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Commitments and Contingencies (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) ft² | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) ft² | Jun. 30, 2015 USD ($)
Product Warranty [Abstract] |  |  |  |
Period of warranty |  |  | 12 months |
Change in warranty accrual [Roll Forward] |  |  |  |
Beginning accrued warranty and related costs | $ 431 | $ 392 | $ 497 | $ 802
Accruals for warranties issued | 4 | 411 | 23 | 585
Adjustments related to pre-existing warranties including expirations and changes in estimates | (64) | 42 | (131) | (252)
Cost of warranty repair | (41) | (177) | (59) | (467)
Ending accrued warranty and related costs | $ 330 | $ 668 | $ 330 | $ 668
Leases [Abstract] |  |  |  |
Area of property under long-term operating lease (in square feet) | ft² | 19,467 |  | 19,467 |
Additional years per lease option |  |  | 3 years |
Term of royalty agreement |  |  | 8 years |
Aggregate amount payable towards royalty | $ 7,000 |  | $ 7,000 |
Outstanding contractual obligations [Abstract] |  |  |  |
Less than 1 year | 220 |  | 220 |
1-3 years | 131 |  | 131 |
4-5 years | 51 |  | 51 |
More than 5 year | 73 |  | 73 |
Total | 475 |  | 475 |
Other Commitments, Fiscal Year Maturity [Abstract] |  |  |  |
Total | 1,913 |  | 1,913 |
Less than 1 year | 795 |  | 795 |
1-3 years | 994 |  | 994 |
4-5 years | 51 |  | 51 |
More than 5 years | 73 |  | 73 |
Royalty Agreement [Member] |  |  |  |
Other Commitments, Fiscal Year Maturity [Abstract] |  |  |  |
Total | 1,438 |  | 1,438 |
Less than 1 year | 575 |  | 575 |
1-3 years | $ 863 |  | $ 863 |

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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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