UNAUDITED INTERIM INFORMATION (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Oct. 01, 2016
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change (Note 1)	$ (964)
Paid-in Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change (Note 1)	$ 964
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets		$ 6,600
New Accounting Pronouncement, Early Adoption, Effect | Retained Earnings | Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change (Note 1)		(6,600)
Actual forfeiture versus the previously estimated rate | New Accounting Pronouncement, Early Adoption, Effect | Retained Earnings | Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change (Note 1)		(1,000)
Actual forfeiture versus the previously estimated rate | New Accounting Pronouncement, Early Adoption, Effect | Paid-in Capital | Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change (Note 1)		$ 1,000