Essential Utilities (WTRG) 10-Q 3 Aug 16 2016 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 20, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Entity Registrant Name	AQUA AMERICA INC
Entity Central Index Key	78,128
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		177,329,959

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Property, plant and equipment, at cost	$ 6,282,410	$ 6,088,011
Less: accumulated depreciation	1,458,923	1,399,086
Net property, plant and equipment	4,823,487	4,688,925
Current assets:
Cash and cash equivalents	4,923	3,229
Accounts receivable and unbilled revenues, net	99,718	99,146
Inventory, materials and supplies	11,714	12,414
Prepayments and other current assets	14,436	11,802
Assets held for sale	1,641	1,779
Total current assets	132,432	128,370
Regulatory assets	887,135	830,118
Deferred charges and other assets, net	30,313	28,878
Investment in joint venture	7,238	7,716
Goodwill	42,234	33,866
Total assets	5,922,839	5,717,873
Stockholders' equity:
Common stock at $.50 par value, authorized 300,000,000 shares, issued 180,235,772 and 179,363,660 as of June 30, 2016 and December 31, 2015	90,118	89,682
Capital in excess of par value	793,229	773,585
Retained earnings	978,124	930,061
Treasury stock, at cost, 2,911,624 and 2,819,569 shares as of June 30, 2016 and December 31, 2015	(70,944)	(68,085)
Accumulated other comprehensive income	636	687
Total stockholders' equity	1,791,163	1,725,930
Long-term debt, excluding current portion, net of debt issuance costs	1,798,067	1,743,612
Less: debt issuance costs	22,193	23,165
Long-term debt, excluding current portion	1,775,874	1,720,447
Commitments and contingencies (See Note 13)
Current liabilities:
Current portion of long-term debt	38,212	35,593
Loans payable	26,239	16,721
Accounts payable	40,651	56,452
Accrued interest	17,977	12,651
Accrued taxes	19,096	21,887
Other accrued liabilities	37,045	49,895
Total current liabilities	179,220	193,199
Deferred credits and other liabilities:
Deferred income taxes and investment tax credits	1,190,204	1,118,923
Customers' advances for construction	87,694	86,934
Regulatory liabilities	254,438	259,507
Other	109,450	100,498
Total deferred credits and other liabilities	1,641,786	1,565,862
Contributions in aid of construction	534,796	512,435
Total liabilities and equity	$ 5,922,839	$ 5,717,873

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 0.50	$ 0.50
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	180,235,772	179,363,660
Treasury stock, shares	2,911,624	2,819,569

Consolidated Statements Of Net

Consolidated Statements Of Net Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements Of Net Income [Abstract]
Operating revenues	$ 203,876	$ 205,760	$ 396,483	$ 396,086
Operating expenses:
Operations and maintenance	73,994	79,746	147,535	152,935
Depreciation	31,619	31,049	63,764	61,549
Amortization	528	924	978	1,773
Taxes other than income taxes	14,242	13,795	28,382	28,416
Total operating expenses	120,383	125,514	240,659	244,673
Operating income	83,493	80,246	155,824	151,413
Other expense (income):
Interest expense, net	20,115	18,900	39,968	37,565
Allowance for funds used during construction	(1,871)	(1,040)	(4,179)	(2,222)
Gain on sale of other assets	(121)	1	(328)	(168)
Equity loss in joint venture	229	84	478	798
Income before income taxes	65,141	62,301	119,885	115,440
Provision for income taxes	5,515	4,919	8,522	9,513
Net income	$ 59,626	$ 57,382	$ 111,363	$ 105,927
Net income per common share:
Basic	$ 0.34	$ 0.32	$ 0.63	$ 0.60
Diluted	$ 0.33	$ 0.32	$ 0.63	$ 0.60
Average common shares outstanding during the period:
Basic	177,288	177,084	177,196	176,987
Diluted	178,084	177,913	177,920	177,818
Cash dividends declared per common share	$ 0.178	$ 0.165	$ 0.356	$ 0.330

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements Of Comprehensive Income [Abstract]
Net income		$ 59,626	$ 57,382	$ 111,363	$ 105,927
Other comprehensive income, net of tax:
Unrealized holding gain (loss) on investments, net of tax expense (benefit) of $7 and $(11) for the three months and $3 and $29 for the six months ended June 30, 2016 and 2015, respectively		12	(21)	6	55
Reclassification of gain on sale of investment to net income, net of tax of $30 for the six months ended June 30, 2016	[1]			(57)
Comprehensive income		$ 59,638	$ 57,361	$ 111,312	$ 105,982
[1]	Amount of pre-tax gain of $87 reclassified from accumulated other comprehensive income to gain on sale of other assets on the consolidated statements of net income for the six months ended June 30, 2016.

Consolidated Statements Of Com6

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements Of Comprehensive Income [Abstract]
Income taxes arising from net unrealized holding gain on investments	$ 7	$ (11)	$ 3	$ 29
Income tax benefit arising from reclassification adjustment for loss reported in net income			30
Pre-tax loss of reclassification adjustment for loss reported in net income			$ 87

Consolidated Statements Of Capi

Consolidated Statements Of Capitalization - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Stockholders' equity:
Common stock, $.50 par value	$ 90,118	$ 89,682
Capital in excess of par value	793,229	773,585
Retained earnings	978,124	930,061
Treasury stock, at cost	(70,944)	(68,085)
Accumulated other comprehensive income	636	687
Total stockholders' equity	1,791,163	1,725,930
Long-term debt:
Long-term debt of subsidiaries	1,174,581	1,185,257
Total long-term debt	1,836,279	1,779,205
Current portion of long-term debt	38,212	35,593
Long-term debt, excluding current portion, net of debt issuance costs	1,798,067	1,743,612
Less: debt issuance costs	22,193	23,165
Long-term debt, excluding current portion	1,775,874	1,720,447
Total capitalization	3,567,037	3,446,377
Long-Term Debt Of Subsidiaries 0.00% To 0.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	4,802	5,148
Long-Term Debt Of Subsidiaries 1.00% To 1.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	16,347	20,811
Long-Term Debt Of Subsidiaries 2.00% To 2.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	22,063	19,167
Long-Term Debt Of Subsidiaries 3.00% To 3.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	296,045	297,275
Long-Term Debt Of Subsidiaries 4.00% To 4.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	486,909	487,093
Long-Term Debt Of Subsidiaries 5.00% To 5.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	214,634	221,435
Long-Term Debt Of Subsidiaries 6.00% To 6.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	52,975	52,964
Long-Term Debt Of Subsidiaries 7.00% To 7.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	33,418	33,762
Long-Term Debt Of Subsidiaries 8.00% To 8.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	14,288	14,502
Long-Term Debt Of Subsidiaries 9.00% To 9.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	27,100	27,100
Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]
Long-term debt:
Long-term debt of subsidiaries	6,000	6,000
Revolving Credit Agreement, Due 2021 [Member]
Long-term debt:
Notes payable to bank under revolving credit agreement, variable rate, due 2017	133,000	60,000
Bank notes at 1.921% and 1.975% due 2017 and 2018 [Member]
Long-term debt:
Unsecured notes payable	100,000	100,000
Notes at 3.57% and 3.59% due 2027 and 2030 [Member]
Long-term debt:
Unsecured notes payable	120,000	120,000
Notes Ranging From 4.62% To 4.87%, due 2016 through 2024 [Member]
Long-term debt:
Unsecured notes payable	144,400	144,400
Notes Ranging From 5.20% To 5.95%, due 2016 through 2037 [Member]
Long-term debt:
Unsecured notes payable	$ 164,298	$ 169,548

