CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Current assets:
Cash and cash equivalents	$ 15,750	$ 20,268
Short-term investments	2,423	0
Accounts receivable, net of allowance for doubtful accounts of $54 and $55 at March 31, 2017 and June 30, 2016, respectively	8,944	15,104
Inventories	2,939	3,495
Prepaid expenses and other current assets	1,855	1,061
Total current assets	31,911	39,928
Property and equipment, net	2,319	3,061
Deferred income taxes, net	761	924
Other long-term assets, net	1,356	1,323
Total assets	36,347	45,236
Current liabilities:
Accounts payable and accrued expenses	9,925	9,191
Deferred revenue	6,694	8,126
Total current liabilities	16,619	17,317
Long-term liabilities:
Deferred revenue	643	1,168
Pension liability	3,624	3,720
Other long-term liabilities	2,092	2,033
Total liabilities	22,978	24,238
Commitments and contingencies (Note 17)
Stockholders' equity:
Shares of common stock, par value $0.01; 14,000,000 authorized; 9,301,954, and 9,218,093 issued and outstanding at March 31, 2017 and June 30, 2016, respectively	93	92
Capital in excess of par value	211,666	210,971
Accumulated deficit	(197,425)	(189,265)
Treasury stock, at cost; 37,788 shares	(255)	(255)
Accumulated other comprehensive income (loss)	(710)	(545)
Total stockholders' equity	13,369	20,998
Total liabilities and stockholders' equity	36,347	45,236
Series Preferred Stock [Member]
Stockholders' equity:
Shares of preferred stock	0	0
Preferred Class A [Member]
Stockholders' equity:
Shares of preferred stock	$ 0	$ 0