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Long-Term Debt Obligations (Tables)
 12 Months Ended
Dec. 31, 2012
Long-Term Debt Obligations  
Schedule of components of long-term debt obligations

Long-term debt obligations consist of the following (in thousands):

 
   December 31,  
 
   2012   2011  

Revolving credit facility

   $ —   $ —  

Other debt

     2,400     2,700  

Notes to former owners

     5,000     12,681  
           

Total debt

     7,400     15,381  

Less—current portion

     (300 )   (632 )
           

Total long-term portion of debt

   $ 7,100   $ 14,749  
           
Schedule of future principal payments of long-term debt

 At December 31, 2012, future principal payments of long-term debt are as follows (in thousands):

Year ended December 31—

        

2013

   $ 300  

2014

     5,300  

2015

     300  

2016

     300  

2017

     300  

Thereafter

     900  
       

 

   $ 7,400  
       
Schedule of interest expense

Interest expense included the following primary elements (in thousands):

 
   Year Ended December 31,  
 
   2012   2011   2010  

Interest expense on notes to former owners

   $ 255   $ 795   $ 627  

Interest expense on borrowings and unused commitment fees

     444     243     287  

Letter of credit fees

     667     622     447  

Amortization of debt financing costs

     229     226     338  
               

Total

   $ 1,595   $ 1,886   $ 1,699  
               
Schedule of reconciliation of Credit Facility Adjusted EBITDA to net income

The following is a reconciliation of Credit Facility Adjusted EBITDA to net income (in thousands):

Net income including noncontrolling interests

   $ 11,849  

Income taxes—continuing operations

     10,045  

Interest expense, net

     1,571  

Depreciation and amortization expense

     20,630  

Stock compensation expense

     2,797  

Income taxes—discontinued operations

     212  

EBITDA attributable to noncontrolling interests

     275  

Pre-acquisition results of acquired companies, as defined under the Facility

     730  
       

Credit Facility Adjusted EBITDA

   $ 48,109  
       
Schedule of market rates relating to interest options under the Facility

For illustrative purposes, the following are the respective market rates as of December 31, 2012 relating to interest options under the Facility:

Base Rate Loan Option:

        

Federal Funds Rate plus 0.50%

     0.67 %

Wells Fargo Bank, N.A. Prime Rate

     3.25 %

One-month LIBOR plus 1.00%

     1.21 %

Eurodollar Rate Loan Option:

        

One-month LIBOR

     0.21 %

Six-month LIBOR

     0.51 %
Summary of additional margins

 

 

 
   Consolidated Total Indebtedness to
Credit Facility Adjusted EBITDA		  
 
   Less than 0.75   0.75 to 1.25   1.25 to 2.00   2.00 to 2.50   2.50 or greater  

Additional Per Annum Interest Margin Added Under:

                                

Base Rate Loan Option

     0.75 %   1.00 %   1.25 %   1.50 %   1.75 %

Eurodollar Rate Loan Option

     1.75 %   2.00 %   2.25 %   2.50 %   2.75 %

Letter of credit fees

     1.30 %   1.50 %   1.70 %   1.90 %   2.10 %

Commitment fees on any portion of the Revolving Loan capacity not in use for borrowings or letters of credit at any given time

     0.25 %   0.30 %   0.35 %   0.45 %   0.50 %