STOCK BASED COMPENSATION - Shares Reserved for Issuance, Consisting of Both Shares Available For Awards and Shares Issuable Under Outstanding Stock Option (Detail)	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	8,056,772
1996 Directors Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	28,744
1997 Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	3,384
2000 Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	135,117
2005 Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	1,843,929
2008 Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	3,045,598
2011 Plan shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares reserved	3,000,000