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Significant Accounting Policies - Additional Information (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2016 shares | Dec. 31, 2016 USD ($) Segment Installment shares | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of operating segments | Segment |  | 1 |  |
Allowance for doubtful trade accounts receivable |  | $ 0 | $ 0 |
Goodwill impairment |  | 0 |  |
Shipping and other transportation costs |  | 321,093 | 221,974 | $ 154,025
Stock-based compensation |  | 298,535 | 341,554 | $ 657,730
Transfers into level 1 to level 2, liabilities |  | 0 | 0 |
Transfers into level 2 to level 1, liabilities |  | 0 | 0 |
Transfers into level 3, liabilities |  | 0 | 0 |
Transfers out of level 3, liabilities |  | $ 0 | $ 0 |
Common Stock |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Issuance of common stock upon initial public offering, net of issuance costs, shares | shares | 127,143 | 1,700,100 |  |
Preferred Redeemable Convertible Stock |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of annual installments for redemption | Installment |  | 2 |  |
Redemption description |  | At least one of the Company’s two largest shareholders would have needed to vote in favor of redemption to meet the 66 2/3% requirement. The Company obtained written commitments from these two shareholders committing that neither shareholder would vote in favor of redemption prior to January 1, 2018 |  |
Minimum | Preferred Redeemable Convertible Stock |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of outstanding senior preferred stockholders for redemption |  | 66.667% |  |
Property and Equipment, Other |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Property and equipment, estimated useful life |  | 3 years |  |

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- Definition Number of annual installments​ for redemption. + References No definition available. + Details
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- Definition Percentage of outstanding senior preferred stockholders for redemption. + References No definition available. + Details
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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524 + Details
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- Definition Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition The redemption terms of preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity. The redemption features of this capital stock are solely within the control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 + Details
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