Interest Expense Interest Expense (Tables)

12 Months Ended

Dec. 31, 2018

Interest Expense [Abstract]

Interest Income and Interest Expense Disclosure [Table Text Block]

The following is a summary of interest expense included in the statements of operations:

	Year Ended December 31,
	2018			2017			2016
	(In thousands)
Interest expense	$	91,651		$	69,178		$	54,379
Amortization of deferred financing costs	4,661			3,011			1,478
Net loss (gain) on derivative financial instruments not designated as cash flow hedges:
Net unrealized	(926		)	(1,348		)	—
Net realized	(135		)	27			—
Capitalized interest	(20,804		)	(12,727		)	(4,076		)
Interest expense	$	74,447		$	58,141		$	51,781