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Income Taxes - Components of Deferred Taxes (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Deferred Tax Assets: |  |
Accrued third party obligations, deductible for taxes upon economic performance | $ 15,153 | $ 14,473
Provision for doubtful accounts receivable | 497 | 1,041
Excess of financial statement over tax depreciation | 10,650 | 10,349
Deductible stock compensation expense, net | 21,758 | 18,910
Foreign currency translation adjustment | 57,207 | 44,519
Retained liability for cargo claims | 1,178 | 1,350
Total gross deferred tax assets | 106,443 | 90,642
Deferred Tax Liabilities: |  |
Unremitted foreign earnings, net of related foreign tax credits | 120,170 | 100,170
Total gross deferred tax liabilities | 120,170 | 100,170
Net deferred tax liabilities | $ 13,727 | $ 9,528

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