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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2016
Fair Value Disclosures [Abstract] |
Summary of Assets and Liabilities Measured At Fair Value on Recurring Basis | Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):
December 31, 2016 |  |  |  | Fair Value Measurement Using:
| Total |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |  |
Fixed maturity securities |  |  |  |  |  |  |  |
U.S. Government and government agencies |  | $ | 15,950 |  |  | $ | 5,140 |  |  | $ | 10,778 |  |  | $ | 32 |
States, municipalities and political subdivisions |  | 375,077 |  |  | — |  |  | 369,387 |  |  | 5,690 |
Foreign government |  | 5,978 |  |  | — |  |  | 5,978 |  |  | — |
Residential mortgage-backed securities |  | 138,196 |  |  | — |  |  | 82,242 |  |  | 55,954 |
Commercial mortgage-backed securities |  | 49,053 |  |  | — |  |  | 6,035 |  |  | 43,018 |
Asset-backed securities |  | 77,665 |  |  | — |  |  | 4,448 |  |  | 73,217 |
Corporate and other |  | 617,039 |  |  | 2,020 |  |  | 594,653 |  |  | 20,366 |
Total fixed maturity securities |  | 1,278,958 |  |  | 7,160 |  |  | 1,073,521 |  |  | 198,277 |
Equity securities |  |  |  |  |  |  |  |
Common stocks |  | 14,865 |  |  | 10,290 |  |  | — |  |  | 4,575 |
Perpetual preferred stocks |  | 36,654 |  |  | 9,312 |  |  | 27,342 |  |  | — |
Total equity securities |  | 51,519 |  |  | 19,602 |  |  | 27,342 |  |  | 4,575 |
Derivatives |  | 3,813 |  |  | — |  |  | — |  |  | 3,813 |
Total assets accounted for at fair value |  | $ | 1,334,290 |  |  | $ | 26,762 |  |  | $ | 1,100,863 |  |  | $ | 206,665 |
Liabilities |  |  |  |  |  |  |  |
Warrant liability |  | $ | 4,058 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,058 |
Contingent liability |  | 11,411 |  |  | — |  |  | — |  |  | 11,411 |
Other |  | 816 |  |  | — |  |  | — |  |  | 816 |
Total liabilities accounted for at fair value |  | $ | 16,285 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,285 |
December 31, 2015 |  |  |  | Fair Value Measurement Using:
| Total |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |  |
Fixed maturity securities |  |  |  |  |  |  |  |
U.S. Government and government agencies |  | $ | 17,083 |  |  | $ | 5,753 |  |  | $ | 11,257 |  |  | $ | 73 |
States, municipalities and political subdivisions |  | 386,260 |  |  | — |  |  | 380,601 |  |  | 5,659 |
Foreign government |  | 6,429 |  |  | — |  |  | 6,429 |  |  | — |
Residential mortgage-backed securities |  | 166,315 |  |  | — |  |  | 87,296 |  |  | 79,019 |
Commercial mortgage-backed securities |  | 75,035 |  |  | — |  |  | 14,510 |  |  | 60,525 |
Asset-backed securities |  | 34,451 |  |  | — |  |  | 6,798 |  |  | 27,653 |
Corporate and other |  | 546,268 |  |  | 7,090 |  |  | 525,234 |  |  | 13,944 |
Total fixed maturity securities |  | 1,231,841 |  |  | 12,843 |  |  | 1,032,125 |  |  | 186,873 |
Equity securities |  |  |  |  |  |  |  |
Common stocks |  | 18,625 |  |  | 13,693 |  |  | — |  |  | 4,932 |
Perpetual preferred stocks |  | 31,057 |  |  | 10,271 |  |  | 20,786 |  |  | — |
Total equity securities |  | 49,682 |  |  | 23,964 |  |  | 20,786 |  |  | 4,932 |
Derivatives |  | 4,843 |  |  | 632 |  |  | — |  |  | 4,211 |
Total assets accounted for at fair value |  | $ | 1,286,366 |  |  | $ | 37,439 |  |  | $ | 1,052,911 |  |  | $ | 196,016 |
Liabilities |  |  |  |  |  |  |  |
Warrant liability |  | $ | 4,332 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |
Total liabilities accounted for at fair value |  | $ | 4,332 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |
Schedule of Changes in Balances of Level 3 Financial Assets at Fair Value | Level 3 Measurements and Transfers
|  |  | Total realized/unrealized gains (losses) included in |  |  |  |  |  |  |  |  |
