Annual report pursuant to Section 13 and 15(d)

Subsequent Event (Details Textual)

v3.8.0.1
Subsequent Event (Details Textual)
$ / shares in Units, € in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Feb. 19, 2018
USD ($)
Feb. 19, 2018
EUR (€)
Feb. 06, 2018
$ / shares
shares
Feb. 27, 2018
USD ($)
Dec. 30, 2017
USD ($)
Dec. 30, 2017
EUR (€)
Faster S.p.A [Member]            
Subsequent Event [Line Items]            
Recorded sales         $ 130,000 € 105,000
Adjusted EBITDA margin         27.50% 27.50%
Subsequent Event [Member]            
Subsequent Event [Line Items]            
Net increase to shareholders' equity and cash proceeds from offering       $ 239,824    
Subsequent Event [Member] | Faster S.p.A [Member]            
Subsequent Event [Line Items]            
Business acquisition, date of agreement Feb. 19, 2018 Feb. 19, 2018        
Total purchase consideration $ 531,000 € 430,000        
Cash consideration transferred 161,000          
Cash consideration transferred through revolving credit facility $ 370,000          
Subsequent Event [Member] | Public Offering            
Subsequent Event [Line Items]            
Common stock issued and sold | shares     4,400,000      
SharePrice | $ / shares     $ 57.50