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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Premiums written: |  |  |
Direct | $ 1,107,923,000 | $ 1,074,490,000 | $ 999,943,000
Assumed | 1,053,000 | 1,178,000 | 1,653,000
Ceded | (133,885,000) | (55,391,000) | (119,634,000)
Net premiums written | 975,091,000 | 1,020,277,000 | 881,962,000
Increase in unearned premiums | (49,865,000) | (124,055,000) | (37,591,000)
Net premiums earned | 925,226,000 | 896,222,000 | 844,371,000
Investment income, net of expenses | 110,666,000 | 103,741,000 | 87,647,000
Net realized investment gains (losses): |  |  |
Total other-than-temporary impairment losses | 0 | 0 | (144,000)
Portion of losses recognized in other comprehensive income (loss), before taxes | 0 | 0 | 0
Net impairment losses recognized in earnings | 0 | 0 | (144,000)
Other realized investment gains | 8,932,000 | 28,361,000 | 1,501,000
Net realized investment gains | 8,932,000 | 28,361,000 | 1,357,000
Other revenue | 17,659,000 | 12,964,000 | 9,259,000
Total revenues | 1,062,483,000 | 1,041,288,000 | 942,634,000
Losses and expenses: |  |  |
Losses incurred, net | 240,157,000 | 343,547,000 | 496,077,000
Change in premium deficiency reserve | 0 | (23,751,000) | (24,710,000)
Amortization of deferred policy acquisition costs | 9,646,000 | 8,789,000 | 7,618,000
Other underwriting and operating expenses, net | 150,763,000 | 155,577,000 | 138,441,000
Interest expense | 56,672,000 | 68,932,000 | 69,648,000
Loss on debt extinguishment | 90,531,000 | 507,000 | 837,000
Total losses and expenses | 547,769,000 | 553,601,000 | 687,911,000
Income before tax | 514,714,000 | 487,687,000 | 254,723,000
Provision for (benefit from) income taxes | 172,197,000 | (684,313,000) | 2,774,000
Net income | $ 342,517,000 | $ 1,172,000,000 | $ 251,949,000
Earnings per share: |  |  |
Basic (in dollars per share) | $ 1.00 | $ 3.45 | $ 0.74
Diluted (in dollars per share) | $ 0.86 | $ 2.60 | $ 0.64
Weighted average common shares outstanding - basic (in shares) | 342,890 | 339,552 | 338,523
Weighted average common shares outstanding - diluted (in shares) | 431,992 | 468,039 | 413,522
Dividends per share (in dollars per share) | $ 0 | $ 0 | $ 0

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