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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income (loss) $ (1,293) $ 13 $ 1,160
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation and amortization 1,485 816 830
Loss on inventory write-down 0 17 0
Loss on disposal of property, plant and equipment 10 0 0
Stock-based compensation expense 496 676 511
Changes in operating assets and liabilities, net of effects of business acquisitions:      
Restricted cash 0 0 111
Accounts receivable (1,244) 926 (1,919)
Legal settlement receivable 0 0 1,538
Inventory (61) (1,055) (1,418)
Prepaid and other assets (35) (46) (259)
Accounts payable and accrued liabilities 125 (759) 1,109
Deferred revenue (61) 600 499
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES (578) 1,188 2,162
CASH FLOWS FROM INVESTING ACTIVITIES      
Purchase of property, plant and equipment (2,486) (1,926) (727)
Cash proceeds from sale of property, plant and equipment 23 0 0
Additions to intangible assets (163) 0 (6)
Payments for business acquisitions, net of cash acquired (7,314) (1,552) 0
NET CASH USED IN INVESTING ACTIVITIES (9,940) (3,478) (733)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from exercise of stock options 342 313 139
Repayments of long-term debt (3,184) 0 0
Proceeds from long-term debt 5,600 0 0
Shares repurchased 0 (745) (128)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 2,758 (432) 11
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (7,760) (2,722) 1,440
CASH AND CASH EQUIVALENTS, beginning of period 12,435 15,157 13,717
CASH AND CASH EQUIVALENTS, end of period 4,675 12,435 15,157
SUPPLEMENTAL CASH FLOW DISCLOSURES:      
Income taxes paid 9 152 58
Interest paid on long-term debt 107 0 0
NON-CASH INVESTING ACTIVITIES:      
Issuance of common stock for acquisition 1,899 0 0
Unpaid consideration related to acquisitions 0 181 0
Transfer of equipment to inventory 118 143 0
Property, plant and equipment financed through accounts payable $ 28 $ 0 $ 0