XML 104 R87.htm IDEA: XBRL DOCUMENT v3.19.1
Derivatives - Designated as cash flow hedging instruments (Details) - Derivatives qualifying as hedges [Member] - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount of Interest Rate Derivatives $ 34,090 $ 11,900
Derivative Asset, Fair Value, Net   $ 37
Other liabilities-non current [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Liability, Fair Value, Net $ (170)