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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Revenues |  |  |  |
Gross premiums written | $ 95,815 | $ 85,476 | $ 194,938 | $ 170,400
Ceded premiums written | (4,576) | (3,971) | (9,057) | (7,875)
Net premiums written | 91,239 | 81,505 | 185,881 | 162,525
Net premiums earned | 81,983 | 69,733 | 161,692 | 139,523
Net investment income | 6,649 | 6,605 | 13,319 | 13,519
Net realized gains/(losses) on investments | (1,291) | 137 | (1,267) | 1,928
Fee and other income | 170 | 162 | 279 | 321
Total revenues | 87,511 | 76,637 | 174,023 | 155,291
Expenses |  |  |  |
Loss and loss adjustment expenses incurred | 56,813 | 56,720 | 112,814 | 108,563
Underwriting and certain other operating costs | 7,770 | 4,923 | 14,838 | 9,210
Commissions | 6,229 | 5,399 | 12,393 | 10,694
Salaries and benefits | 5,664 | 5,025 | 11,309 | 10,158
Interest expense |  | 207 |  | 486
Policyholder dividends | 388 | 330 | 942 | 714
Total expenses | 76,864 | 72,604 | 152,296 | 139,825
Income before income taxes | 10,647 | 4,033 | 21,727 | 15,466
Income tax expense | 3,003 | 588 | 5,232 | 2,460
Net income | 7,644 | 3,445 | 16,495 | 13,006
Net income available to common shareholders | $ 7,618 | $ 3,443 | $ 16,454 | $ 13,001
Earnings per share |  |  |  |
Basic | $ 0.42 | $ 0.19 | $ 0.90 | $ 0.72
Diluted | $ 0.41 | $ 0.19 | $ 0.88 | $ 0.70
Shares used in computing earnings per share |  |  |  |
Basic | 18,353,174 | 18,150,306 | 18,317,452 | 18,145,525
Diluted | 18,712,299 | 18,588,495 | 18,713,776 | 18,586,156
Cash dividends declared per common share | $ 0.08 |  | $ 0.16 |

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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