Consolidated Statements Of Cap8

Consolidated Statements Of Capitalization (Parenthetical) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Common stock, par value	$ 0.50	$ 0.50
Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]
Maturity date	2,018	2,018
Revolving Credit Agreement, Due 2021 [Member]
Maturity date	2,021	2,021
Bank notes at 1.921% due 2017 [Member]
Interest rate	1.921%	1.921%
Maturity date	2,017	2,017
Bank notes at 1.975% due 2018 [Member]
Interest rate	1.975%	1.975%
Maturity date	2,018	2,018
Notes at 3.57% due 2027 [Member]
Interest rate	3.57%	3.57%
Maturity date	2,027	2,027
Notes at 3.59% due 2030 [Member]
Interest rate	3.59%	3.59%
Maturity date	2,030	2,030
Minimum [Member] | Long-Term Debt Of Subsidiaries 0.00% To 0.99% [Member]
Interest rate	0.00%	0.00%
Maturity date	2,023	2,023
Minimum [Member] | Long-Term Debt Of Subsidiaries 1.00% To 1.99% [Member]
Interest rate	1.00%	1.00%
Maturity date	2,016	2,016
Minimum [Member] | Long-Term Debt Of Subsidiaries 2.00% To 2.99% [Member]
Interest rate	2.00%	2.00%
Maturity date	2,024	2,024
Minimum [Member] | Long-Term Debt Of Subsidiaries 3.00% To 3.99% [Member]
Interest rate	3.00%	3.00%
Maturity date	2,016	2,016
Minimum [Member] | Long-Term Debt Of Subsidiaries 4.00% To 4.99% [Member]
Interest rate	4.00%	4.00%
Maturity date	2,020	2,020
Minimum [Member] | Long-Term Debt Of Subsidiaries 5.00% To 5.99% [Member]
Interest rate	5.00%	5.00%
Maturity date	2,017	2,017
Minimum [Member] | Long-Term Debt Of Subsidiaries 6.00% To 6.99% [Member]
Interest rate	6.00%	6.00%
Maturity date	2,017	2,017
Minimum [Member] | Long-Term Debt Of Subsidiaries 7.00% To 7.99% [Member]
Interest rate	7.00%	7.00%
Maturity date	2,022	2,022
Minimum [Member] | Long-Term Debt Of Subsidiaries 8.00% To 8.99% [Member]
Interest rate	8.00%	8.00%
Maturity date	2,021	2,021
Minimum [Member] | Long-Term Debt Of Subsidiaries 9.00% To 9.99% [Member]
Interest rate	9.00%	9.00%
Maturity date	2,018	2,018
Minimum [Member] | Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]
Interest rate	10.00%	10.00%
Minimum [Member] | Notes Ranging From 4.62% To 4.87%, due 2016 through 2024 [Member]
Interest rate	4.62%	4.62%
Maturity date	2,016	2,016
Minimum [Member] | Notes Ranging From 5.20% To 5.95%, due 2016 through 2037 [Member]
Interest rate	5.20%	5.20%
Maturity date	2,016	2,016
Maximum [Member] | Long-Term Debt Of Subsidiaries 0.00% To 0.99% [Member]
Interest rate	0.99%	0.99%
Maturity date	2,033	2,033
Maximum [Member] | Long-Term Debt Of Subsidiaries 1.00% To 1.99% [Member]
Interest rate	1.99%	1.99%
Maturity date	2,035	2,035
Maximum [Member] | Long-Term Debt Of Subsidiaries 2.00% To 2.99% [Member]
Interest rate	2.99%	2.99%
Maturity date	2,031	2,031
Maximum [Member] | Long-Term Debt Of Subsidiaries 3.00% To 3.99% [Member]
Interest rate	3.99%	3.99%
Maturity date	2,047	2,047
Maximum [Member] | Long-Term Debt Of Subsidiaries 4.00% To 4.99% [Member]
Interest rate	4.99%	4.99%
Maturity date	2,054	2,054
Maximum [Member] | Long-Term Debt Of Subsidiaries 5.00% To 5.99% [Member]
Interest rate	5.99%	5.99%
Maturity date	2,043	2,043
Maximum [Member] | Long-Term Debt Of Subsidiaries 6.00% To 6.99% [Member]
Interest rate	6.99%	6.99%
Maturity date	2,036	2,036
Maximum [Member] | Long-Term Debt Of Subsidiaries 7.00% To 7.99% [Member]
Interest rate	7.99%	7.99%
Maturity date	2,027	2,027
Maximum [Member] | Long-Term Debt Of Subsidiaries 8.00% To 8.99% [Member]
Interest rate	8.99%	8.99%
Maturity date	2,025	2,025
Maximum [Member] | Long-Term Debt Of Subsidiaries 9.00% To 9.99% [Member]
Interest rate	9.99%	9.99%
Maturity date	2,026	2,026
Maximum [Member] | Long-Term Debt Of Subsidiaries 10.00% To 10.99% [Member]
Interest rate	10.99%	10.99%
Maximum [Member] | Notes Ranging From 4.62% To 4.87%, due 2016 through 2024 [Member]
Interest rate	4.87%	4.87%
Maturity date	2,024	2,024
Maximum [Member] | Notes Ranging From 5.20% To 5.95%, due 2016 through 2037 [Member]
Interest rate	5.95%	5.95%
Maturity date	2,037	2,037

Consolidated Statement Of Equit

Consolidated Statement Of Equity - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Dec. 31, 2015	$ 89,682	$ 773,585	$ 930,061	$ (68,085)	$ 687	$ 1,725,930
Net income			111,363			111,363
Other comprehensive loss, net of income tax benefit of $27					(51)	(51)
Dividends			(63,071)			(63,071)
Stock issued for acquisition (439,943 shares)	220	12,625				12,845
Sale of stock (22,281 shares)	11	659				670
Repurchase of stock (92,055 shares)				(2,859)		(2,859)
Equity compensation plan (221,449 shares)	111	(111)
Exercise of stock options (188,439 shares)	94	3,475				3,569
Stock-based compensation		2,200	(229)			1,971
Employee stock plan tax benefits		1,198				1,198
Other		(402)				(402)
Balance at Jun. 30, 2016	$ 90,118	$ 793,229	$ 978,124	$ (70,944)	$ 636	$ 1,791,163

Consolidated Statement Of Equ10

Consolidated Statement Of Equity (Parenthetical) $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)shares
Consolidated Statement Of Equity (Parenthetical) [Abstract]
Other Comprehensive loss, net of income tax | $	$ 27
Stock issued for acquisition, shares	439,943
Sale of stock, shares	22,281
Repurchase of stock, shares	92,055
Equity compensation plan, shares	221,449
Exercise of stock options, shares	188,439

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flow - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 111,363	$ 105,927
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	64,742	63,322
Deferred income taxes	5,051	5,392
Provision for doubtful accounts	2,101	2,233
Stock-based compensation	2,200	3,682
Gain on sale of utility system and market-based business unit	(1,782)
Gain on sale of other assets	(328)	(168)
Net change in receivables, inventory and prepayments	(4,130)	(17,430)
Net change in payables, accrued interest, accrued taxes and other accrued liabilities	(2,695)	2,319
Other	1,136	(8,259)
Net cash flows from operating activities	177,658	157,018
Cash flows from investing activities:
Property, plant and equipment additions, including the debt component of allowance for funds used during construction of $1,097 and $570	(168,587)	(150,284)
Acquisitions of utility systems and other, net	(5,626)	(25,919)
Release of funds previously restricted for construction activity		32
Net proceeds from the sale of utility system and other assets	6,439	290
Other	(45)	(1,296)
Net cash flows used in investing activities	(167,819)	(177,177)
Cash flows from financing activities:
Customers' advances and contributions in aid of construction	3,205	2,872
Repayments of customers' advances	(1,282)	(1,695)
Net proceeds of short-term debt	9,518	17,908
Proceeds from long-term debt	169,297	238,457
Repayments of long-term debt	(112,650)	(158,824)
Change in cash overdraft position	(15,338)	(16,047)
Proceeds from issuing common stock	670
Proceeds from exercised stock options	3,569	3,452
Stock-based compensation windfall tax benefits	1,198	1,320
Repurchase of common stock	(2,859)	(7,957)
Dividends paid on common stock	(63,071)	(58,396)
Other	(402)	(454)
Net cash flows used in financing activities	(8,145)	20,636
Net change in cash and cash equivalents	1,694	477
Cash and cash equivalents at beginning of period	3,229	4,138
Cash and cash equivalents at end of period	4,923	4,615
Non-cash investing activity:
Property, plant and equipment additions purchased at the period end, but not yet paid for	$ 20,863	$ 27,551

Consolidated Statements Of Ca12

Consolidated Statements Of Cash Flow (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements Of Cash Flow [Abstract]
Debt component of allowance for funds used during construction	$ 1,097	$ 570