| Balance at December 31, 2015 | Net earnings (loss) | Other comp. income (loss) | Purchases and issuances | Sales and settlements | Transfer to Level 3 |  | Transfer out of Level 3 |  | Balance at December 31, 2016
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and government agencies |  | $ | 73 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | (43 | ) |  | $ | — |  |  | $ | — |  |  | $ | 32 |
States, municipalities and political subdivisions |  | 5,659 |  |  | 401 |  |  | (370 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | 5,690 |
Residential mortgage-backed securities |  | 79,019 |  |  | (1,928 | ) |  | 1,374 |  |  | — |  |  | (14,656 | ) |  | 16,878 |  |  | (24,733 | ) |  | 55,954 |
Commercial mortgage-backed securities |  | 60,525 |  |  | (958 | ) |  | 275 |  |  | — |  |  | (21,548 | ) |  | 12,515 |  |  | (7,791 | ) |  | 43,018 |
Asset-backed securities |  | 27,653 |  |  | 963 |  |  | 1,413 |  |  | 59,379 |  |  | (23,457 | ) |  | 14,426 |  |  | (7,160 | ) |  | 73,217 |
Corporate and other |  | 13,944 |  |  | 16 |  |  | (1,610 | ) |  | 13,369 |  |  | (4,475 | ) |  | 2,091 |  |  | (2,969 | ) |  | 20,366 |
Total fixed maturity securities |  | 186,873 |  |  | (1,506 | ) |  | 1,084 |  |  | 72,748 |  |  | (64,179 | ) |  | 45,910 |  |  | (42,653 | ) |  | 198,277 |
Equity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stocks |  | 4,932 |  |  | — |  |  | (357 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,575 |
Total equity securities |  | 4,932 |  |  | — |  |  | (357 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,575 |
Derivatives |  | 4,211 |  |  | (580 | ) |  | — |  |  | 230 |  |  | (48 | ) |  | — |  |  | — |  |  | 3,813 |
Contingent asset |  | — |  |  | (156 | ) |  | — |  |  | 2,992 |  |  | (2,836 | ) |  | — |  |  | — |  |  | — |
Total financial assets |  | $ | 196,016 |  |  | $ | (2,242 | ) |  | $ | 727 |  |  | $ | 75,970 |  |  | $ | (67,063 | ) |  | $ | 45,910 |  |  | $ | (42,653 | ) |  | $ | 206,665 |
|  |  |  | Total realized/unrealized (gains) losses included in |  |  |  |  |  |  |  |  |  |
| Balance at December 31, 2015 |  | Net earnings (loss) | Other comp. income (loss) | Purchases and issuances | Sales and settlements |  | Transfer to Level 3 |  | Transfer out of Level 3 |  | Balance at December 31, 2016
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant liability |  | $ | 4,332 |  |  | $ | (274 | ) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,058 |
Contingent liability |  | — |  |  | 8,773 |  |  | — |  |  | 2,995 |  |  | (357 | ) |  | — |  |  | — |  |  | 11,411 |
Other |  | — |  |  | (674 | ) |  | — |  |  | 1,490 |  |  | — |  |  | — |  |  | — |  |  | 816 |
Total financial liabilities |  | $ | 4,332 |  |  | $ | 7,825 |  |  | $ | — |  |  | $ | 4,485 |  |  | $ | (357 | ) |  | $ | — |  |  | $ | — |  |  | $ | 16,285 |
|  |  |  | Total realized/unrealized gains (losses) included in |  |  |  |  |  |  |  |  |  |
| Balance at December 31, 2014 | Net earnings (loss) | Other comp. income (loss) | Purchases and issuances | Sales and settlements | Transfer to Level 3 | Transfer out of Level 3 | Balance at December 31, 2015
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and government agencies |  | $ | — |  |  | $ | — |  |  | $ | (1 | ) |  | $ | 74 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 73 |
States, municipalities and political subdivisions |  | — |  |  | — |  |  | 7 |  |  | 5,652 |  |  | — |  |  | — |  |  | — |  |  | 5,659 |
Foreign government |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Residential mortgage-backed securities |  | — |  |  | 301 |  |  | (166 | ) |  | 78,884 |  |  | — |  |  | — |  |  | — |  |  | 79,019 |
Commercial mortgage-backed securities |  | — |  |  | (45 | ) |  | 197 |  |  | 60,373 |  |  | — |  |  | — |  |  | — |  |  | 60,525 |
Asset-backed securities |  | — |  |  | — |  |  | — |  |  | 27,653 |  |  | — |  |  | — |  |  | — |  |  | 27,653 |
Corporate and other |  | 250 |  |  | — |  |  | (53 | ) |  | 14,247 |  |  | (500 | ) |  | — |  |  | — |  |  | 13,944 |
