Annual report pursuant to Section 13 and 15(d)

Acquisitions - Narrative (Details)

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Acquisitions - Narrative (Details)
£ in Millions
3 Months Ended 12 Months Ended
Aug. 16, 2018
USD ($)
Aug. 15, 2018
USD ($)
employee
shares
Aug. 15, 2018
GBP (£)
employee
shares
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
shares
Aug. 31, 2018
Business Acquisition [Line Items]                  
Granted (in shares) | shares           2,043,000 851,000 1,167,000  
Discount net cash flows to present value, rate   15.00% 15.00%            
Expected amortization of intangible assets per quarter       $ 1,600,000          
Decrease in goodwill           $ 2,512,000 $ (141,468,000)    
MetaPack                  
Business Acquisition [Line Items]                  
Business acquisition, percentage of voting interests acquired   100.00%             100.00%
Business acquisition, key sellers shares of voting interest acquired, percentage of total outstanding shares   80.00%              
Business combination, consideration transferred   $ 217,700,000 £ 171            
Granted (in shares) | shares   320,250 320,250            
Business acquisition, shares granted, number of new employees | employee   72 72            
Expiration period   10 years 10 years            
Business acquisition, goodwill, expected tax deductible amount   $ 0              
Business combination, acquisition related costs             2,500,000    
Foreign currency transaction gain (loss), before tax             (1,000,000.0)    
Business combination, pro forma information, revenue of acquiree since acquisition date, actual             20,300,000    
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual             $ 1,500,000    
Decrease in goodwill         $ 2,500,000        
Line of Credit | MetaPack | Revolving Credit Facility                  
Business Acquisition [Line Items]                  
Repayments of long-term lines of credit $ 12,700,000                
Vesting Option One | MetaPack                  
Business Acquisition [Line Items]                  
Percentage of options vesting   25.00% 25.00%            
Expected life (in years)   1 year 1 year            
Vesting Option Two | MetaPack                  
Business Acquisition [Line Items]                  
Percentage of options vesting   75.00% 75.00%            
Expected life (in years)   36 months 36 months