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Schedule III - Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Schedule III- Supplementary Insurance Information |
($ in thousands) |  | Deferred policy acquisition costs |  | Reserve for loss and loss expense |  | Unearned premiums |  | Net premiums earned |  | Net investment income 1 |  | Loss and loss expense incurred |  | Amortization of deferred policy acquisition costs |  | Other operating expenses 2 |  | Net premiums written
Standard Commercial Lines Segment |  | $ | 226,464 |  |  | 3,436,363 |  |  | 1,108,009 |  |  | 2,049,614 |  |  | — |  |  | 1,187,856 |  |  | 445,661 |  |  | 270,107 |  |  | 2,137,071 |
Standard Personal Lines Segment |  | 16,848 |  |  | 224,200 |  |  | 309,125 |  |  | 307,739 |  |  | — |  |  | 211,300 |  |  | 34,477 |  |  | 53,702 |  |  | 304,592 |
E&S Lines Segment |  | 27,874 |  |  | 406,600 |  |  | 106,033 |  |  | 239,818 |  |  | — |  |  | 152,335 |  |  | 55,835 |  |  | 21,905 |  |  | 237,761 |
Investments Segment |  | — |  |  | — |  |  | — |  |  | — |  |  | 236,965 |  |  | — |  |  | — |  |  | — |  |  | — |
Total |  | $ | 271,186 |  |  | 4,067,163 |  |  | 1,523,167 |  |  | 2,597,171 |  |  | 236,965 |  |  | 1,551,491 |  |  | 535,973 |  |  | 345,714 |  |  | 2,679,424 |
1 Includes “Net investment income earned” and “Total net realized and unrealized gains (losses)” on the Consolidated Statements of Income. 2“Other operating expenses” of $345,714 reconciles to the Consolidated Statements of Income as follows:
Other insurance expenses | $ | 358,069 |
Other income | (12,355 | )
Total | $ | 345,714 |
See accompanying Report of Independent Registered Public Accounting Firm in Item 8. "Financial Statements and Supplementary Data." of this Form 10-K. Year ended December 31, 2018
($ in thousands) |  | Deferred policy acquisition costs |  | Reserve for loss and loss expense |  | Unearned premiums |  | Net premiums earned |  | Net investment income 1 |  | Loss and loss expense incurred |  | Amortization of deferred policy acquisition costs |  | Other operating expenses 2 |  | Net premiums written
Standard Commercial Lines Segment |  | $ | 206,391 |  |  | 3,283,531 |  |  | 1,020,054 |  |  | 1,912,222 |  |  | — |  |  | 1,141,038 |  |  | 412,420 |  |  | 249,660 |  |  | 1,975,683 |
Standard Personal Lines Segment |  | 18,070 |  |  | 223,223 |  |  | 304,085 |  |  | 304,441 |  |  | — |  |  | 206,752 |  |  | 33,617 |  |  | 51,308 |  |  | 309,277 |
E&S Lines Segment |  | 28,151 |  |  | 387,114 |  |  | 107,793 |  |  | 219,566 |  |  | — |  |  | 150,344 |  |  | 49,005 |  |  | 20,912 |  |  | 229,326 |
Investments Segment |  | — |  |  | — |  |  | — |  |  | — |  |  | 140,413 |  |  | — |  |  | — |  |  | — |  |  | — |
Total |  | $ | 252,612 |  |  | 3,893,868 |  |  | 1,431,932 |  |  | 2,436,229 |  |  | 140,413 |  |  | 1,498,134 |  |  | 495,042 |  |  | 321,880 |  |  | 2,514,286 |
1 Includes “Net investment income earned” and “Total net realized and unrealized gains (losses)” on the Consolidated Statements of Income. 2“Other operating expenses” of $321,880 reconciles to the Consolidated Statements of Income as follows:
Other insurance expenses | $ | 331,318 |
Other income | (9,438 | )
Total | $ | 321,880 |
See accompanying Report of Independent Registered Public Accounting Firm in Item 8. "Financial Statements and Supplementary Data." of this Form 10-K. SCHEDULE III (continued) SELECTIVE INSURANCE GROUP, INC. AND CONSOLIDATED SUBSIDIARIES SUPPLEMENTARY INSURANCE INFORMATION Year ended December 31, 2017
($ in thousands) |  | Deferred policy acquisition costs |  | Reserve for loss and loss expense |  | Unearned premiums |  | Net premiums earned |  | Net investment income 1 |  | Loss and loss expense incurred |  | Amortization of deferred policy acquisition costs |  | Other operating expenses 2 |  | Net premiums written
Standard Commercial Lines Segment |  | $ | 193,408 |  |  | 3,165,217 |  |  | 956,173 |  |  | 1,788,499 |  |  | — |  |  | 1,008,150 |  |  | 387,552 |  |  | 243,283 |  |  | 1,858,735 |
Standard Personal Lines Segment |  | 16,952 |  |  | 263,166 |  |  | 295,435 |  |  | 289,701 |  |  | — |  |  | 189,294 |  |  | 32,542 |  |  | 56,761 |  |  | 296,775 |
E&S Lines Segment |  | 24,695 |  |  | 342,857 |  |  | 98,036 |  |  | 212,827 |  |  | — |  |  | 147,630 |  |  | 49,142 |  |  | 22,337 |  |  | 215,131 |
Investments Segment |  | — |  |  | — |  |  | — |  |  | — |  |  | 168,241 |  |  | — |  |  | — |  |  | — |  |  | — |
Total |  | $ | 235,055 |  |  | 3,771,240 |  |  | 1,349,644 |  |  | 2,291,027 |  |  | 168,241 |  |  | 1,345,074 |  |  | 469,236 |  |  | 322,381 |  |  | 2,370,641 |
1 Includes “Net investment income earned” and “Total net realized and unrealized gains (losses)” on the Consolidated Statements of Income. 2“Other operating expenses” of $322,381 reconciles to the Consolidated Statements of Income as follows:
Other insurance expenses | $ | 333,097 |
Other income | (10,716 | )
Total | $ | 322,381 |
See accompanying Report of Independent Registered Public Accounting Firm in Item 8. "Financial Statements and Supplementary Data." of this Form 10-K.

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- Definition The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
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