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Investments in Securities and Fair Value | 12 Months Ended
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Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract] |
Investments In Securities and Fair Value | Investments and Estimated Fair Value The aggregate estimated fair value, gross unrealized holding gains, gross unrealized holding losses, and cost or amortized cost for securities by major security type at December 31 were as follows:
December 31, 2017 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Fixed maturities, available-for-sale, at fair value: |  |  |  |  |  |  |
Government obligations | $ | 1,042,921 |  |  | $ | — |  |  | $ | 951 |  |  | $ | 1,041,970 |
General obligations of U.S. states, territories and political subdivisions | 24,189,032 |  |  | 505,513 |  |  | 50,224 |  |  | 24,644,321 |
Special revenue issuer obligations of U.S. states, territories and political subdivisions | 62,591,978 |  |  | 2,217,665 |  |  | 164,355 |  |  | 64,645,288 |
Corporate debt securities | 12,490,154 |  |  | 528,218 |  |  | 8,868 |  |  | 13,009,504 |
Total | $ | 100,314,085 |  |  | $ | 3,251,396 |  |  | $ | 224,398 |  |  | $ | 103,341,083 |
Equity securities, available-for-sale, at fair value: |  |  |  |  |  |  |  |  |  |  |
Common stocks | $ | 26,002,619 |  |  | $ | 21,376,110 |  |  | $ | 11,903 |  |  | $ | 47,366,826 |
Total | $ | 26,002,619 |  |  | $ | 21,376,110 |  |  | $ | 11,903 |  |  | $ | 47,366,826 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |
Commercial paper, money market funds and certificates of deposit | $ | 23,779,672 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,779,672 |
Total | $ | 23,779,672 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,779,672 |
December 31, 2016 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Fixed maturities, available-for-sale, at fair value: |  |  |  |  |  |  |
General obligations of U.S. states, territories and political subdivisions | $ | 29,374,774 |  |  | $ | 440,628 |  |  | $ | 298,533 |  |  | $ | 29,516,869 |
Special revenue issuer obligations of U.S. states, territories and political subdivisions | 57,459,818 |  |  | 1,619,444 |  |  | 502,135 |  |  | 58,577,127 |
Corporate debt securities | 13,327,765 |  |  | 512,316 |  |  | — |  |  | 13,840,081 |
Total | $ | 100,162,357 |  |  | $ | 2,572,388 |  |  | $ | 800,668 |  |  | $ | 101,934,077 |
Equity securities, available-for sale, at fair value: |  |  |  |  |  |  |
Common stocks | $ | 24,836,032 |  |  | $ | 16,392,210 |  |  | $ | 48,983 |  |  | $ | 41,179,259 |
Total | $ | 24,836,032 |  |  | $ | 16,392,210 |  |  | $ | 48,983 |  |  | $ | 41,179,259 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |
Money market funds and certificates of deposit | $ | 6,558,840 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,558,840 |
Total | $ | 6,558,840 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,558,840 |
The special revenue category for both periods presented includes approximately 60 individual bonds with revenue sources from a variety of industry sectors. The scheduled maturities of fixed maturity securities at December 31, 2017 were as follows:
| Available-for-Sale
| Amortized Cost |  | Fair Value
Due in one year or less | $ | 11,570,232 |  |  | $ | 11,637,351 |
Due after one year through five years | 38,510,415 |  |  | 39,352,750 |
Due five years through ten years | 48,246,123 |  |  | 49,802,410 |
Due after ten years | 1,987,315 |  |  | 2,548,572 |
Total | $ | 100,314,085 |  |  | $ | 103,341,083 |
Earnings on investments for the years ended December 31 were as follows:
| 2017 |  | 2016 |  | 2015
Fixed maturities | $ | 3,037,105 |  |  | $ | 3,506,484 |  |  | $ | 3,439,296 |
Equity securities | 1,202,912 |  |  | 1,157,550 |  |  | 1,086,365 |
Invested cash and other short-term investments | 201,780 |  |  | 19,982 |  |  | 5,605 |
Miscellaneous interest | 2,650 |  |  | 473 |  |  | 53 |
Investment income | $ | 4,444,447 |  |  | $ | 4,684,489 |  |  | $ | 4,531,319 |
Gross realized gains and losses on sales of investments for the years ended December 31 are summarized as follows:
| 2017 |  | 2016 |  | 2015
Gross realized gains: |  |  |  |  |
Special revenue issuer obligations of U.S. states, territories and political subdivisions | $ | 139 |  |  | $ | 161 |  |  | $ | — |
Corporate debt securities | — |  |  | 119,001 |  |  | 5,417 |
Common stocks and nonredeemable preferred stocks | 1,487,420 |  |  | 953,491 |  |  | 1,572,636 |
Auction rate securities | — |  |  | 74,996 |  |  | — |
Total | 1,487,559 |  |  | 1,147,649 |  |  | 1,578,053 |
Gross realized losses: |  |  |  |  |
