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Consolidated Statements of Cash Flows (unaudited) - USD ($)
 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities    
Net income $ 1,238,163 $ 307,390
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 518,596 389,652
Loss on disposal of property and equipment   11,876
Stock based compensation 211,001 174,588
Provision for doubtful accounts receivable (29,009) (289)
Change in fair value of warrant liability (290,385) 687,065
Deferred rent (54,662) 72,546
Inventory write-offs to reserve 44,651  
Deferred tax expense (40,000)  
Changes in operating assets and liabilities:    
Trade accounts receivables (950,145) 40,438
Other receivables 94,432 64,048
Inventories (157,254) (331,414)
Prepaid expenses and other assets 403,928 (137,279)
Accounts payable and accrued liabilities 584,365 (232,585)
Deferred revenue (31,543)  
Net cash provided by operating activities 1,542,138 1,046,036
Cash flows from investing activities    
Purchase of property and equipment (873,220) (596,072)
Proceeds from sale of equipment   5,916
Acquisiton of ISP Optics, net of cash acquired (11,777,336)  
Net cash used in investing activities (12,650,556) (590,156)
Cash flows from financing activities    
Proceeds from exercise of stock options   2,808
Proceeds from sale of common stock from employee stock purchase plan 9,598 8,228
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 162,868 27,632
Net payments on loan payable   (32,216)
Payments on capital lease obligations (90,077) (62,764)
Net cash provided by (used in) financing activities 13,742,015 (56,312)
Effect of exchange rate on cash and cash equivalents 139,488 459,565
Change in cash and cash equivalents 2,773,085 859,133
Cash and cash equivalents, beginning of period 2,908,024 1,643,920
Cash and cash equivalents, end of period 5,681,109 2,503,053
Supplemental disclosure of cash flow information:    
Interest paid in cash 13,193 21,813
Income taxes paid 113,804 4,084
Supplemental disclosure of non-cash investing & financing activities:    
Purchase of equipment through capital lease arrangements 230,000  
Reclassification of warrant liability upon exercise 84,777  
Derecognition of liability associated with stock option grants 352,765 $ 143,125
Seller note issued to acquire ISP Optics, at fair value $ 6,455,559