Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013
Current assets:
Cash and cash equivalents	$ 25,096	$ 27,927
Accounts receivable, less allowance for doubtful accounts of $57 at December 31, 2013 and $70 at June 30, 2013	11,745	10,701
Inventories	3,856	2,844
Prepaid expenses and other current assets	1,408	2,324
Total current assets	42,105	43,796
Property, plant and equipment, net	2,921	3,102
Intangible assets, net	552	834
Other long-term assets, net	889	737
Total assets	46,467	48,469
Current liabilities:
Accounts payable and accrued expenses	7,990	7,671
Deferred revenue	6,303	8,383
Total current liabilities	14,293	16,054
Non-current liabilities:
Deferred revenue	1,462	1,924
Pension liability	3,099	2,901
Other	1,807	1,805
Total liabilities	20,661	22,684
Commitments and contingencies (Note 12)
Stockholders' equity:
Shares of common stock, par value $.01; 14,000,000 authorized; 8,981,655 and 8,807,766 issued and outstanding at December 31, 2013 and June 30, 2013, respectively	90	88
Capital in excess of par value	209,211	208,677
Accumulated deficit	(183,465)	(183,085)
Treasury stock, at cost; 37,788 at December 31, 2013 and June 30, 2013	(255)	(255)
Accumulated other comprehensive income	225	360
Total stockholders' equity	25,806	25,785
Total liabilities and stockholders' equity	$ 46,467	$ 48,469