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Commitments and Contingencies (Narrative) (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2015 USD ($) | Sep. 30, 2015 USD ($) ft² | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) ft² loan | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Royalty expense |  | $ 423 | $ 356 | $ 1,321 | $ 925 |
Subsequent Event [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Letter of credit to be issued to landlord | $ 1,250 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Royalty rates |  |  |  | 0.75% |  |
Royalty payments, quarterly |  | 50 |  | $ 50 |  |
Royalty agreement term |  |  |  | 3 years |  |
Maximum [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Letter of credit required to landlord |  |  |  | $ 1,250 |  |
Royalty rates |  |  |  | 5.00% |  |
Royalty payments, quarterly |  | $ 2,000 |  | $ 2,000 |  |
Royalty agreement term |  |  |  | 20 years |  |
Office, Manufacturing, Warehouse Facilities, And Equipment [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Operating leases expire at various terms |  |  |  | Dec. 31, 2030 |  |
Mason Lease [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Lease term period |  |  |  | 15 years |  |
Number of renewal options | loan |  |  |  | 3 |  |
Lease renewal option period |  |  |  | 5 years |  |
Initial annual base rent |  |  |  | $ 1,353 |  |
Lease rate increase, percentage |  | 2.00% |  | 2.00% |  |
Area of lease | ft² |  | 92 |  | 92 |  |
Project cost included in the construction of building |  |  |  | $ 13,507 |  | $ 3,941
Mason Lease [Member] | Leasehold Improvements [Member] |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Leases payable, amount |  | $ 750 |  | $ 750 |  |

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