Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Identifiable Intangible Assets - Summary of Intangible Assets (Details)

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Goodwill and Other Identifiable Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]    
Gross carrying amount $ 6,584 $ 6,338
Accumulated amortization 2,829 1,621
Net amount $ 3,755 $ 4,717
Licenses    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 10 years 10 years
Gross carrying amount $ 185 $ 185
Accumulated amortization 155 137
Net amount $ 30 $ 48
Patents And Websites    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 5 years 5 years
Gross carrying amount $ 4,164 $ 4,173
Accumulated amortization 1,640 959
Net amount $ 2,524 $ 3,214
Customer Relationships    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 4 years 4 years
Gross carrying amount $ 1,373 $ 1,437
Accumulated amortization 572 240
Net amount $ 801 $ 1,197
Non-Compete Agreement    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 2 years 3 months 18 days 3 years
Gross carrying amount $ 229 $ 240
Accumulated amortization 154 52
Net amount 75 188
Commercials    
Finite Lived Intangible Assets [Line Items]    
Gross carrying amount 633 303
Accumulated amortization 308 233
Net amount $ 325 $ 70
Commercials | Minimum    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 2 years 2 years
Commercials | Maximum    
Finite Lived Intangible Assets [Line Items]    
Average estimated useful lives (in years) 3 years 3 years