Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value

	As of June 30, 2018
(Amounts in thousands)	Total		Level 1		Level 2		Level 3
Marketable securities	$	30,419	$	30,419	$	—	$	—
Interest rate cap (included in other assets)	2		—		2		—
Total assets	$	30,421	$	30,419	$	2	$	—

	As of December 31, 2017
(Amounts in thousands)	Total		Level 1		Level 2		Level 3
Marketable securities	$	35,156	$	35,156	$	—	$	—
Interest rate cap (included in other assets)	6		—		6		—
Total assets	$	35,162	$	35,156	$	6	$	—

Financial Assets and Liabilities Not Measured at Fair Value

The table below summarizes the carrying amounts and fair value of these financial instruments as of June 30, 2018 and December 31, 2017.

	As of June 30, 2018				As of December 31, 2017
(Amounts in thousands)	Carrying  Amount		Fair     Value		Carrying     Amount		Fair     Value
Assets:
Cash equivalents	$	259,774	$	259,774	$	273,914	$	273,914
Rego Park II loan participation	197,018		197,000		198,537		198,000
	$	456,792	$	456,774	$	472,451	$	471,914
Liabilities:
Mortgages payable (excluding deferred debt  issuance costs, net)	$	1,172,234	$	1,162,000	$	1,252,440	$	1,239,000