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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
Lease
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Dec. 31, 2013
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Dec. 31, 2012
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| Commitments and Contingencies Disclosure [Abstract] | |||
| Number of leases | 3us-gaap_NumberOfPropertiesSubjectToGroundLeases | ||
| Expenses incurred for the properties listed | $ 0.4us-gaap_LeaseAndRentalExpense | $ 0.4us-gaap_LeaseAndRentalExpense | $ 0.4us-gaap_LeaseAndRentalExpense |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
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| X | ||||||||||
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- Definition
Number of separate real estate development properties located on land subject to ground leases. No definition available.
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