XML 96 R82.htm IDEA: XBRL DOCUMENT v3.8.0.1
Schedule of debt maturities (Details 4)
$ in Thousands
Dec. 31, 2017
USD ($)
Long-term debt maturities [Line Items]  
2018 $ 148,499
2019 125,504
2020 73,012
2021 15,312
2022 147,214
Thereafter $ 1,211,007