Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Utility plant:
Gas plant	$ 5,681,417	$ 5,556,599
Less: accumulated depreciation	(2,029,322)	(1,973,098)
Acquisition adjustments, net	460	550
Construction work in progress	79,906	74,332
Net utility plant	3,732,461	3,658,383
Other property and investments	325,449	326,743
Restricted cash	0	821
Current assets:
Cash and cash equivalents	48,909	39,566
Accounts receivable, net of allowances	273,447	281,824
Accrued utility revenue	31,800	73,900
Income taxes receivable, net	13,997	21,853
Deferred income taxes, net	10,492	2,109
Deferred purchased gas costs	3,751	87,556
Prepaids and other current assets	98,445	99,975
Total current assets	480,841	606,783
Noncurrent assets:
Goodwill	138,257	143,160
Deferred income taxes	1,473	0
Deferred charges and other assets	468,381	478,625
Total noncurrent assets	608,111	621,785
Total assets	5,146,862	5,214,515
Capitalization:
Common stock, $1 par (authorized - 60,000,000 shares; issued and outstanding - 47,042,327 and 46,523,184 shares)	48,672	48,153
Additional paid-in capital	873,622	851,381
Accumulated other comprehensive income (loss), net	(48,750)	(50,175)
Retained earnings	678,288	639,164
Total Southwest Gas Corporation equity	1,551,832	1,488,523
Noncontrolling interest	(2,199)	(2,257)
Total equity	1,549,633	1,486,266
Redeemable noncontrolling interest	19,301	20,042
Long-term debt, less current maturities	1,521,683	1,637,592
Total capitalization	3,090,617	3,143,900
Current liabilities:
Current maturities of long-term debt	20,050	19,192
Short-term debt	0	5,000
Accounts payable	130,363	167,988
Customer deposits	72,744	71,546
Income taxes payable	4,271	0
Accrued general taxes	39,784	44,339
Accrued interest	16,159	16,468
Deferred income taxes	16,378	0
Deferred purchased gas costs	27,216	0
Other current liabilities	139,225	145,584
Total current liabilities	466,190	470,117
Deferred income taxes and other credits:
Deferred income taxes and investment tax credits	721,352	723,688
Accumulated removal costs	302,000	304,000
Other deferred credits and other long-term liabilities	566,703	572,810
Total deferred income taxes and other credits	1,590,055	1,600,498
Total capitalization and liabilities	$ 5,146,862	$ 5,214,515