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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |
Schedule of Quantitative Disclosures of Our Financial Assets That Were Measured At Fair Value |
June 30, 2018 |  |  |  | Fair Value Measurements Using
($ in thousands) |  | Assets Measured at Fair Value |  | Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1)1 |  | Significant Other Observable Inputs (Level 2)1 |  | Significant Unobservable Inputs (Level 3)
Description |  |  |  |  |  |  |  |  |  |  |  |
Measured on a recurring basis: |  |  |  |  |  |  |  |  |  |  |  |
AFS fixed income securities: |  |  |  |  |  |  |  |
U.S. government and government agencies |  | $ | 38,896 |  |  | 22,479 |  |  | 16,417 |  |  | — |
Foreign government |  | 17,982 |  |  | — |  |  | 17,982 |  |  | — |
Obligations of states and political subdivisions |  | 1,253,667 |  |  | — |  |  | 1,253,667 |  |  | — |
Corporate securities |  | 1,614,484 |  |  | — |  |  | 1,614,484 |  |  | — |
CLO and other ABS |  | 771,597 |  |  | — |  |  | 768,408 |  |  | 3,189 |
CMBS |  | 451,593 |  |  | — |  |  | 451,593 |  |  | — |
RMBS |  | 989,434 |  |  | — |  |  | 989,434 |  |  | — |
Total AFS fixed income securities |  | 5,137,653 |  |  | 22,479 |  |  | 5,111,985 |  |  | 3,189 |
Equity securities: |  |  |  |  |  |  |  |
Common stock 2 |  | 172,157 |  |  | 145,038 |  |  | — |  |  | — |
Preferred stock |  | 4,421 |  |  | 4,421 |  |  | — |  |  | — |
Total equity securities |  | 176,578 |  |  | 149,459 |  |  | — |  |  | — |
Short-term investments |  | 164,118 |  |  | 163,120 |  |  | 998 |  |  | — |
Total assets measured at fair value |  | $ | 5,478,349 |  |  | 335,058 |  |  | 5,112,983 |  |  | 3,189 |
December 31, 2017 |  |  |  | Fair Value Measurements Using
($ in thousands) |  | Assets Measured at Fair Value |  | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)1 |  | Significant Other Observable Inputs (Level 2)1 |  | Significant Unobservable Inputs (Level 3)
Description |  |  |  |  |  |  |  |  |  |  |  |
Measured on a recurring basis: |  |  |  |  |  |  |  |  |  |  |  |
AFS fixed income securities: |  |  |  |  |  |  |  |
U.S. government and government agencies |  | $ | 49,740 |  |  | 24,652 |  |  | 25,088 |  |  | — |
Foreign government |  | 18,555 |  |  | — |  |  | 18,555 |  |  | — |
Obligations of states and political subdivisions |  | 1,582,970 |  |  | — |  |  | 1,582,970 |  |  | — |
Corporate securities |  | 1,617,468 |  |  | — |  |  | 1,617,468 |  |  | — |
CLO and other ABS |  | 795,458 |  |  | — |  |  | 795,458 |  |  | — |
CMBS |  | 383,449 |  |  | — |  |  | 376,895 |  |  | 6,554 |
RMBS |  | 714,882 |  |  | — |  |  | 714,882 |  |  | — |
Total AFS fixed income securities |  | 5,162,522 |  |  | 24,652 |  |  | 5,131,316 |  |  | 6,554 |
AFS equity securities: |  |  |  |  |  |  |  |
Common stock 2 |  | 167,757 |  |  | 138,640 |  |  | — |  |  | 5,398 |
Preferred stock |  | 14,948 |  |  | 14,948 |  |  | — |  |  | — |
Total AFS equity securities |  | 182,705 |  |  | 153,588 |  |  | — |  |  | 5,398 |
Total AFS securities |  | 5,345,227 |  |  | 178,240 |  |  | 5,131,316 |  |  | 11,952 |
Short-term investments |  | 165,555 |  |  | 165,555 |  |  | — |  |  | — |
Total assets measured at fair value |  | $ | 5,510,782 |  |  | 343,795 |  |  | 5,131,316 |  |  | 11,952 |
1 | There were no transfers of securities between Level 1 and Level 2.
2 | Investments amounting to $27.1 million at June 30, 2018, and $23.7 million at December 31, 2017, were measured at fair value using net asset value per share (or its practical expedient) and have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to total assets measured at fair value
Schedule of Changes in Fair Value of Securities Using Level 3 Inputs |
June 30, 2018 |  |  |  |  |
($ in thousands) | CMBS |  | Common Stock |  | CLO and Other ABS
Fair value, December 31, 2017 | $ | 6,554 |  |  | 5,398 |  |  | — |
Total net (losses) gains for the period included in: |  |  |  |  |
Other comprehensive income ("OCI") | — |  |  | — |  |  | — |
Net income | — |  |  | — |  |  | — |
Purchases | — |  |  | — |  |  | 3,189 |
Sales | — |  |  | — |  |  | — |
Issuances | — |  |  | — |  |  | — |
Settlements | — |  |  | — |  |  | — |
Transfers into Level 3 | — |  |  | — |  |  | — |
Transfers out of Level 3 | (6,554 | ) |  | (5,398 | ) |  | — |
Fair value, June 30, 2018 | $ | — |  |  | — |  |  | 3,189 |
Schedule of Quantitative Information of Our Financial Assets and Liabilities That Were Disclosed at Fair Value |
June 30, 2018 |  |  |  | Fair Value Measurements Using
($ in thousands) |  | Assets/ Liabilities Disclosed at Fair Value |  | Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |
HTM: |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 23,260 |  |  | — |  |  | 23,260 |  |  | — |
Corporate securities |  | 20,113 |  |  | — |  |  | 11,628 |  |  | 8,485 |
Total HTM fixed income securities |  | $ | 43,373 |  |  | — |  |  | 34,888 |  |  | 8,485 |
Financial Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt: |  |  |  |  |  |  |  |
7.25% Senior Notes |  | $ | 57,231 |  |  | — |  |  | 57,231 |  |  | — |
6.70% Senior Notes |  | 108,453 |  |  | — |  |  | 108,453 |  |  | — |
5.875% Senior Notes |  | 186,924 |  |  | 186,924 |  |  | — |  |  | — |
1.61% borrowings from FHLBNY |  | 23,979 |  |  | — |  |  | 23,979 |  |  | — |
1.56% borrowings from FHLBNY |  | 23,915 |  |  | — |  |  | 23,915 |  |  | — |
3.03% borrowings from FHLBI |  | 58,483 |  |  | — |  |  | 58,483 |  |  | — |
Total long-term debt |  | $ | 458,985 |  |  | 186,924 |  |  | 272,061 |  |  | — |
December 31, 2017 |  |  |  | Fair Value Measurements Using
($ in thousands) |  | Assets/ Liabilities Disclosed at Fair Value |  | Quoted Prices in Active Markets for Identical Assets/ Liabilities (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |
HTM: |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 26,261 |  |  | — |  |  | 26,261 |  |  | — |
Corporate securities |  | 17,839 |  |  | — |  |  | 12,306 |  |  | 5,533 |
Total HTM fixed income securities |  | $ | 44,100 |  |  | — |  |  | 38,567 |  |  | 5,533 |
Financial Liabilities |  |  |  |  |  |  |  |  |
Long-term debt: |  |  |  |  |  |  |  |
7.25% Senior Notes |  | $ | 61,391 |  |  | — |  |  | 61,391 |  |  | — |
6.70% Senior Notes |  | 116,597 |  |  | — |  |  | 116,597 |  |  | — |
5.875% Senior Notes |  | 186,332 |  |  | 186,332 |  |  | — |  |  | — |
1.61% borrowings from FHLBNY |  | 24,270 |  |  | — |  |  | 24,270 |  |  | — |
1.56% borrowings from FHLBNY |  | 24,210 |  |  | — |  |  | 24,210 |  |  | — |
3.03% borrowings from FHLBI |  | 60,334 |  |  | — |  |  | 60,334 |  |  | — |
Total long-term debt |  | $ | 473,134 |  |  | 186,332 |  |  | 286,802 |  |  | — |

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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=66048111&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=66048111&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, 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 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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