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Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
	Mar. 28, 2018	Dec. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization expense		$ 1,229	$ 981	$ 724	$ 756
DEXYCU [Member] | Icon Bioscience Inc [Member]
Finite-Lived Intangible Assets [Line Items]
Initial purchase price	$ 32,000
Annual amortization expense	$ 2,500

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Estimated Rate of Annual Amortization Expense

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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