BUSINESS EMAIL COMPROMISE FRAUD LOSS (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended		33 Months Ended
	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2017
Unusual or Infrequent Item [Line Items]
Business e-mail compromise (“BEC”) fraud loss/(recovery)		$ 0	$ (3,000)		$ 0	$ (8,294,000)
Business Email Compromise Fraud Loss
Unusual or Infrequent Item [Line Items]
Aggregate funds transferred overseas in fraud loss	$ 46,700,000
Amount recovered from fraud loss							$ 8,600,000	$ 8,100,000	$ 16,700,000
Business e-mail compromise (“BEC”) fraud loss/(recovery)				$ (39,100,000)
Net recovery		$ 0			0		8,300,000
Unusual or Infrequent Item, Professional Service Fees							$ 300,000
Remaining amount to be recovered					$ 30,000,000