CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fixed maturities, available-for-sale, amortized cost	$ 1,422,298	$ 1,813,426
Reinsurance balance receivable, net	13,268	12,181
Deferred commission and other acquisition expenses	63,533	77,356
Funds withheld receivable	715,623	684,441
Loss and loss adjustment expenses	2,071,222	2,439,907
Unearned premiums	182,121	220,269
Accrued expenses and other liabilities	$ 17,802	$ 32,444
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, shares issued (in shares)	89,732,851	88,161,638
Common shares, shares outstanding (in shares)	84,718,837	83,148,458
Treasury shares (in shares)	5,014,014	5,013,180
Related party transactions
Reinsurance balance receivable, net	$ 923
Deferred commission and other acquisition expenses	56,159	$ 68,433
Funds withheld receivable	668,188	632,305
Loss and loss adjustment expenses	1,920,745	2,272,418
Unearned premiums	156,869	189,797
Accrued expenses and other liabilities	$ 8,137	$ 20,049