Deferred Policy Acquisition Costs (Schedule of deferred policy acquisition costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Policy Acquisition Costs Disclosures [Abstract]
Balance, beginning of year	$ 23,968	$ 15,399	$ 12,866
Deferral of policy acquisition costs	65,553	60,041	48,721
Amortization of deferred policy acquisition costs	(64,574)	(51,472)	(46,188)
Balance, end of year	$ 24,947	$ 23,968	$ 15,399