Financing Receivables (Institutional Loan Balances and Related Allowances for Credit Losses) (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Receivables [Abstract]
Gross Institutional Loans	$ 50,215	$ 46,633	$ 47,937
Allowance for Credit Losses:
Balance at July 1	(6,289)	(10,003)	(10,003)
Charge-offs and Adjustments	71	8,570	10,777
Recoveries	(28)	(53)	(83)
Additional Provision	(7,627)	(3,001)	(6,980)
Balance at End of Period	(13,873)	(4,487)	(6,289)
Net Institutional Loans	$ 36,342	$ 42,146	$ 41,648