CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Current assets:
Cash and cash equivalents	$ 84,053	$ 60,039
Marketable securities (note 4)		1,000
Receivables, net of allowance for doubtful accounts of $760 and $1,399, respectively (notes 6 and 17)	31,601	31,424
Inventories (note 7)	27,760	28,379
Prepaid expenses and other current assets	2,851	1,690
Revenue recognized in excess of billings on uncompleted contracts	2,371
Deferred income taxes (note 15)	8,004	55
Total current assets	156,640	122,587
Marketable securities (note 4)	729	980
Property, plant and equipment, net (note 8)	33,694	30,195
Deferred income taxes (note 15)	13,760
Intangible assets, net (note 9)	5,198	5,842
Total assets	210,021	159,604
Current liabilities:
Accounts payable	9,613	7,120
Accrued progress payments and deferred revenue	5,482	4,706
Accrued salaries and wages	6,198	8,636
Other accrued expenses (note 10)	7,234	6,093
Income taxes payable (note 15)	416	550
Current liabilities of discontinued operations (note 20)		281
Total current liabilities	28,943	27,386
Deferred income taxes (note 15)	2,580
Other long-term liabilities	2,518	4,131
Total liabilities	34,041	31,517
Commitments and contingencies (note 11)
Equity (notes 13 and 14):
Common stock, $.10 par value per share: 40,000,000 shares authorized; 20,499,861 shares issued (19,985,631 in 2011); 18,239,941 shares outstanding (17,763,346 in 2011)	2,050	1,999
Additional paid-in capital	176,305	168,662
Retained earnings (Accumulated deficit)	22,253	(20,765)
Accumulated other comprehensive income (loss):
Currency translation effects	(186)	1,197
Less treasury stock, at cost; 2,259,920 common shares (2,222,285 in 2011)	26,797	26,373
Total stockholders’ equity - Zygo Corporation	173,625	124,720
Noncontrolling interests	2,355	3,367
Total equity	175,980	128,087
Total liabilities and equity	$ 210,021	$ 159,604