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Commitments and Contingencies - Schedule of Minimum Future Lease Payments Receivable (Parenthetical) (Detail) (USD $)
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|---|
| Leases [Abstract] | |||
| Uncertain tax positions | $ 304,000 | $ 251,000 | $ 198,000 |