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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Revenues |  |  |  |
Gross premiums written | $ 86,137 | $ 77,283 | $ 281,075 | $ 247,683
Ceded premiums written | (4,519) | (4,032) | (13,576) | (11,907)
Net premiums written | 81,618 | 73,251 | 267,499 | 235,776
Net premiums earned | 81,596 | 72,425 | 243,288 | 211,948
Net investment income | 6,947 | 6,801 | 20,266 | 20,320
Net realized gains/(losses) on investments | (654) | 985 | (1,921) | 2,913
Fee and other income | 114 | 163 | 393 | 484
Total revenues | 88,003 | 80,374 | 262,026 | 235,665
Expenses |  |  |  |
Loss and loss adjustment expenses incurred | 57,046 | 53,851 | 169,860 | 162,414
Underwriting and certain other operating costs | 6,634 | 6,128 | 21,472 | 15,338
Commissions | 6,176 | 5,405 | 18,569 | 16,099
Salaries and benefits | 5,662 | 4,962 | 16,971 | 15,120
Interest expense |  | 80 |  | 566
Policyholder dividends | 38 | 945 | 980 | 1,659
Total expenses | 75,556 | 71,371 | 227,852 | 211,196
Income before income taxes | 12,447 | 9,003 | 34,174 | 24,469
Income tax expense | 2,748 | 1,882 | 7,980 | 4,342
Net income | 9,699 | 7,121 | 26,194 | 20,127
Net income available to common shareholders | $ 9,673 | $ 7,116 | $ 26,122 | $ 20,116
Earnings per share |  |  |  |
Basic | $ 0.53 | $ 0.39 | $ 1.42 | $ 1.11
Diluted | $ 0.52 | $ 0.38 | $ 1.39 | $ 1.08
Shares used in computing earnings per share |  |  |  |
Basic | 18,395,971 | 18,173,062 | 18,343,901 | 18,154,768
Diluted | 18,758,346 | 18,580,083 | 18,730,729 | 18,583,079
Cash dividends declared per common share | $ 0.08 |  | $ 0.24 |

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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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