Stockholders' Equity - Additional Information (Detail)	12 Months Ended
Dec. 31, 2015 shares
Series A Junior Participating Preferred Stock [Member]
Class of Stock [Line Items]
Rights to purchase shares	0.01

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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Period Type:	duration