Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities
Net income	$ 22,894	$ 25,541
Adjustments to reconcile net income to net cash provided by operating activities
Net accretion of bond premium	7,857	7,076
Depreciation and amortization	2,333	3,179
Stock-based compensation expense	2,254	1,865
Net realized investment gains	(6,634)	(3,651)
Net cash flows from trading investments	(1,524)	256
Deferred income tax benefit	(1,040)	(1,761)
Changes in:
Accrued investment income	(474)	235
Premiums receivable	(55,664)	(63,334)
Deferred policy acquisition costs	(7,153)	(11,007)
Reinsurance receivables	(4,554)	(7,413)
Prepaid reinsurance premiums	(184)	(363)
Income taxes receivable	6,773	(12,341)
Other assets	(498)	47
Future policy benefits and losses, claims and loss settlement expenses	71,378	78,807
Unearned premiums	58,542	60,851
Accrued expenses and other liabilities	17,300	7,083
Income taxes payable	0	(4,917)
Deferred income taxes	(1,112)	(550)
Other, net	1,640	1,474
Total adjustments	89,240	55,536
Net cash provided by operating activities	112,134	81,077
Cash Flows From Investing Activities
Proceeds from sale of available-for-sale investments	5,059	3,042
Proceeds from call and maturity of held-to-maturity investments	7	14
Proceeds from call and maturity of available-for-sale investments	147,717	311,478
Proceeds from short-term and other investments	3,320	1,412
Purchase of available-for-sale investments	(174,022)	(338,213)
Purchase of short-term and other investments	(2,985)	(415)
Net purchases and sales of property and equipment	(3,861)	(2,825)
Net cash used in investing activities	(24,765)	(25,507)
Policyholders’ account balances
Deposits to investment and universal life contracts	38,382	45,467
Withdrawals from investment and universal life contracts	(73,826)	(81,672)
Payment of cash dividends	(13,380)	(11,898)
Repurchase of common stock	(21,184)	0
Issuance of common stock	2,207	6,138
Tax impact from issuance of common stock	0	(354)
Net cash used in financing activities	(67,801)	(42,319)
Net Change in Cash and Cash Equivalents	19,568	13,251
Cash and Cash Equivalents at Beginning of Period	110,853	106,449
Cash and Cash Equivalents at End of Period	$ 130,421	$ 119,700