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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Premiums written: |  |  |  |
Direct | $ 275,245,000 | $ 282,113,000 | $ 541,068,000 | $ 547,404,000
Assumed | 685,000 | 182,000 | 1,973,000 | 390,000
Ceded | (30,096,000) | (32,280,000) | (60,505,000) | (66,498,000)
Net premiums written | 245,834,000 | 250,015,000 | 482,536,000 | 481,296,000
Increase in unearned premiums, net | (14,698,000) | (18,559,000) | (22,297,000) | (28,499,000)
Net premiums earned | 231,136,000 | 231,456,000 | 460,239,000 | 452,797,000
Investment income, net of expenses | 29,716,000 | 27,248,000 | 59,193,000 | 55,057,000
Net realized investment (losses) gains | (42,000) | 836,000 | (164,000) | 3,892,000
Other revenue | 2,502,000 | 3,994,000 | 4,924,000 | 10,367,000
Total revenues | 263,312,000 | 263,534,000 | 524,192,000 | 522,113,000
Losses and expenses: |  |  |  |
Losses incurred, net | 27,339,000 | 46,590,000 | 54,958,000 | 131,602,000
Amortization of deferred policy acquisition costs | 2,584,000 | 2,245,000 | 4,814,000 | 4,206,000
Other underwriting and operating expenses, net | 38,511,000 | 35,348,000 | 79,276,000 | 75,125,000
Interest expense | 14,197,000 | 12,244,000 | 30,506,000 | 26,945,000
Loss on debt extinguishment | 65,000 | 1,868,000 | 65,000 | 15,308,000
Total losses and expenses | 82,696,000 | 98,295,000 | 169,619,000 | 253,186,000
Income before tax | 180,616,000 | 165,239,000 | 354,573,000 | 268,927,000
Provision for income taxes | 61,994,000 | 56,018,000 | 146,153,000 | 90,515,000
Net income | $ 118,622,000 | $ 109,221,000 | $ 208,420,000 | $ 178,412,000
Earnings per share: |  |  |  |
Basic (in dollars per share) | $ 0.32 | $ 0.32 | $ 0.59 | $ 0.52
Diluted (in dollars per share) | $ 0.31 | $ 0.26 | $ 0.55 | $ 0.43
Weighted average common shares outstanding - basic (in shares) | 366,918 | 340,678 | 354,035 | 340,411
Weighted average common shares outstanding - diluted (in shares) | 394,470 | 446,139 | 398,302 | 450,354

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- Definition Amount of written premiums ceded to other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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