v2.4.0.8
Acquisition (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 0 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Contingent consideration
Feb. 22, 2013
Endeka
Feb. 22, 2013
Endeka
Existing customer contracts and relationships
Feb. 22, 2013
Endeka
Technology
Feb. 22, 2013
Endeka
Trademark and tradename
Feb. 22, 2013
Endeka
Non-compete agreement
Feb. 22, 2013
Endeka
Other intangibles
Feb. 22, 2013
Endeka
Identifiable intangible assets
Minimum
Feb. 22, 2013
Endeka
Identifiable intangible assets
Maximum
Feb. 22, 2013
Endeka
Contingent consideration
item
Acquisition                        
Number of components of contingent consideration                       2
Discount rate (as a percent)     45.00%             40.00% 50.00% 50.50%
Royalty rates (as a percent)                   0.50% 1.50%  
Estimated Fair Value                        
Cash paid       $ 4,894                
Holdback consideration       400                
Contingent consideration       1,329                
Total consideration       6,623                
Recognized amounts of identifiable assets acquired and liabilities assumed:                        
Cash       20                
Other current assets       44                
Property and equipment       4,617                
Other assets       12                
Accounts payable       (992)                
Other current liabilities       (186)                
Notes payable and financed liabilities       (6,476)                
Deferred tax liabilities       (3,062)                
Net tangible liabilities acquired       (6,023)                
Intangibles         4,770 930 300 250 95      
Goodwill 33,045 26,744   6,301                
Total purchase price       6,623                
Estimated Useful Life         10 years 6 years 10 years 2 years 10 years      
Gross intangible assets 35,285 28,905                    
Accumulated amortization 19,763 18,311                    
Future amortization expense 521                      
Future amortization expense                        
2014 2,034                      
2015 1,878                      
2016 1,817                      
2017 1,651                      
2018 $ 1,444