OTHER ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Other Assets [Abstract]
Contract assets - long-term	$ 7,154		$ 7,231
Lease assets	3,828	$ 4,048	0
Deferred tax assets	295		295
Other assets	7,168		301
Total other assets	18,445		$ 7,827
Other assets, net
Other Assets [Line Items]
Deposit asset	$ 6,900