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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Cash flows from operating activities    
Net income $ 641,046 $ 1,238,163
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 1,625,674 518,596
Interest from amortization of debt costs 7,721  
Loss on disposal of property and equipment 3,315  
Stock based compensation 186,209 211,001
Bad debt expense (24,264) (29,009)
Change in fair value of warrant liability 194,632 (290,385)
Change in fair value of seller's note 71,505  
Deferred rent amortization (37,885) (54,662)
Inventory write-offs to reserves   44,651
Deferred tax expense   (40,000)
Changes in operating assets and liabilities:    
Trade accounts receivables 247,702 (950,145)
Other receivables (28,206) 94,432
Inventories (821,838) (157,254)
Prepaid expenses and other assets (3,094) 403,928
Accounts payable and accrued liabilities (444,276) 584,365
Deferred rent   (31,543)
Net cash provided by operating activities 1,618,241 1,542,138
Cash flows from investing activities    
Purchase of property and equipment (1,900,582) (873,220)
Acquisiton of ISP Optics, net of cash acquired   (11,777,336)
Net cash used in investing activities (1,900,582) (12,650,556)
Cash flows from financing activities    
Proceeds from exercise of stock options 103,701  
Proceeds from sale of common stock from employee stock purchase plan 19,080 9,598
Loan costs   (72,224)
Borrowings on loan payable   5,000,000
Proceeds from issuance of common stock under public equity placement   8,731,850
Proceeds from exercise of warrants, net of costs 539,318 162,868
Net payments on loan payable (556,499)  
Payments on capital lease obligations (119,424) (90,077)
Net cash provided by (used in) financing activities (13,824) 13,742,015
Effect of exchange rate on cash and cash equivalents (54,413) 139,488
Change in cash and cash equivalents (350,578) 2,773,085
Cash and cash equivalents, beginning of period 8,085,015 2,908,024
Cash and cash equivalents, end of period 7,734,437 5,681,109
Supplemental disclosure of cash flow information:    
Interest paid in cash 316,174 13,193
Income taxes paid 446,434 113,804
Supplemental disclosure of non-cash investing & financing activities:    
Purchase of equipment through capital lease arrangements 306,220 230,000
Reclassification of warrant liability upon exercise 685,132 84,777
Derecognition of liability associated with stock option grants $ 283,399 352,765
Seller note issued to acquire ISP Optics, at fair value   $ 6,455,559