XML 75 R61.htm IDEA: XBRL DOCUMENT v3.10.0.1
Indebtedness - Schedule of Required Principal Payments on Outstanding Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
2019 $ 567  
2020 250,597  
2021 24,836  
2022 0  
2023 0  
Thereafter 0  
Total $ 276,000 $ 856,940