XML 20 R46.htm IDEA: XBRL DOCUMENT v2.4.0.6
Bank note payable and term note payable (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
2012 Credit Facility
Dec. 31, 2012
2012 Credit Facility
Less than or equal to 25%
Dec. 31, 2012
2012 Credit Facility
Greater than 25% to less than or equal to 35%
Dec. 31, 2012
2012 Credit Facility
Greater than 35% to less than or equal to 45%
Dec. 31, 2012
2012 Credit Facility
Greater than 45% to less than or equal to 55%
Dec. 31, 2012
2012 Credit Facility
Greater than 55%
Dec. 31, 2012
2012 Credit Facility
Minimum
Dec. 31, 2012
2012 Credit Facility
Minimum
Greater than 25% to less than or equal to 35%
Dec. 31, 2012
2012 Credit Facility
Minimum
Greater than 35% to less than or equal to 45%
Dec. 31, 2012
2012 Credit Facility
Minimum
Greater than 45% to less than or equal to 55%
Dec. 31, 2012
2012 Credit Facility
Minimum
Greater than 55%
Dec. 31, 2012
2012 Credit Facility
Maximum
Dec. 31, 2012
2012 Credit Facility
Maximum
Less than or equal to 25%
Dec. 31, 2012
2012 Credit Facility
Maximum
Greater than 25% to less than or equal to 35%
Dec. 31, 2012
2012 Credit Facility
Maximum
Greater than 35% to less than or equal to 45%
Dec. 31, 2012
2012 Credit Facility
Maximum
Greater than 45% to less than or equal to 55%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Dec. 31, 2012
2012 Credit Facility
LIBOR
Less than or equal to 25%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Greater than 25% to less than or equal to 35%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Greater than 35% to less than or equal to 45%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Greater than 45% to less than or equal to 55%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Greater than 55%
Dec. 31, 2012
2012 Credit Facility
LIBOR
Minimum
Dec. 31, 2012
2012 Credit Facility
LIBOR
Maximum
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Less than or equal to 25%
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Greater than 25% to less than or equal to 35%
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Greater than 35% to less than or equal to 45%
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Greater than 45% to less than or equal to 55%
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Greater than 55%
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Minimum
Dec. 31, 2012
2012 Credit Facility
Bank's base rate
Maximum
Dec. 31, 2012
2012 Credit Facility
Federal funds rate
Dec. 31, 2012
2012 Credit Facility
One month LIBOR
Dec. 31, 2012
2012 Revolver
Sep. 27, 2012
2012 Revolver
Dec. 31, 2012
2012 Term Loan
Sep. 27, 2012
2012 Term Loan
Dec. 31, 2012
2012 Term Loan
LIBOR
Dec. 31, 2012
2011 Revolver
Sep. 27, 2012
2011 Revolver
Dec. 31, 2011
2011 Revolver
Bank note and term note payable                                                                                        
Total available     $ 900,000,000                                                                   $ 500,000,000   $ 400,000,000     $ 600,000,000    
Borrowings outstanding 216,750,000 449,000,000                                                                     216,750,000 82,000,000   400,000,000     482,000,000 449,000,000
Term of the borrowing                                                                         4 years   5 years          
Additional borrowing capacity allowed by exercising an accordion feature                                                                         $ 250,000,000              
Extension available on debt                                                                         12 months              
Variable base rate                                     LIBOR               Bank's base rate               Federal Funds Rate One month LIBOR         LIBOR      
Basis spread on variable rate (as a percent)                                     1.45% 1.35% 1.40% 1.45% 1.65% 1.90% 1.35% 1.90% 0.45% 0.35% 0.40% 0.45% 0.65% 0.90% 0.35% 0.90% 0.50% 1.00%                
Fixed rate (as a percent)                                                                                 0.75%      
Overall rate (basis spread plus variable rate), end of period (as a percent)                                     1.67%               3.70%                       2.20%         2.24%
Weighted average rate interest rate, during period (as a percent) 2.23% 1.95%                                                                     1.66%              
Leverage Ratio                   25.00% 35.00% 45.00% 55.00%   25.00% 35.00% 45.00% 55.00%                                                    
Facility fee (as a percent)     0.30% 0.20% 0.25% 0.30% 0.35% 0.40% 0.20%         0.40%