STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Management fee received	$ 1,627,558	$ 1,536,699	$ 1,454,902
Service agreement fee received	29,149	29,200	29,997
Net investment income received	31,281	26,796	25,999
Limited partnership distributions	5,128	17,837	14,112
(Decrease) increase in reimbursements collected from affiliates	(4,720)	247	7,775
Commissions paid to agents	(800,627)	(756,713)	(725,714)
Agents bonuses paid	(122,743)	(113,859)	(96,749)
Salaries and wages paid	(171,547)	(160,985)	(155,303)
Pension contribution and employee benefits paid	(89,981)	(44,250)	(40,993)
General operating expenses paid	(199,084)	(176,029)	(190,301)
Income taxes paid	(106,250)	(104,607)	(106,347)
Interest paid	(1,038)
Net cash provided by operating activities	197,126	254,336	217,378
Purchase of investments:
Available-for-sale securities	(391,181)	(369,811)	(228,308)
Limited partnerships	(410)	(578)	(928)
Proceeds from investments:
Available-for-sale securities sales	144,317	89,498	102,286
Available-for-sale securities maturities/calls	194,980	146,285	112,705
Trading securities		5,171
Limited partnerships	10,768	16,113	26,735
Net purchase of fixed assets	(28,927)	(25,208)	(12,556)
Net (distributions) collections on agent loans	(4,210)	1,586	688
Net cash (used in) provided by investing activities	(74,663)	(136,944)	622
Cash flows from financing activities
Dividends paid to shareholders	(145,765)	(135,985)	(126,858)
Net proceeds from long-term borrowings	49,951	24,776
Net cash used in financing activities	(95,814)	(111,209)	(126,858)
Net increase in cash and cash equivalents	26,649	6,183	91,142
Cash and cash equivalents, beginning of year	189,072	182,889	91,747
Cash and cash equivalents, end of year	$ 215,721	189,072	$ 182,889
Supplemental disclosure of noncash transactions
Transfer of investments from limited partnerships to trading securities		$ 4,464