Fair Values of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of fair value, assets and liabilities measured on recurring basis

	As of December 31,
	2013				2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(In thousands)
Financial Assets:
Cash and cash equivalents	$	58,678	$	58,678	$	81,856	$	81,856
Mortgage Loan	3,502		3,502		—		—
Interest rate swap agreements	2,021		2,021		—		—
Financial Liabilities:
Mortgage notes payable	$	1,097,493	$	1,062,648	$	605,889	$	623,604
Notes payable to banks	303,000		302,393		262,000		254,215
Interest rate swap agreements	8,429		8,429		16,285		16,285