting from reduction to lease liabilities	$	59		$	—
Other non-cash reductions to ROU assets	$	—		$	1,192

(in thousands)	March 31, 2021			December 31, 2020
Operating lease ROU assets	$	14,952		$	16,200
Operating lease liabilities	$	17,676		$	19,072
Weighted-average remaining lease term - operating leases	3.68		years	3.87		years
Weighted-average discount rate - operating leases		2.33	%		2.32	%

Future minimum lease payments under non-cancellable leases as of March 31, 2021 were as follows:

(in thousands)	March 31, 2021
2021	$	4,466
2022		5,941
2023		4,424
2024		2,334
2025		802
2026		242
Thereafter		321
Total future minimum lease payments	$	18,530
Less imputed interest		(854	)
Total operating lease liability	$	17,676

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Basis of Presentation

A. BASIS OF PRESENTATION

The unaudited condensed consolidated interim financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial reporting and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all the disclosures required by GAAP for complete financial statements. As such, these unaudited condensed consolidated interim financial statements should be read in conjunction with our 2020 Annual Report on Form 10-K. Management believes that the disclosures are adequate to make the information presented not misleading, and all normal and recurring adjustments necessary to present fairly the financial position at March 31, 2021 and the results of operations of RLI Corp. (the Company) and subsidiaries for all periods presented have been made. The results of operations for any interim period are not necessarily indicative of the operating results for a full year. Certain reclassifications were made to 2020 to conform to the classifications used in the current year.

The preparation of the unaudited condensed consolidated interim financial statements requires management to make estimates and assumptions relating to the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated interim financial statements and the reported amounts of revenue and expenses during the period. These estimates are inherently subject to change and actual results could differ significantly from these estimates.

Adopted Accounting Standards

B. ADOPTED ACCOUNTING STANDARDS

No new accounting standards applicable in 2021 impact our financial statements.

Prospective Accounting Standards

C. PROSPECTIVE ACCOUNTING STANDARDS

There are no prospective accounting standards which would have a material impact on our financial statements as of March 31, 2021.

Reinsurance

D. REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on unpaid losses and settlement expenses are reported separately as an asset, rather than being netted with the related liability, since reinsurance does not relieve the Company of our liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. We continually monitor the financial condition of our reinsurers and actively follow up on any past due or disputed amounts. As part of our monitoring efforts, we review their annual financial statements and Securities and Exchange Commission (SEC) filings for those reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the AM Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including a segment-based analysis using the average default rating percentage by S&P rating, which assists the Company in assessing the sufficiency of the existing allowance. Additionally, we perform an in-depth reinsurer financial condition analysis prior to the renewal of our reinsurance placements.

Our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover. Once regulatory action (such as receivership, finding of insolvency, order of conservation or order of liquidation) is taken against a reinsurer, all paid and unpaid balances recoverable for the reinsurer are specifically identified and expensed into our allowance for estimated unrecoverable amounts from reinsurers. We then re-evaluate the remaining allowance and determine whether the balance is sufficient as detailed above and if needed, an additional allowance is recognized and income charged.

The allowances for uncollectible amounts on paid and unpaid reinsurance recoverables were $15.9 million and $9.0 million, respectively, at March 31, 2021. At December 31, 2020, the amounts were $15.9 million and $8.6 million, respectively. Changes in the allowances were due to changes in the amount of reinsurance balances outstanding, the composition of reinsurers from whom the balances were recoverable and their associated S&P default ratings. No write-offs were applied to the allowances in the first three months of 2021 and less than $0.1 million was recovered. We have no receivables with a due date that extends beyond one year that are not included in our allowance for uncollectible amounts.

Intangible Assets

E. INTANGIBLE ASSETS

The composition of goodwill and intangible assets at March 31, 2021 and December 31, 2020 is detailed in the following table:

	March 31,		December 31,
(in thousands)	2021		2020
Goodwill
Surety	$	40,816	$	40,816
Casualty		5,246		5,246
Total goodwill	$	46,062	$	46,062
Intangibles
Indefinite-lived intangibles - state insurance licenses		7,500		7,500
Definite-lived intangibles, net of accumulated amortization of $3,980 at 3/31/21 and $3,878 at 12/31/20		55		157
Total intangibles	$	7,555	$	7,657
Total goodwill and intangibles	$	53,617	$	53,719

All definite-lived intangible assets are amortized based on their estimated useful lives. Amortization of intangible assets was $0.1 million for the first quarter of 2021 and 2020.

Annual impairment assessments were performed on our goodwill and state insurance license indefinite-lived intangible asset during 2020. Based upon these reviews, none of the assets were impaired. In addition, there were no triggering events as of March 31, 2021 that would suggest an updated impairment test would be needed for our goodwill and intangible assets.

Earnings Per Share

F. EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items. The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the unaudited condensed consolidated interim financial statements:

	For the Three Months						For the Three Months
	Ended March 31, 2021						Ended March 31, 2020
	Income		Shares		Per Share		Income			Shares		Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)		Amount		(Numerator)			(Denominator)		Amount
Basic EPS
Earnings (loss) available to common shareholders	$	73,012		45,178	$	1.62	$	(61,267	)		44,920	$	(1.36	)
Effect of Dilutive Securities
Stock options and restricted stock units		—		496				—			—
Diluted EPS
Earnings (loss) available to common shareholders	$	73,012		45,674	$	1.60	$	(61,267	)		44,920	$	(1.36	)
Anti-dilutive options excluded from diluted EPS				—							94

Comprehensive Earnings

G. COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent. Other comprehensive earnings (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax benefit of $11.9 million and $3.5 million for the first quarter of 2021 and 2020, respectively.

Unrealized losses, net of tax, recognized in other comprehensive earnings (loss) were $44.7 million for the first three months of 2021, compared to $13.0 million during the same period last year. The unrealized losses were attributable to increased interest rates in both periods, which decreased the fair value of securities held in the fixed income portfolio.

The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the unaudited condensed consolidated interim financial statements:

(in thousands)	For the Three Months
	Ended March 31,
Unrealized Gains/Losses on Available-for-Sale Securities	2021			2020
Beginning balance	$	108,714		$	52,473
Cumulative-effect adjustment of ASU 2016-13		—			22
Adjusted beginning balance	$	108,714		$	52,495
Other comprehensive loss before reclassifications		(43,795	)		(11,880	)
Amounts reclassified from accumulated other comprehensive earnings		(952	)		(1,151	)
Net current-period other comprehensive loss	$	(44,747	)	$	(13,031	)
Ending balance	$	63,967		$	39,464
Balance of securities for which an allowance for credit losses has been recognized in net earnings	$	463		$	5,727

Credit losses on or the sale of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table:

	Amount Reclassified from Accumulated Other
(in thousands)	Comprehensive Earnings
	For the Three Months
Component of Accumulated	Ended March 31,						Affected line item in the
Other Comprehensive Earnings	2021			2020			Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	1,183		$	2,306		Net realized gains
		22			(849	)	Credit losses presented within net realized gains
	$	1,205		$	1,457		Earnings (loss) before income taxes
		(253	)		(306	)	Income tax benefit (expense)
	$	952		$	1,151		Net earnings (loss)

Fair Value Measurements

H. FAIR VALUE MEASUREMENTS

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. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All corporate, agency, government and municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Commercial Mortgage-backed Securities (CMBS) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate MBS and CMBS volatility, an option adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMBS and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMBS and ABS are deemed Level 2.

