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Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Long Term Debt [Abstract]

LONG-TERM DEBT

		2018				2017				2018				2017
Senior Credit Facility	US	$	—		US	$	—			$	—			$	—
Unsecured senior notes:
6.5% senior notes due 2021			165,625				248,625				226,113				312,601
7.75% senior notes due 2023			350,000				350,000				477,823				440,062
5.25% senior notes due 2024			351,104				400,000				479,331				502,928
7.125% senior notes due 2026			400,000				400,000				546,084				502,928
	US	$	1,266,729		US	$	1,398,625				1,729,351				1,758,519
Less net unamortized debt issue costs											(23,098	)			(28,082	)
										$	1,706,253			$	1,730,437

		Senior Credit Facility				Unsecured senior notes				Debt issue costs				Total
Balance December 31, 2016		$	—			$	1,933,993			$	(27,059	)		$	1,906,934
Changes from financing cash flows:
Proceeds from issue of senior notes			—				509,180				—				509,180
Redemption of senior notes			—				(571,975	)			—				(571,975	)
Payment of debt issue costs			—				—				(9,196	)			(9,196	)
			—				(62,795	)			(9,196	)			(71,991	)
Non-cash changes:
Loss on redemption of unsecured senior notes			—				9,021				—				9,021
Amortization of debt issue costs			—				—				8,173				8,173
Foreign exchange adjustment			—				(121,700	)			—				(121,700	)
Balance December 31, 2017			—				1,758,519				(28,082	)			1,730,437
Changes from financing cash flows:
Redemption of senior notes			—				(168,722	)			—				(168,722	)
Non-cash changes:
Gain on redemption of unsecured senior notes			—				(5,672	)			—				(5,672	)
Amortization of debt issue costs			—				—				4,984				4,984
Foreign exchange adjustment			—				145,226				—				145,226
Balance December 31, 2018		$	—			$	1,729,351			$	(23,098	)		$	1,706,253

Long-Term Debt Obligations

Long-term debt obligations at December 31, 2018 will mature as follows:

2021		$	226,113
2023			477,823
Thereafter			1,025,415
		$	1,729,351