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Sale of Assets (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Class A Membership Unit [Member]
Jun. 30, 2011
Class A Membership Unit [Member]
Jun. 30, 2012
Class A Membership Unit [Member]
Jun. 30, 2011
Class A Membership Unit [Member]
Jun. 30, 2012
Class B Membership Unit [Member]
Jun. 30, 2011
Class B Membership Unit [Member]
Jun. 30, 2012
Class B Membership Unit [Member]
Jun. 30, 2011
Class B Membership Unit [Member]
Apr. 19, 2007
Telos ID [Member]
Apr. 30, 2007
Telos ID [Member]
Apr. 20, 2007
Telos ID [Member]
Apr. 11, 2007
Telos ID [Member]
Apr. 30, 2007
Telos ID [Member]
Class A Membership Unit [Member]
Apr. 20, 2007
Telos ID [Member]
Class A Membership Unit [Member]
Apr. 30, 2007
Telos ID [Member]
Class B Membership Unit [Member]
Apr. 20, 2007
Telos ID [Member]
Class B Membership Unit [Member]
Noncontrolling Interest [Line Items]                                        
Net book value of assets contributed                               $ 17,000        
Percentage of membership interest owned before (in hundredths)                         99.999%              
Owned membership interest from private equity investors (in hundredths)                         0.001%              
Percentage of membership interest sold to investor (in hundredths)                             39.999%          
Cash consideration received on sale of membership interest                             6,000,000          
Profits 2,649,000 1,185,000 4,650,000 2,468,000 1,000,000 608,000 1,300,000 857,000 676,000 405,000 874,000 572,000                
Recognized gain on sale of membership interests to the Investors                           5,800,000            
Percentage of ownership interest owned after transaction (in hundredths)                                 60.00%   40.00%  
Number of members in board of director                           5            
Number of subclasses of membership units                           2            
Percentage of profit and loss allocated (in hundredths)                                   60.00%   40.00%
Number of directors entitled to appoint                                 3   2  
Quarterly distribution to minority shareholder 196,000 166,000 572,000 616,000         196,000 166,000 572,000 616,000   450,000            
Period for which quarterly distributions of $450,000 made                           18 months            
Cash received from operating agreement quarterly distributions 196,000 166,000 572,000 616,000         196,000 166,000 572,000 616,000   450,000            
Changes in non-controlling interest [Abstract]                                        
Non-controlling interest, beginning of period 203,000 171,000 381,000 454,000                                
Net income 676,000 405,000 874,000 572,000                                
Distributions (196,000) (166,000) (572,000) (616,000)         (196,000) (166,000) (572,000) (616,000)   (450,000)            
Non-controlling interest, end of period $ 683,000 $ 410,000 $ 683,000 $ 410,000