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Deferred Tax Assets and Liabilities Result from Differences in Timing of Recognition of Certain Income and Expense Items for Tax and Financial Accounting Purposes (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Deferred income tax assets: |  |
Net operating loss carryforwards | $ 148,499 | $ 99,021
Foreign tax credits | 27,240 | 19,359
Compensation | 24,902 | 20,668
Deferred revenue | 10,564 | 13,281
Tax basis in investments | 15,536 | 17,723
Other | 15,144 | 8,444
Gross deferred income tax assets | 241,885 | 178,496
Less: valuation allowance | (39,749) | (37,941)
Net deferred income tax assets | 202,136 | 140,555
Deferred income tax liabilities: |  |
Depreciation and amortization | (117,444) | (57,957)
Total deferred income tax liabilities | (117,444) | (57,957)
Net deferred income taxes | 84,692 | 82,598
Deferred income taxes / liabilities included in the balance sheet are: |  |
Deferred income tax asset - current | 47,593 | 34,342
Deferred income tax asset - noncurrent | 48,852 | 63,370
Deferred income tax liability - current | (753) | (174)
Deferred income tax liability - noncurrent | (11,000) | (14,940)
Net deferred income taxes | $ 84,692 | $ 82,598

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