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Investments | 3 Months Ended
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Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract] |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] | Investments The Company invests primarily in fixed maturity securities, which totaled 88.3% of total cash, cash equivalents and investments at March 31, 2016.
| March 31, 2016 |  | December 31, 2015
| Carrying Value |  | % of Total Carrying Value |  | Carrying Value |  | % of Total Carrying Value
| ($ In thousands)
Fixed maturity securities | $ | 1,059,265 |  |  | 88.3 |  |  | $ | 995,601 |  |  | 85.0 |
Equity securities | 23,548 |  |  | 2.0 |  |  | 23,438 |  |  | 2.0 |
Mortgage loans | 587 |  |  | — |  |  | 594 |  |  | 0.1 |
Policy loans | 62,011 |  |  | 5.2 |  |  | 60,166 |  |  | 5.1 |
Real estate and other long-term investments | 7,988 |  |  | 0.7 |  |  | 8,031 |  |  | 0.7 |
Short-term investments | — |  |  | — |  |  | 251 |  |  | — |
Cash and cash equivalents | 45,355 |  |  | 3.8 |  |  | 82,827 |  |  | 7.1 |
Total cash, cash equivalents and investments | $ | 1,198,754 |  |  | 100.0 |  |  | $ | 1,170,908 |  |  | 100.0 |
The following tables represent the cost, gross unrealized gains and losses and fair value for fixed maturities and equity securities as of the periods indicated.
| March 31, 2016
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
| (In thousands)
Fixed maturities: |  |  |  |  |  |  |
Available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 9,979 |  |  | 2,975 |  |  | — |  |  | 12,954 |
U.S. Government-sponsored enterprises | 19,551 |  |  | 1,217 |  |  | — |  |  | 20,768 |
States and political subdivisions | 513,752 |  |  | 22,792 |  |  | 2,233 |  |  | 534,311 |
Foreign governments | 103 |  |  | 29 |  |  | — |  |  | 132 |
Corporate | 223,005 |  |  | 13,171 |  |  | 3,481 |  |  | 232,695 |
Commercial mortgage-backed | 118 |  |  | 5 |  |  | — |  |  | 123 |
Residential mortgage-backed | 2,536 |  |  | 212 |  |  | 2 |  |  | 2,746 |
Total available-for-sale securities | 769,044 |  |  | 40,401 |  |  | 5,716 |  |  | 803,729 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises | 2,008 |  |  | 101 |  |  | — |  |  | 2,109 |
States and political subdivisions | 232,394 |  |  | 10,092 |  |  | 343 |  |  | 242,143 |
Corporate | 21,134 |  |  | 1,137 |  |  | 1,337 |  |  | 20,934 |
Total held-to-maturity securities | 255,536 |  |  | 11,330 |  |  | 1,680 |  |  | 265,186 |
Total fixed maturities | $ | 1,024,580 |  |  | 51,731 |  |  | 7,396 |  |  | 1,068,915 |
Short-term investments | $ | — |  |  | — |  |  | — |  |  | — |
Equity securities: |  |  |  |  |  |  |  |  |  |  |
Stock mutual funds | $ | 3,270 |  |  | — |  |  | 195 |  |  | 3,075 |
Bond mutual funds | 18,798 |  |  | 92 |  |  | 315 |  |  | 18,575 |
Common stock | 65 |  |  | 3 |  |  | 25 |  |  | 43 |
Preferred stock | 1,594 |  |  | 262 |  |  | 1 |  |  | 1,855 |
Total equity securities | $ | 23,727 |  |  | 357 |  |  | 536 |  |  | 23,548 |
| December 31, 2015
| Cost or Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
| (In thousands)
Fixed maturities: |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 9,995 |  |  | 2,597 |  |  | — |  |  | 12,592 |
U.S. Government-sponsored enterprises | 19,676 |  |  | 1,104 |  |  | — |  |  | 20,780 |
States and political subdivisions | 470,319 |  |  | 15,815 |  |  | 3,085 |  |  | 483,049 |
Foreign governments | 104 |  |  | 27 |  |  | — |  |  | 131 |
Corporate | 211,245 |  |  | 9,683 |  |  | 4,847 |  |  | 216,081 |
Commercial mortgage-backed | 140 |  |  | 5 |  |  | — |  |  | 145 |
Residential mortgage-backed | 2,658 |  |  | 214 |  |  | 2 |  |  | 2,870 |
Total available-for-sale securities | 714,137 |  |  | 29,445 |  |  | 7,934 |  |  | 735,648 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises | 2,010 |  |  | 110 |  |  | — |  |  | 2,120 |
States and political subdivisions | 236,776 |  |  | 6,756 |  |  | 883 |  |  | 242,649 |
Corporate | 21,167 |  |  | 530 |  |  | 1,500 |  |  | 20,197 |
Total held-to-maturity securities | 259,953 |  |  | 7,396 |  |  | 2,383 |  |  | 264,966 |
Total fixed maturity securities | $ | 974,090 |  |  | 36,841 |  |  | 10,317 |  |  | 1,000,614 |
Short-term investments | $ | 251 |  |  | — |  |  | — |  |  | 251 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |
Stock mutual funds | $ | 3,270 |  |  | — |  |  | 237 |  |  | 3,033 |
Bond mutual funds | 18,798 |  |  | 55 |  |  | 349 |  |  | 18,504 |
Common stock | 65 |  |  | — |  |  | 22 |  |  | 43 |
Preferred stock | 1,594 |  |  | 266 |  |  | 2 |  |  | 1,858 |
Total equity securities | $ | 23,727 |  |  | 321 |  |  | 610 |  |  | 23,438 |