Regulation D Private Placement Securities: All Regulation D privately-placed bonds are classified as corporate securities and deemed Level 3. The pricing vendor evaluation methodology for these securities includes a combination of observable and unobservable inputs. Observable inputs include public corporate spread matrices classified by sector, rating and average life, as well as investment and non-investment grade matrices created from fixed income indices. Unobservable inputs include a liquidity spread premium calculated based on public corporate spread and private corporate spread matrices. The quantitative detail of the liquidity spread premium is neither provided nor reasonably available to the Company. An increase to the credit spread assumptions would result in a lower fair value.

For all of our fixed income securities classified as Level 2, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. If discrepancies are found in our comparisons, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 fixed income securities provided by our pricing services are reasonable.

Common Stock: As of March 31, 2021, nearly all of our common stock holdings were traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity securities not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy.

Risks and Uncertainties

I. RISKS AND UNCERTAINTIES

Certain risks and uncertainties are inherent to our day-to-day operations. Adverse changes in the economy could lower demand for our insurance products or negatively impact our investment results, both of which could have an adverse effect on the revenue and profitability of our operations. The COVID-19 pandemic may continue to result in significant disruptions in economic activity and financial markets. The cumulative effects of any public health outbreak could reduce demand for our insurance policies, result in increased level of losses, settlement expenses or other operating costs, reduce the market value of invested assets held by the Company or negatively impact the fair value of our goodwill.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Schedule of Goodwill and Intangible Assets

	March 31,		December 31,
(in thousands)	2021		2020
Goodwill
Surety	$	40,816	$	40,816
Casualty		5,246		5,246
Total goodwill	$	46,062	$	46,062
Intangibles
Indefinite-lived intangibles - state insurance licenses		7,500		7,500
Definite-lived intangibles, net of accumulated amortization of $3,980 at 3/31/21 and $3,878 at 12/31/20		55		157
Total intangibles	$	7,555	$	7,657
Total goodwill and intangibles	$	53,617	$	53,719

Schedule of Reconciliation of Numerator and Denominator of the Basic and Diluted Earnings Per Share Computations

	For the Three Months						For the Three Months
	Ended March 31, 2021						Ended March 31, 2020
	Income		Shares		Per Share		Income			Shares		Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)		Amount		(Numerator)			(Denominator)		Amount
Basic EPS
Earnings (loss) available to common shareholders	$	73,012		45,178	$	1.62	$	(61,267	)		44,920	$	(1.36	)
Effect of Dilutive Securities
Stock options and restricted stock units		—		496				—			—
Diluted EPS
Earnings (loss) available to common shareholders	$	73,012		45,674	$	1.60	$	(61,267	)		44,920	$	(1.36	)
Anti-dilutive options excluded from diluted EPS				—							94

Schedule of Changes in the Balance of Each Component of Accumulated Other Comprehensive Earnings

(in thousands)	For the Three Months
	Ended March 31,
Unrealized Gains/Losses on Available-for-Sale Securities	2021			2020
Beginning balance	$	108,714		$	52,473
Cumulative-effect adjustment of ASU 2016-13		—			22
Adjusted beginning balance	$	108,714		$	52,495
Other comprehensive loss before reclassifications		(43,795	)		(11,880	)
Amounts reclassified from accumulated other comprehensive earnings		(952	)		(1,151	)
Net current-period other comprehensive loss	$	(44,747	)	$	(13,031	)
Ending balance	$	63,967		$	39,464
Balance of securities for which an allowance for credit losses has been recognized in net earnings	$	463		$	5,727

Schedule of Effects of Reclassifications out of Accumulated Other Comprehensive Earnings

	Amount Reclassified from Accumulated Other
(in thousands)	Comprehensive Earnings
	For the Three Months
Component of Accumulated	Ended March 31,						Affected line item in the
Other Comprehensive Earnings	2021			2020			Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	1,183		$	2,306		Net realized gains
		22			(849	)	Credit losses presented within net realized gains
	$	1,205		$	1,457		Earnings (loss) before income taxes
		(253	)		(306	)	Income tax benefit (expense)
	$	952		$	1,151		Net earnings (loss)

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Investments (Tables)

3 Months Ended

Mar. 31, 2021

Investments Debt And Equity Securities [Abstract]

Schedule of Disposition of Fixed Income and Equity Securities

Sales	Proceeds		Gross Realized					Net Realized
(in thousands)	From Sales		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	21,273	$	1,003	$	(27	)	$	976
Equities		47,638		14,233		(1,150	)		13,083
2020
Available-for-sale	$	19,858	$	2,270	$	(102	)	$	2,168
Equities		38,042		17,792		(2,633	)		15,159

Calls/Maturities			Gross Realized					Net Realized
(in thousands)	Proceeds		Gains		Losses			Gain (Loss)
2021
Available-for-sale	$	96,285	$	255	$	(48	)	$	207
2020
Available-for-sale	$	54,890	$	145	$	(7	)	$	138

Fair Value, Assets Measured on Recurring Basis

Assets measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 are summarized below:

	As of March 31, 2021
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	170,422	$	—	$	170,422
U.S. agency			—		31,666		—		31,666
Non-U.S. government & agency			—		8,555		—		8,555
Agency MBS			—		369,212		—		369,212
ABS/CMBS/MBS*			—		218,232		—		218,232
Corporate			—		810,751		22,452		833,203
Municipal			—		544,579		—		544,579
Total fixed income securities - available-for-sale		$	—	$	2,153,417	$	22,452	$	2,175,869
Equity securities			555,105		104		—		555,209
Other invested assets			—		—		—		—
Total		$	555,105	$	2,153,521	$	22,452	$	2,731,078

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

	As of December 31, 2020
	Fair Value Measurements Using
		Quoted Prices in		Significant Other		Significant
		Active Markets for		Observable		Unobservable
		Identical Assets		Inputs		Inputs
(in thousands)		(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government		$	—	$	183,357	$	—	$	183,357
U.S. agency			—		32,872		—		32,872
Non-U.S. government & agency			—		10,965		—		10,965
Agency MBS			—		402,071		—		402,071
ABS/CMBS/MBS*			—		218,373		—		218,373
Corporate			—		798,794		17,798		816,592
Municipal			—		532,396		—		532,396
Total fixed income securities - available-for-sale		$	—	$	2,178,828	$	17,798	$	2,196,626
Equity securities			523,923		83		—		524,006
Other invested assets			6,068		—		—		6,068
Total		$	529,991	$	2,178,911	$	17,798	$	2,726,700

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

Summary of Changes in Balance of Level 3 Securities

(in thousands)	Level 3 Securities
Balance as of January 1, 2021	$	17,798
Net realized and unrealized gains (losses)
Included in net earnings as a part of:
Net investment income		(13	)
Net realized gains		(192	)
Included in other comprehensive earnings (loss)		(606	)
Total net realized and unrealized gains (losses)	$	(811	)
Purchases		5,465
Balance as of March 31, 2021	$	22,452
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in net realized gains	$	(192	)
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in other comprehensive earnings	$	(606	)

Schedule of Contractual Maturity of Securities

	March 31, 2021
(in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	105,159	$	106,340
Due after one year through five years		512,686		539,027
Due after five years through 10 years		522,850		552,085
Due after 10 years		382,756		390,973
ABS/CMBS/MBS*		573,401		587,444
Total available-for-sale	$	2,096,852	$	2,175,869

* Asset-backed, commercial mortgage-backed and mortgage-backed securities

Schedule of Amortized Cost and Fair Value of Available-for-sale Securities

The amortized cost and fair value of available-for-sale securities at March 31, 2021 and December 31, 2020 are presented in the tables below. Amortized cost does not include the $14.9 million of accrued interest receivable as of March 31, 2021 and December 31, 2020.

