Quarterly report pursuant to Section 13 or 15(d)

Debt (Narrative) (Details)

v3.10.0.1
Debt (Narrative) (Details)
$ in Thousands
9 Months Ended
Mar. 14, 2017
USD ($)
Sep. 30, 2018
item
May 22, 2018
USD ($)
Jun. 29, 2016
USD ($)
Jun. 28, 2016
USD ($)
Debt Instrument [Line Items]          
Credit facility borrowing base         $ 20,000
Commitment fee percentage   2.30%      
Additional Term Loan [Member]          
Debt Instrument [Line Items]          
Debt instrument, additional borrowing available       $ 5,000  
Borrowings $ 4,200        
Number of quarterly principal installments | item   5      
Commitment fees, amount $ 0        
Term Loan [Member]          
Debt Instrument [Line Items]          
Termination or prepayment penalties     $ 0    
Debt instrument maximum borrowing capacity       $ 15,000  
Debt instrument interest rate spread   5.75%