Convertible Debentures (Tables)

12 Months Ended

Dec. 31, 2017

Financial Instruments [Abstract]

Schedule of convertible debentures

The following table summarizes TransGlobe's outstanding long-term debt:

(000s)	December 31, 2017		December 31, 2016
Prepayment agreement	$	58,792	$	—
Reserves based lending facility	11,207		—
Note payable	—		5,581
	69,999		5,581
Current portion of long-term debt	—		5,581
	$	69,999	$	11,162

The following table reconciles the changes in TransGlobe's long-term debt:

(000s)
Balance at January 1, 2017	$	11,162
Increase in long-term debt - prepayment agreement	73,500
Increase in long-term debt - reserves based lending facility	10,209
Draws on facility	64
Repayment of long-term debt	(26,162		)
Amortization of deferred financing costs	329
Effect of movements in foreign exchange rates	897
Balance at December 31, 2017	$	69,999

Prepayment Agreement

(000s)	December 31, 2017
Prepayment agreement	$	75,000
Repayment of prepayment agreement	(15,000		)
Deferred financing costs	(1,208		)
	58,792
Current portion of long-term debt	—
	$	58,792

(000s)
Balance at December 31, 2015	$	63,848
Fair value adjustment	7,027
Foreign exchange adjustment	1,780
Balance at December 31, 2016	72,655
Repayment	(73,375		)
Fair value adjustment	151
Foreign exchange adjustment	569
Balance at December 31, 2017	$	—