	March 31, 2021
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	161,956	$	—		$	9,539	$	(1,073	)	$	170,422
U.S. agency		28,883		—			2,783		—			31,666
Non-U.S. government & agency		8,296		—			407		(148	)		8,555
Agency MBS		358,224		—			14,007		(3,019	)		369,212
ABS/CMBS/MBS*		215,177		—			3,713		(658	)		218,232
Corporate		796,042		(375	)		42,200		(4,664	)		833,203
Municipal		528,274		—			21,781		(5,476	)		544,579
Total Fixed Income	$	2,096,852	$	(375	)	$	94,430	$	(15,038	)	$	2,175,869

	December 31, 2020
	Cost or		Allowance			Gross		Gross
	Amortized		for Credit			Unrealized		Unrealized			Fair
(in thousands)	Cost		Losses			Gains		Losses			Value
U.S. government	$	170,110	$	—		$	13,504	$	(257	)	$	183,357
U.S. agency		28,902		—			3,970		—			32,872
Non-U.S. government & agency		10,298		—			667		—			10,965
Agency MBS		384,015		—			18,789		(733	)		402,071
ABS/CMBS/MBS*		213,223		(17	)		5,580		(413	)		218,373
Corporate		753,404		(380	)		64,501		(933	)		816,592
Municipal		501,515		—			31,099		(218	)		532,396
Total Fixed Income	$	2,061,467	$	(397	)	$	138,110	$	(2,554	)	$	2,196,626

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

Schedule of Debt Securities Available-for-sale Allowance for Credit Loss

	Three Months Ended March 31,
(in thousands)	2021			2020
Beginning balance	$	397		$	—
Adoption impact of ASU 2016-13		-			28
Increase to allowance from securities for which credit losses were not previously recorded		-			624
Net increase (decrease) from securities that had an allowance at the beginning of the period		(22	)		226
Balance as of March 31,	$	375		$	878

Schedule of Securities in an Unrealized Loss Position Segregated by Type and Length of Time in an Unrealized Loss Position

	March 31, 2021									December 31, 2020
(in thousands)	< 12 Mos.			12 Mos. & Greater			Total			< 12 Mos.			12 Mos. & Greater			Total
U.S. government
Fair value	$	4,864		$	—		$	4,864		$	5,680		$	—		$	5,680
Amortized cost		5,937			—			5,937			5,937			—			5,937
Unrealized loss	$	(1,073	)	$	—		$	(1,073	)	$	(257	)	$	—		$	(257	)
Non-U.S. government
Fair value	$	2,852		$	—		$	2,852		$	—		$	—		$	—
Amortized cost		3,000			—			3,000			—			—			—
Unrealized Loss	$	(148	)	$	—		$	(148	)	$	—		$	—		$	—
Agency MBS
Fair value	$	92,446		$	—		$	92,446		$	43,999		$	—		$	43,999
Amortized cost		95,465			—			95,465			44,732			—			44,732
Unrealized loss	$	(3,019	)	$	—		$	(3,019	)	$	(733	)	$	—		$	(733	)
ABS/CMBS/MBS*
Fair value	$	55,703		$	7,235		$	62,938		$	32,771		$	16,161		$	48,932
Amortized cost		56,341			7,255			63,596			33,094			16,251			49,345
Unrealized loss	$	(638	)	$	(20	)	$	(658	)	$	(323	)	$	(90	)	$	(413	)
Corporate
Fair value	$	165,717		$	14,193		$	179,910		$	52,655		$	6,235		$	58,890
Amortized cost		170,204			14,370			184,574			53,440			6,383			59,823
Unrealized loss	$	(4,487	)	$	(177	)	$	(4,664	)	$	(785	)	$	(148	)	$	(933	)
Municipal
Fair value	$	115,596		$	—		$	115,596		$	25,676		$	—		$	25,676
Amortized cost		121,072			—			121,072			25,894			—			25,894
Unrealized loss	$	(5,476	)	$	—		$	(5,476	)	$	(218	)	$	—		$	(218	)
Total fixed income
Fair value	$	437,178		$	21,428		$	458,606		$	160,781		$	22,396		$	183,177
Amortized cost		452,019			21,625			473,644			163,097			22,634			185,731
Unrealized loss	$	(14,841	)	$	(197	)	$	(15,038	)	$	(2,316	)	$	(238	)	$	(2,554	)

* Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities

Schedule of Credit Quality Indicators for Investments in Unrealized Loss Positions

	Equivalent	Equivalent	(dollars in thousands)
NAIC	S&P	Moody’s	Amortized				Unrealized			Percent
Rating	Rating	Rating	Cost		Fair Value		Loss			to Total
1	AAA/AA/A	Aaa/Aa/A	$	365,229	$	352,591	$	(12,638	)		84.1	%
2	BBB	Baa		55,575		54,161		(1,414	)		9.4	%
3	BB	Ba		23,838		23,455		(383	)		2.5	%
4	B	B		26,201		25,616		(585	)		3.9	%
5	CCC	Caa		2,801		2,783		(18	)		0.1	%
6	CC or lower	Ca or lower		-		-		-			0.0	%
		Total	$	473,644	$	458,606	$	(15,038	)		100.0	%

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Historical Loss And LAE Development (Tables)

3 Months Ended

Mar. 31, 2021

Historical Loss And L A E Development Disclosure [Abstract]

Schedule of Reconciliation of Unpaid Losses and Settlement Expenses (LAE)

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the first three months of 2021 and 2020:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Unpaid losses and LAE at beginning of year
Gross	$	1,750,049		$	1,574,352
Ceded		(443,729	)		(384,517	)
Net	$	1,306,320		$	1,189,835
Adoption impact of ASU 2016-13 on reinsurance balances recoverable	$	—		$	(1,345	)
Increase (decrease) in incurred losses and LAE
Current accident year	$	142,013		$	126,194
Prior accident years		(37,121	)		(15,173	)
Total incurred	$	104,892		$	111,021
Loss and LAE payments for claims incurred
Current accident year	$	(5,962	)	$	(9,295	)
Prior accident years		(64,896	)		(81,897	)
Total paid	$	(70,858	)	$	(91,192	)
Net unpaid losses and LAE at March 31	$	1,340,354		$	1,208,319
Unpaid losses and LAE at March 31
Gross	$	1,795,275		$	1,574,760
Ceded		(454,921	)		(366,441	)
Net	$	1,340,354		$	1,208,319

