Condensed Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) (Parenthetical)	3 Months Ended
Mar. 31, 2019 shares
Statement of Stockholders' Equity [Abstract]
Sale of net of underwriting discount and offering expenses	30,015,000
Sale of private placement warrants shares	8,503,000

Number of sale of units net of underwriting discount and offering expenses.

No definition available.

Name:	trne_SaleOfNetOfUnderwritingDiscountAndOfferingExpenses
Namespace Prefix:	trne_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration