Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Revenues Gross Profit And Operating Income By Segment [Table Text Block]

Revenues, gross profit, and operating income associated with our segments were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands)
Revenues
Electricity	$	250,332		$	232,823		$	489,083		$	450,118
Gas	138,700			150,266			262,911			289,522
Water	114,050			129,935			228,680			270,974
Total Company	$	503,082		$	513,024		$	980,674		$	1,010,614
Gross profit
Electricity	$	78,595		$	70,892		$	145,787		$	135,478
Gas	50,272			53,483			100,776			102,060
Water	48,993			45,330			88,522			95,370
Total Company	$	177,860		$	169,705		$	335,085		$	332,908
Operating income (loss)
Electricity	$	17,653		$	20,008		$	34,515		$	30,640
Gas	16,563			25,376			37,819			41,675
Water	16,686			14,177			25,421			32,253
Corporate unallocated	(14,080		)	(24,088		)	(30,891		)	(45,521		)
Total Company	36,822			35,473			66,864			59,047
Total other income (expense)	(5,255		)	(2,778		)	(10,236		)	(6,942		)
Income before income taxes	$	31,567		$	32,695		$	56,628		$	52,105

Revenues By Region [Table Text Block]

Revenues by region were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(in thousands)
United States and Canada	$	295,737	$	278,315	$	564,834	$	540,352
Europe, Middle East, and Africa	158,766		187,848		321,581		383,558
Other(1)	48,579		46,861		94,259		86,704
Total revenues	$	503,082	$	513,024	$	980,674	$	1,010,614

⁽¹⁾  The Other region includes our operations in Latin America and Asia Pacific.

Depreciation And Amortization Expense Associated With Segments [Table Text Block]

Depreciation and amortization expense associated with our segments was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(in thousands)
Electricity	$	5,774	$	7,771	$	11,085	$	15,033
Gas	4,503		4,968		8,747		9,889
Water	3,887		4,636		7,846		9,018
Corporate unallocated	926		1,432		1,790		1,541
Total Company	$	15,090	$	18,807	$	29,468	$	35,481