General obligations of U.S. states, territories and political subdivisions | — |  |  | (535 | ) |  | (12,319 | )
Special revenue issuer obligations of U.S. states, territories and political subdivisions | (100 | ) |  | (1,085 | ) |  | (397 | )
Common stocks | (260,194 | ) |  | (173,357 | ) |  | (846,500 | )
Other than temporary impairment of securities | (25,411 | ) |  | (233,941 | ) |  | (751,059 | )
Total | (285,705 | ) |  | (408,918 | ) |  | (1,610,275 | )
Net realized gain (loss) | $ | 1,201,854 |  |  | $ | 738,731 |  |  | $ | (32,222 | )
Net realized (loss) gain on other investments: |  |  |  |  |
Impairments of other assets and investments | $ | (182,667 | ) |  | $ | — |  |  | $ | (233,069 | )
Net gain on other assets and investments | 21,714 |  |  | 29,705 |  |  | 149,128 |
Total | $ | (160,953 | ) |  | $ | 29,705 |  |  | $ | (83,941 | )
Net realized gain (loss) on investments | $ | 1,040,901 |  |  | $ | 768,436 |  |  | $ | (116,163 | )
Realized gains and losses are determined on the specific identification method. The following table presents the gross unrealized losses on investment securities and the estimated fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous loss position at December 31, 2017 and 2016:
| Less than 12 Months |  | 12 Months or Longer |  | Total
December 31, 2017 | Estimated Fair Value |  | Unrealized Loss |  | Estimated Fair Value |  | Unrealized Loss |  | Estimated Fair Value |  | Unrealized Loss
Government obligations | $ | 1,041,970 |  |  | $ | (951 | ) |  | $ | — |  |  | $ | — |  |  | $ | 1,041,970 |  |  | $ | (951 | )
General obligations of U.S. states, territories and political subdivisions | 4,560,021 |  |  | (26,823 | ) |  | 3,535,040 |  |  | (23,401 | ) |  | 8,095,061 |  |  | (50,224 | )
Special revenue issuer obligations of U.S. states, territories and political subdivisions | 13,550,979 |  |  | (61,127 | ) |  | 4,022,310 |  |  | (103,228 | ) |  | 17,573,289 |  |  | (164,355 | )
Corporate debt securities | 3,744,195 |  |  | (8,868 | ) |  | — |  |  | — |  |  | 3,744,195 |  |  | (8,868 | )
Total fixed maturity securities | $ | 22,897,165 |  |  | $ | (97,769 | ) |  | $ | 7,557,350 |  |  | $ | (126,629 | ) |  | $ | 30,454,515 |  |  | $ | (224,398 | )
Equity securities | 61,187 |  |  | (11,903 | ) |  | — |  |  | — |  |  | 61,187 |  |  | (11,903 | )
Total temporarily impaired securities | $ | 22,958,352 |  |  | $ | (109,672 | ) |  | $ | 7,557,350 |  |  | $ | (126,629 | ) |  | $ | 30,515,702 |  |  | $ | (236,301 | )
December 31, 2016 |  |  |  |  |  |  |  |  |  |  |
General obligations of U.S. states, territories and political subdivisions | $ | 13,884,808 |  |  | $ | (298,533 | ) |  | $ | — |  |  | $ | — |  |  | $ | 13,884,808 |  |  | $ | (298,533 | )
Special revenue issuer obligations of U.S. states, territories and political subdivisions | 16,161,906 |  |  | (502,135 | ) |  | — |  |  | — |  |  | 16,161,906 |  |  | (502,135 | )
Total fixed maturity securities | $ | 30,046,714 |  |  | $ | (800,668 | ) |  | $ | — |  |  | $ | — |  |  | $ | 30,046,714 |  |  | $ | (800,668 | )
Equity securities | 380,400 |  |  | (48,983 | ) |  | — |  |  | — |  |  | 380,400 |  |  | (48,983 | )
Total temporarily impaired securities | $ | 30,427,114 |  |  | $ | (849,651 | ) |  | $ | — |  |  | $ | — |  |  | $ | 30,427,114 |  |  | $ | (849,651 | )
The decline in estimated fair value of the fixed maturity securities can be attributed primarily to changes in market interest rates and changes in credit spreads over Treasury securities. Because the Company does not have the intent to sell these securities and will likely not be compelled to sell them before it can recover its cost basis, the Company does not consider these investments to be other-than-temporarily impaired. The unrealized losses related to holdings of equity securities were caused by market changes that the Company considers to be temporary. Since the Company has the intent and ability to hold these equity securities until a recovery of fair value, the Company does not consider these investments other-than-temporarily impaired. Factors considered in determining whether a loss is temporary include the length of time and extent to which fair value has been below cost, the financial condition and prospects of the issuer (including credit ratings and analyst reports) and macro-economic changes. A total of 32 and 36 securities had unrealized losses at December 31, 2017 and December 31, 2016, respectively. Reviews of the values of securities are inherently uncertain and the value of the investment may not fully recover, or may decline in future periods resulting in a realized loss. During 2017, the Company recorded other-than-temporary impairment charges in the amount of $25,411 related to securities. During 2016, the Company recorded other-than-temporary impairment charges in the amount of $233,941 related to securities. During 2015, the Company recorded other-than-temporary impairment charges in the amount of $751,059 related to securities. Other-than-temporary impairment charges are included in net realized gain (loss) on investments in the Consolidated Statements of Income. Variable Interest Entities The Company holds investments in variable interest entities (“VIEs”) that are not consolidated in the Company's financial statements as the Company is not the primary beneficiary. These entities are considered VIEs as the equity investors at risk, including the Company, do not have the power over the activities that most significantly impact the economic performance of the entities; this power resides with a third-party general partner or managing member that cannot be removed except for cause. The following table sets forth details about the Company's variable interest investments in VIEs, which are structured either as limited partnerships ("LPs") or limited liability companies ("LLCs"), as of December 31, 2017:
Type of Investment |  | Balance Sheet Classification |  | Carrying Value |  | Estimated Fair Value |  | Maximum Potential Loss (a)
Tax credit LPs |  | Other investments |  | $ | 905,179 |  |  | $ | 905,179 |  |  | $ | 1,325,000 |
Real estate LLCs or LPs |  | Other investments |  | 5,355,874 |  |  | 5,849,112 |  |  | 7,700,000 |
Small business investment LPs |  | Other investments |  | 3,750,677 |  |  | 3,806,600 |  |  | 9,400,000 |
Total |  |  |  | $ | 10,011,730 |  |  | $ | 10,560,891 |  |  | $ | 18,425,000 |
(a) |  | Maximum potential loss is calculated as the total investment in the LLC or LP including any capital commitments that may have not yet been called. The Company is not exposed to any loss beyond the total commitment of its investment.
Valuation of Financial Assets and Liabilities The FASB has established a valuation hierarchy for disclosure of the inputs used to estimated measure fair value of financial assets and liabilities, such as securities. This hierarchy categorizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. A financial instrument’s classification within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement—consequently, if there are multiple significant valuation inputs that are categorized in different levels of the hierarchy, the instrument’s hierarchy level is the lowest level (with Level 3 being the lowest level) within which any significant input falls. Debt and Equity Securities The Level 1 category includes equity securities that are measured at estimated fair value using quoted active market prices. The Level 2 category includes fixed maturity investments such as corporate bonds, U.S. government and agency bonds and municipal bonds. Estimated fair value is principally based on market values obtained from a third party pricing service. Factors that are used in determining estimated fair market value include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data. The Company receives one quote per security from a third party pricing service, although as discussed below, the Company does consult other pricing resources when confirming that the prices it obtains reflect the estimated fair values of the instruments in accordance with ASC 820, Fair Value Measurements and Disclosures. Generally, quotes obtained from the pricing service for instruments classified as Level 2 are not adjusted and are not binding. As of December 31, 2017 and December 31, 2016, the Company did not adjust any Level 2 fair values. A number of the Company’s investment grade corporate bonds are frequently traded in active markets, and trading prices are consequently available for these securities. However, these securities are classified as Level 2 because the pricing service from which the Company has obtained estimated fair values for these instruments uses valuation models that use observable market inputs in addition to trading prices. Substantially all of the input assumptions used in the service’s model are observable in the marketplace or can be derived or supported by observable market data. The Company did not carry any Level 3 category debt or equity investment securities as of December 31, 2017 and 2016. The following table presents, by level, the financial assets carried at estimated fair value measured on a recurring basis as of December 31, 2017 and 2016. The table does not include cash on hand and also does not include assets that are measured at historical cost or any basis other than fair value.
