XML 36 R108.htm IDEA: XBRL DOCUMENT v3.20.1
Disclosures about fair value of financial instruments (Narrative) (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Fair Value  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Short-term and long-term debt $ 701,538
Carrying Value  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Short-term and long-term debt $ 650,040