Commitments and Contingencies - Additional Information (Detail)			1 Months Ended		12 Months Ended
	Jul. 01, 2017 ft² Renewal_Options	Apr. 30, 2016 USD ($)	Jul. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) ft²	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2017 USD ($)
Commitments and Contingencies [Line Items]
Irrevocable standby letter of credit					$ 150,000
Rent expense related to real estate and other operating leases charged to operations					442,000	$ 485,000	$ 494,000
Reimbursement of audit costs recorded as accrued expenses pending dispute resolution				$ 3,583,000	$ 4,224,000	3,583,000
Alimera [Member]
Commitments and Contingencies [Line Items]
Under-reported net profit share for 2014 based on independent audit findings		$ 136,000
Payment received based on audit findings and reimbursement of audit costs				354,000
Amount received for reimbursement of audit costs				204,000
Refund claim submitted to arbitration by Alimera			$ 354,000
Receipt of under-reported net profits recorded as deferred revenue pending dispute resolution				136,000		136,000		$ 136,000
Reimbursement of audit costs recorded as accrued expenses pending dispute resolution				$ 218,000		$ 218,000		$ 218,000
Watertown [Member]
Commitments and Contingencies [Line Items]
Area of leased office and laboratory space | ft²					13,650
Lease term expiration date					Apr. 30, 2019
Lease renewal option period					5 years
Malvern, U.K. [Member]
Commitments and Contingencies [Line Items]
Area of leased office and laboratory space | ft²					2,200
Lease term expiration date					Nov. 30, 2016
New lease term period					3 years
Lease termination, advance notice period					1 month
Liberty Corner [Member] | Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Lease term expiration date	Jun. 30, 2022
Lease renewal option period	5 years
Area of leased office space | ft²	3,000
Number of renewal options | Renewal_Options	2
Lease renewal rate at 95% of market rent at time of renewal	95.00%