Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (6,121)	$ (6,061)
Adjustments to reconcile net loss from operations to net cash used in operating activities:
Stock-based compensation	954	249
Amortization	8	7
Depreciation	344	242
Net loss on sale of available-for-sale investments	60	14
Changes in assets and liabilities:
Accounts receivable	(595)	55
Cost, estimated earnings and billings, net on uncompleted contracts	451	0
Accounts payable	(46)	11
Other assets and liabilities	168	(1,191)
Income taxes payable	0	(190)
Net cash used in operating activities	(4,777)	(6,864)
Cash flows from investing activities:
Sale of available-for-sale investments	3,744	4,314
Maturities of held-to-maturity securities	3,090	3,188
Purchases of property and equipment	(241)	(706)
Net cash provided by investing activities	6,593	6,796
Cash flows from financing activities:
Payments for purchase of treasury stock	(1,283)	(117)
Net cash used in financing activities	(1,283)	(117)
Net change in cash and cash equivalents	533	(185)
Cash and cash equivalents at beginning of period	4,399	2,330
Cash and cash equivalents at end of period	4,932	2,145
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Income taxes paid	$ 0	$ 198