Annual report pursuant to Section 13 and 15(d)

Debt (Narrative) (Details)

v3.10.0.1
Debt (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 14, 2017
Jun. 29, 2016
Dec. 31, 2018
Debt Instrument [Line Items]      
Credit facility borrowing base   $ 20.0  
Senior Tranche      
Debt Instrument [Line Items]      
Debt instrument, commitment fee   1.50%  
Maximum borrowing capacity under loan agreement   $ 50.0  
Subordinated Tranche      
Debt Instrument [Line Items]      
Debt instrument, commitment fee   2.30%  
Maximum borrowing capacity under loan agreement   $ 15.0  
Additional Term Loan [Member]      
Debt Instrument [Line Items]      
Credit facility borrowing base   5.0  
Borrowings $ 4.2    
Commitment fee percentage     2.30%
Commitment fees, amount     $ 5.0
Additional Term Loan [Member] | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Debt instrument interest rate spread 5.75%    
Term Loan [Member]      
Debt Instrument [Line Items]      
Loans Payable   $ 15.0  
Term Loan [Member] | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Debt instrument interest rate spread   5.75%