Trust Account and Fair Value Measurement (Details Textual) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Trust Account and Fair Value Measurement (Textual) | ||
| Proceeds of trust account, description | The proceeds of the Trust Account were invested in U.S. government treasury bills. U.S. government treasury bills held at June 30, 2019 mature in July 2019 and yield interest of approximately 2.4%. | The proceeds of the Trust Account were invested in U.S. government treasury bills. U.S. government treasury bills held at June 30, 2019 mature in July 2019 and yield interest of approximately 2.4%. |
| Maturity date, description | The Company withdrew approximately $1,910,000 from the Trust Account in order to pay 2018 actual and 2019 estimated income taxes (approximately $812,000) and franchise taxes (approximately $348,000) paid in installments in January 2019, April 2019 and May 2019) and to release the 2019 $750,000 allowed for working capital. | |
| US Treasury Securities [Member] | ||
| Trust Account and Fair Value Measurement (Textual) | ||
| Maturity date, description | The U.S. government treasury bills that matured in July 2019 were reinvested in U.S. government treasury bills maturing in August 2019. | |
| Public Offering and Private Placement [Member] | ||
| Trust Account and Fair Value Measurement (Textual) | ||
| Cash deposited into trust account | $ 300,000,000 |