Basis Of Presentation

Basis Of Presentation	6 Months Ended
	Jun. 30, 2016
Basis Of Presentation [Abstract]
Basis Of Presentation	Note 1 – Basis of Presentation  The accompanying consolidated balance sheets and statements of capitalization of Aqua America, Inc. and subsidiaries (the “Company”) at June 30, 2016 , the consolidated statements of net income and comprehensive income for the three and six months ended June 30, 2016 and 2015 the consolidated statements of cash flow for the six months ended June 30, 2016 and 2015 , and the consolidated statement of equity for the six months ended June 30, 2016 are unaudited, but reflect all adjustments, consisting of only normal recurring accruals, which are, in the opinion of management, necessary to present fairly the consolidated financial position, the consolidated changes in equity, the consolidated results of operations, and the consolidated cash flow for the periods presented. Because they cover interim periods, the statements and related notes to the financial statements do not include all disclosures and notes normally provided in annual financial statements and, therefore, should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 . The results of operations for interim periods may not be indicative of the results that may be expected for the entire year. The December 31, 2015 consolidated balance sheet data presented herein was derived from the Company’s December 31, 2015 audited consolidated financial statements, but does not include all disclosures and notes normally provided in annual financial statements. Certain prior period amounts have been reclassified, including debt issuance costs (see Note 15 - Recent Accounting Pronouncements ), to conform to the current period presentation. 

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2016
Goodwill [Abstract]
Goodwill	Note 2 – Goodwill  The following table summarizes the changes in the Company’s goodwill, by business segment:     Regulated  Segment Other Consolidated  Balance at December 31, 2015 $ 27,246 $ 6,620 $ 33,866  Goodwill acquired 10,095 - 10,095  Reclassification to utility plant acquisition adjustment (25) - (25)  Disposition - (996) (996)  Classified as assets held for sale - (547) (547)  Other (159) - (159)  Balance at June 30, 2016 $ 37,157 $ 5,077 $ 42,234  The reclassification of goodwill to utility plant acquisition adjustment results from a mechanism approved by the applicable utility commission. The mechanism provides for the transfer over time, and the recovery through customer rates, of goodwill associated with some acquisitions upon achieving specific objectives.  

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2016
Acquisitions [Abstract]
Acquisitions	Note 3 – Acquisitions  Pursuant to our strategy to grow through acquisitions, i n January 2016, the Company acquired Superior Water Company, Inc., which provides public water service to approximately 3,900 customers in portions of Berks, Chester, and Montgomery counties in Pennsylvania. The total purchase price for the utility system was $16,750 , which consisted of the issuance of 439,943 shares of the Company’s common stock and $3,905 in cash. The purchase price allocation for this acquisition consists primarily of acquired property, plant and equipment of $25,167 , contributions in aid of construction of $16,565 , and goodwill of $8,622 . Additionally, during 2016 to date, the Company has completed nine acquisitions of water and wastewater utility systems in various states. The total purchase price of these utility systems consisted of $1,721 in cash. The Company recorded goodwill on acquisitions completed during the first half of 2016 of $1,473 . The pro forma effect of the businesses acquired is not material either individually or collectively to the Company’s results of operations.  In April 2015, the Company acquired the water and wastewater utility system assets of North Maine Utilities located in the Village of Glenview, Illinois serving approximately 7,400 customers. The total purchase price consisted of $23,079 in cash. The purchase price allocation for this acquisition consists primarily of acquired property, plant and equipment. Additionally, in 2015, the Company completed 14 acquisitions of water and wastewater utility systems in various states. The total purchase price of these utility systems consisted of $5,210 in cash. 

Assets Held For Sale

Assets Held For Sale	6 Months Ended
	Jun. 30, 2016
Assets Held For Sale [Abstract]
Assets Held For Sale	Note 4 – Assets Held for Sale  In December 2015, the Company decided to sell a business unit within the Company’s market-based subsidiary, Aqua Resources, which provides liquid waste hauling and disposal services, and which was reported as assets held for sale in the Company’s consolidated balance sheets included in this report. During the second quarter of 2016, this business unit was sold for $3,400 in cash and resulted in a gain on sale of $537 . The gain on sale is reported as a reduction to operations and maintenance expense in the consolidated statements of net income. This business unit was included in “Other” in the Company’s segment information.  In the second quarter of 2016, the Company decided to market for sale business units within the Company’s market-based subsidiary, Aqua Resources, which install and test devices that prevent the contamination of potable water and repair water and wastewater systems. These business units are reported as assets held for sale in the Company’s consolidated balance sheets included in this report. These business units are included in “Other” in the Company’s segment information. 

Capitalization

Capitalization	6 Months Ended
	Jun. 30, 2016
Capitalization [Abstract]
Capitalization	Note 5 – Capitalization  In February 2016, the Company amended its unsecured revolving credit facility to extend the expiration from March 2017 to February 2021 , to increase the facility from $200,000 to $250,000 , and to add a fourth bank to the lending group. Funds borrowed under this facility are classified as long-term debt and are used to provide working capital as well as support for letters of credit for insurance policies and other financing arrangements. Interest under this facility is based at the Company’s option, on the prime rate, an adjusted Euro-Rate, an adjusted federal funds rate or at rates offered by the banks. A facility fee is charged on the total commitment amount of the agreement. 

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments	6 Months Ended
	Jun. 30, 2016
Fair Value Of Financial Instruments [Abstract]
Fair Value Of Financial Instruments	Note 6 – Fair Value of Financial Instruments The Company follows the Financial Accounting Standards Board’s (“FASB”) accounting guidance for fair value measurements and disclosures, which defines fair value and establishes a framework for using fair value to measure assets and liabilities. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:  · Level 1: unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access; · Level 2: inputs other than Level 1 that are observable, either directly or indirectly, such as quoted market prices in active markets for similar assets or liabilities, quoted prices for identical or similar assets or liabilities in non-active markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; or · Level 3: inputs that are unobservable and significant to the fair value measurement. The asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. There have been no changes in the valuation techniques used to measure fair value or asset or liability transfers between the levels of the fair value hierarchy for the quarter ended June 30 , 2016 . Financial instruments are recorded at carrying value in the financial statements and approximate fair value as of the dates presented. The fair value of these instruments is disclosed below in accordance with current accounting guidance related to financial instruments. The fair value of loans payable is determined based on its carrying amount and utilizing Level 1 methods and assumptions. As of June 30 , 2016 and December 31, 2015 , the carrying amount of the Company’s loans payable was $26,239 and $ 16,721 , respectively, which equates to their estimated fair value. The fair value of cash and cash equivalents, which is comprised of a money market fund, is determined based on the net asset value per unit utilizing Level 2 methods and assumptions. As of June 30 , 2016 and December 31, 2015 , the carrying amounts of the Company's cash and cash equivalents was $4,923 and $ 3,229 , respectively, which equates to their fair value. The carrying amounts and estimated fair values of the Company’s long-term debt is as follows:    June 30, December 31,  2016 2015  Carrying Amount $ 1,836,279 $ 1,779,205  Estimated Fair Value 2,144,322 1,905,393  The fair value of long-term debt has been determined by discounting the future cash flows using current market interest rates for similar financial instruments of the same duration utilizing Level 2 methods and assumptions. The Company’s customers’ advances for construction have a carrying value of $87,694 as of June 30 , 2016 , and $86,934 as of December 31, 2015 . Their relative fair values cannot be accurately estimated because future refund payments depend on several variables, including new customer connections, customer consumption levels, and future rate increases. Portions of these non-interest bearing instruments are payable annually through 2026 and amounts not paid by the respective contract expiration dates become non-refundable. The fair value of these amounts would, however, be less than their carrying value due to the non-interest bearing feature.

