Quarterly report pursuant to Section 13 or 15(d)

9. Fair Value of Financial Instruments (Details)

v3.19.2
9. Fair Value of Financial Instruments (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Level 1 [Member]    
Assets    
Restricted cash and investments held in trust $ 142,048,087 $ 141,307,307
Cash and cash equivalents 268,067 1,503,500
Total assets 142,316,154 142,810,807
Liabilities    
Total Liabilities 0 0
Total Assets and Liablilties 142,316,154 142,810,807
Level 2 [Member]    
Assets    
Restricted cash and investments held in trust 0 0
Cash and cash equivalents 0 0
Total assets 0 0
Liabilities    
Total Liabilities 0 0
Total Assets and Liablilties 0 0
Level 3 [Member]    
Assets    
Restricted cash and investments held in trust 0 0
Cash and cash equivalents 0 0
Total assets 0 0
Liabilities    
Total Liabilities 0 0
Total Assets and Liablilties $ 0 $ 0