Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Foreign tax credit carry forwards	$ 15,300,000
Foreign tax credit carryforwards, expiration start year	2023
Foreign tax credit carryforwards, expiration end year	2025
Indefinitely reinvested foreign earnings	$ 89,300,000
Income tax provision (benefit), federal rate	35.00%	35.00%	35.00%
Unrecognized tax benefit	$ 7,470,000	$ 1,180,000	$ 1,180,000	$ 1,180,000
Unrecognized tax benefit that would affect the effective tax rate if recognized	3,200,000
Unrecognized tax benefit reduction due to settlements with taxing authorities and or statute of limitations expirations	7,500,000
Unrecognized tax benefit, interest accrued	1,200,000	0	0
Unrecognized tax benefit, penalties accrued	$ 0	$ 0	$ 0
Internal Revenue Service (IRS) | Minimum
Income Taxes [Line Items]
Income tax, years under examination	2012
Federal
Income Taxes [Line Items]
Operating loss carry forwards	$ 10,400,000
Operating loss carry forwards, expiration year	2035
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carry forwards	$ 12,200,000
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