| Disclosure of Financial Statement Details [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Disclosure of Financial Statement Details [Abstract] | |
Short Term Marketable Securities, Available for Sale | Short term marketable securities, consisting solely of debt securities were as follows: | | | | | | | | | | | | | | | | | | December 31, 2016 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Market Value | U.S. government agencies | $ | 22.2 |
| | $ | — |
| | $ | — |
| | $ | 22.2 |
| Corporate debt | 3.8 |
| | — |
| | — |
| | 3.8 |
| Commercial paper | 3.2 |
| | — |
| | — |
| | 3.2 |
| Total | $ | 29.2 |
| | $ | — |
| | $ | — |
| | $ | 29.2 |
|
| | | | | | | | | | | | | | | | | | December 31, 2015 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Market Value | U.S. government agencies | $ | 22.1 |
| | $ | — |
| | $ | — |
| | $ | 22.1 |
| Corporate debt | 4.9 |
| | — |
| | — |
| | 4.9 |
| Commercial paper | 2.1 |
| | — |
| | — |
| | 2.1 |
| Total | $ | 29.1 |
| | $ | — |
| | $ | — |
| | $ | 29.1 |
|
|
Accounts Receivable | Accounts Receivable | | | | | | | | | | December 31, | | 2016 | | 2015 | Accounts receivable | $ | 114.3 |
| | $ | 82.0 |
| Less allowance for doubtful accounts, sales returns and discounts | (12.6 | ) | | (7.9 | ) | Total | $ | 101.7 |
| | $ | 74.1 |
|
|
Inventory | Inventory | | | | | | | | | | December 31, | | 2016 | | 2015 | Raw materials | $ | 20.1 |
| | $ | 16.0 |
| Work-in-process | 2.3 |
| | 2.6 |
| Finished goods | 23.0 |
| | 16.6 |
| Total | $ | 45.4 |
| | $ | 35.2 |
|
|
Property and Equipment | Property and Equipment | | | | | | | | | | December 31, | | 2016 | | 2015 | Building (1) | $ | 6.0 |
| | $ | — |
| Furniture and fixtures (2) | 5.8 |
| | 3.7 |
| Computer equipment (2) | 22.7 |
| | 20.3 |
| Machinery and equipment (2) | 31.4 |
| | 25.6 |
| Leasehold improvements (2) | 25.6 |
| | 20.7 |
| Construction in progress (2) (3) | 65.1 |
| | 22.6 |
| Total | 156.6 |
| | 92.9 |
| Accumulated depreciation and amortization | (47.2 | ) | | (38.2 | ) | Property and equipment, net | $ | 109.4 |
| | $ | 54.7 |
|
|
Schedule of Intangible Assets and Goodwill | Goodwill and Intangible Assets Goodwill and intangible assets as of December 31, 2016 consisted of the following (in millions, except months): | | | | | | | | | | | | | | | | | | Weighted-Average Amortization Period (in months) | | Gross Amount | | Accumulated Amortization | | Intangible Assets, net | Intangible assets subject to amortization | | | | | | | | | In-process research and development (1) | | 51 | | $ | 0.2 |
| | $ | (0.1 | ) | | $ | 0.1 |
| Intangible assets not subject to amortization | | | | | | | | | Trademarks and trade names | | | | | | | | 0.1 |
| Goodwill | | | | | | | | 11.3 |
| Total | | | | | | | | $ | 11.4 |
|
(1) The In-process research and development intangible assets were placed in service in September 2015 will be amortized through November 2019. Goodwill and intangible assets as of December 31, 2015 consisted of the following (in millions, except months): | | | | | | | | | | | | | | | | | | Weighted-Average Amortization Period (in months) | | Gross Amount | | Accumulated Amortization | | Intangible Assets, net | Intangible assets subject to amortization | | | | | | | | | Developed technology | | 109 | | $ | 3.2 |
| | $ | (1.5 | ) | | $ | 1.7 |
| Customer-related intangible | | 70 | | 0.6 |
| | (0.4 | ) | | 0.2 |
| Covenants not-to-compete | | 70 | | 0.2 |
| | (0.1 | ) | | 0.1 |
| In-process research and development | | 51 | | 0.2 |
| | (0.1 | ) | | 0.1 |
| Total | | | | $ | 4.2 |
| | $ | (2.1 | ) | | $ | 2.1 |
| Intangible assets not subject to amortization | | | | | | | | | Trademarks and trade names | | | | | | | | 0.1 |
| Goodwill | | | | | | | | 3.7 |
| Total | | | | | | | | $ | 3.8 |
|
|
Accounts Payable and Accrued Liabilities | Accounts Payable and Accrued Liabilities | | | | | | | | | | December 31, | | 2016 | | 2015 | Accounts payable trade | $ | 24.5 |
| | $ | 19.0 |
| Accrued tax, audit, and legal fees | 4.5 |
| | 2.1 |
| Clinical trials | 1.1 |
| | 0.7 |
| Accrued rebates | 8.2 |
| | 4.0 |
| Accrued warranty | 9.8 |
| | 3.3 |
| Accrued other | 20.0 |
| | 9.8 |
| Total | $ | 68.1 |
| | $ | 38.9 |
|
|
Accrued Payroll And Related Expenses | Accrued Payroll and Related Expenses | | | | | | | | | | December 31, | | 2016 | | 2015 | Accrued paid time off | $ | 6.4 |
| | $ | 4.4 |
| Accrued wages, bonus and taxes | 24.5 |
| | 18.4 |
| Other accrued employee benefits | 2.5 |
| | 2.1 |
| Total | $ | 33.4 |
| | $ | 24.9 |
|
|
Accrued Warranty | Accrued Warranty Warranty costs are reflected in the consolidated statements of operations as product cost of sales. A reconciliation of our accrued warranty costs for the twelve months ended December 31, 2016 and 2015 were as follows: | | | | | | | | | | Years Ended December 31, | | 2016 | | 2015 | Beginning balance | $ | 3.3 |
| | $ | 1.3 |
| Charges to costs and expenses | 25.0 |
| | 9.0 |
| Costs incurred | (18.5 | ) | | (7.0 | ) | Ending balance | $ | 9.8 |
| | $ | 3.3 |
|
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