XML 35 R51.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]      
Depreciation $ 36,646 $ 30,364 $ 27,381