Annual report pursuant to Section 13 and 15(d)

Derivative Instruments And Hedging Strategies (Narrative) (Details)

v3.19.3.a.u2
Derivative Instruments And Hedging Strategies (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Apr. 30, 2017
Derivatives, Fair Value [Line Items]        
Derivative gains (losses) on cash flow hedges $ 67 $ 0 $ (389)  
Cash Flow Hedging | Interest Rate Swap        
Derivatives, Fair Value [Line Items]        
Derivative, notional amount $ 48,000      
Derivative, fixed interest rate 1.74%     2.79%
Derivative gains (losses) on cash flow hedges $ 100