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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Fixed income securities, held-to-maturity, fair value $ 167,061 $ 209,544
Fixed income securities, available-for-sale, amortized cost 4,506,580 4,352,514
Equity securities, available-for-sale, cost 126,881 193,816
Premiums receivable, allowance for uncollectible accounts 4,624 4,422
Reinsurance recoverable, allowance for uncollectible accounts 6,100 5,700
Property and equipment - at cost, accumulated depreciation and amortization $ 193,997 $ 188,548
Preferred stock, par value per share $ 0 $ 0
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value per share $ 2 $ 2
Common stock, shares authorized 360,000,000 360,000,000
Common stock, shares issued 101,451,214 100,861,372
Treasury stock - at cost, shares 43,638,649 43,500,642