Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash Flows From Operating Activities
Net income	$ 19,936	$ 22,427
Adjustments to reconcile net income to net cash provided by operating activities
Net accretion of bond premium	3,901	3,447
Depreciation and amortization	1,165	1,626
Stock-based compensation expense	1,044	977
Net realized investment gains	(3,954)	(2,055)
Net cash flows from trading investments	(610)	(129)
Deferred income tax benefit	(134)	322
Changes in:
Accrued investment income	(3,078)	(1,689)
Premiums receivable	(18,226)	(26,245)
Deferred policy acquisition costs	(2,238)	(3,579)
Reinsurance receivables	(644)	1,782
Prepaid reinsurance premiums	(59)	(322)
Income taxes receivable	4,631	0
Other assets	(777)	(1,240)
Future policy benefits and losses, claims and loss settlement expenses	26,590	23,965
Unearned premiums	23,232	21,001
Accrued expenses and other liabilities	(12,472)	(7,205)
Income taxes payable	0	728
Deferred income taxes	647	(548)
Other, net	253	2,063
Total adjustments	19,271	12,899
Net cash provided by operating activities	39,207	35,326
Cash Flows From Investing Activities
Proceeds from sale of available-for-sale investments	5,059	1,968
Proceeds from call and maturity of held-to-maturity investments	3	8
Proceeds from call and maturity of available-for-sale investments	71,613	142,629
Proceeds from short-term and other investments	1,702	789
Purchase of available-for-sale investments	(103,623)	(124,338)
Purchase of short-term and other investments	(1,590)	0
Net purchases and sales of property and equipment	(1,392)	(569)
Net cash (used in) provided by investing activities	(28,228)	20,487
Policyholders’ account balances
Deposits to investment and universal life contracts	20,630	25,145
Withdrawals from investment and universal life contracts	(37,934)	(41,954)
Payment of cash dividends	(6,367)	(5,553)
Repurchase of common stock	(5,749)	0
Issuance of common stock	1,244	4,745
Tax impact from issuance of common stock	0	(664)
Net cash used in financing activities	(28,176)	(18,281)
Net Change in Cash and Cash Equivalents	(17,197)	37,532
Cash and Cash Equivalents at Beginning of Period	110,853	106,449
Cash and Cash Equivalents at End of Period	$ 93,656	$ 143,981