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Reconciliation of Income Tax Expense Attributable to Income from Operations with Amounts Computed by Applying U.S. Federal Tax Rate to Pretax Income from Continuing Operations

	For the Three Months Ended March 31,
	2021							2020
(in thousands)	Amount			%				Amount			%
Provision for income taxes at the statutory rate of 21%	$	18,865			21.0		%	$	(16,666	)		21.0		%
Increase (reduction) in taxes resulting from:
Excess tax benefit on share-based compensation		(1,924	)		(2.1	)	%		(1,029	)		1.3		%
Tax exempt interest income		(319	)		(0.4	)	%		(313	)		0.4		%
Dividends received deduction		(236	)		(0.3	)	%		(271	)		0.3		%
Investment tax credit		(801	)		(0.9	)	%		(1,321	)		1.7		%
ESOP dividends paid deduction		(130	)		(0.1	)	%		(132	)		0.2		%
Nondeductible expenses		411			0.5		%		203			(0.3	)	%
Other items, net		956			1.0		%		1,432			(1.8	)	%
Total tax expense (benefit)	$	16,822			18.7		%	$	(18,097	)		22.8		%

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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Option Activity

The following tables summarize option activity for the three-month period ended March 31, 2021:

						Weighted		Aggregate
				Weighted		Average		Intrinsic
				Average		Remaining		Value
	Options			Exercise Price		Contractual Life		(in 000’s)
Outstanding options at January 1, 2021		1,632,334		$	70.67
Options granted		44,496			97.64
Options exercised		(121,645	)		56.04
Options canceled/forfeited		(600	)		93.24
Outstanding options at March 31, 2021		1,554,585		$	72.57		5.17	$	60,622
Exercisable options at March 31, 2021		563,215		$	61.80		3.75	$	28,029

Summary of Weighted Average Grant-date Assumptions and Weighted Average Fair Values

The fair value of options was estimated using a Black-Scholes based option pricing model with the following weighted average grant-date assumptions and weighted average fair values as of March 31:

	2021			2020
Weighted-average fair value of grants	$	13.82		$	14.48
Risk-free interest rates		0.27	%		1.54	%
Dividend yield		2.30	%		2.69	%
Expected volatility		22.67	%		22.68	%
Expected option life		4.96	years		4.99	years

Schedule of Restricted Stock Units Activity

				Weighted
				Average
				Grant Date
	RSUs			Fair Value
Nonvested at January 1, 2021		47,658		$	81.53
Reinvested		102			112.16
Forfeited		(51	)		93.42
Nonvested at March 31, 2021		47,709		$	81.58

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Operating Segment Information (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Summary of Selected Information by Operating Segment

Selected information by operating segment is presented in the table below. Additionally, the table reconciles segment totals to total earnings and total revenues.

	For the Three Months
Revenues	Ended March 31,
(in thousands)	2021			2020
Casualty	$	148,770		$	143,420
Property		51,642			44,348
Surety		28,183			27,814
Net premiums earned	$	228,595		$	215,582
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
Total consolidated revenue	$	287,331		$	118,117
Net Earnings
(in thousands)	2021			2020
Casualty	$	24,867		$	(1,323	)
Property		(1,005	)		9,908
Surety		6,055			8,654
Net underwriting income	$	29,917		$	17,239
Net investment income		16,424			17,778
Net realized gains		14,150			15,152
Net unrealized gains (losses) on equity securities		28,162			(130,395	)
General corporate expense and interest on debt		(5,243	)		(3,652	)
Equity in earnings of unconsolidated investees		6,424			4,514
Earnings (loss) before income taxes	$	89,834		$	(79,364	)
Income tax expense (benefit)		16,822			(18,097	)
Net earnings (loss)	$	73,012		$	(61,267	)

Summary of Revenue by Major Product Type

The following table further summarizes revenues by major product type within each operating segment:

	For the Three Months
Net Premiums Earned	Ended March 31,
(in thousands)	2021		2020
Casualty
Commercial excess and personal umbrella	$	51,554	$	40,088
General liability		22,407		23,998
Professional services		21,728		20,695
Commercial transportation		16,830		21,185
Small commercial		15,722		15,633
Executive products		5,241		7,331
Other casualty		15,288		14,490
Total	$	148,770	$	143,420
Property
Marine	$	22,958	$	19,577
Commercial property		22,712		19,155
Specialty personal		5,034		5,000
Other property		938		616
Total	$	51,642	$	44,348
Surety
Commercial	$	11,013	$	10,938
Miscellaneous		10,635		10,516
Contract		6,535		6,360
Total	$	28,183	$	27,814
Grand Total	$	228,595	$	215,582

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Leases (Tables)

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Schedule of Components of Lease Expense and Other lease Information

The Company’s operating lease obligations are for branch office facilities. The components of lease expense and other lease information as of and during the three-month periods ended March 31, 2021 and 2020 are as follows:

	For the Three Months
	Ended March 31,
(in thousands)	2021			2020
Operating lease cost	$	1,351		$	1,406
Variable lease cost		384			355
Sublease income		(123	)		—
Total lease cost	$	1,612		$	1,761
Cash paid for amounts included in measurement of lease liabilities
Operating cash outflows from operating leases	$	1,488		$	1,486
ROU assets obtained in exchange for new operating lease liabilities	$	58		$	15
Reduction to ROU assets resulting from reduction to lease liabilities	$	59		$	—
Other non-cash reductions to ROU assets	$	—		$	1,192

(in thousands)	March 31, 2021			December 31, 2020
Operating lease ROU assets	$	14,952		$	16,200
Operating lease liabilities	$	17,676		$	19,072
Weighted-average remaining lease term - operating leases	3.68		years	3.87		years
Weighted-average discount rate - operating leases		2.33	%		2.32	%

Schedule of Future Minimum Lease Payments under Non-cancellable Leases

Future minimum lease payments under non-cancellable leases as of March 31, 2021 were as follows:

(in thousands)	March 31, 2021
2021	$	4,466
2022		5,941
2023		4,424
2024		2,334
2025		802
2026		242
Thereafter		321
Total future minimum lease payments	$	18,530
Less imputed interest		(854	)
Total operating lease liability	$	17,676

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Summary of Significant Accounting Policies - Reinsurance - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Ceded Credit Risk [Line Items]
Amount of allowance for uncollectible amounts on paid recoverables	$ 15,900,000	$ 15,900,000
Reinsurance balances recoverable on unpaid losses and settlement expenses, allowances for uncollectible amounts	8,953,000	$ 8,634,000
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Financing receivable with due date extend beyond one year	$ 0
Threshold period for including reinsurance receivables in the allowance for uncollectible amounts	1 year
Maximum
Ceded Credit Risk [Line Items]
Financing Receivable, Allowance for Credit Loss, Recovery	$ 100,000

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Summary of Significant Accounting Policies - Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 46,062	$ 46,062
Indefinite-lived intangibles - state insurance licenses	7,500	7,500
Definite-lived intangibles, net of accumulated amortization of $3,980 at 3/31/21 and $3,878 at 12/31/20	55	157
Total intangibles	7,555	7,657
Total goodwill and intangibles	53,617	53,719
Surety
Business Acquisition [Line Items]
Goodwill	40,816	40,816
Casualty
Business Acquisition [Line Items]
Goodwill	$ 5,246	$ 5,246

