Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2013	Mar. 31, 2013
Tax Benefit To Correct Error In Deferred Tax Asset		$ 928
Additional Liability for Changes In Tax Positions	$ 44	$ 451

Amount of recognized additional liability for changes in tax positions.

No definition available.

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Namespace Prefix:	zigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration