CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investments:
Fixed maturity securities available-for-sale, amortized cost	$ 1,247,717	$ 1,253,166
Equity investments, cost	148,866
Equity investments, cost		144,274
Deferred policy acquisition costs from affiliates	43,634	40,848
Affiliated other assets	3,943	4,423
LIABILITIES
Affiliated losses and settlement expenses	752,852	726,413
Unearned premiums from affiliates	265,491	256,434
Affiliated other liabilities	$ 21,991	$ 27,520
STOCKHOLDERS' EQUITY
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	21,526,346	21,455,545
Common stock, shares outstanding (in shares)	21,526,346	21,455,545