Environmental Remediation (Detail) (USD $) In Thousands, unless otherwise specified		12 Months Ended				12 Months Ended
	Jun. 30, 2013 Entity	Jun. 30, 2013 Pulvair Site Group [Member]	Jun. 30, 2009 BASF Corporation [Member]	Jun. 30, 2013 BASF Corporation [Member]	Jun. 30, 2012 BASF Corporation [Member]	Jun. 30, 2013 Arsynco Inc. [Member]	Jun. 30, 2012 Arsynco Inc. [Member]
Site Contingency [Line Items]
Loss contingency, damages sought value		$ 1,700
Site contingency loss exposure not accrued, low estimate						9,000
Site contingency loss exposure not accrued, high estimate						10,800
Accrual for environmental loss contingencies						7,166	7,566
Partial reimbursement of environmental remediation costs previously expensed			550
Environmental remediation costs expensed in prior years			1,200
Future remediation costs receivable				$ 3,225	$ 3,405
Number of potentially responsible parties	150