Commitments And Contingencies (Details)		7 Months Ended	12 Months Ended
	Feb. 07, 2017 shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jan. 31, 2017 ft²
Commitments and Contingencies [Line Items]
Lease expiration date			Mar. 31, 2017
Operating lease, monthly expense			$ 19,000
Rent expense, including common area maintenance charges		$ 19,000	$ 200,000	$ 200,000
Private Placement [Member]
Commitments and Contingencies [Line Items]
Offering consideration		$ 7,147,000
Private Placement [Member] | Common Stock [Member]
Commitments and Contingencies [Line Items]
Shares sold | shares		2,996,000
Offering consideration		$ 3,000
MDB Capital Group, LLC [Member]
Commitments and Contingencies [Line Items]
Offering consideration		$ 1,000
MDB Capital Group, LLC [Member] | Common Stock [Member]
Commitments and Contingencies [Line Items]
Number of shares of common stock called by issuance of warrants, outstanding | shares		299,625
Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Area Of Lease | ft²					15,697
Subsequent Event [Member] | Private Placement [Member] | Common Stock [Member]
Commitments and Contingencies [Line Items]
Shares sold | shares	819,673