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Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Feb. 28, 2014	Mar. 31, 2014	Apr. 30, 2014 Subsequent Event [Member] Employees	Jun. 30, 2014 Minimum [Member] Scenario, Forecast [Member]	Jun. 30, 2014 Maximum [Member] Scenario, Forecast [Member]
Loss Contingencies [Line Items]
Percentage of reduction in work force	10.00%
Severance costs		$ 0.4		$ 0.1	$ 0.2
Employees terminated			7

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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