Summary of Significant Accounting Policies (Detail Textuals 1) |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Dec. 31, 2018
USD ($)
segment
|
Mar. 31, 2019
USD ($)
|
Mar. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Property, Plant and Equipment [Line Items] | |||||
| Restricted cash | $ 4,512 | $ 4,512 | $ 4,428 | $ 4,428 | |
| Fair value of advance under credit agreement | $ 3,176,824 | $ 13,932,858 | |||
| Property, plant and equipment, depreciation methods | straight-line method | ||||
| Number of reportable segments | segment | 1 | ||||
| Minimum | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Estimated useful life | 2 years | ||||
| Maximum | |||||
| Property, Plant and Equipment [Line Items] | |||||
| Estimated useful life | 3 years |
| X | ||||||||||
- Definition Fair value of the amount outstanding under the credit facility. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
- Definition Description of the methodology for computing depreciation for classes of depreciable assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
|
| X | ||||||||||
- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|