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Summary Information by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Segment Reporting Information [Line Items]        
Net revenue $ 23,595 $ 23,856 [1] $ 44,659 $ 45,062 [1]
Gross profit 9,177 9,600 [1] 17,348 18,338 [1]
Gross profit % 39.00% 40.00% 39.00% 41.00%
Identity Management
       
Segment Reporting Information [Line Items]        
Revenues from external customers 10,575 14,183 21,646 26,888
Intersegment revenue 3 16 5 3
Total Identity Management revenue 10,578 14,199 21,651 26,891
Elimination of intersegment revenues (3) (16) (5) (3)
Net revenue 10,575 14,183 21,646 26,888
Gross profit 4,679 6,294 9,757 12,181
Gross profit % 44.00% 44.00% 45.00% 45.00%
ID Products
       
Segment Reporting Information [Line Items]        
Revenues from external customers 13,020 9,673 23,013 18,174
Intersegment revenue 194 161 292 174
Total Identity Management revenue 13,214 9,834 23,305 18,348
Elimination of intersegment revenues (194) (161) (292) (174)
Net revenue 13,020 9,673 23,013 18,174
Gross profit $ 4,498 $ 3,306 $ 7,591 $ 6,157
Gross profit % 35.00% 34.00% 33.00% 34.00%
[1] Certain amounts shown in the table above have changed as compared to amounts reported in prior periods as noted in Item 1, Financial Statements, Note 1 of Notes to Condensed Consolidated Financial Statements, Reclassifications and Restatements, for more details.