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Unaudited Condensed Statements of Cash Flows - USD ($)
 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Cash flows from operating activities:    
Net income $ 314,970 $ 1,450,361
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation 222,459 236,357
Amortization 321,804 182,666
Fair market value adjustment - warrants   (460,289)
Stock-based compensation 249,888 112,168
Deferred tax liability 21,331  
Changes in operating assets and liabilities:    
Trade accounts receivable (2,358,425) (888,337)
Inventory (29,655) 42,509
Prepaid expenses and other assets (163,428) (93,246)
Accounts payable 82,616 827,453
Accrued bonus (549,601) (539,000)
Accrued liabilities 174,188 139,204
Deferred obligation under operating lease (61,477) (53,366)
Net cash provided by (used in) operating activities (1,775,330) 956,480
Cash flows from investing activities:    
Cash paid for acquisition (6,348,730)  
Purchases of property and equipment (169,931) (47,030)
Net cash used in investing activities (6,518,661) (47,030)
Cash flows from financing activities:    
Repayment of notes payable (721,896) (810,090)
Deferred costs related to initial public offering   (247,475)
Reversal of costs related to initial public offering 781  
Proceeds from exercise of stock options 436,695 72,300
Net cash used in financing activities (284,420) (985,265)
Net decrease in cash and cash equivalents (8,578,411) (75,815)
Cash and cash equivalents, beginning of period 45,161,403 5,335,913
Cash and cash equivalents, end of period 36,582,992 5,260,098
Supplemental disclosure of cash flow information    
Interest paid $ 60,934 99,769
Supplemental disclosure of non-cash investing and financing activities:    
Accretion of Series E, F, and G preferred redeemable convertible stock to redemption amount   1,072,332
Conversion of warrants   $ 249,215