Number of shares that have been repurchased during the period and are being held in treasury.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Name:	us-gaap_TreasuryStockSharesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

TREASURY STOCK (Narrative) (Details) - USD ($)	12 Months Ended
TREASURY STOCK (Narrative) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Oct. 28, 2014
Accelerated Share Repurchases [Line Items]
Repurchase of common stock, shares	0	0
2014 Share Repurchase Program
Accelerated Share Repurchases [Line Items]
Stock repurchase authorized amount			$ 75,000,000
Amount available for share repurchase under this latest authorization	$ 75,000,000