Income Taxes - Schedule of Income Tax Carryforwards (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 5.2
Net operating loss carryforwards, Year of expiration	No expiration date
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforwards	5.8
State and Local Jurisdiction [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Year of expiration	2015
State and Local Jurisdiction [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Tax Credit Carryforward, Year of expiration	2034
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	102.7
Tax Credit Carryforwards	2.9
Internal Revenue Service (IRS) [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2022
Tax Credit Carryforward, Year of expiration	2015
Internal Revenue Service (IRS) [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2034
Tax Credit Carryforward, Year of expiration	2034
California Franchise Tax Board [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	34.3
California Franchise Tax Board [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2015
California Franchise Tax Board [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2034
Other States [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 15.1
Other States [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2015
Other States [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, Year of expiration	2034