Net Income Per Common Share

Net Income Per Common Share	6 Months Ended
	Jun. 30, 2016
Net Income Per Common Share [Abstract]
Net Income Per Common Share	Note 7 – Net Income per Common Share Basic net income per common share is based on the weighted average number of common shares outstanding. Diluted net income per common share is based on the weighted average number of common shares outstanding and potentially dilutive shares. The dilutive effect of employee stock-based compensation is included in the computation of diluted net income per common share. The dilutive effect of stock-based compensation is calculated using the treasury stock method and expected proceeds upon exercise or issuance of the stock-based compensation. The treasury stock method assumes that the proceeds from the exercise of stock options are used to purchase the Company’s common stock at the average market price during the period. The following table summarizes the shares, in thousands, used in computing basic and diluted net income per common share:     Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Average common shares outstanding during the period for basic computation 177,288 177,084 177,196 176,987  Dilutive effect of employee stock-based compensation 796 829 724 831  Average common shares outstanding during the period for diluted computation 178,084 177,913 177,920 177,818   For the three and six months ended June 30, 2016 and 2015 , all of the Company’s employee stock options were included in the calculations of diluted net income per share as the calculated cost to exercise the stock options was less than the average market price of the Company’s common stock during these periods.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2016
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Note 8 – Stock-based Compensation Under the Company’s 2009 Omnibus Equity Compensation Plan , as amended as of February 27, 2014 (the “2009 Plan”), as approved by the Company’s shareholders to replace the 2004 Equity Compensation Plan (the “2004 Plan”), stock options, stock units, stock awards, stock appreciation rights, dividend equivalents, and other stock-based awards may be granted to employees, non-employee directors, and consultants and advisors. The 2009 Plan authorizes 6,250,000 shares for issuance under the plan. A maximum of 3,125,000 shares under the 2009 Plan may be issued pursuant to stock awards, stock units and other stock-based awards , subject to adjustment as provided in the 2009 Plan . During any calendar year, no individual may be granted (i) stock options and stock appreciation rights under the 2009 Plan for more than 500,000 shares of Company stock in the aggregate or (ii) stock awards, stock units or other stock-based awards under the 2009 Plan for more than 500,000 shares of Company stock in the aggregate, subject to adjustment as provided in the 2009 Plan. Awards to employees and consultants under the 2009 Plan are made by a committee of the Board of Directors of the Company, except that with respect to awards to the Chief Executive Officer, the committee recommends those awards for approval by the non-employee directors of the Board of Directors. In the case of awards to non-employee directors, the Board of Directors makes such awards . At June 30, 2016 , 3,8 91,288 shares were still available for issuance under the 2009 Plan. No further grants may be made under the 2004 Plan. Performance Share Units – A performance share unit (“PSU”) represents the right to receive a share of the Company’s common stock if specified performance goals are met over the three - year performance period specified in the grant, subject to exceptions through the respective vesting period, generally three years. Each grantee is granted a target award of PSUs, and may earn between 0 % and 200 % of the target amount depending on the Company’s performance against the performance goals. The following table provides compensation costs for stock-based compensation related to PSUs :     Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 967 $ 1,562 $ 1,492 $ 2,639  Income tax benefit 392 637 601 1,075 The following table summarizes the PSU transactions for the six months ended June 30, 2016 :     Number Weighted  of Average  Share Units Fair Value  Nonvested share units at December 31, 2015 424,858 $ 25.78  Granted 152,533 28.89  Performance criteria adjustment 38,657 25.96  Forfeited (12,127) 26.45  Share units vested in prior period and issued in current period 44,625 26.88  Share units issued (189,885) 23.25  Nonvested share units at June 30, 2016 458,661 $ 27.97  A portion of the fair value of PSUs was estimated at the grant date based on the probability of satisfying the market-based conditions using the Monte Carlo valuation method , which assesses probabilities of various outcomes of market conditions . The other portion of the fair value of the PSUs is based on the fair market value of the Company’s stock at the grant date, regardless of whether the market-based condition is satisfied. The per unit weighted-average fair value at the date of grant for PSUs granted during the six months ended June 30, 2016 and 2015 was $28.89 and $ 26.54 , respectively. The fair value of each PSU grant is amortized monthly into compensation expense on a straight-line basis over their respective vesting periods, generally 36 months. The accrual of compensation costs is based on our estimate of the final expected value of the award, and is adjusted as required for the portion based on the performance-based condition. The Company assumes that forfeitures will be minimal, and recognizes forfeitures as they occur, which results in a reduction in compensation expense. As the payout of the PSUs includes dividend equivalents, no separate dividend yield assumption is required in calculating the fair value of the PSUs. The recording of compensation expense for PSUs has no impact on net cash flows.  Restricted Stock Units – A restricted stock unit (“RSU”) represents the right to receive a share of the Company’s common stock. RSUs are eligible to be earned at the end of a specified restricted period, generally three years, beginning on the date of grant. The Company assumes that forfeitures will be minimal, and recognizes forfeitures as they occur, which results in a reduction in compensation expense. As the payout of the RSUs includes dividend equivalents, no separate dividend yield assumption is required in calculating the fair value of the RSUs. The following table provides compensation costs for stock-based compensation related to RSUs :    Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 296 $ 415 $ 464 $ 678  Income tax benefit 122 172 191 281  The following table summarizes the RSU transactions for the six months ended June 30, 2016 :     Number Weighted  of Average  Stock Units Fair Value  Nonvested stock units at December 31, 2015 88,353 $ 24.94  Granted 50,324 32.09  Stock units vested and issued (24,318) 23.37  Forfeited (2,458) 26.92  Nonvested stock units at June 30, 2016 111,901 $ 28.45  The per unit weighted-average fair value at the date of grant for RSUs granted during the six months ended June 30, 2016 and 2015 was $ 32.09 and $ 26.26 , respectively.  Stock Options – The following table provides the income tax benefit for stock-based compensation related to stock options granted in prior periods:    Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Income tax benefit $ 18 $ 11 $ 234 $ 115  For the six months ended June 30, 2016 and 2015, there were no compensation costs for stock-based compensation related to stock options, as stock options were fully amortized in 2013. Additionally, t here were no stock options granted during the six months ended June 30, 2016 or 2015 .  The following table summarizes stock option transactions for the six months ended June 30, 2016 :    Weighted Weighted  Average Average Aggregate  Exercise Remaining Intrinsic  Shares Price Life (years) Value  Outstanding at December 31, 2015 659,533 $ 16.62  Forfeited - -  Expired / Cancelled (3,436) 16.15  Exercised (188,439) 18.94  Outstanding and exercisable at June 30, 2016 467,658 $ 15.69 2.3 $ 9,339  Stock Awards – The following table provides compensation costs for stock-based compensation related to stock awards:      Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 131 $ 365 $ 244 $ 365  Income tax benefit 54 151 101 151  The following table summarizes stock award transactions for the six months ended June 30, 2016:     Number Weighted  of Average  Stock Awards Fair Value  Nonvested stock awards at December 31, 2015 - $ -  Granted 7,246 33.64  Vested (7,246) 33.64  Nonvested stock awards at June 30, 2016 - $ -  The per unit weighted-average fair value at the date of grant for stock awards granted during the six months ended June 30, 2016 and 2015 was $33.64 and $26.44 , respectively. 

Pension Plans And Other Postret

Pension Plans And Other Postretirement Benefits	6 Months Ended
	Jun. 30, 2016
Pension Plans And Other Postretirement Benefits [Abstract]
Pension Plans And Other Postretirement Benefits	Note 9 – Pension Plans and Other Postretirement Benefits The Company maintains a qualified defined benefit pension plan (the “Pension Plan”) , a nonqualified pension plan and other postretirement benefit plans for certain of its employees. The net periodic benefit cost is based on estimated values and an extensive use of assumptions about the discount rate, expected return on plan assets, the rate of future compensation increases received by the Company’s employees, mortality, turnover, and medical costs. The following tables provide the components of net periodic benefit cost:    Pension Benefits  Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Service cost $ 784 $ 925 $ 1,610 $ 1,850  Interest cost 3,251 3,222 6,536 6,444  Expected return on plan assets (4,215) (4,674) (8,481) (9,348)  Amortization of prior service cost 145 43 290 86  Amortization of actuarial loss 1,797 1,532 3,557 3,064  Settlement charge - - 3,028 -  Special termination benefit charge - - 302 -  Net periodic benefit cost $ 1,762 $ 1,048 $ 6,842 $ 2,096   Other  Postretirement Benefits  Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Service cost $ 253 $ 273 $ 508 $ 679  Interest cost 726 681 1,476 1,439  Expected return on plan assets (645) (731) (1,356) (1,461)  Amortization of prior service cost (137) (211) (274) (265)  Amortization of actuarial loss 220 309 487 663  Net periodic benefit cost $ 417 $ 321 $ 841 $ 1,055  Effective July 1, 2015, the Company added a permanent lump sum option to the form of benefit payments offered to participants of the qualified defined benefit pension plan and non-qualified retirement plans upon retirement or termination. During the first quarter of 2016, the lump sum payments paid to participants who elected this option for payments from the non-qualified retirement plans resulted in a settlement charge. The Company made cash contributions of $6,787 to its Pension Plan during the first six months of 201 6 , and intends to make cash contributions of $ 1 ,357 to the Pension Plan during the remainder of 2016 . 

Water And Wastewater Rates

Water And Wastewater Rates	6 Months Ended
	Jun. 30, 2016
Water And Wastewater Rates [Abstract]
Water And Wastewater Rates	Note 10 – Water and Wastewater Rates During the first six months of 201 6 , the Company’s operating divisions in Ohio, Texas, and Virginia were granted base rate increases designed to increase total operating revenues on an annual basis by $3,234 . Further, during the first six months of 201 6 , the Company’s operating divisions in Illinois, Pennsylvania (wastewater), and North Carolina received approval to bill infrastructure rehabilitation surcharges designed to increase total operating revenues on an annual basis by $1,365 . 

Taxes Other Than Income Taxes

Taxes Other Than Income Taxes	6 Months Ended
	Jun. 30, 2016
Taxes Other Than Income Taxes [Abstract]
Taxes Other Than Income Taxes	Note 11 – Taxes Other than Income Taxes The following table provides the components of taxes other than income taxes:    Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Property $ 6,928 $ 7,007 $ 13,113 $ 13,831  Capital stock 430 541 857 1,080  Gross receipts, excise and franchise 2,683 2,554 5,202 4,996  Payroll 2,299 2,075 5,635 5,353  Regulatory assessments 681 687 1,352 1,340  Other 1,221 931 2,223 1,816  Total taxes other than income $ 14,242 $ 13,795 $ 28,382 $ 28,416   

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2016
Segment Information [Abstract]
Segment Information	Note 12 – Segment Information The Company has identified ten operating segments and has one reportable segment named the “Regulated” segment. The reportable segment is comprised of eight operating segments for the Company’s water and wastewater regulated utility companies which are organized by the states where we provide these services. In addition, two segments are not quantitatively significant to be reportable and are comprised of the Company’s market-based activities: Aqua Resources, Inc. and Aqua Infrastructure, LLC. Aqua Resources provide s water and wastewater service through operating and maintenance contracts with municipal authorities and other parties in close proximity to our utility companies’ service territories ; offers, through a third party, water and wastewater line repair service and protection solutions to households ; and inspects, cleans and repairs storm and sanitary wastewater lines. In addition, Aqua Resources provided liquid waste hauling and disposal services in a business unit that the Company sold in the second quarter of 2016, and that was reported as assets held for sale in the Company’s consolidated balance sheets included in this report. Additionally, Aqua Resources installs and tests devices that prevent the contamination of potable water; designs and builds water and wastewater systems; and provides other market-based water and wastewater services in business units that, in the second quarter of 2016, the Company decided to market for sale. These business units are reported as assets held for sale in the Company’s consolidated balance sheets included in this report. Aqua Infrastructure provides non-utility raw water supply services for firms in the natural gas drilling industry. These two segments are included as a component of “Other” in the tables below. Also included in “Other” are corporate costs that have not been allocated to the Regulated segment and intersegment eliminations. Corporate costs include general and administrative expense, and interest expense.  The following table presents information about the Company’s reportable segment:    Three Months Ended Three Months Ended  June 30, 2016 June 30, 2015  Regulated Other Consolidated Regulated Other Consolidated  Operating revenues $ 198,086 $ 5,790 $ 203,876 $ 196,932 $ 8,828 $ 205,760  Operations and maintenance expense 69,676 4,318 73,994 71,248 8,498 79,746  Depreciation 32,214 (595) 31,619 30,948 101 31,049  Operating income 82,018 1,475 83,493 80,649 (403) 80,246  Interest expense, net 19,093 1,022 20,115 17,944 956 18,900  Allowance for funds used during construction 1,871 - 1,871 1,040 - 1,040  Income tax expense (benefit) 5,910 (395) 5,515 5,429 (510) 4,919  Net income (loss) 59,004 622 59,626 58,311 (929) 57,382   Six Months Ended Six Months Ended  June 30, 2016 June 30, 2015  Regulated Other Consolidated Regulated Other Consolidated  Operating revenues $ 384,092 $ 12,391 $ 396,483 $ 377,496 $ 18,590 $ 396,086  Operations and maintenance expense 137,001 10,534 147,535 138,266 14,669 152,935  Depreciation 64,420 (656) 63,764 61,386 163 61,549  Operating income 154,868 956 155,824 149,273 2,140 151,413  Interest expense, net 37,894 2,074 39,968 35,846 1,719 37,565  Allowance for funds used during construction 4,179 - 4,179 2,222 - 2,222  Income tax expense (benefit) 9,583 (1,061) 8,522 9,796 (283) 9,513  Net income (loss) 111,898 (535) 111,363 106,016 (89) 105,927  Capital expenditures 167,900 687 168,587 150,063 221 150,284      June 30, December 31,  2016 2015  Total assets:  Regulated $ 5,735,411 $ 5,541,335  Other 187,428 176,538  Consolidated $ 5,922,839 $ 5,717,873 

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2016
Commitments And Contingencies [Abstract]
Commitments And Contingencies	Note 13 – Commitments and Contingencies The Company is routinely involved in various disputes, claims, lawsuits and other regulatory and legal matters, including both asserted and unasserted legal claims, in the ordinary course of business. The status of each such matter, referred to herein as a loss contingency, is reviewed and assessed in accordance with applicable accounting rules regarding the nature of the matter, the likelihood that a loss will be incurred, and the amounts involved. As of June 30, 2016 , the aggregate amount of $12,337 is accrued for loss contingencies and is reported in the Company’s consolidated balance sheet as other accrued liabilities and other liabilities. These accruals represent management’s best estimate of probable loss (as defined in the accounting guidance) for loss contingencies or the low end of a range of losses if no single probable loss can be estimated. For some loss contingencies, the Company is unable to estimate the amount of the probable loss or range of probable losses. While the final outcome of these loss contingencies cannot be predicted with certainty, and unfavorable outcomes could negatively impact the Company, at this time in the opinion of management, the final resolution of these matters are not expected to have a material adverse effect on the Company’s financial position, results of operations or cash flows. Further, the Company has insurance coverage for certain of these loss contingencies, and as of June 30, 2016 , estimates that approximately $1,475 of the amount accrued for these matters are probable of recovery through insurance, which amount is also reported in the Company’s consolidated balance sheet as deferred charges and other assets, net.  In addition to the aforementioned loss contingencies, the Company self-insures its employee medical benefit program, and maintains stop-loss coverage to limit the exposure arising from these claims. The Company’s reserve for these claims totaled $1,496 at June 30, 2016 and represents a reserve for unpaid claim costs, including an estimate for the cost of incurred but not reported claims.  

