Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jul. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Dec. 01, 2015	Jun. 30, 2014
Income Tax [Line Items]
Operating Loss Carryforwards			$ 55.5	$ 11.1
Operating Loss Carry Forwards Expiration Description		expiring beginning in 2021 for federal and 2016 for California
Deferred Tax Assets Net Operating Income Loss Carry Forwards					$ 30.4
Domestic Tax Authority [Member]
Income Tax [Line Items]
Net Operating Loss Carryforward Period Increase Decrease	$ 9.6
Foreign Tax Authority [Member]
Income Tax [Line Items]
Net Operating Loss Carryforward Period Increase Decrease	$ 5.5	$ 5.5