Immaterial Restatement of Previously Issued Financial Statements (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Current assets:
Deferred income taxes, net	$ 924	$ 14,040
Total assets	45,236	57,780
Stockholders' equity:
Accounts payable and accrued expenses	9,191	6,320
Total current liabilities	17,317	14,682
Other long-term liabilities	2,033	1,694
Total liabilities	24,238	21,223
Capital in excess of par value		210,207
Accumulated deficit	(189,265)	(173,595)
Total stockholders' equity	20,998	36,557	$ 40,454	$ 25,785
Total liabilities and stockholders' equity	$ 45,236	57,780
Scenario, Previously Reported [Member]
Current assets:
Deferred income taxes, net		14,133
Total assets		57,873
Stockholders' equity:
Accounts payable and accrued expenses		6,342
Total current liabilities		14,704
Other long-term liabilities		1,716
Total liabilities		21,267
Capital in excess of par value		210,456
Accumulated deficit		(173,795)
Total stockholders' equity		36,606
Total liabilities and stockholders' equity		57,873
Restatement Adjustment [Member]
Current assets:
Deferred income taxes, net		(93)
Total assets		(93)
Stockholders' equity:
Accounts payable and accrued expenses		(22)
Total current liabilities		(22)
Other long-term liabilities		(22)
Total liabilities		(44)
Capital in excess of par value		(249)
Accumulated deficit		200
Total stockholders' equity		(49)
Total liabilities and stockholders' equity		$ (93)