Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
Investments:
Fixed maturities, available-for-sale, at fair value (amortized cost: 2017: $2,678,475; 2016: $2,628,225)		$ 2,695,277	$ 2,635,882
Equity securities, available-for-sale, at fair value (cost: 2017: $326,910; 2016: $327,911)		362,214	349,142
Other invested assets		1,776	1,960
Short-term investments, at fair value (amortized cost: 2017: $123,796; 2016: $143,451)		123,846	143,539
Total investments		3,183,113	3,130,523
Cash		63,462	64,643
Premiums receivable		379,787	306,686
Prepaid reinsurance premiums		224,562	213,377
Reinsurance recoverable on paid losses		76,876	82,582
Reinsurance recoverable on unpaid losses and loss adjustment expenses		794,576	779,276
Deferred policy acquisition costs		126,199	119,660
Accrued investment income		18,107	17,315
Goodwill and other intangible assets		6,442	6,451
Current income tax receivable, net		4,280	20,556
Deferred income tax, net		21,574	20,938
Other assets		58,365	52,030
Total assets		4,957,343	4,814,037
Liabilities:
Reserves for losses and loss adjustment expenses		2,331,392	2,289,727
Unearned premiums		949,483	887,344
Reinsurance balances payable		118,167	108,980
Senior notes		263,767	263,728
Payable for investments purchased		6,715	0
Accounts payable and other liabilities		81,683	86,070
Total liabilities		3,751,207	3,635,849
Stockholders' equity:
Preferred stock ($.10 par value per share, authorized 1,000 shares, none issued)	[1]	0	0
Common stock ($.10 par value per share, authorized 50,000 shares, issued 36,484 shares for 2017 and 36,147 shares for 2016)		3,645	3,612
Additional paid-in capital	[1]	367,311	373,983
Treasury stock, at cost (7,023 shares for 2017 and 2016)	[1]	(155,801)	(155,801)
Retained earnings	[1]	967,305	947,519
Accumulated other comprehensive income	[1]	23,676	8,875
Total stockholders' equity	[1]	1,206,136	1,178,188
Total liabilities and stockholders' equity		$ 4,957,343	$ 4,814,037

[1] We completed a two-for-one stock split on January 20, 2017. All share and per share data prior to January 20, 2017 has been retroactively restated on a post-split basis.