Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Accounts payable, trade	$ 388	$ 246
Accrued payroll, vacation and other employee expenses	1,829	1,240
Accrued Content Delivery business estimated working capital settlement and sale transaction expenses	1,473	0
Accrued Real-Time sale transaction expenses	0	1,767
Unrecognized income from research and development tax credits	101	566
Accrued income taxes	509	415
Dividend payable	346	60
Other accrued expenses	183	227
Accounts payable and accrued expenses, Total	$ 4,829	$ 4,521