Condensed Consolidated Statements of Earnings (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Premiums and other revenues:
Universal life and annuity contract charges	$ 32,632	$ 31,439	$ 62,464	$ 63,535
Traditional life and annuity contract premiums	4,607	4,898	8,629	8,514
Net investment income	97,724	52,285	231,239	155,135
Other revenues	4,698	8,168	14,604	14,319
Net realized investment gains (losses):
Total other-than-temporary impairment (“OTTI”) losses	0	(86)	0	(334)
Portion of OTTI losses recognized in other comprehensive income	0	0	0	26
Net OTTI losses recognized in earnings	0	(86)	0	(308)
Other net investment gains (losses)	490	137	3,582	(70)
Total net realized investment gains (losses)	490	51	3,582	(378)
Total revenues	140,151	96,841	320,518	241,125
Benefits and expenses:
Life and other policy benefits	9,598	13,519	21,814	26,806
Amortization of deferred policy acquisition costs	38,848	18,237	66,337	42,006
Universal life and annuity contract interest	53,232	17,931	145,381	80,631
Other operating expenses	19,060	17,087	39,778	34,404
Total benefits and expenses	120,738	66,774	273,310	183,847
Earnings before Federal income taxes	19,413	30,067	47,208	57,278
Federal income taxes	5,623	9,255	15,207	18,058
Net earnings	$ 13,790	$ 20,812	$ 32,001	$ 39,220
Common Class A [Member]
Basic Earnings Per Share:
Earnings Per Share, Basic	$ 3.90	$ 5.90	$ 9.06	$ 11.12
Diluted Earnings Per Share:
Earnings Per Share, Diluted	$ 3.90	$ 5.88	$ 9.04	$ 11.08
Common Class B [Member]
Basic Earnings Per Share:
Earnings Per Share, Basic	$ 1.95	$ 2.95	$ 4.53	$ 5.56
Diluted Earnings Per Share:
Earnings Per Share, Diluted	$ 1.95	$ 2.95	$ 4.53	$ 5.56