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Consolidated Statements of Cash Flows (unaudited) - USD ($)
 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash flows from operating activities    
Net income $ 1,338,987 $ 1,083,148
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 1,240,232 609,029
Interest from amortization of debt costs 3,861  
Loss on disposal of property and equipment   46,065
Stock based compensation 319,182 261,615
Provision for doubtful accounts receivable (29,551) (289)
Change in fair value of warrant liability 457,784 25,211
Change in fair value of seller's note 34,476  
Deferred rent (66,710) 43,153
Inventory write-offs to reserve 47,895  
Deferred tax expense (40,000)  
Changes in operating assets and liabilities:    
Trade accounts receivables (1,032,243) (133,884)
Other receivables 142,919 42,947
Inventories (253,179) (657,596)
Prepaid expenses and other assets 171,753 (241,450)
Accounts payable and accrued liabilities 595,624 157,877
Net cash provided by operating activities 2,931,030 1,235,826
Cash flows from investing activities    
Purchase of property and equipment (1,412,738) (755,800)
Proceeds from sale of equipment   5,916
Acquisiton of ISP Optics, net of cash acquired (11,777,336)  
Net cash used in investing activities (13,190,074) (749,884)
Cash flows from financing activities    
Proceeds from exercise of stock options   6,430
Proceeds from sale of common stock from employee stock purchase plan 19,632 22,903
Loan costs (72,224)  
Borrowings on loan payable 5,000,000  
Proceeds from issuance of common stock under public equity placement 8,730,209  
Proceeds from exercise of warrants, net of costs 584,679 391,082
Net payments on loan payable   (51,585)
Payments on capital lease obligations (141,874) (96,718)
Net cash provided by (used in) financing activities 14,120,422 272,112
Effect of exchange rate on cash and cash equivalents 62,119 460,612
Change in cash and cash equivalents 3,923,497 1,218,666
Cash and cash equivalents, beginning of period 2,908,024 1,643,920
Cash and cash equivalents, end of period 6,831,521 2,503,053
Supplemental disclosure of cash flow information:    
Interest paid in cash 91,525 30,101
Income taxes paid 344,820 2,056
Supplemental disclosure of non-cash investing & financing activities:    
Purchase of equipment through capital lease arrangements 230,000  
Reclassification of warrant liability upon exercise 509,771  
Derecognition of liability associated with stock option grants 352,765 $ 143,125
Seller note issued to acquire ISP Optics, at fair value $ 6,327,208