Quarterly Financial Data - Summary of Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Quarterly Financial Data [Line Items]
Revenues	$ 409	$ 328	$ 521	$ 25,307	$ 292	$ 1,992	$ 592	$ 597	$ 26,565	$ 3,473	$ 2,143
Alimera [Member]
Quarterly Financial Data [Line Items]
Revenue recognized upon FDA approval of ILUVIEN				$ 25,000
Feasibility Study Agreement [Member]
Quarterly Financial Data [Line Items]
Revenues						$ 1,500