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2016
Income Taxes [Abstract]
Income Taxes	Note 14 – Income Taxes During the six months ended June 30, 2016 , the Company utilized $ 10,056 of its Federal net operating loss (“NOL”) carryforward. In addition, during the six months ended June 30, 2016 , the Company ’s state NOL carryforward increased by $ 9,972 . As of June 30, 2016 , the balance of the Company’s Federal NOL was $148,220 . The Company believes its Federal NOL carryforward is more likely than not to be recovered and requires no valuation allowance. As of June 30, 2016 , the balance of the Company’s gross state NOL was $558,644 , a portion of which is offset by a valuation allowance because the Company does not believe the NOLs are more likely than not to be realized. The Company’s Federal and state NOL carryforwards begin to expire in 2032 and 2023 , respectively . The Company’s Federal and state NOL carryforwards are reduced by an unrecognized tax position, on a gross basis, of $ 63,852 and $89,651 , respectively. The amounts of the Company’s Federal and state NOL carryforwards prior to being reduced by the unrecognized tax positions were $ 212,072 and $648,295 respectively. The Company records its unrecognized tax benefit as a reduction to its deferred income tax liability.  In accordance with a 2012 settlement agreement with the Pennsylvania Public Utility Commission, Aqua Pennsylvania expenses, for tax purposes, qualifying utility asset improvement costs , which result s in a substantial reduction in income tax expense and greater net income and cash flows. The Company’s effective income tax rate for the second quarter of 201 6 and 201 5 , was 8.5% and 7.9% , respectively , and for the first six months of 2016 and 2015 was 7.1% and 8.2% , respectively .  As of June 30, 2016 , the total gross unrecognized tax benefit was $28,434 , of which $19,541 , if recognized, would affect the Company’s effective tax rate as a result of the regulatory treatment afforded for qualifying infrastructure improvements in Pennsylvania. At December 31, 201 5 , the Company had unrecognized tax benefits of $28,016 .  Accounting rules for uncertain tax positions specify that tax positions for which the timing of resolution is uncertain should be classified as long-term liabilities. Judgment is required in evaluating the Company’s uncertain tax positions and determining the provision for income taxes. Management believes that an adequate provision has been made for any adjustments that may result from tax examinations. Although the timing of income tax audit resolutions and negotiations with taxing authorities is highly uncertain, the Company does not anticipate a significant change to the total amount of unrecognized income tax benefits within the next 12 months. 

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2016
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	Note 15 – Recent Accounting Pronouncements  In March 2016, the FASB issued updated accounting guidance on simplifying the accounting for share-based payments, which includes several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The updated guidance is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years, with early adoption available. The Company is evaluating the requirements of the updated guidance to determine the impact of adoption.  In February 2016, the FASB issued updated accounting guidance on accounting for leases, which requires lessees to establish a right-of-use asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. For income statement purposes, leases will be classified as either operating or finance. Operating leases will result in straight-line expense while finance leases will result in a front-loaded expense pattern. The updated accounting guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption available. The Company is evaluating the requirements of the updated guidance to determine the impact of adoption.  In September 2015, the FASB issued updated accounting guidance on simplifying measurement-period adjustment in business combinations, which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize a measurement-period adjustment during the period in which it determines the amount of the adjustment. The Company adopted the provisions of this accounting standard, as required on January 1, 2016, and it did not have an impact on its results of operations or financial position. In April 2015, the FASB issued updated accounting guidance on simplifying the presentation of debt issuance costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability. Previously, debt issuance costs were presented in the balance sheet as a deferred charge. The Company adopted the provisions of this accounting standard as required on January 1, 2016. The adoption of this standard was applied retrospectively and resulted in the reclassification of $23,165 from deferred charges and other assets, net to debt issuance costs , which is reported as a reduction to long-term debt, in the December 31, 2015 consolidated balance sheet .  In August 2014, the FASB issued an accounting standard that will require management to assess an entity’s ability to continue as a going concern for each annual and interim reporting period and to provide related footnote disclosures in circumstances in which substantial doubt exists. The accounting standard is effective in the first annual reporting period ending after December 15, 2016 . The Company does not expect the provisions of this accounting standard to have an impact on its results of operations or financial position.  In May 2014, the FASB issued updated accounting guidance on recognizing revenue from contracts with customers, which outlines a single comprehensive model that an entity will apply to determine the measurement of revenue and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. The updated guidance also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract. In July 2015, the FASB approved a one year deferral to the original effective date of this guidance. The updated guidance is effective for reporting periods beginning after December 15, 201 7, and will be applied retrospectively . The Company is evaluating the requirements of the updated guidance to determine the impact of adoption. 

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill [Abstract]
Schedule Of Goodwill	   Regulated  Segment Other Consolidated  Balance at December 31, 2015 $ 27,246 $ 6,620 $ 33,866  Goodwill acquired 10,095 - 10,095  Reclassification to utility plant acquisition adjustment (25) - (25)  Disposition - (996) (996)  Classified as assets held for sale - (547) (547)  Other (159) - (159)  Balance at June 30, 2016 $ 37,157 $ 5,077 $ 42,234 

Fair Value Of Financial Instr29

Fair Value Of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2016
Fair Value Of Financial Instruments [Abstract]
Schedule Of Carrying Amounts And Estimated Fair Values Of Long-Term Debt	   June 30, December 31,  2016 2015  Carrying Amount $ 1,836,279 $ 1,779,205  Estimated Fair Value 2,144,322 1,905,393 

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2016
Net Income Per Common Share [Abstract]
Schedule Of Earnings Per Share	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Average common shares outstanding during the period for basic computation 177,288 177,084 177,196 176,987  Dilutive effect of employee stock-based compensation 796 829 724 831  Average common shares outstanding during the period for diluted computation 178,084 177,913 177,920 177,818  

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary Of PSU Transactions	   Number Weighted  of Average  Share Units Fair Value  Nonvested share units at December 31, 2015 424,858 $ 25.78  Granted 152,533 28.89  Performance criteria adjustment 38,657 25.96  Forfeited (12,127) 26.45  Share units vested in prior period and issued in current period 44,625 26.88  Share units issued (189,885) 23.25  Nonvested share units at June 30, 2016 458,661 $ 27.97  
Summary Of RSU Transactions	   Number Weighted  of Average  Stock Units Fair Value  Nonvested stock units at December 31, 2015 88,353 $ 24.94  Granted 50,324 32.09  Stock units vested and issued (24,318) 23.37  Forfeited (2,458) 26.92  Nonvested stock units at June 30, 2016 111,901 $ 28.45 
Summary Of Stock Option Transactions	   Weighted Weighted  Average Average Aggregate  Exercise Remaining Intrinsic  Shares Price Life (years) Value  Outstanding at December 31, 2015 659,533 $ 16.62  Forfeited - -  Expired / Cancelled (3,436) 16.15  Exercised (188,439) 18.94  Outstanding and exercisable at June 30, 2016 467,658 $ 15.69 2.3 $ 9,339 
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary Of Compensation Costs	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 967 $ 1,562 $ 1,492 $ 2,639  Income tax benefit 392 637 601 1,075 
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary Of Compensation Costs	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 296 $ 415 $ 464 $ 678  Income tax benefit 122 172 191 281 
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary Of Compensation Costs	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Income tax benefit $ 18 $ 11 $ 234 $ 115  
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary Of Compensation Costs	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Stock-based compensation within operations and maintenance expenses $ 131 $ 365 $ 244 $ 365  Income tax benefit 54 151 101 151 
Summary Of Nonvested Share Activity	   Number Weighted  of Average  Stock Awards Fair Value  Nonvested stock awards at December 31, 2015 - $ -  Granted 7,246 33.64  Vested (7,246) 33.64  Nonvested stock awards at June 30, 2016 - $ - 

Pension Plans And Other Postr32

Pension Plans And Other Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2016
Pension Plans And Other Postretirement Benefits [Abstract]
Components Of Net Periodic Benefit Costs	   Pension Benefits  Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Service cost $ 784 $ 925 $ 1,610 $ 1,850  Interest cost 3,251 3,222 6,536 6,444  Expected return on plan assets (4,215) (4,674) (8,481) (9,348)  Amortization of prior service cost 145 43 290 86  Amortization of actuarial loss 1,797 1,532 3,557 3,064  Settlement charge - - 3,028 -  Special termination benefit charge - - 302 -  Net periodic benefit cost $ 1,762 $ 1,048 $ 6,842 $ 2,096   Other  Postretirement Benefits  Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Service cost $ 253 $ 273 $ 508 $ 679  Interest cost 726 681 1,476 1,439  Expected return on plan assets (645) (731) (1,356) (1,461)  Amortization of prior service cost (137) (211) (274) (265)  Amortization of actuarial loss 220 309 487 663  Net periodic benefit cost $ 417 $ 321 $ 841 $ 1,055 

