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Acquisition (Details) (USD $)
12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Jan. 04, 2011
Envision Systems Inc [Member]
Jan. 31, 2011
Envision Systems Inc [Member]
Minimum [Member]
Jan. 31, 2011
Envision Systems Inc [Member]
Maximum [Member]
Jan. 04, 2011
Envision Systems Inc [Member]
Contractual Customer Relationships [Member]
Jan. 04, 2011
Envision Systems Inc [Member]
Non-contractual Customer Relationships [Member]
Jan. 04, 2011
Envision Systems Inc [Member]
Developed Technology [Member]
Jan. 04, 2011
Envision Systems Inc [Member]
In Process Research and Development [Member]
Jan. 04, 2011
Envision Systems Inc [Member]
Domain Names and Other Marketing Related [Member]
Dec. 31, 2011
Tas Holdings Ltd [Member]
Apr. 26, 2010
Tas Holdings Ltd [Member]
Apr. 30, 2010
Tas Holdings Ltd [Member]
Minimum [Member]
Apr. 30, 2010
Tas Holdings Ltd [Member]
Maximum [Member]
Cost of Acquired Entity, Purchase Price [Abstract]                              
Cash paid at closing       $ 1,200,000                 $ 1,289,000    
Present value of estimated future payments       1,998,000                 740,000    
Payable to EnVision Shareholders - contracts receivable       687,000                      
Working capital retained by EnVision Shareholders - cash       109,000                      
Total estimated purchase price       3,994,000                 2,029,000    
Purchase Price Allocation [Abstract]                              
Cash       553,000                 68,000    
Contract receivables       1,124,000                 594,000    
Prepaid expenses and other current assets       62,000                 17,000    
Property and equipment, net       22,000                 496,000    
Receivable from En Vision shareholders       321,000                      
Intangible assets       1,509,000                 735,000    
Goodwill       1,854,000                 865,000    
Total assets acquired       5,445,000                 2,775,000    
Accounts payable, accrued expenses and other liabilities       429,000                 703,000    
Billings in excess of revenue earned       46,000                 43,000    
Deferred tax liability       976,000                      
Total liabilities assumed       1,451,000                 746,000    
Net assets aquired       3,994,000                 2,029,000    
Percentage of ownership interest acquired (in hundredths)       100.00%                 100.00%    
Acquired Finite Intangible Assets [Abstract]                              
Acquired intangible asset             438,000 433,000 471,000 152,000 15,000        
Weighted average useful life         3 years 8 years               1 year 10 years
Contingent consideration accrued, current 923,000   1,600,000                        
Contingent consideration accrued noncurrent 2,000,000   902,000                        
Reduction in fair value of contingent consideration                       116,000      
Number of contractual customers that completed their contract early                       1      
Business Acquisition, Pro Forma Information [Abstract]                              
Revenue 51,126,000 50,410,000                          
Operating income (loss) 2,590,000 (708,000)                          
Net income (loss) proforma $ 3,163,000 $ (1,711,000)                          
Earnings (loss) per common share - basic $ 0.17 $ (0.09)                          
Earnings (loss) per common share - diluted $ 0.17 $ (0.09)