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Taxation - Components of Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Current: |  |  |
Federal | $ 1,114 | $ 1,529 | $ 1,456
State | 334 | 425 | 402
Foreign | 836 | 471 | 482
Total current | 2,284 | 2,425 | 2,340
Deferred: |  |  |
Federal | 642 | 9 | 674
State | (78) | 1 | 95
Foreign | (84) | (133) | 0
Total deferred | 480 | (123) | 769
Income tax expense | $ 2,764 | $ 2,302 | $ 3,109

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