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Summary of Significant Accounting Policies - Intangible Assets - Schedule of Goodwill and Intangible Assets (Parenthetical) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Accumulated amortization of definite-lived intangibles	$ 3,980	$ 3,878

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Summary of Significant Accounting Policies - Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Business Acquisition [Line Items]
Amortization of intangible assets	$ 100,000	$ 100,000
Impairment of indefinite-lived intangible assets	0
Surety
Business Acquisition [Line Items]
Goodwill, Impairment Loss	0
Casualty
Business Acquisition [Line Items]
Goodwill, Impairment Loss	$ 0

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Summary of Significant Accounting Policies - Schedule of Reconciliation of Numerator and Denominator of the Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic EPS, Income (Numerator)
Earnings (loss) available to common shareholders	$ 73,012	$ (61,267)
Diluted EPS, Income (Numerator)
Earnings (loss) available to common shareholders	$ 73,012	$ (61,267)
Basic EPS, Weighted Average Shares (Denominator)
Number of shares outstanding	45,178	44,920
Effect of Dilutive Securities, Shares (Denominator)
Stock options and restricted stock units	496
Diluted EPS, Weighted Average Shares (Denominator)
Number of shares outstanding	45,674	44,920
Earnings Per Share, Diluted, Other Disclosures
Anti-dilutive options excluded from diluted EPS		94
Basic EPS, Per Share Amount
Basic net earnings per share (in dollars per share)	$ 1.62	$ (1.36)
Diluted EPS, Per Share Amount
Diluted earnings per share (in dollars per share)	$ 1.60	$ (1.36)

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Summary of Significant Accounting Policies - Comprehensive Earnings - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
COMPREHENSIVE EARNINGS
Tax rate used (as a percent)	21.00%	21.00%
Other comprehensive income (loss), tax (benefit)	$ (11,900)	$ (3,500)
Changes in the balance of each component of accumulated other comprehensive earnings
Other comprehensive earnings (loss), net of tax	$ (44,747)	$ (13,031)

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Summary of Significant Accounting Policies - Schedule of Changes in the Balance of Each Component of Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance	$ 108,714
Accounting Standards Update [Extensible List]		ASU 2016-13
Net current-period other comprehensive loss	(44,747)	$ (13,031)
Ending balance	63,967
Balance of securities for which an allowance for credit losses has been recognized in net earnings	463	5,727
Unrealized Gains and Losses on Available-for-Sale Securities
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance	108,714	52,473
Other comprehensive loss before reclassifications	(43,795)	(11,880)
Amounts reclassified from accumulated other comprehensive earnings	(952)	(1,151)
Ending balance	63,967	39,464
Unrealized Gains and Losses on Available-for-Sale Securities | Cumulative Effect, Period of Adoption, Adjustment
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance		$ 22
Accounting Standards Update [Extensible List]		ASU 2016-13
Unrealized Gains and Losses on Available-for-Sale Securities | Cumulative Effect, Period of Adoption, Adjusted Balance
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance	$ 108,714	$ 52,495

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Summary of Significant Accounting Policies - Schedule of Effects of Reclassifications out of Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Reclassification Adjustment Out of Accumulated Other Comprehensive Income
Net realized gains	$ 14,150	$ 15,152
Earnings (loss) before income taxes	89,834	(79,364)
Income tax benefit (expense)	(16,822)	18,097
Net earnings (loss)	73,012	(61,267)
Unrealized Gains and Losses on Available-for-Sale Securities | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out of Accumulated Other Comprehensive Income
Net realized gains	1,183	2,306
Credit losses on available-for-sale securities	22	(849)
Earnings (loss) before income taxes	1,205	1,457
Income tax benefit (expense)	(253)	(306)
Net earnings (loss)	$ 952	$ 1,151

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Investments - Disposition of Fixed Income and Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales | Debt Securities | Available for sale securities
Summary of the disposition of fixed income and equity securities
Proceeds From Sales	$ 21,273	$ 19,858
Gross Realized Gains	1,003	2,270
Gross Realized Losses	(27)	(102)
Net Realized Gain (Loss)	976	2,168
Sales | Equity Securities
Summary of the disposition of fixed income and equity securities
Proceeds From Sales	47,638	38,042
Gross Realized Gains	14,233	17,792
Gross Realized Losses	(1,150)	(2,633)
Net Realized Gain (Loss)	13,083	15,159
Calls/Maturities | Debt Securities | Available for sale securities
Summary of the disposition of fixed income and equity securities
Proceeds From Sales	96,285	54,890
Gross Realized Gains	255	145
Gross Realized Losses	(48)	(7)
Net Realized Gain (Loss)	$ 207	$ 138

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Investments - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets measured at Fair Value
Available-for-sale fixed income	$ 2,175,869	$ 2,196,626
Equity securities	555,209	524,006
Municipal
Assets measured at Fair Value
Available-for-sale fixed income	544,579	532,396
Fair Value Measured on Recurring Basis
Assets measured at Fair Value
Available-for-sale fixed income	2,175,869	2,196,626
Equity securities	555,209	524,006
Other invested assets		6,068
Total assets at fair value	2,731,078	2,726,700
Fair Value Measured on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets measured at Fair Value
Equity securities	555,105	523,923
Other invested assets		6,068
Total assets at fair value	555,105	529,991
Fair Value Measured on Recurring Basis | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	2,153,417	2,178,828
Equity securities	104	83
Total assets at fair value	2,153,521	2,178,911
Fair Value Measured on Recurring Basis | Significant Unobservable Inputs (Level 3)
Assets measured at Fair Value
Available-for-sale fixed income	22,452	17,798
Total assets at fair value	22,452	17,798
Fair Value Measured on Recurring Basis | U.S. government
Assets measured at Fair Value
Available-for-sale fixed income	170,422	183,357
Fair Value Measured on Recurring Basis | U.S. government | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	170,422	183,357
Fair Value Measured on Recurring Basis | U.S. Agency
Assets measured at Fair Value
Available-for-sale fixed income	31,666	32,872
Fair Value Measured on Recurring Basis | U.S. Agency | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	31,666	32,872
Fair Value Measured on Recurring Basis | Non-U.S. government & agency
Assets measured at Fair Value
Available-for-sale fixed income	8,555	10,965
Fair Value Measured on Recurring Basis | Non-U.S. government & agency | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	8,555	10,965
Fair Value Measured on Recurring Basis | Agency MBS
Assets measured at Fair Value
Available-for-sale fixed income	369,212	402,071
Fair Value Measured on Recurring Basis | Agency MBS | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	369,212	402,071
Fair Value Measured on Recurring Basis | ABS/CMBS/MBS
Assets measured at Fair Value
Available-for-sale fixed income	218,232	218,373
Fair Value Measured on Recurring Basis | ABS/CMBS/MBS | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	218,232	218,373
Fair Value Measured on Recurring Basis | Corporate Debt
Assets measured at Fair Value
Available-for-sale fixed income	833,203	816,592
Fair Value Measured on Recurring Basis | Corporate Debt | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	810,751	798,794
Fair Value Measured on Recurring Basis | Corporate Debt | Significant Unobservable Inputs (Level 3)
Assets measured at Fair Value
Available-for-sale fixed income	22,452	17,798
Fair Value Measured on Recurring Basis | Municipal
Assets measured at Fair Value
Available-for-sale fixed income	544,579	532,396
Fair Value Measured on Recurring Basis | Municipal | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	$ 544,579	$ 532,396