Total fixed maturity securities |  | 250 |  |  | 256 |  |  | (16 | ) |  | 186,883 |  |  | (500 | ) |  | — |  |  | — |  |  | 186,873 |
Equity securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stocks |  | — |  |  | — |  |  | — |  |  | 4,932 |  |  | — |  |  | — |  |  | — |  |  | 4,932 |
Perpetual preferred stocks |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total equity securities |  | — |  |  | — |  |  | — |  |  | 4,932 |  |  | — |  |  | — |  |  | — |  |  | 4,932 |
Derivatives |  | — |  |  | (1,544 | ) |  | (628 | ) |  | 6,383 |  |  | — |  |  | — |  |  | — |  |  | 4,211 |
Total financial assets |  | $ | 250 |  |  | $ | (1,288 | ) |  | $ | (644 | ) |  | $ | 198,198 |  |  | $ | (500 | ) |  | $ | — |  |  | $ | — |  |  | $ | 196,016 |
|  |  |  | Total realized/unrealized gains (losses) included in |  |  |  |  |  |  |  |  |  |
| Balance at December 31, 2014 | Net earnings (loss) | Other comp. income (loss) | Purchases and issuances | Sales and settlements | Transfer to Level 3 | Transfer out of Level 3 | Balance at December 31, 2015
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |
Total financial liabilities |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,332 |
Schedule of Financial Instruments Measured at Fair Value on Nonrecurring Basis | The table excludes carrying amounts reported in the Consolidated Balance Sheets for cash, accounts receivable, costs and recognized earnings in excess of billings, accounts payable, accrued expenses, billings in excess of costs and recognized earnings, and other current assets and liabilities approximate fair value due to relatively short periods to maturity (in thousands):
December 31, 2016 |  |  |  |  |  | Fair Value Measurement Using:
| Carrying Value |  | Estimated Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |  |  |  |
Mortgage loans |  | $ | 16,831 |  |  | $ | 16,832 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,832 |
Policy loans |  | 18,247 |  |  | 18,247 |  |  | — |  |  | 18,247 |  |  | — |
Other invested assets |  | 5,719 |  |  | 4,597 |  |  | — |  |  | — |  |  | 4,597 |
Total assets not accounted for at fair value |  | $ | 40,797 |  |  | $ | 39,676 |  |  | $ | — |  |  | $ | 18,247 |  |  | $ | 21,429 |
Liabilities |  |  |  |  |  |  |  |  |  |
Annuity benefits accumulated (1) |  | $ | 251,270 |  |  | $ | 249,372 |  |  | $ | — |  |  | $ | — |  |  | $ | 249,372 |
Long-term obligations (2) |  | 378,780 |  |  | 376,081 |  |  | — |  |  | 376,081 |  |  | — |
Total liabilities not accounted for at fair value |  | $ | 630,050 |  |  | $ | 625,453 |  |  | $ | — |  |  | $ | 376,081 |  |  | $ | 249,372 |
December 31, 2015 |  |  |  |  |  | Fair Value Measurement Using:
| Carrying Value |  | Estimated Fair Value |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |  |  |  |
Mortgage loans |  | $ | 1,252 |  |  | $ | 1,252 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,252 |
Policy loans |  | 18,476 |  |  | 18,476 |  |  | — |  |  | 18,476 |  |  | — |
Other invested assets |  | 5,784 |  |  | 3,434 |  |  | — |  |  | — |  |  | 3,434 |
Total assets not accounted for at fair value |  | $ | 25,512 |  |  | $ | 23,162 |  |  | $ | — |  |  | $ | 18,476 |  |  | $ | 4,686 |
Liabilities |  |  |  |  |  |  |  |  |  |
Annuity benefits accumulated (1) |  | $ | 257,454 |  |  | $ | 258,847 |  |  | $ | — |  |  | $ | — |  |  | $ | 258,847 |
Long-term obligations (2) |  | 319,180 |  |  | 310,307 |  |  | — |  |  | 310,307 |  |  | — |
Total liabilities not accounted for at fair value |  | $ | 576,634 |  |  | $ | 569,154 |  |  | $ | — |  |  | $ | 310,307 |  |  | $ | 258,847 |
(1) Excludes life contingent annuities in the payout phase. (2) Excludes certain lease obligations accounted for under ASC 840, "Leases".

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19279-110258 + Details
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