Intangible Assets - Reconciliation of Intangible Assets (Detail) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Dec. 31, 2013 Patented Technologies [Member]	Jun. 30, 2013 Patented Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount at beginning of period						$ 38,941,000	$ 39,556,000
Foreign currency translation adjustments						1,933,000	(615,000)
Gross carrying amount at end of period						40,874,000	38,941,000
Accumulated amortization at beginning of period						(35,511,000)	(35,330,000)
Amortization expense	(194,000)	(194,000)	(386,000)	(386,000)		(386,000)	(769,000)
Foreign currency translation adjustments						(1,850,000)	588,000
Accumulated amortization at end of period						(37,747,000)	(35,511,000)
Net book value at end of period	$ 3,127,000		$ 3,127,000		$ 3,430,000	$ 3,127,000	$ 3,430,000