Quarterly report pursuant to Section 13 or 15(d)

Contingent Liabilities (Narrative) (Details)

v3.8.0.1
Contingent Liabilities (Narrative) (Details)
3 Months Ended
Dec. 31, 2017
USD ($)
item
Other Commitments [Line Items]  
Loss contingency, range of possible loss, maximum $ 10,000,000
Number of class action lawsuits filed | item 1
Possible losses accrued $ 0
Intellectual Property Rights [Member]  
Other Commitments [Line Items]  
Total obligated upfront payments $ 500,000