CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jun. 30, 2011
Current assets:
Cash and cash equivalents	$ 82,184	$ 60,039
Marketable securities	1,000	1,000
Receivables, net of allowance for doubtful accounts of $987 and $1,399, respectively	27,465	31,424
Inventories	24,625	28,379
Prepaid expenses and other	1,621	1,745
Total current assets	136,895	122,587
Marketable securities	777	980
Property, plant and equipment, net	29,123	30,195
Intangible assets, net	5,488	5,842
Total assets	172,283	159,604
Current liabilities:
Accounts payable	5,937	7,120
Progress payments, deferred revenue and billings in excess of costs and estimated earnings	7,455	4,706
Accrued salaries and wages	5,636	8,636
Other accrued liabilities	6,265	6,093
Income taxes payable	796	550
Current liabilities of discontinued operations	141	281
Total current liabilities	26,230	27,386
Other long-term liabilities	2,984	4,131
Commitments and contingencies
Equity:
Common stock, $0.10 par value per share: 40,000,000 shares authorized; 20,272,508 shares issued (19,985,631 at June 30, 2011); 18,019,620 shares outstanding (17,763,346 at June 30, 2011)	2,027	1,999
Additional paid-in capital	172,174	168,662
Accumulated deficit	(8,118)	(20,765)
Accumulated other comprehensive income:
Currency translation effects	215	1,197
Treasury stock, at cost, 2,252,888 shares (2,222,285 at June 30, 2011)	(26,675)	(26,373)
Total stockholders’ equity - Zygo Corporation	139,623	124,720
Noncontrolling interests	3,446	3,367
Total equity	143,069	128,087
Total liabilities and equity	$ 172,283	$ 159,604