Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net earnings	$ 42,987	$ 32,001
Adjustments to reconcile net earnings to net cash from operating activities:
Universal life and annuity contract interest	127,547	145,381
Surrender charges and other policy revenues	(7,009)	(15,280)
Realized (gains) losses on investments	(7,743)	(3,582)
Accrual and amortization of investment income	(1,400)	(1,369)
Depreciation and amortization	1,113	390
(Increase) decrease in value of index options	(9,959)	(22,750)
Decrease (increase) in deferred policy acquisition and sales inducement costs	3,664	(26,674)
Increase in accrued investment income	(2,301)	(5,967)
Increase in other assets	(2,232)	(2,756)
Increase in liabilities for future policy benefits	3,602	7,775
(Decrease) increase in other policyholder liabilities	2,797	(5,774)
Decrease in Federal income taxes	(12,757)	(8,555)
(Decrease) increase in other liabilities	3,385	(2,390)
Other, net	128	0
Net cash provided by operating activities	141,822	90,450
Proceeds from sales of:
Securities available for sale	(367)	11,196
Other investments	3,492	3,348
Proceeds from maturities and redemptions of:
Securities held to maturity	696,502	221,449
Securities available for sale	177,601	52,482
Index options	941	34,615
Purchases of:
Securities held to maturity	(785,820)	(530,454)
Securities available for sale	(271,552)	(143,859)
Index options	(26,153)	(29,279)
Other investments	(4,263)	(7,779)
Principal payments on mortgage loans	38,154	8,961
Cost of mortgage loans acquired	(8,403)	(28,476)
Decrease (increase) in policy loans	598	2,705
Other, net	0	0
Net cash used in investing activities	(179,270)	(405,091)
Cash flows from financing activities:
Deposits to account balances for universal life and annuity contracts	454,963	719,078
Return of account balances on universal life and annuity contracts	(425,827)	(405,185)
Issuance of common stock under stock option plan	0	1,217
Net cash provided by financing activities	29,136	315,110
Effect of foreign exchange	286	(134)
Net increase (decrease) in cash and short-term investments	(8,026)	335
Cash and short-term investments at beginning of period	119,290	80,332
Cash and short-term investments at end of period	111,264	80,667
Cash paid during the period for:
Interest	20	10
Income taxes	33,495	24,211
Noncash operating activities:
Deferral of sales inducements	$ 158	$ 5,225