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Investments - Summary of Changes in Balance of Level 3 securities (Details) - Regulation D Private Placement Fixed Income Securities $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Summary of changes in Level 3 securities
Beginning balance	$ 17,798
Net investment income	(13)
Net realized gains	(192)
Included in other comprehensive earnings (loss)	(606)
Total net realized and unrealized gains (losses)	(811)
Purchases	5,465
Ending balance	22,452
Net Realized Gains (Losses)
Summary of changes in Level 3 securities
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end	(192)
Other Comprehensive Earnings (Loss)
Summary of changes in Level 3 securities
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end	$ (606)

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Investments - Amortized Cost and Fair Value of Available-for-sale Fixed Income Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less	$ 105,159
Due after one year through five years	512,686
Due after five years through 10 years	522,850
Due after 10 years	382,756
ABS/CMBS/MBS	573,401
Total available-for-sale	2,096,852	$ 2,061,467
Fair Value
Due in one year or less	106,340
Due after one year through five years	539,027
Due after five years through 10 years	552,085
Due after 10 years	390,973
ABS/CMBS/MBS	587,444
Total available-for-sale	$ 2,175,869	$ 2,196,626

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Investments - Additional Information (Details) $ in Thousands	Mar. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($)
Investment Holdings [Line Items]
Accrued investment income | $	$ 16,109	$ 16,126
ASU 2016-13
Investment Holdings [Line Items]
Change in accounting principle accounting standards update adopted	true
Change in accounting principle accounting standards update adoption date	Jan. 01, 2020
Debt Securities
Investment Holdings [Line Items]
Accrued investment income | $	$ 14,900	14,900
Number of debt securities for which there is an allowance for credit losses	16
Number of debt securities in an unrealized loss position for which an allowance for credit losses has not been recorded	320
Unrealized loss | $	$ 15,038	$ 2,554
Unrealized losses as percentage of fixed income portfolio cost basis	0.70%
Unrealized losses relative to total invested assets (as a percent)	0.50%
Number of unrealized loss positions	320
Number of securities in unrealized loss positions for 12 months or longer	32

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Investments - Amortized Cost and Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	$ 2,096,852	$ 2,061,467
Allowance for Credit Losses	(375)	(397)	$ (878)	$ 0
Gross Unrealized Gains	94,430	138,110
Gross Unrealized Losses	(15,038)	(2,554)
Fair Value	2,175,869	2,196,626
U.S. government
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	161,956	170,110
Gross Unrealized Gains	9,539	13,504
Gross Unrealized Losses	(1,073)	(257)
Fair Value	170,422	183,357
U.S. Agency
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	28,883	28,902
Gross Unrealized Gains	2,783	3,970
Fair Value	31,666	32,872
Non-U.S. government & agency
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	8,296	10,298
Gross Unrealized Gains	407	667
Gross Unrealized Losses	(148)
Fair Value	8,555	10,965
Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	358,224	384,015
Gross Unrealized Gains	14,007	18,789
Gross Unrealized Losses	(3,019)	(733)
Fair Value	369,212	402,071
ABS/CMBS/MBS
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	215,177	213,223
Allowance for Credit Losses		(17)
Gross Unrealized Gains	3,713	5,580
Gross Unrealized Losses	(658)	(413)
Fair Value	218,232	218,373
Corporate Debt
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	796,042	753,404
Allowance for Credit Losses	(375)	(380)
Gross Unrealized Gains	42,200	64,501
Gross Unrealized Losses	(4,664)	(933)
Fair Value	833,203	816,592
Municipal
Schedule Of Available For Sale Securities [Line Items]
Total available-for-sale	528,274	501,515
Gross Unrealized Gains	21,781	31,099
Gross Unrealized Losses	(5,476)	(218)
Fair Value	$ 544,579	$ 532,396

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Investments - Schedule of Debt Securities Available-for-sale Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investment Holdings [Line Items]
Beginning balance	$ 397	$ 0
Increase to allowance from securities for which credit losses were not previously recorded		624
Net increase (decrease) from securities that had an allowance at the beginning of the period	(22)	226
Balance as of March 31,	$ 375	878
ASU 2016-13
Investment Holdings [Line Items]
Beginning balance		$ 28

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Investments - Schedule of Securities in an Unrealized Loss Position Segregated by Type and Length of Time in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
U.S. government
Fair Value
Less than 12 months	$ 4,864	$ 5,680
Total Fair Value	4,864	5,680
Amortized Cost
Amortized cost, less than 12 months	5,937	5,937
Total Cost or Amortized Cost	5,937	5,937
Unrealized Loss
Less than 12 months	(1,073)	(257)
Total Unrealized Loss	(1,073)	(257)
Non-U.S. government & agency
Fair Value
Less than 12 months	2,852
Total Fair Value	2,852
Amortized Cost
Amortized cost, less than 12 months	3,000
Total Cost or Amortized Cost	3,000
Unrealized Loss
Less than 12 months	(148)
Total Unrealized Loss	(148)
Agency MBS
Fair Value
Less than 12 months	92,446	43,999
Total Fair Value	92,446	43,999
Amortized Cost
Amortized cost, less than 12 months	95,465	44,732
Total Cost or Amortized Cost	95,465	44,732
Unrealized Loss
Less than 12 months	(3,019)	(733)
Total Unrealized Loss	(3,019)	(733)
ABS/CMBS/MBS
Fair Value
Less than 12 months	55,703	32,771
12 months and greater	7,235	16,161
Total Fair Value	62,938	48,932
Amortized Cost
Amortized cost, less than 12 months	56,341	33,094
12 months and greater	7,255	16,251
Total Cost or Amortized Cost	63,596	49,345
Unrealized Loss
Less than 12 months	(638)	(323)
12 months and greater	(20)	(90)
Total Unrealized Loss	(658)	(413)
Corporate Debt
Fair Value
Less than 12 months	165,717	52,655
12 months and greater	14,193	6,235
Total Fair Value	179,910	58,890
Amortized Cost
Amortized cost, less than 12 months	170,204	53,440
12 months and greater	14,370	6,383
Total Cost or Amortized Cost	184,574	59,823
Unrealized Loss
Less than 12 months	(4,487)	(785)
12 months and greater	(177)	(148)
Total Unrealized Loss	(4,664)	(933)
Municipal
Fair Value
Less than 12 months	115,596	25,676
Total Fair Value	115,596	25,676
Amortized Cost
Amortized cost, less than 12 months	121,072	25,894
Total Cost or Amortized Cost	121,072	25,894
Unrealized Loss
Less than 12 months	(5,476)	(218)
Total Unrealized Loss	(5,476)	(218)
Debt Securities
Fair Value
Less than 12 months	437,178	160,781
12 months and greater	21,428	22,396
Total Fair Value	458,606	183,177
Amortized Cost
Amortized cost, less than 12 months	452,019	163,097
12 months and greater	21,625	22,634
Total Cost or Amortized Cost	473,644	185,731
Unrealized Loss
Less than 12 months	(14,841)	(2,316)
12 months and greater	(197)	(238)
Total Unrealized Loss	$ (15,038)	$ (2,554)

