Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Impairment and Intangibles (Details)

v3.20.4
Summary of Significant Accounting Policies - Impairment and Intangibles (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Goodwill and other intangible assets    
Number of Reporting Units | item 3  
Goodwill $ 113,134 $ 241,006
Goodwill impairment 0 0
Impairment of long-lived assets 127,872  
Intangible assets 273,755 275,675
Gross intangible assets 196,155 198,075
Accumulated amortization 120,964 111,953
Dealer network    
Goodwill and other intangible assets    
Gross intangible assets 80,000 80,000
Accumulated amortization $ 67,000 63,000
Dealer network | Minimum    
Goodwill and other intangible assets    
Amortization period 15 years  
Dealer network | Maximum    
Goodwill and other intangible assets    
Amortization period 20 years  
Trademarks    
Goodwill and other intangible assets    
Gross intangible assets $ 5,459 5,459
Accumulated amortization $ 3,807 3,713
Trademarks | Minimum    
Goodwill and other intangible assets    
Amortization period 7 years  
Trademarks | Maximum    
Goodwill and other intangible assets    
Amortization period 25 years  
Patents    
Goodwill and other intangible assets    
Gross intangible assets $ 21,136 21,136
Accumulated amortization $ 14,484 13,229
Patents | Minimum    
Goodwill and other intangible assets    
Amortization period 7 years  
Patents | Maximum    
Goodwill and other intangible assets    
Amortization period 20 years  
Customer relationships    
Goodwill and other intangible assets    
Gross intangible assets $ 80,920 80,920
Accumulated amortization $ 27,196 21,914
Customer relationships | Minimum    
Goodwill and other intangible assets    
Amortization period 15 years  
Customer relationships | Maximum    
Goodwill and other intangible assets    
Amortization period 19 years 6 months  
Noncompete agreements    
Goodwill and other intangible assets    
Gross intangible assets $ 8,640 8,640
Accumulated amortization $ 8,477 8,177
Noncompete agreements | Minimum    
Goodwill and other intangible assets    
Amortization period 4 years  
Noncompete agreements | Maximum    
Goodwill and other intangible assets    
Amortization period 5 years  
Municipal Reporting Unit    
Goodwill and other intangible assets    
Goodwill impairment $ 47,799  
Dejana Reporting Unit    
Goodwill and other intangible assets    
Goodwill impairment 80,073  
Work Truck Attachments segment    
Goodwill and other intangible assets    
Goodwill 113,132  
Gross intangible assets 177,765 177,785
Accumulated amortization 93,429 87,964
Work Truck Solutions    
Goodwill and other intangible assets    
Gross intangible assets 95,990 97,890
Accumulated amortization $ 27,535 $ 23,989