STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION - Modifications (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
Feb. 28, 2017	Jun. 30, 2017	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Fair value of modified award before modification	$ 0
Fair value of modified award after modification	$ 563
Incremental share-based compensation expense recorded		$ 318	$ 485

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration