10 percent annual discount for estimated timing of cash flows.

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Summary of significant accounting policies.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Shares issuable for little or no cash consideration upon the satisfaction of certain conditions (contingently issuable shares) are considered outstanding common shares and included in the computation of basic Earnings Per Share as of the date that all necessary conditions have been satisfied (in essence, when issuance of the shares is no longer contingent). Outstanding common shares that are contingently returnable (that is, subject to recall) are treated in the same manner as contingently issuable shares. Contingently issuable shares include shares that (a) will be issued in the future upon the satisfaction of specified conditions, (b) have been placed in escrow and all or part must be returned if specified conditions are not met, or (c) have been issued but the holder must return all or part if specified conditions are not met. The number of contingently issuable shares is determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period.

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Significant Accounting Policies - Additional Information (Details) $ in Millions		3 Months Ended		9 Months Ended
	Apr. 12, 2017	Sep. 30, 2017 USD ($) shares	Sep. 30, 2016 shares	Sep. 30, 2017 USD ($) shares	Sep. 30, 2016 shares
Significant Accounting Policies [Line Items]
Discount rate future net revenues				10.00%
Conversion ratio	0.521562
Contingently issuable shares \| shares		4,100,000	0	4,100,000	0
Reserve Account for Interest Claims
Significant Accounting Policies [Line Items]
Restricted cash \| $		$ 400.0		$ 400.0