Related Party Transactions (Details) - Directors - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Related Party Transactions
Common stock issued in lieu of board fees	66,954	66,915
Issuance of common stock for services	$ 0.1	$ 0.1

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration