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Stock-Based Compensation | 6 Months Ended
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Jun. 30, 2019
Stock-Based Compensation |
Stock-Based Compensation | 10 — Stock-Based Compensation Stock-based compensation was recognized as follows in the Condensed Statements of Operations:
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
|  | (unaudited) |  | (unaudited)
Cost of revenue |  | $ | 58,319 |  | $ | 69,239 |  | $ | 120,843 |  | $ | 137,498
General and administrative |  |  | 303,375 |  |  | 256,466 |  |  | 523,080 |  |  | 483,237
Sales and marketing |  |  | 87,168 |  |  | 78,277 |  |  | 169,299 |  |  | 161,893
Research and development |  |  | 19,574 |  |  | 38,099 |  |  | 37,567 |  |  | 75,780
Total |  | $ | 468,436 |  | $ | 442,081 |  | $ | 850,789 |  | $ | 858,408
As of June 30, 2019, we had $19,208 of unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of 0.4 years. As of June 30, 2019, we had $2,494,518 of unrecognized compensation cost related to unvested restricted stock units, which is expected to be recognized over a weighted-average period of 2.5 years. The following table presents a summary of our stock-based compensation activity for the six months ended June 30, 2019 (shares):
|  | Stock |  | Restricted
|  | Options |  | Stock Units
Outstanding beginning of period |  | 1,129,463 |  | 226,501
Awards granted |  | — |  | 8,780
Awards exercised/vested |  | (179,638) |  | (32,964)
Awards canceled |  | (750) |  | (13,246)
Outstanding end of period |  | 949,075 |  | 189,071

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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