Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.10.0.1
Fair Value Measurements (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Mar. 15, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments in money market fund held in Trust Account $ 328,319,857 $ 326,449,859 $ 325,000,000
Recurring (Member)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments in money market fund held in Trust Account 328,317,967 326,449,317  
Total 328,317,967 326,449,317  
Recurring (Member) | Quoted Prices in Active Markets (Level 1) [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments in money market fund held in Trust Account 328,317,967 326,449,317  
Total 328,317,967 326,449,317  
Recurring (Member) | Significant Other Observable Inputs (Level 2) [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments in money market fund held in Trust Account 0 0  
Total 0 0  
Recurring (Member) | Significant Other Unobservable Inputs (Level 3) [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investments in money market fund held in Trust Account 0 0  
Total $ 0 $ 0