INVESTMENTS | 4. INVESTMENTS Unrealized Gains and Losses The difference between amortized cost or cost and estimated fair value and gross unrealized gains and losses, by major investment category, consisted of the following: Amortized Gross Gross Cost Unrealized Unrealized or Cost Gains Losses Fair Value (In thousands) March 31, 2018 Debt securities - available-for-sale: United States government obligations and authorities $ 131,292 $ 231 $ 1,813 $ 129,710 Obligations of states and political subdivisions 23,535 54 287 23,302 Corporate 261,772 553 3,807 258,518 International 18,068 11 152 17,927 434,667 849 6,059 429,457 Debt securities - held-to-maturity: United States government obligations and authorities 4,161 3 139 4,025 Corporate 1,072 6 4 1,074 International 65 — — 65 5,298 9 143 5,164 Total investments (1) $ 439,965 $ 858 $ 6,202 $ 434,621 (1) As a result of the adoption of ASU 2016-01 on January 1, 2018 (see additional details in Note 2) our equity securities no longer have unrealized gains or losses, therefore they are not included as of March 31, 2018. Amortized Gross Gross Cost Unrealized Unrealized or Cost Gains Losses Fair Value (In thousands) December 31, 2017 Debt securities - available-for-sale: United States government obligations and authorities $ 98,739 $ 244 $ 846 $ 98,137 Obligations of states and political subdivisions 66,319 325 378 66,266 Corporate 239,435 2,233 749 240,919 International 17,807 136 27 17,916 422,300 2,938 2,000 423,238 Debt securities - held-to-maturity: United States government obligations and authorities 4,160 9 106 4,063 Corporate 1,123 21 — 1,144 International 66 1 — 67 5,349 31 106 5,274 Equity securities 14,085 1,628 279 15,434 Total investments $ 441,734 $ 4,597 $ 2,385 $ 443,946 Net Realized and Unrealized Gains and Losses The Company calculates the gain or loss realized on the sale of investments by comparing the sales price (fair value) to the cost or amortized cost of the security sold. Net realized gains and losses on investments are determined in accordance with the specific identification method. Net realized and unrealized gains, by major investment category, consisted of the following: Three Months Ended March 31, 2018 2017 (In thousands) Gross realized and unrealized gains: Debt securities $ 223 $ 570 Equity securities 1,153 560 Total gross realized and unrealized gains 1,376 1,130 Gross realized and unrealized losses: Debt securities (1,441 ) (1,092 ) Equity securities (987 ) (143 ) Total gross realized and unrealized losses (2,428 ) (1,235 ) Net realized and unrealized gains on investments $ (1,052 ) $ (105 ) Proceeds from sale of investment securities were $78.1 million an d $128.6 million for the three months ended March 31, 2018 and 2017 , respectively. The portion of unrealized gains and losses for equity securities that was recognized in the line item, net realized and unrealized gains on investments securities for the three months ended March 31, 2018 was less than $0.1 million . Contractual Maturity Expected maturities and contractual maturities may differ because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized cost and estimated fair value of debt securities, by contractual maturity, consisted of the following: March 31, 2018 Amortized Cost Fair Value Securities with maturity dates: (In thousands) Debt securities, available-for-sale: One year or less $ 50,526 $ 50,394 Over one through five years 207,292 205,249 Over five through ten years 175,529 172,538 Over ten years 1,320 1,276 434,667 429,457 Debt securities, held-to-maturity: One year or less 730 732 Over one through five years 3,940 3,812 Over five through ten years 628 620 5,298 5,164 Total $ 439,965 $ 434,621 Net Investment Income Net investment income consisted of the following: Three Months Ended March 31, 2018 2017 (In thousands) Interest income $ 2,887 $ 2,169 Dividends income 56 149 Net investment income $ 2,943 $ 2,318 Aging of Gross Unrealized Losses Gross unrealized losses and related fair values for debt securities (and equity securities as of December 31, 2017), grouped by duration of time in a continuous unrealized loss position, consisted of the following: Less than 12 months 12 months or longer Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses March 31, 2018 (In thousands) Debt securities - available-for-sale: United States government obligations and authorities $ 61,093 $ 1,284 $ 18,399 $ 529 $ 79,492 $ 1,813 Obligations of states and political subdivisions 15,762 203 1,821 84 17,583 287 Corporate 198,468 3,547 5,022 260 203,490 3,807 International 14,682 152 — — 14,682 152 $ 290,005 $ 5,186 $ 25,242 $ 873 $ 315,247 $ 6,059 Less than 12 months 12 months or longer Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses December 31, 2017 (In thousands) Debt securities - available-for-sale: United States government obligations and authorities $ 52,368 $ 517 $ 19,287 $ 329 $ 71,655 $ 846 Obligations of states and political subdivisions 32,030 221 5,676 157 37,706 378 Corporate 109,780 625 6,452 124 116,232 749 International 8,935 27 25 — 8,960 27 203,113 1,390 31,440 610 234,553 2,000 Equity securities 4,312 279 — — 4,312 279 Total investments $ 207,425 $ 1,669 $ 31,440 $ 610 $ 238,865 $ 2,279 As of March 31, 2018 , the Company held a total of 1,346 debt securities that were in an unrealized loss position, of which 52 securities were in an unrealized loss position continuously for 12 months or more. As of December 31, 2017 , the Company held a total of 866 debt and equity securities that were in an unrealized loss position, of which 73 securities were in an unrealized loss position continuously for 12 months or more. The unrealized losses associated with these securities consisted primarily of losses related to corporate securities. The Company holds some of its debt securities as available-for-sale and as such, these securities are recorded at fair value. The Company continually monitors the difference between cost and the estimated fair value of its investments, which involves uncertainty as to whether declines in value are temporary in nature. If the decline of a particular investment is deemed temporary, the Company records the decline as an unrealized loss in shareholders’ equity. If the decline is deemed to be other than temporary, the Company will write the security’s cost-basis or amortized cost-basis down to the fair value of the investment and recognizes an OTTI loss in the Company’s consolidated statement of operations. Additionally, any portion of such decline related to debt securities that is believed to arise from factors other than credit will be recorded as a component of other comprehensive income rather than charged against income. The company did not have any OTTI losses on its available-for-sale debt securities for the first three months of 2018 and 2017. As discussed in Note 2 above, beginning January 1, 2018, the Company’s equity investments are measured at fair value through net income. See Note 4 of 2017 Form 10-K for information on how the Company assessed and determined whether unrealized losses on our equity securities were other-than-temporary, which was primarily based on the duration of the decline in the fair value of such securities relative to their cost as of the balance sheet date. The company did not have any OTTI losses on its equity securities for the first three months of 2017. Collateral Deposits Investments, the majority of which were debt securities, with fair values of approximately $12.8 million and $12.9 million , were deposited with governmental authorities and into custodial bank accounts as required by law or contractual obligations as of March 31, 2018 and December 31, 2017 , respectively. |