Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net loss	$ (8,968)	$ (9,900)
Adjustments to reconcile net loss from operations to net cash used in operating activities:
Stock-based compensation	1,035	422
Amortization	25	48
Depreciation	524	351
Net loss on sale of available-for-sale investments	60	6
Changes in assets and liabilities:
Accounts receivable	(27)	(116)
Cost, estimated earnings and billings, net on uncompleted contracts	451	0
Accounts payable	36	(102)
Other assets and liabilities	405	(1,473)
Income taxes payable	2	(190)
Net cash used in operating activities	(6,457)	(10,954)
Cash flows from investing activities:
Sale of available-for-sale investments	3,744	4,315
Maturities of held-to-maturity securities	4,536	5,180
Purchases of property and equipment	(486)	(797)
Net cash provided by investing activities-continuing operations	7,794	8,698
Net cash provided by investing activities-discontinued operations	0	6,100
Net cash provided by investing activities	7,794	14,798
Cash flows from financing activities:
Payments for purchase of treasury stock	(1,283)	(117)
Proceeds from issuance of common stock	0	16
Net cash used in financing activities	(1,283)	(101)
Net change in cash and cash equivalents	54	3,743
Cash and cash equivalents at beginning of period	4,399	2,330
Cash and cash equivalents at end of period	4,453	6,073
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Income taxes paid	$ 0	$ 198