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Contingencies - Additional Information (Detail) (USD $)
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Mar. 31, 2015
claim
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Feb. 04, 2015
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Dec. 31, 2014
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|---|---|---|---|
| Loss Contingencies [Line Items] | |||
| Value of the service guarantee | $ 1,000,000 | ||
| Unfavorable regulatory action | Pending litigation | In re LifeLock, Inc. Securities Litigation | |||
| Loss Contingencies [Line Items] | |||
| Settlement offer | 20,000 | ||
| Accrued liability for legal settlement | 20,000 | ||
| Possible loss | $ 100,000 | ||
| Pending counter claims | 4 |