Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investments:
Fixed maturity securities—held-to-maturity, at amortized cost (fair value $607,072 and $639,309 in 2018 and 2017, respectively)	$ 605,877	$ 629,668
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	440,762	465,594
Equity securities—available-for-sale, at fair value (cost $13,590 and $8,503 in 2018 and 2017, respectively)	13,590	9,282
Short-term investments	106,811	25,770
Total investments	1,167,040	1,130,314
Cash and cash equivalents	21,176	55,559
Amounts recoverable from reinsurers	98,961	90,133
Premiums receivable, net of allowance	189,892	174,234
Deferred income taxes	19,891	19,262
Accrued interest receivable	10,458	10,635
Property and equipment, net	6,644	6,128
Deferred policy acquisition costs	21,601	20,251
Federal income tax recoverable	1,205	1,761
Other assets	17,413	9,959
Total assets	1,554,281	1,518,236
Liabilities:
Reserves for loss and loss adjustment expenses	783,601	771,845
Unearned premiums	167,310	157,270
Amounts held for others	39,103	36,908
Policyholder deposits	47,956	48,364
Insurance-related assessments	30,070	28,246
Accounts payable and other liabilities	38,441	37,076
Payable for investments purchased	2,409	13,104
Total liabilities	1,108,890	1,092,813
Shareholders’ equity:
Common stock: voting—$0.01 par value authorized shares—50,000,000 in 2018 and 2017; 20,528,230 and 20,504,165 shares issued and 19,269,980 and 19,245,915 shares outstanding in 2018 and 2017, respectively	205	204
Additional paid-in capital	210,895	210,081
Treasury stock, at cost (1,258,250 shares in 2018 and 2017)	(22,370)	(22,370)
Accumulated earnings	258,744	233,896
Accumulated other comprehensive income (loss), net	(2,083)	3,612
Total shareholders’ equity	445,391	425,423
Total liabilities and shareholders’ equity	$ 1,554,281	$ 1,518,236