Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Operating activities
Net cash (used in) provided by operating activities	[1]	$ (222,060)	$ 213,787
Securities available-for-sale:
Purchases – fixed maturity securities		(509,764)	(327,725)
Sales – fixed maturity securities		17,465	102,030
Maturities and calls – fixed maturity securities		163,974	85,921
Purchases – equity securities		(10,057)	(4,975)
Sales – equity securities		3,945	3,131
Bank loan participations:
Purchases		(36,168)	(73,102)
Sales		113,432	41,707
Maturities		22,786	34,303
Other invested assets:
Purchases		(1,687)	0
Return of capital		314	1,477
Redemptions		16,292	7,016
Short-term investments, net		84,939	32,082
Securities receivable or payable, net		(487)	10,673
Purchases of property and equipment		(315)	(442)
Net cash used in investing activities		(135,331)	(87,904)
Financing activities
Senior debt issuances		119,000	0
Senior debt repayments		(60,000)	(20,000)
Dividends paid		(27,838)	(27,463)
Issuance of common shares under equity incentive plans		2,529	7,961
Common share repurchases		(2,186)	(2,536)
Net cash provided by (used in) financing activities		31,505	(42,038)
Change in cash, cash equivalents, and restricted cash equivalents		(325,886)	83,845
Cash, cash equivalents, and restricted cash equivalents at beginning of period		1,406,076	172,457
Cash, cash equivalents, and restricted cash equivalents at end of period		1,080,190	256,302
Supplemental information
Interest paid		9,023	$ 9,510
Restricted cash returned to a former insured		258,900
Cash provided by operating activities excluding reduction in collateral funds		$ 36,900

[1] Cash used in operating activities for the nine months ended September 30, 2020 primarily reflects $258.9 million of restricted cash equivalents returned to a former insured, per the terms of a collateral trust (see Amounts Recoverable from an Indemnifying Party in Liquidity and Capital Resources). Excluding the reduction in the collateral funds, cash provided by operating activities was $36.9 million for the nine months ended September 30, 2020.