STOCK-BASED COMPENSATION (Details 4)	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sub-limit for all types of stock awards included in available to be issued stock options (in shares)	1,208,299
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	1,208,299
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	6,035,221
2000 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	11,413
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	420,406
2003 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	28,673
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	794,607
2006 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	217,733
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	1,814,133
2009 Long Term Incentive Plan[Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	950,480
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	2,971,473
Stock Option Plan 1996 (Plan Expired) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	0
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	34,602
Long Term Incentive Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	6,000,619
Long Term Incentive Stock Option Plan Expired And Assumed [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	1,208,299
1997 Stock Plan For Non Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	173,766
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	590,043
Employee deferral Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	45,629
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	46,110
Stock Purchase Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant or purchase (in shares)	219,395
Long Term Incentive Plan authorized additional shares reserved for issuance (in shares)	636,153
Committed shares reserved under the stock purchase plans for non employee Directors	416,758