Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Measurements [Abstract]

Fair Value, Assets Measured on Recurring Basis

9. Fair Value Measurements - continued
				As of March 31, 2016
	(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities		$	42,414	$	42,414	$	-	$	-
			Total assets	$	42,414	$	42,414	$	-	$	-
				As of December 31, 2015
	(Amounts in thousands)			Total		Level 1		Level 2		Level 3
		Marketable securities		$	43,191	$	43,191	$	-	$	-
			Total assets	$	43,191	$	43,191	$	-	$	-

Fair Value, by Balance Sheet Grouping

		As of March 31, 2016				As of December 31, 2015
		Carrying		Fair		Carrying		Fair
(Amounts in thousands)		Amount		Value		Amount		Value
Assets:
	Cash equivalents	$	222,929	$	222,929	$	226,476	$	226,476
Liabilities:
	Mortgages payable (excluding deferred debt issuance costs)	$	1,058,751	$	1,044,000	$	1,059,587	$	1,054,000