XML 89 R68.htm IDEA: XBRL DOCUMENT v3.6.0.2
Significant Accounting Policies (Concentrations of Credit Risk/Reclassification)(Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Tenant
agreement
Dec. 31, 2015
USD ($)
Dec. 31, 2014
Concentration of Credit Risk      
Debt Issuance Costs, Net $ 82,300 $ 130,300  
Common shares 1,017 1,001  
Additional paid-in-capital 5,624,545 5,439,735  
Treasury shares (124,049) (10,000)  
Retained earnings $ 1,578,893 $ 1,643,546  
Workforce concentration      
Concentration of Credit Risk      
Number of collective bargaining agreements | agreement 6    
Annualized rent | Customer concentration      
Concentration of Credit Risk      
Number of tenants (tenants) | Tenant 2    
Maximum percentage of annualized rent for any one tenant not individually disclosed (percent) (more than) 5.00%    
Annualized rent | 1515 Broadway | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 9.80% 10.20% 9.90%
Annualized rent | 388-390 Greenwich Street | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent)   9.40% 9.80%
Annualized rent | 919 Third Avenue | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 8.10% 7.80% 7.50%
Annualized rent | 1185 Avenue of the Americas | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 7.60% 7.50% 7.80%
Annualized rent | 11 Madison Avenue | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent)   7.50%  
Annualized rent | 420 Lexington Avenue | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 6.50% 6.40%  
Annualized rent | 1 Madison Ave | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 6.20% 5.70%  
Annualized rent | 485 Lexington Avenue (3) | Customer concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 5.00%    
Collective bargaining arrangements | Workforce concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 71.30%    
Collective bargaining arrangements expiring in December 2019 | Workforce concentration      
Concentration of Credit Risk      
Percentage of concentration (percent) 71.10%