Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Gain (Loss) on Derivatives (Details)

v3.19.3
Derivative Financial Instruments - Gain (Loss) on Derivatives (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivative [Line Items]      
Gain (loss) from cash flow hedges, effect net of tax $ 200 $ (100) $ (400)
Interest rate swap agreements | Cash Flow Hedging      
Derivative [Line Items]      
Gain (Loss) Recognized in OCI 61 318 400
Interest rate swap agreements | Interest expense and other | Cash Flow Hedging      
Derivative [Line Items]      
Gain (Loss) Recognized in Income 613 77 (136)
Gain (Loss) Recognized in Income $ (73) $ (54) $ 152