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Deferred Charges and Other Non-Current Assets Deferred Charges and Other Non-Current Assets (Details) (USD $)
 1 Months Ended 12 Months Ended 12 Months Ended
Apr. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Noncompete Agreements
Dec. 31, 2012
Noncompete Agreements
Dec. 31, 2011
Noncompete Agreements
Dec. 31, 2013
Debt, Excluding Convertible Junior Subordinated Debentures
Dec. 31, 2012
Debt, Excluding Convertible Junior Subordinated Debentures
Dec. 31, 2013
Convertible Junior Subordinated Debenture
Dec. 31, 2012
Convertible Junior Subordinated Debenture
Dec. 31, 2013
Minimum
Noncompete Agreements
Dec. 31, 2013
Maximum
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]                        
Term of agreements not to compete (in years)                     1 year 10 years
Amortization of intangible assets       $ 79,207 $ 98,849 $ 104,634            
Write off of deferred loan costs 400,000                      
Prepaid agreements not to compete, net of accumulated amortization of $4,877 and $4,807, respectively       1,299,000 326,000              
Accumulated amortization of intangible assets       4,807,000 4,877,000              
Origination costs, net of accumulated amortization             2,602,000 3,041,000 2,949,000 2,232,000    
Accumulated amortization of origination costs             1,252,000 199,000 1,095,000 1,811,000    
Deferred income tax asset   0 2,220,000                  
Tradenames   5,430,000 1,605,000                  
Deferred costs and other assets   $ 12,280,000 $ 9,424,000