Long-Term Debt (Parentheticlas) (Details 1)
9 Months Ended
Sep. 30, 2012
CapitalLeaseAssets
Crestpark LP, Inc. | Fixed Tranche
 
Debt Instrument [Line Items]  
Number of secured notes payable 1
Percentage of fixed tranche interest rate (in percent) 0.95%
Crestpark LP, Inc. | Floating Tranche
 
Debt Instrument [Line Items]  
Percentage of fixed tranche interest rate (in percent) 9.50%
IST Holdings, LLc | Fixed Tranche
 
Debt Instrument [Line Items]  
Number of secured notes payable 1
Percentage of fixed tranche interest rate (in percent) 6.00%
AHK Leasing,LLC | Capital Lease
 
Debt Instrument [Line Items]  
Number of capital lease operated with related parties 11
Percentage minimum capital lease carrying interest rates (in percent) 8.50%
Percentage maximum capital lease carrying interest rates ( in percent) 10.25%