CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parentheticals)	7 Months Ended
Dec. 31, 2018 shares
Sale of units	22,000,000
Sale of Private Units	640,000

Sale of units, net of underwriters discount and offering costs.

No definition available.

Name:	ctac_SaleOfUnderwritingDiscountsAndOfferingExpenses
Namespace Prefix:	ctac_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration