Annual report pursuant to Section 13 and 15(d)

RELATED PARTY TRANSACTIONS - Narrative (Details)

v3.10.0.1
RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Payments to aviation charter [Member] | Steve Hilton, Chairman and CEO [Member]      
Related Party Transaction [Line Items]      
Payments to related parties $ 606 $ 580 $ 711