v2.4.0.8
Schedule of Long-Term Obligations (Parenthetical) (Details)
Sep. 30, 2013
Dec. 31, 2012
Dec. 31, 2011
Notes Payable
     
Debt Instrument      
Weighted average interest rates 1.80% 1.70% 2.00%
Other Long Term Debt
     
Debt Instrument      
Weighted average interest rates 3.50% 3.30% 3.20%