Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Foreign tax credit carry forwards	$ 18,200,000	$ 18,200,000
Foreign tax credit carryforwards, expiration start year		2023
Foreign tax credit carryforwards, expiration end year		2025
Indefinitely reinvested foreign earnings	77,800,000	$ 77,800,000
Income tax provision (benefit), federal rate		35.00%	35.00%	35.00%
Unrecognized tax benefit	7,470,000	$ 7,470,000	$ 7,470,000	$ 1,180,000	$ 1,180,000
Unrecognized tax benefit that would affect the effective tax rate if recognized	3,400,000	3,400,000
Unrecognized tax benefit reduction due to settlements with taxing authorities and or statute of limitations expirations		7,500,000
Unrecognized tax benefit, interest accrued	200,000	200,000	1,200,000	0
Unrecognized tax benefit, penalties accrued	$ 0	0	0	$ 0
Internal Revenue Service (IRS) | Minimum
Income Taxes [Line Items]
Income tax, years under examination	2014
Federal
Income Taxes [Line Items]
Operating loss carry forwards	$ 18,500,000	$ 18,500,000
Operating loss carry forwards, expiration year		2035
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carry forwards	$ 18,600,000	$ 18,600,000
Operating loss carry forwards, expiration start year		2034
Operating loss carry forwards, expiration end year		2035
State Jurisdiction
Income Taxes [Line Items]
Operating loss carry forwards, increase (decrease) in valuation allowance			$ (11,200,000)
State Jurisdiction | Minimum
Income Taxes [Line Items]
Income tax, years under examination	2011
Local Jurisdiction | Minimum
Income Taxes [Line Items]
Income tax, years under examination	2007