Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Unrecognized Tax Benefits [Line Items]
Federal corporate tax rate		35.00%
Tax cuts and jobs act of 2017 incomplete accounting transition toll tax rate percent for accumulated foreign earnings related to cash and cash equivalents		15.50%
Tax cuts and jobs act of 2017 incomplete accounting transition toll tax rate percent for accumulated foreign earnings related other earnings		8.00%
Tax cuts and jobs act of 2017 incomplete accounting transition toll tax for accumulated foreign earnings accrued income tax liabilities		$ 7.4
Tax cuts and jobs act of 2017 incomplete accounting transition toll tax for accumulated foreign earnings accrued income tax liabilities expected to be paid within one year		$ 0.9
Tax cuts and jobs act of 2017 incomplete accounting transition toll tax for accumulated foreign earnings accrued income tax liabilities payment period		8 years
Tax cuts and jobs act of 2017 incomplete accounting income tax benefit recorded		$ 7.8
Scenario Forecast [Member]
Unrecognized Tax Benefits [Line Items]
Federal corporate tax rate	21.00%
Federal and State [Member]
Unrecognized Tax Benefits [Line Items]
Net operating loss carry forwards		11.2
Tax credits available		1.0
Non U.S. [Member]
Unrecognized Tax Benefits [Line Items]
NOL and capital loss carryforwards		$ 13.7
Earliest Tax Year [Member] | Federal and State [Member]
Unrecognized Tax Benefits [Line Items]
Net operating loss carry forwards, expiration year		2023
Tax credit, expiration year		2018
Latest Tax Year [Member] | Federal and State [Member]
Unrecognized Tax Benefits [Line Items]
Net operating loss carry forwards, expiration year		2033
Tax credit, expiration year		2031