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Commitments and Contingencies - Additional Information (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Operating Leased Assets [Line Items] | ||
| Operating leases, rent expense | $ 810,000us-gaap_LeaseAndRentalExpense | $ 830,000us-gaap_LeaseAndRentalExpense |
| Operating leases, terms of contract | 10 years | |
| Operating leases, agreements description | These agreements generally continue until the later of (a) ten years from the date of the agreements, and (b) the expiration of the patent rights relating to the devices covered by the agreements, when rights have been assigned by the individuals to the Company. | |
| Royalties expense | $ 1,300,000us-gaap_RoyaltyExpense | $ 892,000us-gaap_RoyaltyExpense |
| Minimum | ||
| Operating Leased Assets [Line Items] | ||
| Operating leases, terms of contract | 1 year | |
| 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
Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
This element represents the description of a lease related indemnification agreement including the nature of the indemnification, the maximum potential amount of future payments the indemnification agreement could be required to make under the agreement, the current carrying amount of the liability and the nature of any recourse provision that would enable the lessee guarantor) to recover from third parties any of the amounts paid under the agreement and any assets held either as collateral or by third parties that upon occurrence of any triggering event or condition under the indemnification agreement the guarantor can obtain and liquidate to recover all or a portion of the amounts paid under the indemnification agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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