CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Utility plant, at original cost (less accumulated depreciation - 2020 - $147,469,; 2019 - $136,588)	$ 559,561	$ 530,721
Current assets
Cash and cash equivalents	28	596
Accounts receivable (less allowance for doubtful accounts 2020 - $862; 2019-$264)	10,162	6,913
Income tax receivable	629	19
Unbilled operating revenues	1,166	1,211
Materials and supplies	1,535	1,264
Prepaid property taxes	1,891	1,954
Prepaid expenses and other	2,208	2,250
Total current assets	17,619	14,207
Other assets
Non-utility property (less accumulated depreciation - 2020- $865; 2019 - $790)	3,796	3,812
Other deferred assets	5,309	4,257
Operating lease right of use assets	460	480
Total other assets	9,565	8,549
Regulatory assets, net	6,473	6,891
Total assets	593,218	560,368
Stockholders' equity
Common stock	9,357	9,292
Preferred stock	0	0
Additional paid-in capital	103,463	101,811
Retained earnings	56,606	49,165
Total stockholders' equity	169,426	160,268
Long-term debt, net of current portion	142,333	144,156
Total stockholders' equity and long-term debt	311,759	304,424
Current liabilities
Lines of credit	26,813	7,500
Current portion of long-term debt	1,757	1,706
Accounts payable	6,341	8,176
Accrued expenses	3,414	3,113
Overdraft payable	105	15
Accrued interest	930	830
Income taxes payable	237	343
Customer and other deposits	2,060	1,970
OtherLiabilitiesCurrent	2,067	1,946
Total current liabilities	43,724	25,599
Commitments and contingencies (Note 11)
Deferred credits and other liabilities
Net advances for construction	4,578	5,421
OperatingLeaseLiabilityNoncurrent	432	450
Regulatory liabilities	21,681	22,246
Deferred investment tax credits	473	490
Deferred income taxes	50,313	52,259
Total deferred credits and other liabilities	77,477	80,866
Net contributions in aid of construction	160,258	149,479
Total Liabilities and Stockholders' Equity	$ 593,218	$ 560,368