| Intangible Assets, Net | 
 8. INTANGIBLE ASSETS, NET  
The following is a summary of intangible assets as of March 31, 2020 and December 31, 2019:  
  
| 
   
 | 
   
 | 
 Customer Relationships 
 | 
   
 | 
   
 | 
 Other Intangible Assets 
 | 
   
 | 
   
 | 
 Total 
 | 
   
 | 
 
| 
 Cost 
 | 
    
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Balance, January 1, 2020 
 | 
    
 | 
 $ 
 | 
 44,060 
 | 
    
 | 
   
 | 
 $ 
 | 
 2,467 
 | 
    
 | 
   
 | 
 $ 
 | 
 46,527 
 | 
    
 | 
 
| 
 Disposal 
 | 
   
 | 
   
 | 
 — 
 | 
   
 | 
   
 | 
   
 | 
 (6 
 | 
 ) 
 | 
   
 | 
   
 | 
 (6 
 | 
 ) 
 | 
 
| 
 Balance, March 31, 2020 
 | 
    
 | 
   
 | 
 44,060 
 | 
   
 | 
   
 | 
   
 | 
 2,461 
 | 
   
 | 
   
 | 
   
 | 
 46,521 
 | 
    
 | 
 
| 
 Useful lives 
 | 
    
 | 
   
 | 
 10-20 years 
 | 
   
 | 
   
 | 
   
 | 
 3-5 years 
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Accumulated amortization 
 | 
    
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Balance, January 1, 2020 
 | 
    
 | 
   
 | 
 (14,833 
 | 
 ) 
 | 
   
 | 
   
 | 
 (2,408 
 | 
 ) 
 | 
   
 | 
   
 | 
 (17,241 
 | 
 ) 
 | 
 
| 
 Amortization expense 
 | 
    
 | 
   
 | 
 (663 
 | 
 ) 
 | 
   
 | 
   
 | 
 (40 
 | 
 ) 
 | 
   
 | 
   
 | 
 (703 
 | 
 ) 
 | 
 
| 
 Disposal 
 | 
   
 | 
   
 | 
 — 
 | 
   
 | 
   
 | 
   
 | 
 5 
 | 
   
 | 
   
 | 
   
 | 
 5 
 | 
   
 | 
 
| 
 Balance, March 31, 2020 
 | 
    
 | 
   
 | 
 (15,496 
 | 
 ) 
 | 
   
 | 
   
 | 
 (2,443 
 | 
 ) 
 | 
   
 | 
   
 | 
 (17,939 
 | 
 ) 
 | 
 
| 
 Net book value 
 | 
    
 | 
 $ 
 | 
 28,564 
 | 
   
 | 
   
 | 
 $ 
 | 
 18 
 | 
   
 | 
   
 | 
 $ 
 | 
 28,582 
 | 
    
 | 
 
| 
 Cost 
 | 
    
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Balance, January 1, 2019 
 | 
    
 | 
 $ 
 | 
 22,560 
 | 
    
 | 
   
 | 
 $ 
 | 
 2,467 
 | 
    
 | 
   
 | 
 $ 
 | 
 25,027 
 | 
    
 | 
 
| 
 Acquisition of Cortina 
 | 
   
 | 
   
 | 
 21,500 
 | 
   
 | 
   
 | 
   
 | 
 — 
 | 
   
 | 
   
 | 
   
 | 
 21,500 
 | 
   
 | 
 
| 
 Balance, December 31, 2019 
 | 
    
 | 
   
 | 
 44,060 
 | 
    
 | 
   
 | 
   
 | 
 2,467 
 | 
    
 | 
   
 | 
   
 | 
 46,527 
 | 
    
 | 
 
| 
 Useful lives 
 | 
    
 | 
   
 | 
 10-20 years 
 | 
    
 | 
   
 | 
   
 | 
 3-5 years 
 | 
    
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Accumulated amortization 
 | 
    
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
   
 | 
 
| 
 Balance, January 1, 2019 
 | 
    
 | 
   
 | 
 (12,887 
 | 
 ) 
 | 
   
 | 
   
 | 
 (2,247 
 | 
 ) 
 | 
   
 | 
   
 | 
 (15,134 
 | 
 ) 
 | 
 
| 
 Amortization expense 
 | 
    
 | 
   
 | 
 (1,946 
 | 
 ) 
 | 
   
 | 
   
 | 
 (161 
 | 
 ) 
 | 
   
 | 
   
 | 
 (2,107 
 | 
 ) 
 | 
 
| 
 Balance, December 31, 2019 
 | 
   
 | 
   
 | 
 (14,833 
 | 
 ) 
 | 
   
 | 
   
 | 
 (2,408 
 | 
 ) 
 | 
   
 | 
   
 | 
 (17,241 
 | 
 ) 
 | 
 
| 
 Net Book Value 
 | 
    
 | 
 $ 
 | 
 29,227 
 | 
   
 | 
   
 | 
 $ 
 | 
 59 
 | 
   
 | 
   
 | 
 $ 
 | 
 29,286 
 | 
   
 | 
 
 
 
  
Amortization expense related to intangible assets was $703 and $348 for the three months ended March 31, 2020 and 2019, respectively.  
  
During the three months ended March 31, 2020, the Company wrote off other intangible assets related to a non-compete agreement with one of the principals of Jamison which was no longer in effect at March 31, 2020 with a cost of $6 and the related accumulated amortization of $5. 
Amortization related to the Company’s finite life intangible assets is scheduled to be expensed over the next five years and thereafter as follows:  
  
| 
 2020 (remainder of) 
 | 
    
 | 
 $ 
 | 
 2,029 
 | 
    
 | 
 
| 
 2021 
 | 
    
 | 
   
 | 
 2,629 
 | 
    
 | 
 
| 
 2022 
 | 
    
 | 
   
 | 
 2,575 
 | 
    
 | 
 
| 
 2023 
 | 
    
 | 
   
 | 
 2,416 
 | 
    
 | 
 
| 
 2024 
 | 
    
 | 
   
 | 
 2,289 
 | 
   
 | 
 
| 
 Thereafter 
 | 
    
 | 
   
 | 
 16,644 
 | 
   
 | 
 
| 
 Total 
 | 
    
 | 
 $ 
 | 
 28,582 
 | 
    
 | 
 
 
 
  
 |