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ISSUANCE OF EQUITY (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended
Jun. 26, 2017
Jun. 07, 2017
Jun. 26, 2017
Jun. 30, 2017
Equity        
Issuance of stock on underwritten public offering (in shares)   7,000,000    
Price per share   $ 35.00    
Net proceeds received from the offerings     $ 253,400 $ 253,463
Underwriting discount and commissions and other stock issuance costs     $ 7,300  
Over-Allotment Option        
Equity        
Issuance of stock on underwritten public offering (in shares) 450,000      
Price per share $ 35.00   $ 35.00