Taxes Other Than Income Taxes (

Taxes Other Than Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2016
Taxes Other Than Income Taxes [Abstract]
Components Of Taxes Other Than Income Taxes	   Three Months Ended Six Months Ended  June 30, June 30,  2016 2015 2016 2015  Property $ 6,928 $ 7,007 $ 13,113 $ 13,831  Capital stock 430 541 857 1,080  Gross receipts, excise and franchise 2,683 2,554 5,202 4,996  Payroll 2,299 2,075 5,635 5,353  Regulatory assessments 681 687 1,352 1,340  Other 1,221 931 2,223 1,816  Total taxes other than income $ 14,242 $ 13,795 $ 28,382 $ 28,416  

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2016
Segment Information [Abstract]
Company's Segment Information, Continuing Operations	   Three Months Ended Three Months Ended  June 30, 2016 June 30, 2015  Regulated Other Consolidated Regulated Other Consolidated  Operating revenues $ 198,086 $ 5,790 $ 203,876 $ 196,932 $ 8,828 $ 205,760  Operations and maintenance expense 69,676 4,318 73,994 71,248 8,498 79,746  Depreciation 32,214 (595) 31,619 30,948 101 31,049  Operating income 82,018 1,475 83,493 80,649 (403) 80,246  Interest expense, net 19,093 1,022 20,115 17,944 956 18,900  Allowance for funds used during construction 1,871 - 1,871 1,040 - 1,040  Income tax expense (benefit) 5,910 (395) 5,515 5,429 (510) 4,919  Net income (loss) 59,004 622 59,626 58,311 (929) 57,382   Six Months Ended Six Months Ended  June 30, 2016 June 30, 2015  Regulated Other Consolidated Regulated Other Consolidated  Operating revenues $ 384,092 $ 12,391 $ 396,483 $ 377,496 $ 18,590 $ 396,086  Operations and maintenance expense 137,001 10,534 147,535 138,266 14,669 152,935  Depreciation 64,420 (656) 63,764 61,386 163 61,549  Operating income 154,868 956 155,824 149,273 2,140 151,413  Interest expense, net 37,894 2,074 39,968 35,846 1,719 37,565  Allowance for funds used during construction 4,179 - 4,179 2,222 - 2,222  Income tax expense (benefit) 9,583 (1,061) 8,522 9,796 (283) 9,513  Net income (loss) 111,898 (535) 111,363 106,016 (89) 105,927  Capital expenditures 167,900 687 168,587 150,063 221 150,284  
Company's Segment Information, Assets	  June 30, December 31,  2016 2015  Total assets:  Regulated $ 5,735,411 $ 5,541,335  Other 187,428 176,538  Consolidated $ 5,922,839 $ 5,717,873  

Goodwill (Details)

Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)
Goodwill [Line Items]
Balance	$ 33,866
Goodwill acquired	10,095
Reclassification to utility plant acquisition adjustment	(25)
Disposition	(996)
Classified as assets held for sale	(547)
Other	(159)
Balance	42,234
Regulated [Member]
Goodwill [Line Items]
Balance	27,246
Goodwill acquired	10,095
Reclassification to utility plant acquisition adjustment	(25)
Other	(159)
Balance	37,157
Other [Member]
Goodwill [Line Items]
Balance	6,620
Goodwill acquired
Reclassification to utility plant acquisition adjustment
Disposition	(996)
Classified as assets held for sale	(547)
Other
Balance	$ 5,077

Acquisitions (Details)

Acquisitions (Details) $ in Thousands	1 Months Ended		6 Months Ended	12 Months Ended
	Jan. 31, 2016USD ($)customershares	Apr. 30, 2015USD ($)customer	Jun. 30, 2016USD ($)item	Dec. 31, 2015USD ($)item
Business Acquisition [Line Items]
Goodwill			$ 42,234	$ 33,866
North Main Utilities [Member]
Business Acquisition [Line Items]
Number of customers | customer		7,400
Cash Paid		$ 23,079
Superior Water Company, Inc. [Member]
Business Acquisition [Line Items]
Number of customers | customer	3,900
Total purchase price	$ 16,750
Shares issued for acquisition | shares	439,943
Cash Paid	$ 3,905
Acquired property, plant and equipment			25,167
Contributions in aid of construction			16,565
Goodwill	$ 8,622
Wastewater Utility Systems In Various States [Member]
Business Acquisition [Line Items]
Cash Paid			1,721	$ 5,210
Goodwill			$ 1,473
Number of acquisitions | item			9	14

Assets Held For Sale (Details)

Assets Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of business unit		$ 1,782
Aqua Resources [Member] | Disposal Group, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for sale of business unit	$ 3,400	$ 3,400
Gain on sale of business unit	$ 537

Capitalization (Details)

Capitalization (Details)	1 Months Ended
	Feb. 29, 2016USD ($)
Unsecured Revolving Credit Facility Due March 2017 [Member]
Debt Instrument [Line Items]
Face Amount	$ 200,000,000
Maturity Year	2017-03
Unsecured Revolving Credit Facility Due February 2021 [Member]
Debt Instrument [Line Items]
Face Amount	$ 250,000,000
Maturity Year	2021-02

Fair Value Of Financial Instr39

Fair Value Of Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value Of Financial Instruments [Abstract]
Loans payable	$ 26,239	$ 16,721
Cash and cash equivalents	4,923	3,229	$ 4,615	$ 4,138
Customers' advances for construction	$ 87,694	$ 86,934

Fair Value Of Financial Instr40

Fair Value Of Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 1,836,279	$ 1,779,205
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,144,322	$ 1,905,393

Net Income Per Common Share (Sc

Net Income Per Common Share (Schedule Of Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net Income Per Common Share [Abstract]
Average common shares outstanding during the period for basic computation	177,288	177,084	177,196	176,987
Dilutive effect of employee stock-based compensation	796	829	724	831
Average common shares outstanding during the period for diluted computation	178,084	177,913	177,920	177,818

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	221,449
Share Based Compensation	$ 2,200	$ 3,682
2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	0
2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	6,250,000
Maximum number of shares may be issued pursuant to stock awards, stock units and other stock-based awards	3,125,000
Maximum number of shares subject to grants to any one individual in any one year	500,000
Underlying stock option and restricted stock awards available for grant	3,891,288
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, in years	3 years
Weighted average fair value of stock awards granted	$ 28.89	$ 26.54
Amortization period of fair value of shares, in months	36 months
Granted	152,533
Performance Share Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award amount the grantee may earn	0.00%
Performance Share Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award amount the grantee may earn	200.00%
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted period	3 years
Weighted average fair value of stock awards granted	$ 32.09	$ 26.26
Granted	50,324
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	0	0
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock awards granted	$ 33.64	$ 26.44
Granted	7,246

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary Of PSU Transactions) (Details) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Share Units	221,449
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested stock units at beginning of period, Number of Share Units	424,858
Granted, Number of Share Units	152,533
Performance criteria adjustment, Number of Share Units	38,657
Forfeited, number of share units	(12,127)
Share units vested in prior period and issued in current period, Number of Share Units	44,625
Share unit awards issued, Number of Share Units	(189,885)
Nonvested stock units at end of period, number of share units	458,661
Nonvested stock units at beginning of period, weighted average fair value	$ 25.78
Granted, weighted average fair value	28.89	$ 26.54
Performance criteria adjustment, Weighted Average Fair Value	25.96
Forfeited, weighted average fair value	26.45
Stock units vested and issued, weighted average fair value	26.88
Share unit awards issued, Weighted Average Fair Value	23.25
Nonvested stock units at end of period, Weighted Average Fair Value	$ 27.97

Stock-Based Compensation (Sum44

Stock-Based Compensation (Summary Of RSU Transactions) (Details) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Share Units	221,449
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested stock units at beginning of period, Number of Share Units	88,353
Granted, Number of Share Units	50,324
Stock units vested and issued, number of stock units	(24,318)
Forfeited, number of share units	(2,458)
Nonvested stock units at end of period, number of share units	111,901
Nonvested stock units at beginning of period, weighted average fair value	$ 24.94
Granted, weighted average fair value	32.09	$ 26.26
Stock units vested and issued, weighted average fair value	23.37
Forfeited, weighted average fair value	26.92
Nonvested stock units at end of period, Weighted Average Fair Value	$ 28.45