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Investments - Unrealized Losses (Details) - Debt Securities - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Cost or amortized Cost
Total Cost or Amortized Cost	$ 473,644	$ 185,731
Fair value
Total Fair Value	458,606	183,177
Unrealized Loss
Total Unrealized Loss	$ (15,038)	$ (2,554)
Percent to Total	100.00%
NAIC Rating 1 | AAA/AA/A | Aaa/Aa/A
Cost or amortized Cost
Total Cost or Amortized Cost	$ 365,229
Fair value
Total Fair Value	352,591
Unrealized Loss
Total Unrealized Loss	$ (12,638)
Percent to Total	84.10%
NAIC Rating 2 | BBB | Baa
Cost or amortized Cost
Total Cost or Amortized Cost	$ 55,575
Fair value
Total Fair Value	54,161
Unrealized Loss
Total Unrealized Loss	$ (1,414)
Percent to Total	9.40%
NAIC Rating 3 | BB | Ba
Cost or amortized Cost
Total Cost or Amortized Cost	$ 23,838
Fair value
Total Fair Value	23,455
Unrealized Loss
Total Unrealized Loss	$ (383)
Percent to Total	2.50%
NAIC Rating 4 | B | B
Cost or amortized Cost
Total Cost or Amortized Cost	$ 26,201
Fair value
Total Fair Value	25,616
Unrealized Loss
Total Unrealized Loss	$ (585)
Percent to Total	3.90%
NAIC Rating 5 | CCC | Caa
Cost or amortized Cost
Total Cost or Amortized Cost	$ 2,801
Fair value
Total Fair Value	2,783
Unrealized Loss
Total Unrealized Loss	$ (18)
Percent to Total	0.10%
NAIC Six Rating Member | Standard Poors CC Or Lower Member | Ca
Unrealized Loss
Percent to Total	0.00%

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Investments - Allowance for Credit Losses, Unrealized Losses on Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Securities
Investment Holdings [Line Items]
Unrealized gains (losses) on equity securities still held	$ 41.2	$ 115.2

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Investments - Debt and Short-term Investments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Investment Holdings [Line Items]
Other investments	$ 50,413,000		$ 54,232,000
Investment in federal home loan bank stock	us-gaap:AssetPledgedAsCollateralMember		us-gaap:AssetPledgedAsCollateralMember
Cash and Short-term Investments
Cash	$ 94,935,000		$ 62,217,000
FHLBC
Investment Holdings [Line Items]
Investments pledged as collateral	10,200,000
Federal home loan bank borrowings fair value disclosure	0
Investment In Low Income Housing Tax Credit Partnership Net Of Amortization
Investment Holdings [Line Items]
Other investments	19,400,000		20,300,000
Total tax benefit on investments in housing tax credit partnership	900,000	$ 900,000
Qualified affordable housing project investments, commitment	2,700,000
Investment in Private Funds
Investment Holdings [Line Items]
Other investments	27,800,000		$ 32,100,000
Fair value investments entities that calculate net asset value per share unfunded commitments	$ 6,500,000

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Historical Loss and LAE Development - Schedule of Reconciliation of Unpaid Losses and Settlement Expenses (LAE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Unpaid losses and LAE at beginning of year
Gross	$ 1,750,049	$ 1,574,352
Ceded	(443,729)	(384,517)
Net	1,306,320	1,189,835
Increase (decrease) in incurred losses and LAE
Current accident year	142,013	126,194
Prior accident years	(37,121)	(15,173)
Total incurred	104,892	111,021
Loss and LAE payments for claims incurred
Current accident year	(5,962)	(9,295)
Prior accident years	(64,896)	(81,897)
Total paid	(70,858)	(91,192)
Net unpaid losses and LAE at March 31	1,340,354	1,208,319
Unpaid losses and LAE at March 31
Gross	1,795,275	1,574,760
Ceded	(454,921)	(366,441)
Net unpaid losses and LAE at March 31	$ 1,340,354	1,208,319
ASU 2016-13 | Cumulative Effect, Period of Adoption, Adjustment
Unpaid losses and LAE at beginning of year
Ceded		$ (1,345)

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Historical Loss and LAE Development - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
(Favorable)/Unfavorable Reserve Development
Unpaid losses and LAE, Ceded	$ 454,921	$ 366,441	$ 443,729	$ 384,517
Favorable development on prior years' loss reserves	$ 37,121	$ 15,173
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment
(Favorable)/Unfavorable Reserve Development
Unpaid losses and LAE, Ceded				$ 1,345

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Income Taxes - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate reconciliation, percent, total	18.70%	22.80%
U.S. federal tax rate	21.00%	21.00%

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Income Taxes - Schedule of Reconciliation of Income Tax Expense Attributable to Income from Operations with Amounts Computed by Applying U.S. Federal Tax Rate to Pretax Income from Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Reconciliation of income tax expense reported to amount computed by applying the U.S. federal tax rate
Provision for income taxes at the statutory rate	$ 18,865	$ (16,666)
Increase (reduction) in taxes resulting from:
Excess tax benefit on share-based compensation	(1,924)	(1,029)
Tax exempt interest income	(319)	(313)
Dividends received deduction	(236)	(271)
Investment tax credit	(801)	(1,321)
ESOP dividends paid deduction	(130)	(132)
Nondeductible expenses	411	203
Other items, net	956	1,432
Total tax expense (benefit)	$ 16,822	$ (18,097)
Reconciliation of income tax expense rate to the U.S. federal tax rate
Tax rate used (as a percent)	21.00%	21.00%
Excess tax benefit on share-based compensation (as a percent)	(2.10%)	1.30%
Effective rate reduction due to tax exempt interest income (as a percent)	(0.40%)	0.40%
Effective rate reduction due to dividend received (as a percent)	(0.30%)	0.30%
Effective rate reduction due to investment tax credit (as a percent)	(0.90%)	1.70%
Effective rate reduction due to dividend paid to ESOP (as a percent)	(0.10%)	0.20%
Effective rate reduction due to nondeductible expenses (as a percent)	0.50%	(0.30%)
Effective rate reduction due to other items, net (as a percent)	1.00%	(1.80%)
Total tax expense (benefit)	18.70%	22.80%

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Stock Based Compensation - Stock Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		60 Months Ended	71 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	May 06, 2015	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted (in shares)	44,496
Aggregate Intrinsic Value, Options exercised	$ 6.9	$ 2.5
RLI Corp. Long-Term Incentive Plan (2010 LTIP)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant			4,000,000
Options granted (in shares)			2,878,000
RLI Corp. Long-Term Incentive Plan (2015 LTIP)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant	4,000,000			4,000,000
Options granted (in shares)	44,496			2,667,865
Stock-based compensation expenses	$ 1.6	1.3
Income tax benefit from stock-based compensation	0.3	$ 0.2
Unrecognized stock-based compensation expense	$ 5.4			$ 5.4
Stock-based compensation expenses, recognition period	2 years 6 months 21 days
RLI Corp. Long-Term Incentive Plan (LTIP 2010 and LTIP 2015) | Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	5 years
Term of options	8 years
Age and period of service of the participant to be eligible for retirement	75 years

