Reconciliation of Panama Statutory Federal Tax Rate to Consolidated Effective Tax Rate (Detail)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Panama federal statutory rate	25.00%	25.00%	25.00%
Non-Panama operations	(16.60%)	(5.20%)	(24.70%)
Valuation allowance for deferred tax assets	(18.80%)	14.20%	30.70%
Audit settlements and reserves	(0.80%)	2.90%	0.70%
Other	0.30%	0.80%	3.00%
Effective tax rate attributable to continuing operations	(10.90%)	37.70%	34.70%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements.

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