Accrued Expenses - Additional Information (Detail) - USD ($)	Dec. 22, 2017	Mar. 31, 2018	Mar. 28, 2018	Jun. 30, 2017
Schedule Of Accrued Expenses [Line Items]
Retention bonuses paid under agreements	$ 319,000
Personnel costs		$ 1,144,000		$ 1,632,000
Closing share price	$ 1.045	$ 1.22	$ 1.07
Accrued professional fees		$ 1,282,000		590,000
Icon Bioscience Inc [Member]
Schedule Of Accrued Expenses [Line Items]
Accrued professional fees		858,000
RSU [Member]
Schedule Of Accrued Expenses [Line Items]
Restricted stock awards	305,616
Vesting period of equity awards	1 year
Accrual of Cash Retention Bonus Component [Member]
Schedule Of Accrued Expenses [Line Items]
Personnel costs		$ 0		$ 160,000