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Income Taxes - Summary of Net Operating Loss and Research Credit Carryforwards (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2016 USD ($)
Domestic Country | Federal
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 112.3
Net operating losses subject to sections 382,383	Yes
Domestic Country | Federal | Research
Operating Loss Carryforwards [Line Items]
Research credit	$ 3.2
Research credit subject to sections 382,383	Yes
State and Local Jurisdiction | UTAH
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 209.5
Net operating losses subject to sections 382,383	No
State and Local Jurisdiction | UTAH | Research
Operating Loss Carryforwards [Line Items]
Research credit	$ 9.5
Research credit subject to sections 382,383	No
State and Local Jurisdiction | OKLAHOMA
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 14.1
Net operating losses subject to sections 382,383	Yes
Foreign (various jurisdictions)
Operating Loss Carryforwards [Line Items]
Net operating losses	$ 30.1
Net operating losses subject to sections 382,383	No
Minimum | Domestic Country | Federal
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2027
Minimum | Domestic Country | Federal | Research
Operating Loss Carryforwards [Line Items]
Research credit, expiration in year	2025
Minimum | State and Local Jurisdiction | UTAH
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2016
Minimum | State and Local Jurisdiction | UTAH | Research
Operating Loss Carryforwards [Line Items]
Research credit, expiration in year	2021
Minimum | State and Local Jurisdiction | OKLAHOMA
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2023
Minimum | Foreign (various jurisdictions)
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration date ranges	Various
Maximum | Domestic Country | Federal
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2033
Maximum | Domestic Country | Federal | Research
Operating Loss Carryforwards [Line Items]
Research credit, expiration in year	2032
Maximum | State and Local Jurisdiction | UTAH
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2024
Maximum | State and Local Jurisdiction | UTAH | Research
Operating Loss Carryforwards [Line Items]
Research credit, expiration in year	2029
Maximum | State and Local Jurisdiction | OKLAHOMA
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration in year	2033
Maximum | Foreign (various jurisdictions)
Operating Loss Carryforwards [Line Items]
Net operating losses, expiration date ranges	Various

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
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