The majority of the Company's equity securities are diversified stock and bond mutual funds. Valuation of Investments in Fixed Maturity and Equity Securities Held-to-maturity securities are reported in the financial statements at amortized cost and available-for-sale securities are reported at fair value. The Company monitors all debt and equity securities on an on-going basis relative to changes in credit ratings, market prices, earnings trends and financial performance, in addition to specific region or industry reviews. The assessment of whether other-than-temporary impairments have occurred is based on a case-by-case evaluation of underlying reasons for the decline in fair value. The Company determines other-than-temporary impairment by reviewing relevant evidence related to the specific security issuer as well as the Company's intent to sell the security, or if it is more likely than not that the Company would be required to sell a security before recovery of its amortized cost. When an other-than-temporary impairment has occurred, the amount of the other-than-temporary impairment recognized in earnings depends on whether the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis. If the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis, the other-than-temporary impairment is recognized in earnings equal to the entire difference between the investment's cost and its fair value at the balance sheet date. If the Company does not intend to sell the security and it is more likely than not that the Company will not be required to sell the security before recovery of its amortized cost basis, the other-than-temporary impairment is separated into the following: (a) the amount representing the credit loss; and (b) the amount related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to other factors is recognized in other comprehensive income, net of applicable taxes. The previous amortized cost basis less the other-than-temporary impairment recognized in earnings becomes the new amortized cost basis of the investment. The new amortized cost basis is not adjusted for subsequent recoveries in fair value. The Company evaluates whether a credit impairment exists for debt securities by considering primarily the following factors: (a) changes in the financial condition of the security's underlying collateral; (b) whether the issuer is current on contractually obligated interest and principal payments; (c) changes in the financial condition, credit rating and near-term prospects of the issuer; (d) the length of time to which the fair value has been less than the amortized cost of the security; and (e) the payment structure of the security. The Company's best estimate of expected future cash flows used to determine the credit loss amount is a quantitative and qualitative process. Quantitative review includes information received from third party sources such as financial statements, pricing and rating changes, liquidity and other statistical information. Qualitative factors include judgments related to business strategies, economic impacts on the issuer and overall judgment related to estimates and industry factors. The Company's best estimate of future cash flows involves assumptions including, but not limited to, various performance indicators, such as historical and projected default and recovery rates, credit ratings, and current delinquency rates. These assumptions require the use of significant management judgment and include the probability of issuer default and estimates regarding timing and amount of expected recoveries, which may include estimating the underlying collateral value. In addition, projections of expected future debt security cash flows may change based upon new information regarding the performance of the issuer. The primary factors considered in evaluating whether an impairment exists for an equity security include, but are not limited to: (a) the length of time and the extent to which the fair value has been less than the cost of the security; (b) changes in the financial condition, credit rating and near-term prospects of the issuer; (c) whether the issuer is current on contractually obligated payments; and (d) the intent and ability of the Company to retain the investment for a period of time sufficient to allow for recovery. Other-than-temporary impairments ("OTTI") were recognized during the three months ended March 31, 2016 totaling $1.9 million. No other-than-temporary impairments were recognized during the three months ended in 2015. The following tables present the fair values and gross unrealized losses of fixed maturities and equity securities that have remained in a continuous unrealized loss position for the periods indicated.
