STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($)	Sep. 30, 2019	May 02, 2018
Equity [Abstract]
Authorized repurchase amount		$ 10,000,000.0
Remaining authorized repurchase amount	$ 8,000,000.0

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant