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Summary of Significant Accounting Policies (Accounts Receivable, Property, Plant and Equipment, and Net Loss Per Share) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($)
Property, Plant and Equipment [Line Items] |
Receivables percentage | 100.00%
Lab equipment |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 5 years
Computer Equipment |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Furniture and Fixtures |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Accounting Standards Update 2016-09 |
Property, Plant and Equipment [Line Items] |
Deferred income tax assets, net | $ 1.6

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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