| March 31, 2016
| Less than 12 months |  | Greater than 12 months |  | Total
| Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities
| (In thousands, except for # of securities)
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions | $ | 52,802 |  |  | 400 |  |  | 47 |  |  | 15,061 |  |  | 1,833 |  |  | 19 |  |  | 67,863 |  |  | 2,233 |  |  | 66 |
Corporate | 48,931 |  |  | 2,309 |  |  | 50 |  |  | 4,861 |  |  | 1,172 |  |  | 8 |  |  | 53,792 |  |  | 3,481 |  |  | 58 |
Residential mortgage-backed | 53 |  |  | 1 |  |  | 1 |  |  | 130 |  |  | 1 |  |  | 3 |  |  | 183 |  |  | 2 |  |  | 4 |
Total available-for-sale securities | 101,786 |  |  | 2,710 |  |  | 98 |  |  | 20,052 |  |  | 3,006 |  |  | 30 |  |  | 121,838 |  |  | 5,716 |  |  | 128 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions | 9,813 |  |  | 115 |  |  | 15 |  |  | 10,136 |  |  | 228 |  |  | 10 |  |  | 19,949 |  |  | 343 |  |  | 25 |
Corporate | 1,624 |  |  | 134 |  |  | 1 |  |  | 4,682 |  |  | 1,203 |  |  | 4 |  |  | 6,306 |  |  | 1,337 |  |  | 5 |
Total held-to-maturity securities | 11,437 |  |  | 249 |  |  | 16 |  |  | 14,818 |  |  | 1,431 |  |  | 14 |  |  | 26,255 |  |  | 1,680 |  |  | 30 |
Total fixed maturities | $ | 113,223 |  |  | 2,959 |  |  | 114 |  |  | 34,870 |  |  | 4,437 |  |  | 44 |  |  | 148,093 |  |  | 7,396 |  |  | 158 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock mutual funds | $ | 3,073 |  |  | 195 |  |  | 4 |  |  | 2 |  |  | — |  |  | 1 |  |  | 3,075 |  |  | 195 |  |  | 5 |
Bond mutual funds | 10,196 |  |  | 280 |  |  | 2 |  |  | 105 |  |  | 35 |  |  | 1 |  |  | 10,301 |  |  | 315 |  |  | 3 |
Common stocks | — |  |  | — |  |  | — |  |  | 16 |  |  | 25 |  |  | 2 |  |  | 16 |  |  | 25 |  |  | 2 |
Preferred stocks | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |  |  | — |  |  | 1 |  |  | 1 |
Total equities | $ | 13,269 |  |  | 475 |  |  | 6 |  |  | 123 |  |  | 61 |  |  | 5 |  |  | 13,392 |  |  | 536 |  |  | 11 |
As of March 31, 2016, the Company had 30 available-for-sale fixed maturity securities and 14 held-to-maturity fixed maturity securities that were in an unrealized loss position for greater than 12 months. We reported 5 common stock holdings in an unrealized loss position for greater than 12 months as of March 31, 2016.
