CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jun. 30, 2012
Current assets:
Cash and cash equivalents	$ 77,347	$ 84,053
Receivables, net of allowance for doubtful accounts of $652 and $760, respectively	28,482	31,601
Inventories	29,928	27,760
Prepaid expenses, prepaid taxes and other current assets	6,062	2,851
Revenue recognized in excess of billings on uncompleted contracts	5,365	2,371
Deferred income taxes	11,337	8,004
Total current assets	158,521	156,640
Marketable securities	683	729
Property, plant and equipment, net	34,315	33,694
Deferred income taxes	13,766	13,760
Intangible assets, net	4,834	5,198
Total assets	212,119	210,021
Current liabilities:
Accounts payable	8,239	9,613
Progress payments and deferred revenue	5,813	5,482
Accrued salaries and wages	3,234	6,198
Other accrued expenses	6,385	7,234
Income taxes payable	386	416
Total current liabilities	24,057	28,943
Deferred income taxes	2,580	2,580
Other long-term liabilities	4,924	2,518
Total liabilities	31,561	34,041
Commitments and contingencies
Equity:
Common stock, $0.10 par value per share: 40,000,000 shares authorized; 20,798,084 shares issued (20,499,861 at June 30, 2012); 18,481,423 shares outstanding (18,239,941 at June 30, 2012)	2,080	2,050
Additional paid-in capital	178,369	176,305
Retained earnings	26,220	22,253
Accumulated other comprehensive income (loss):
Currency translation effects	75	(186)
Treasury stock, at cost, 2,316,661 shares (2,259,920 at June 30, 2012)	(27,875)	(26,797)
Total shareholders’ equity - Zygo Corporation	178,869	173,625
Noncontrolling interests	1,689	2,355
Total equity	180,558	175,980
Total liabilities and equity	$ 212,119	$ 210,021