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SUBSEQUENT EVENTS (Details) - Xenith - Subsequent Event
$ in Millions
Jan. 01, 2018
USD ($)
shares
Subsequent Event [Line Items]  
Fair value of total consideration transferred | $ $ 800.0
Number of shares equivalent to each share of acquired entity | shares 0.9354
Number of common shares issued | shares 21,922,077
Cash paid for outstanding options | $ $ 6.2