Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands		3 Months Ended			12 Months Ended
	Aug. 08, 2018 USD ($)	Mar. 31, 2019 USD ($) Lease Clinic Segment shares	Mar. 31, 2019 CAD ($) Segment	Mar. 31, 2018	Dec. 31, 2018 USD ($) shares	Sep. 30, 2018 shares
Schedule Of Significant Accounting Policies [Line Items]
Revenue		$ 677,000
Type of Revenue [Extensible List]		us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Non-current receivables		$ 306,000			$ 294,000
Accounts receivable		910,000			$ 177,000
Inventory write-offs		0
Operating lease ROU asset		650,000
Operating lease liabilities		$ 745,000
Leases, initial term		12 months
Number of operating lease | Lease		1
Operating lease ROU asset amortization		$ 30,000
Number of stock options outstanding | shares		3,894,099			3,308,049
Modified employee stock options outstanding fair value	$ 10,300,000
Reclassification of stock based compensation liability classified stock options		$ 0
Number of operating segment | Segment		1	1
Number of reportable segment | Segment		1	1
HealthTech Connex, Inc.
Schedule Of Significant Accounting Policies [Line Items]
Number of canadian neuroplasticity clinics | Clinic		2
Employee and Non-employee Stock Options
Schedule Of Significant Accounting Policies [Line Items]
Number of stock options outstanding | shares						2,741,146
Minimum
Schedule Of Significant Accounting Policies [Line Items]
Effective income tax rate		50.00%	50.00%
Leasehold Improvements
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful life		5 years	5 years
Furniture and Fixtures
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful life		7 years	7 years
Equipment
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful life		15 years	15 years
Computer Software and Hardware | Minimum
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful life		3 years	3 years
Computer Software and Hardware | Maximum
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful life		5 years	5 years
Strategic Alliance Agreement | HealthTech Connex, Inc. | Heuro Canada Incorporation
Schedule Of Significant Accounting Policies [Line Items]
Non-current receivables		$ 300,000			$ 300,000
Accounts receivable		200,000			200,000
Current receivables		700,000
Contract assets		0			0
Contract liabilities		0			0
Revenue from Product Sales
Schedule Of Significant Accounting Policies [Line Items]
Accounts receivable		600,000
License Fees | Strategic Alliance Agreement
Schedule Of Significant Accounting Policies [Line Items]
Revenue		500,000			$ 500,000
Neurocatch Device | HealthTech Connex, Inc.
Schedule Of Significant Accounting Policies [Line Items]
Cost of goods sold per device			$ 600
Neurocatch Device | Strategic Alliance Agreement | HealthTech Connex, Inc.
Schedule Of Significant Accounting Policies [Line Items]
Revenue		700,000
Services Performed Using Neurocatch Device | Strategic Alliance Agreement | HealthTech Connex, Inc.
Schedule Of Significant Accounting Policies [Line Items]
Revenue		$ 25,000