Leases (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Leases [Line Items]
Future Minimum Lease Payments Current	$ 88,983	$ 88,983
Future Minimum Rental Payments Due In Two Years	87,201	87,201
Future Minimum Rental Payments Due In Three Years	82,299	82,299
Future Minimum Rental Payments Due in Four Years	72,262	72,262
Future Minimum Rental Payments Due in Five Years	65,745	65,745
Aggregate Thereafter Future Minimum Rental Payments	258,349	258,349
Future Minimum Rental Receivables Current	4,275	4,275
Future Minimum Rental Receivables Due In Two Years	4,114	4,114
Future Minimum Rental Receivables Due In Three Years	3,380	3,380
Future Minimum Rental Receivables Due in Four Years	2,945	2,945
Future Minimum Rental Receivables Due in Five Years	2,360	2,360
Aggregate Thereafter Future Minimum Rental Receivables	21,951	21,951
Leases Expiring With No Renewal Options Current Year		2
Leases Expiring With No Renewal Options, Next 5 years		24
Leases Expiring With Renewal Options, Next 5 years		48
Rent expense		118,811	117,229	112,055
Non Base Rent Expense		23,539	23,291	20,788
Rental Income Including Non-Cash Rental Income		5,161	4,363	4,612
Rental Income from Owned Property		1,968	1,968	1,968
Letters of credit outstanding, amount related to leases	1,264	1,264
Rental income above base rent		242	59	488
Non cash rental income revenue out of period adjustment	$ 424	$ 424
Future annual rental income manhattan building	2,000	2,000