Stock-Based Compensation (Sum45

Stock-Based Compensation (Summary Of Compensation Costs) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expense			$ 0	$ 0
Income tax benefit	$ 18,000	$ 11,000	234,000	115,000
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expense	967,000	1,562,000	1,492,000	2,639,000
Income tax benefit	392,000	637,000	601,000	1,075,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expense	296,000	415,000	464,000	678,000
Income tax benefit	122,000	172,000	191,000	281,000
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation within operations and maintenance expense	131,000	365,000	244,000	365,000
Income tax benefit	$ 54,000	$ 151,000	$ 101,000	$ 151,000

Stock-Based Compensation (Sum46

Stock-Based Compensation (Summary Of Stock Option Transactions) (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, Shares	(188,439)
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of period, Shares	659,533
Forfeited, Shares
Expired / Canelled, Shares	(3,436)
Exercised, Shares	(188,439)
Outstanding at end of period, Shares	467,658
Outstanding at beginning of period, Weighted Average Exercise Price | $ / shares	$ 16.62
Forfeited, Weighted Average Exercise Price | $ / shares
Expired / Canelled, Weighted Average Exercise Price | $ / shares	16.15
Exercised, Weighted Average Exercise Price | $ / shares	18.94
Outstanding at end of period, Weighted Average Exercise Price | $ / shares	$ 15.69
Outstanding at end of period, Weighted Average Remaining Life (years)	2 years 3 months 18 days
Outstanding at end of period, Aggregate Intrinsic Value | $	$ 9,339

Stock-Based Compensation (Sum47

Stock-Based Compensation (Summary Of Nonvested Share Activity – Restricted Stock) (Details) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Share Units	221,449
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested stock units at beginning of period, Number of Share Units
Granted, Number of Share Units	7,246
Stock units vested and issued, number of stock units	(7,246)
Nonvested stock units at end of period, number of share units
Nonvested stock units at beginning of period, weighted average fair value
Granted, weighted average fair value	33.64	$ 26.44
Stock units vested and issued, weighted average fair value	33.64
Nonvested stock units at end of period, Weighted Average Fair Value

Pension Plans And Other Postr48

Pension Plans And Other Postretirement Benefits (Narrative) (Details) - Pension Benefits [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Cash contributions made by the Company	$ 6,787
Cash contributions remainder of 2016	$ 1,357

Pension Plans And Other Postr49

Pension Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 784	$ 925	$ 1,610	$ 1,850
Interest cost	3,251	3,222	6,536	6,444
Expected return on plan assets	(4,215)	(4,674)	(8,481)	(9,348)
Amortization of prior service cost	145	43	290	86
Amortization of actuarial loss	1,797	1,532	3,557	3,064
Settlement charge			3,028
Special termination benefit charge			302
Net periodic benefit cost	1,762	1,048	6,842	2,096
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	253	273	508	679
Interest cost	726	681	1,476	1,439
Expected return on plan assets	(645)	(731)	(1,356)	(1,461)
Amortization of prior service cost	(137)	(211)	(274)	(265)
Amortization of actuarial loss	220	309	487	663
Net periodic benefit cost	$ 417	$ 321	$ 841	$ 1,055

Water And Wastewater Rates (Det

Water And Wastewater Rates (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)
Ohio, Texas, and Virginia [Member]
Water And Wastewater Rates [Line Items]
Base rate increase designed to increase total operating revenues on an annual basis	$ 3,234
Illinois, Pennsylvania, and North Carolina [Member]
Water And Wastewater Rates [Line Items]
Infrastructure rehabilitation surcharges	$ 1,365

Taxes Other Than Income Taxes51

Taxes Other Than Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Taxes Other Than Income [Line Items]
Taxes other than income taxes	$ 14,242	$ 13,795	$ 28,382	$ 28,416
Property [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	6,928	7,007	13,113	13,831
Capital Stock [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	430	541	857	1,080
Gross Receipts, Excise And Franchise [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	2,683	2,554	5,202	4,996
Payroll [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	2,299	2,075	5,635	5,353
Regulatory Assessments [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	681	687	1,352	1,340
Other [Member]
Taxes Other Than Income [Line Items]
Taxes other than income taxes	$ 1,221	$ 931	$ 2,223	$ 1,816

Segment Information (Narrative)

Segment Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2016segment
Segment Reporting Information [Line Items]
Operating Segments	10
Reportable Segments	1
Reportable Segment [Member]
Segment Reporting Information [Line Items]
Operating Segments	8
Not Quantitatively Significant [Member]
Segment Reporting Information [Line Items]
Operating Segments	2

Segment Information (Company's

Segment Information (Company's Segment Information, Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Operating revenues	$ 203,876	$ 205,760	$ 396,483	$ 396,086
Operations and maintenance expense	73,994	79,746	147,535	152,935
Depreciation	31,619	31,049	63,764	61,549
Operating income	83,493	80,246	155,824	151,413
Interest expense, net	20,115	18,900	39,968	37,565
Allowance for funds used during construction	1,871	1,040	4,179	2,222
Income tax expense (benefit)	5,515	4,919	8,522	9,513
Net income (loss)	59,626	57,382	111,363	105,927
Capital expenditures			168,587	150,284
Regulated [Member]
Segment Reporting Information [Line Items]
Operating revenues	198,086	196,932	384,092	377,496
Operations and maintenance expense	69,676	71,248	137,001	138,266
Depreciation	32,214	30,948	64,420	61,386
Operating income	82,018	80,649	154,868	149,273
Interest expense, net	19,093	17,944	37,894	35,846
Allowance for funds used during construction	1,871	1,040	4,179	2,222
Income tax expense (benefit)	5,910	5,429	9,583	9,796
Net income (loss)	59,004	58,311	111,898	106,016
Capital expenditures			167,900	150,063
Other [Member]
Segment Reporting Information [Line Items]
Operating revenues	5,790	8,828	12,391	18,590
Operations and maintenance expense	4,318	8,498	10,534	14,669
Depreciation	(595)	101	(656)	163
Operating income	1,475	(403)	956	2,140
Interest expense, net	1,022	956	2,074	1,719
Allowance for funds used during construction
Income tax expense (benefit)	(395)	(510)	(1,061)	(283)
Net income (loss)	$ 622	$ (929)	(535)	(89)
Capital expenditures			$ 687	$ 221

Segment Information (Company'54

Segment Information (Company's Segment Information, Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 5,922,839	$ 5,717,873
Other [Member]
Segment Reporting Information [Line Items]
Total assets	187,428	176,538
Regulated [Member]
Segment Reporting Information [Line Items]
Total assets	$ 5,735,411	$ 5,541,335

Commitments And Contingencies (

Commitments And Contingencies (Details) $ in Thousands	Jun. 30, 2016USD ($)
Commitments And Contingencies [Abstract]
Aggregate amount accrued for loss contingencies	$ 12,337
Amount probable of recovery through insurance	1,475
Insurance reserve for employee medical benefit program	$ 1,496

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Taxes [Line Items]
Unrecognized tax benefits	$ 28,434,000		$ 28,434,000		$ 28,016,000
Effective income tax rate	8.50%	7.90%	7.10%	8.20%
Unrecognized tax benefits that would impact effective tax rate	$ 19,541,000		$ 19,541,000
Federal [Member]
Income Taxes [Line Items]
Change in operating loss carryforward			(10,056,000)
Operating loss carryforwards	148,220,000		148,220,000
Operating loss carryforwards, valuation allowance	0		$ 0
Operating loss carryforwards, expiration beginning dates			Jan. 1, 2032
Unrecognized tax benefits	63,852,000		$ 63,852,000
Deferred tax assets, operating loss carryforwards	212,072,000		212,072,000
State [Member]
Income Taxes [Line Items]
Change in operating loss carryforward			9,972,000
Operating loss carryforwards	558,644,000		$ 558,644,000
Operating loss carryforwards, expiration beginning dates			Jan. 1, 2023
Unrecognized tax benefits	89,651,000		$ 89,651,000
Deferred tax assets, operating loss carryforwards	$ 648,295,000		$ 648,295,000

Recent Accounting Pronounceme57

Recent Accounting Pronouncements (Details) $ in Thousands	Dec. 31, 2015USD ($)
Recent Accounting Pronouncements [Abstract]
Reclassification of deferred charges and other assets to debt issuance costs	$ 23,165