Acquisitions and Divestitures (Tables)

6 Months Ended

Jun. 30, 2018

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information [Table Text Block]

	Three Months Ended		Six Months Ended
	June 30, 2018
	(In thousands)
Total revenues		$52,771		$96,239
Net income attributable to common shareholders		$42,048		$76,851