SHARE-BASED PAYMENTS - Stock option activity (Details) $ / shares in Units, $ in Millions	1 Months Ended	6 Months Ended
	Nov. 27, 2016 USD ($) $ / shares shares	Nov. 27, 2016 USD ($) item $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of threshold days | item		5
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under our equity incentive plans (in shares)	10,000,000	10,000,000
Available for future grant (in shares)	8,400,000	8,400,000
Stock options
Shares
Converted (in shares)	607,420
Outstanding at end of the period (in shares)	607,420	607,420
Exercisable at end of year (in shares)	333,143	333,143
Weighted - Average Exercise Price (Per share)
Converted (in dollars per share) | $ / shares	$ 23.60
Outstanding at end of the period (in dollars per share) | $ / shares	23.60	$ 23.60
Exercisable at end of year (in dollars per share) | $ / shares	$ 20.52	$ 20.52
Weighted- Average Remaining Contractual Term (Years)
Outstanding (in years)		7 years 3 months 22 days
Exercisable (in years)		6 years 7 days
Exercisable aggregate intrinsic value | $	$ 5.5	$ 5.5
Outstanding aggregate intrinsic value | $	$ 4.0	$ 4.0