Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net earnings	$ 51,265	$ 52,659
Adjustments to reconcile net earnings to net cash from operating activities:
Universal life and annuity contract interest	147,254	167,423
Surrender charges and other policy revenues	(1,340)	(28,569)
Realized (gains) losses on investments	(6,520)	(1,294)
Accrual and amortization of investment income	(2,140)	(1,565)
Depreciation and amortization	603	3,475
(Increase) decrease in value of index options	38,774	63,860
Increase in deferred policy acquisition and sales inducement costs	(52,324)	(77,107)
Increase in accrued investment income	(10,052)	(9,283)
Increase in other assets	(2,599)	(14,268)
Increase in liabilities for future policy benefits	17,250	26,109
(Decrease) increase in other policyholder liabilities	(3,142)	8,104
Decrease in Federal income taxes	(4,353)	(10,184)
(Decrease) increase in other liabilities	(322)	554
Other, net	0	(522)
Net cash provided by operating activities	172,354	179,392
Proceeds from sales of:
Securities available for sale	19,248	28,778
Other investments	4,732	3,544
Proceeds from maturities and redemptions of:
Securities held to maturity	375,016	534,123
Securities available for sale	89,379	53,767
Index options	73,980	31,302
Purchases of:
Securities held to maturity	(884,205)	(1,137,958)
Securities available for sale	(263,937)	(292,976)
Index options	(50,239)	(41,234)
Other investments	(10,361)	(531)
Principal payments on mortgage loans	13,577	17,352
Cost of mortgage loans acquired	(33,918)	(52,882)
Decrease (increase) in policy loans	4,225	(255)
Other, net	0	0
Net cash used in investing activities	(662,503)	(856,970)
Cash flows from financing activities:
Deposits to account balances for universal life and annuity contracts	1,116,161	1,060,960
Return of account balances on universal life and annuity contracts	(615,196)	(463,191)
Issuance of common stock under stock option plan	908	277
Net cash provided by financing activities	501,873	598,046
Effect of foreign exchange	(154)	(137)
Net increase (decrease) in cash and short-term investments	11,570	(79,669)
Cash and short-term investments at beginning of period	80,332	108,866
Cash and short-term investments at end of period	91,902	29,197
Cash paid during the period for:
Interest	10	30
Income taxes	30,209	35,600
Noncash operating activities:
Deferral of sales inducements	$ 12,386	$ 17,486