XML 33 R27.htm IDEA: XBRL DOCUMENT v3.19.3
Commitments and Contingencies - Textual (Details)
 9 Months Ended
Oct. 25, 2019
EUR (€)
Jun. 28, 2019
EUR (€)
Feb. 01, 2019
USD ($)
Sep. 30, 2019
USD ($)
ft²
VTT Technical Research Centre of Finland Ltd        
Long-term Purchase Commitment [Line Items]        
Commitment to pay   € 2,520,000    
Commitment development period   3 years    
Commitment success bonus award   € 450,000    
Commitments, right to terminate contract notice period   90 days    
VTT Technical Research Centre of Finland Ltd | Subsequent Event [Member]        
Long-term Purchase Commitment [Line Items]        
Commitment to pay, expanded € 690,000      
Commitment to pay, expanded, period 1 year 6 months      
Jupiter, Florida Headquarters Lease        
Long-term Purchase Commitment [Line Items]        
Area of building rented | ft²       4,900
Monthly rental rate | $       $ 9,700
Netherlands Office Lease        
Long-term Purchase Commitment [Line Items]        
Area of building rented | ft²       258
Rent expense | $     $ 4,000 $ 4,700
Term of contract     1 year