Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows From Operating Activities
Net income	$ 22,427	$ 23,679
Adjustments to reconcile net income to net cash provided by operating activities
Net accretion of bond premium	3,447	3,702
Depreciation and amortization	1,626	1,618
Stock-based compensation expense	977	553
Net realized investment gains	(2,055)	(887)
Net cash flows from trading investments	(129)	510
Deferred income tax benefit	322	(1,519)
Changes in:
Accrued investment income	(1,689)	(1,020)
Premiums receivable	(26,245)	(19,926)
Deferred policy acquisition costs	(3,579)	(6,333)
Reinsurance receivables	1,782	3,427
Prepaid reinsurance premiums	(322)	(295)
Other assets	(1,240)	(697)
Future policy benefits and losses, claims and loss settlement expenses	23,965	8,726
Unearned premiums	21,001	19,535
Accrued expenses and other liabilities	(7,205)	(20,919)
Income taxes payable	728	3,790
Deferred income taxes	(548)	(433)
Other, net	2,063	342
Total adjustments	12,899	(9,826)
Net cash provided by operating activities	35,326	13,853
Cash Flows From Investing Activities
Proceeds from sale of available-for-sale investments	1,968	5,017
Proceeds from call and maturity of held-to-maturity investments	8	31
Proceeds from call and maturity of available-for-sale investments	142,629	172,825
Proceeds from short-term and other investments	789	3,450
Purchase of available-for-sale investments	(124,338)	(133,920)
Purchase of short-term and other investments	0	(1,560)
Net purchases and sales of property and equipment	(569)	(1,881)
Net cash provided by investing activities	20,487	43,962
Policyholders’ account balances
Deposits to investment and universal life contracts	25,145	36,099
Withdrawals from investment and universal life contracts	(41,954)	(67,248)
Payment of cash dividends	(5,553)	(4,997)
Repurchase of common stock	0	(1,083)
Issuance of common stock	4,745	353
Tax impact from issuance of common stock	(664)	(193)
Net cash used in financing activities	(18,281)	(37,069)
Net Change in Cash and Cash Equivalents	37,532	20,746
Cash and Cash Equivalents at Beginning of Period	106,449	90,574
Cash and Cash Equivalents at End of Period	$ 143,981	$ 111,320