Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash provided by (used in) operating activities, continuing operations	$ 80	$ (121,846)
Net cash used in operating activities, discontinued operations	(12,168)	(15,164)
Net cash used in operating activities	(12,088)	(137,010)
Cash flows from investing activities:
Proceeds from sales of fixed-maturity investments available for sale	3,621	1,742
Proceeds from sales of trading securities	69,915	383,967
Proceeds from redemptions of fixed-maturity investments available for sale	5,502	0
Proceeds from redemptions of fixed-maturity investments held to maturity	0	300
Purchases of fixed-maturity investments available for sale	(152,290)	(71,173)
Sales (purchases) and redemptions of short-term investments, net	106,728	(182,936)
Sales of other assets, net	632	640
Purchases of property and equipment, net	(2,470)	(2,769)
Acquisitions, net of cash acquired	(6,449)	0
Net cash provided by investing activities, continuing operations	25,189	129,771
Net cash provided by investing activities, discontinued operations	9,514	4,681
Net cash provided by investing activities	34,703	134,452
Cash flows from financing activities:
Dividends paid	(478)	(433)
Excess tax benefits from stock-based awards	1,408	89
Net cash provided by (used in) financing activities, continuing operations	930	(344)
Net cash provided by (used in) financing activities, discontinued operations	0	0
Net cash provided by (used in) financing activities	930	(344)
Effect of exchange rate changes on cash	(46)	7
Increase (decrease) in cash	23,499	(2,895)
Cash, beginning of period	30,465	22,880
Change in cash of business held for sale	3,240	(387)
Cash, end of period	57,204	19,598
Supplemental disclosures of cash flow information:
Income taxes (received) paid	(41)	1,592
Interest paid	$ 4,516	$ 4,520