Contractual Maturities of Debt Securities Held in Perpetual Care Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Perpetual care trusts - Fixed maturities $ in Thousands	Jun. 30, 2016 USD ($)
Investments Classified by Contractual Maturity Date [Line Items]
Less than 1 year	$ 234
1 year through 5 years	11,915
6 years through 10 years	1,809
More than 10 years	54
U.S. governmental securities
Investments Classified by Contractual Maturity Date [Line Items]
Less than 1 year	111
6 years through 10 years	39
More than 10 years	54
Corporate debt securities
Investments Classified by Contractual Maturity Date [Line Items]
Less than 1 year	123
1 year through 5 years	11,915
6 years through 10 years	$ 1,770