As of December 31, 2017 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Short-term investments | $ | 23,779,672 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,779,672 |
Equity securities: |  |  |  |  |  |  |
Common stocks | 47,366,826 |  |  | — |  |  | — |  |  | 47,366,826 |
Fixed maturities: |  |  |  |  |  |  |
Obligations of U.S. states, territories and political subdivisions* | — |  |  | 90,331,579 |  |  | — |  |  | 90,331,579 |
Corporate debt securities* | — |  |  | 13,009,504 |  |  | — |  |  | 13,009,504 |
Total | $ | 71,146,498 |  |  | $ | 103,341,083 |  |  | $ | — |  |  | $ | 174,487,581 |
As of December 31, 2016 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Short-term investments | $ | 6,558,840 |  |  | $ | — |  |  | $ | — |  |  | $ | 6,558,840 |
Equity securities: |  |  |  |  |  |  |
Common stocks | 41,179,259 |  |  | — |  |  | — |  |  | 41,179,259 |
Fixed maturities: |  |  |  |  |  |  |
Obligations of U.S. states, territories and political subdivisions* | — |  |  | 88,093,996 |  |  | — |  |  | 88,093,996 |
Corporate debt securities* | — |  |  | 13,840,081 |  |  | — |  |  | 13,840,081 |
Total | $ | 47,738,099 |  |  | $ | 101,934,077 |  |  | $ | — |  |  | $ | 149,672,176 |
*Denotes fair market value obtained from pricing services. There were no transfers into or out of Levels 1 and 2 during the period. To help ensure that estimated fair value determinations are consistent with ASC 820, prices from our pricing services go through multiple review processes to ensure appropriate pricing. Pricing procedures and inputs used to price each security include, but are not limited to, the following: unadjusted quoted market prices for identical securities such as stock market closing prices; non-binding quoted prices for identical securities in markets that are not active; interest rates; yield curves observable at commonly quoted intervals; volatility; prepayment speeds; loss severity; credit risks and default rates. The Company reviews the procedures and inputs used by its pricing services, and verifies a sample of the services’ quotes by comparing them to values obtained from other pricing resources. In the event the Company disagrees with a price provided by its pricing services, the respective service reevaluates the price to corroborate the market information and then reviews inputs to the evaluation in light of potentially new market data. The Company believes that these processes and inputs result in appropriate classifications and estimated fair values consistent with ASC 820. Other Financial Instruments The Company uses various financial instruments in the normal course of its business. In the measurement of the estimated fair value of certain financial instruments, other valuation techniques were utilized if quoted market prices were not available. These derived fair value estimates are significantly affected by the assumptions used. Additionally, ASC 820 excludes from its scope certain financial instruments including those related to insurance contracts, pension and other postretirement benefits, and equity method investments. In estimating the fair value of the financial instruments presented, the Company used the following methods and assumptions: Cash and cash equivalents The carrying amount for cash and cash equivalents is a reasonable estimate of fair value due to the short-term maturity of these investments. Cost-basis investments The estimated fair value of cost-basis investments is calculated from the book value of the underlying entities, which is not materially different from the fair value of the underlying entity. These items are included in other investments in the Consolidated Balance Sheets. Accrued interest and dividends The carrying amount for accrued interest and dividends is a reasonable estimate of fair value due to the short-term maturity of these assets. The carrying amounts and estimated fair values of other financial instruments (see previous table for investments carried at estimated fair value) as of December 31, 2017 and 2016 are presented in the following table:
As of December 31, 2017 |  |  |  |  |  |  |  |  |
Financial Assets | Carrying Value |  | Estimated Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Cash and cash equivalents | $ | 20,214,468 |  |  | $ | 20,214,468 |  |  | $ | 20,214,468 |  |  | $ | — |  |  | $ | — |
Cost-basis investments | 5,438,745 |  |  | 5,710,184 |  |  | — |  |  | — |  |  | 5,710,184 |
Accrued interest and dividends | 1,099,879 |  |  | 1,099,879 |  |  | 1,099,879 |  |  | — |  |  | — |
Total | $ | 26,753,092 |  |  | $ | 27,024,531 |  |  | $ | 21,314,347 |  |  | $ | — |  |  | $ | 5,710,184 |
As of December 31, 2016 |  |  |  |  |  |  |  |  |
Financial Assets | Carrying Value |  | Estimated Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Cash and cash equivalents | $ | 27,928,472 |  |  | $ | 27,928,472 |  |  | $ | 27,928,472 |  |  | $ | — |  |  | $ | — |
Cost-basis investments | 4,244,402 |  |  | 4,497,665 |  |  | — |  |  | — |  |  | 4,497,665 |
Accrued interest and dividends | 1,035,152 |  |  | 1,035,152 |  |  | 1,035,152 |  |  | — |  |  | — |
Total | $ | 33,208,026 |  |  | $ | 33,461,289 |  |  | $ | 28,963,624 |  |  | $ | — |  |  | $ | 4,497,665 |

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