Annual report pursuant to Section 13 and 15(d)

Variable Interest Entities (Narrative) (Details)

v3.10.0.1
Variable Interest Entities (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Variable Interest Entity [Line Items]      
Restricted cash included in other current assets $ 775 $ 938 $ 964
Agreed indemnification for loss or recapture of NMTC $ 35,100    
Primary Beneficiary      
Variable Interest Entity [Line Items]      
Tax credit percentage 39.00%    
Restricted cash included in other current assets $ 800    
Percentage of recapture 100.00%    
Recapture period 7 years    
Assets $ 89,000    
Liabilities $ 63,000