Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net cash provided by (used in) operating activities	[1]	$ 65,355	$ (81,005)
Securities available-for-sale:
Purchases – fixed maturity securities		(154,091)	(171,178)
Sales – fixed maturity securities		22,450	33,041
Maturities and calls – fixed maturity securities		48,781	73,530
Purchases – equity securities		(2,747)	(4,305)
Sales – equity securities		5,089	3,776
Bank loan participations:
Purchases		(33,536)	(35,832)
Sales		20,983	15,527
Maturities		7,571	11,190
Other invested assets:
Purchases		0	(9,795)
Return of capital		214	249
Short-term investments, net		(10,771)	79,091
Securities receivable or payable, net		10,652	10,694
Purchases of property and equipment		(1,729)	0
Net cash (used in) provided by investing activities		(87,134)	5,988
Financing activities
Senior debt repayments		(40,000)	0
Issuance of Series A preferred shares		144,898	0
Issuance of common shares under equity incentive plans		0	159
Common share repurchases		(922)	(2,553)
Dividends on common shares		(2,121)	(9,610)
Net cash provided by (used in) financing activities		101,855	(12,004)
Change in cash, cash equivalents, and restricted cash equivalents		80,076	(87,021)
Cash, cash equivalents, and restricted cash equivalents at beginning of period		292,128	1,022,180
Cash, cash equivalents, and restricted cash equivalents at end of period		372,204	935,159
Supplemental information
Interest paid		2,495	2,482
Restricted cash equivalents at beginning of period		102,005	859,920
Restricted cash equivalents at end of period		102,009	751,668
Change in restricted cash equivalents		$ 4	$ (108,252)

[1] Cash used in operating activities for the three months ended March 31, 2021 primarily reflects restricted cash equivalents returned to a former insured, per the terms of a collateral trust. See “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Amounts Recoverable from an Indemnifying Party and Reinsurer on Legacy Commercial Auto Book”. Excluding the restricted cash activity above, cash provided by operating activities was $65.4 million and $27.2 million for the three months ended March 31, 2022 and 2021, respectively.