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Outstanding Long-Term Debt Obligations (Parenthetical) (Detail) (Average Rates For Capital Lease Obligations)
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Dec. 31, 2013
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Dec. 31, 2012
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Average Rates For Capital Lease Obligations
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| Schedule of Capitalization, Long-term Debt [Line Items] | ||
| Capital lease obligations average rate | 8.10% | 6.30% |