XML 17 R38.htm IDEA: XBRL DOCUMENT v3.20.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Operating items, net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES      
Other operating items, net $ 3,112 $ 12 $ 4
pre-opening expenses relating to the Monarch Black Hawk Expansion project 2,500    
professional service fees relating to our construction litigation 300    
professional service fees relating to a due diligence on an acquisition opportunity $ 300