Investments in Debt and Equity Securities (Tables)

9 Months Ended

Sep. 30, 2019

Investments in Debt and Equity Securities

Summary of debt and equity securities

	Gross Unrealized
	(dollars in thousands)
							Fair
September 30, 2019	Cost		Gains		Losses		Value
Equity	$	256,835	$	114,881	$	(7,298)	$	364,418
Debt		309,021		10,185		(563)		318,643
Other		8,198		—		—		8,198
Total	$	574,054	$	125,066	$	(7,861)	$	691,259

	Gross Unrealized
	(dollars in thousands)
							Fair
December 31, 2018	Cost		Gains		Losses		Value
Equity	$	251,226	$	64,954	$	(9,105)	$	307,075
Debt		278,030		1,718		(4,955)		274,793
Other		3,075		—		—		3,075
Total	$	532,331	$	66,672	$	(14,060)	$	584,943