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Stock Based Compensation - Summary of Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2020 USD ($)
Weighted Number of Options Outstanding
Outstanding options, Beginning Balance | shares	1,632,334
Options granted (in shares) | shares	44,496
Options exercised | shares	(121,645)
Options canceled/forfeited | shares	(600)
Outstanding options, Ending Balance | shares	1,554,585
Exercisable options, Ending Balance | shares	563,215
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding options, Beginning Balance | $ / shares	$ 70.67
Weighted Average Exercise Price, Options granted | $ / shares	97.64
Weighted Average Exercise Price, Options exercised | $ / shares	56.04
Weighted Average Exercise Price, Options canceled/forfeited | $ / shares	93.24
Weighted Average Exercise Price, Outstanding options, Ending Balance | $ / shares	72.57
Weighted Average Exercise Price, Exercisable options | $ / shares	$ 61.80
Weighted Average Remaining Contractual Life
Weighted Average Remaining Contractual Life, Outstanding options	5 years 2 months 1 day
Weighted Average Remaining Contractual Life, Exercisable options	3 years 9 months
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Options exercised | $	$ 6,900	$ 2,500
Aggregate Intrinsic Value, Outstanding options | $	60,622
Aggregate Intrinsic Value, Exercisable options | $	$ 28,029

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Stock Based Compensation - Summary of Weighted Average Grant-date Assumptions and Weighted Average Fair Values (Details) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Weighted average grant date assumptions and weighted average fair value
Weighted-average fair value of grants	$ 13.82	$ 14.48
Risk-free interest rates	0.27%	1.54%
Dividend yield	2.30%	2.69%
Expected volatility	22.67%	22.68%
Expected option life	4 years 11 months 15 days	4 years 11 months 26 days

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Stock Based Compensation - Restricted Stock Units - Additional Information (Details) - Restricted Stock Units (RSUs)	3 Months Ended
	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Age and period of service of the participant to be eligible for retirement	75 years
Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	3 years
Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period	1 year

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Stock Based Compensation - Schedule of Restricted Stock Units Activity (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of RSUs
RSUs Nonvested, Beginning Balance | shares	47,658
RSUs Reinvested | shares	102
RSUs Forfeited | shares	(51)
RSUs Nonvested, Ending Balance | shares	47,709
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Nonvested, Beginning Balance | $ / shares	$ 81.53
Weighted Average Grant Date Fair Value, Reinvested | $ / shares	112.16
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	93.42
Weighted Average Grant Date Fair Value, Nonvested, Ending Balance | $ / shares	$ 81.58

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Operating Segment Information - Summary of Selected Information by Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Net premiums earned	$ 228,595	$ 215,582
Net investment income	16,424	17,778
Net realized gains	14,150	15,152
Net unrealized gains (losses) on equity securities	28,162	(130,395)
Consolidated revenue	287,331	118,117
Net Earnings
Net underwriting income	29,917	17,239
Net investment income	16,424	17,778
Net realized gains	14,150	15,152
Net unrealized gains (losses) on equity securities	28,162	(130,395)
General corporate expense and interest on debt	(5,243)	(3,652)
Equity in earnings of unconsolidated investees	6,424	4,514
Earnings (loss) before income taxes	89,834	(79,364)
Income tax expense (benefit)	16,822	(18,097)
Net earnings (loss)	73,012	(61,267)
Casualty Segment
Revenues
Net premiums earned	148,770	143,420
Net Earnings
Net underwriting income	24,867	(1,323)
Property Segment
Revenues
Net premiums earned	51,642	44,348
Net Earnings
Net underwriting income	(1,005)	9,908
Surety Segment
Revenues
Net premiums earned	28,183	27,814
Net Earnings
Net underwriting income	$ 6,055	$ 8,654

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Operating Segment Information - Summary of Revenue by Major Product Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Net premiums earned	$ 228,595	$ 215,582
Casualty Segment
Segment Reporting Information [Line Items]
Net premiums earned	148,770	143,420
Casualty Segment | Commercial excess and personal umbrella
Segment Reporting Information [Line Items]
Net premiums earned	51,554	40,088
Casualty Segment | General liability
Segment Reporting Information [Line Items]
Net premiums earned	22,407	23,998
Casualty Segment | Professional services
Segment Reporting Information [Line Items]
Net premiums earned	21,728	20,695
Casualty Segment | Commercial transportation
Segment Reporting Information [Line Items]
Net premiums earned	16,830	21,185
Casualty Segment | Small commercial
Segment Reporting Information [Line Items]
Net premiums earned	15,722	15,633
Casualty Segment | Executive products
Segment Reporting Information [Line Items]
Net premiums earned	5,241	7,331
Casualty Segment | Other casualty
Segment Reporting Information [Line Items]
Net premiums earned	15,288	14,490
Property Segment
Segment Reporting Information [Line Items]
Net premiums earned	51,642	44,348
Property Segment | Marine
Segment Reporting Information [Line Items]
Net premiums earned	22,958	19,577
Property Segment | Commercial property
Segment Reporting Information [Line Items]
Net premiums earned	22,712	19,155
Property Segment | Specialty personal
Segment Reporting Information [Line Items]
Net premiums earned	5,034	5,000
Property Segment | Other property
Segment Reporting Information [Line Items]
Net premiums earned	938	616
Surety Segment
Segment Reporting Information [Line Items]
Net premiums earned	28,183	27,814
Surety Segment | Commercial
Segment Reporting Information [Line Items]
Net premiums earned	11,013	10,938
Surety Segment | Miscellaneous
Segment Reporting Information [Line Items]
Net premiums earned	10,635	10,516
Surety Segment | Contract
Segment Reporting Information [Line Items]
Net premiums earned	$ 6,535	$ 6,360

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Leases - Schedule of Components of Lease Expense and Other lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Operating lease cost	$ 1,351	$ 1,406
Variable lease cost	384	355
Sublease income	(123)
Total lease cost	1,612	1,761
Cash paid for amounts included in measurement of lease liabilities
Operating cash outflows from operating leases	1,488	1,486
ROU assets obtained in exchange for new operating lease liabilities	58	15
Reduction to ROU assets resulting from reduction to lease liabilities	59
Other non-cash reductions to ROU assets		$ 1,192
Operating lease ROU assets	$ 14,952		$ 16,200
Operating Lease, Right-of-Use Asset, Statement of Financial Position	Other assets		Other assets
Operating lease liabilities	$ 17,676		$ 19,072
Operating Lease, Liability, Statement of Financial Position	Other liabilities		Other liabilities
Weighted-average remaining lease term - operating leases	3 years 8 months 4 days		3 years 10 months 13 days
Weighted-average discount rate - operating leases	2.33%		2.32%

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Leases - Schedule of Future Minimum Lease Payments under Non-cancellable Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Future minimum lease payments under non-cancellable leases
2021	$ 4,466
2022	5,941
2023	4,424
2024	2,334
2025	802
2026	242
Thereafter	321
Total future minimum lease payments	18,530
Less imputed interest	(854)
Operating lease liabilities	$ 17,676	$ 19,072