| December 31, 2015
| Less than 12 months |  | Greater than 12 months |  | Total
| Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities |  | Fair Value |  | Unrealized Losses |  | # of Securities
| (In thousands, except for # of securities)
Fixed maturities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions | $ | 136,862 |  |  | 1,474 |  |  | 129 |  |  | 12,633 |  |  | 1,611 |  |  | 12 |  |  | 149,495 |  |  | 3,085 |  |  | 141 |
Corporate | 70,081 |  |  | 4,330 |  |  | 69 |  |  | 3,308 |  |  | 517 |  |  | 3 |  |  | 73,389 |  |  | 4,847 |  |  | 72 |
Residential mortgage-backed | 57 |  |  | 1 |  |  | 2 |  |  | 133 |  |  | 1 |  |  | 3 |  |  | 190 |  |  | 2 |  |  | 5 |
Total available-for-sale securities | 207,000 |  |  | 5,805 |  |  | 200 |  |  | 16,074 |  |  | 2,129 |  |  | 18 |  |  | 223,074 |  |  | 7,934 |  |  | 218 |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions | 74,628 |  |  | 774 |  |  | 59 |  |  | 2,404 |  |  | 109 |  |  | 5 |  |  | 77,032 |  |  | 883 |  |  | 64 |
Corporate | 4,585 |  |  | 641 |  |  | 4 |  |  | 2,160 |  |  | 859 |  |  | 2 |  |  | 6,745 |  |  | 1,500 |  |  | 6 |
Total held-to-maturity securities | 79,213 |  |  | 1,415 |  |  | 63 |  |  | 4,564 |  |  | 968 |  |  | 7 |  |  | 83,777 |  |  | 2,383 |  |  | 70 |
Total fixed maturities | $ | 286,213 |  |  | 7,220 |  |  | 263 |  |  | 20,638 |  |  | 3,097 |  |  | 25 |  |  | 306,851 |  |  | 10,317 |  |  | 288 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock mutual funds | $ | 3,030 |  |  | 237 |  |  | 4 |  |  | 2 |  |  | — |  |  | 1 |  |  | 3,032 |  |  | 237 |  |  | 5 |
Bond mutual funds | 10,158 |  |  | 318 |  |  | 2 |  |  | 108 |  |  | 31 |  |  | 1 |  |  | 10,266 |  |  | 349 |  |  | 3 |
Preferred stocks | 101 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | 102 |  |  | 2 |  |  | 2 |
Common stock | 22 |  |  | 1 |  |  | 2 |  |  | 21 |  |  | 21 |  |  | 2 |  |  | 43 |  |  | 22 |  |  | 4 |
Total equities | $ | 13,311 |  |  | 557 |  |  | 9 |  |  | 132 |  |  | 53 |  |  | 5 |  |  | 13,443 |  |  | 610 |  |  | 14 |
We have reviewed these securities for the periods ended March 31, 2016 and December 31, 2015 and determined that no other-than-temporary impairment exists that have not been recognized based on our evaluation of the credit worthiness of the issuers and the fact that we do not intend to sell the investments nor is it likely that we will be required to sell the securities before recovery of their amortized cost bases which may be maturity. We continue to monitor all securities on an on-going basis, and future information may become available which could result in other-than-temporary impairments being recorded. The amortized cost and fair value of fixed maturity securities at March 31, 2016 by contractual maturity are shown in the table below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date have been reflected based upon final stated maturity.
| March 31, 2016
| Amortized Cost |  | Fair Value
| (In thousands)
Available-for-sale securities: |  |  |
Due in one year or less | $ | 39,255 |  |  | 39,635 |
Due after one year through five years | 114,971 |  |  | 118,508 |
Due after five years through ten years | 107,586 |  |  | 114,389 |
Due after ten years | 507,232 |  |  | 531,197 |
Total available-for-sale securities | 769,044 |  |  | 803,729 |
Held-to-maturity securities: |  |  |  |  |
Due in one year or less | 4,377 |  |  | 4,420 |
Due after one year through five years | 38,617 |  |  | 40,966 |
Due after five years through ten years | 52,955 |  |  | 55,963 |
Due after ten years | 159,587 |  |  | 163,837 |
Total held-to-maturity securities | 255,536 |  |  | 265,186 |
Total fixed maturities | $ | 1,024,580 |  |  | 1,068,915 |
The Company uses the specific identification method of the individual security to determine the cost basis used in the calculation of realized gains and losses related to security sales.
There were no sales of available-for-sale securities for the three month periods ended March 31, 2016 or 2015. There were no securities sold from the held-to-maturity portfolio for the three months ended March 31, 2016 or 2015.

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