Revolving Term Credit Facilities and Debt - Schedule of Annual Maturities Of Debt Outstanding (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Line of Credit Facility [Line Items]  
2017 $ 27,075
2018 27,818
2019 8,539
2020 15,740
2021 55,246
Thereafter 2,637
Long-term Debt, Gross 137,055
Interest rate swaps 405
Debt issuance cost (1,561)
Total 133,916
Non Interest Bearing Promissory Note  
Line of Credit Facility [Line Items]  
Debt discount (835)
ASV Inc [Member]  
Line of Credit Facility [Line Items]  
2017 3,000
2018 3,006
2019 3,000
2020 2,999
2021 33,604
Long-term Debt, Gross 45,609
Debt issuance cost (738)
Total 44,871
Convertible Notes [Member]  
Line of Credit Facility [Line Items]  
Debt discount (1,148)
North America Except ASV [Member]  
Line of Credit Facility [Line Items]  
2017 1,180
2018 19,949
2020 7,500
2021 15,001
Long-term Debt, Gross 43,630
Debt issuance cost (392)
Total 42,090
North America Except ASV [Member] | Convertible Notes [Member]  
Line of Credit Facility [Line Items]  
Debt discount (1,148)
Italy [Member]  
Line of Credit Facility [Line Items]  
2017 22,895
2018 4,863
2019 5,539
2020 5,241
2021 6,641
Thereafter 2,637
Long-term Debt, Gross 47,816
Interest rate swaps 405
Debt issuance cost (431)
Total 46,955
Italy [Member] | Non Interest Bearing Promissory Note  
Line of Credit Facility [Line Items]  
Debt discount $ (835)