CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Jun. 30, 2012
Current assets:
Cash and cash equivalents	$ 79,901	$ 84,053
Receivables, net of allowance for doubtful accounts of $694 and $760, respectively	31,574	31,601
Inventories	30,680	27,760
Prepaid expenses, prepaid taxes and other current assets	5,875	2,851
Revenue recognized in excess of billings on uncompleted contracts	5,265	2,371
Deferred income taxes	11,874	8,004
Total current assets	165,169	156,640
Marketable securities	688	729
Property, plant and equipment, net	33,926	33,694
Deferred income taxes	13,760	13,760
Intangible assets, net	4,783	5,198
Total assets	218,326	210,021
Current liabilities:
Accounts payable	6,931	9,613
Progress payments and deferred revenue	4,989	5,482
Billings in excess of costs and estimated earnings on uncompleted contracts	7,807
Accrued salaries and wages	3,351	6,198
Other accrued expenses	5,263	7,234
Income taxes payable		416
Total current liabilities	28,341	28,943
Deferred income taxes	2,580	2,580
Other long-term liabilities	5,181	2,518
Total liabilities	36,102	34,041
Commitments and contingencies
Equity:
Common stock, $0.10 par value per share: 40,000,000 shares authorized; 20,832,269 shares issued (20,499,861 at June 30, 2012); 18,509,482 shares outstanding (18,239,941 at June 30, 2012)	2,083	2,050
Additional paid-in capital	179,221	176,305
Retained earnings	27,586	22,253
Accumulated other comprehensive loss:
Currency translation effects	(523)	(186)
Treasury stock, at cost, 2,322,787 shares (2,259,920 at June 30, 2012)	(27,973)	(26,797)
Total shareholders’ equity - Zygo Corporation	180,394	173,625
Noncontrolling interests	1,830	2,355
Total equity	182,224	175,980
Total liabilities and equity	$ 218,326	$ 210,021