Stock-based Compensation and Outstanding Awards - Summary of Status of Nonvested Shares of RSAs and RSUs (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2016 shares
Restricted Stock and Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares withheld and retired to satisfy minimum tax withholding	105

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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