Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS
UTILITY PLANT, at original cost	$ 294,656	$ 292,483
Plant acquisition adjustments	(2,891)	(2,904)
Accumulated depreciation	(51,265)	(50,040)
Net utility plant	240,500	239,539
OTHER PHYSICAL PROPERTY:
Net of accumulated depreciation of $226 in 2013 and $219 in 2012	769	776
CURRENT ASSETS:
Cash and cash equivalents	4,554	4,012
Accounts receivable, net of reserves of $315 in 2013 and $305 in 2012	3,437	4,038
Unbilled revenues	2,214	2,322
Materials and supplies inventories, at cost	755	728
Prepaid expenses	507	337
Deferred income taxes	215	208
Total current assets	11,682	11,645
OTHER LONG-TERM ASSETS:
Deferred debt expense	2,265	2,291
Notes receivable	330	338
Deferred regulatory assets	23,604	23,835
Restricted cash-compensating balance	500	500
Other assets	3,630	3,566
Total other long-term assets	30,329	30,530
Total Assets	283,280	282,490
COMMON STOCKHOLDERS' EQUITY:
Common stock, no par value, authorized 46,500,000 shares, issued and outstanding 12,950,755 shares in 2013 and 12,918,633 shares in 2012	79,878	79,299
Retained earnings	20,875	20,526
Total common stockholders' equity	100,753	99,825
PREFERRED STOCK, authorized 500,000 shares, no shares issued	0	0
LONG-TERM DEBT, excluding current portion	84,922	84,933
COMMITMENTS
CURRENT LIABILITIES:
Current portion of long-term debt	42	42
Accounts payable	865	1,121
Dividends payable	1,551	1,548
Accrued compensation and benefits	1,044	1,082
Accrued income taxes	282	96
Accrued interest	1,548	1,065
Other accrued expenses	555	520
Total current liabilities	5,887	5,474
DEFERRED CREDITS:
Customers' advances for construction	13,104	12,949
Deferred income taxes	33,134	32,425
Deferred employee benefits	14,014	15,198
Other deferred credits	3,243	3,463
Total deferred credits	63,495	64,035
Contributions in aid of construction	28,223	28,223
Total Stockholders' Equity and Liabilities	$ 283,280	$ 282,490