Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Summary of Significant Accounting Policies [Abstract]

Schedule of Regulatory Assets and Liabilities [Text Block]

Regulatory assets and liabilities are comprised of the following:

(in thousands)	December 31,
	2018		2017
Assets:
Pension Benefits and Post-Retirement Benefits Other Than Pension	$	9,470	$	11,455
Unrecovered Income Taxes	75,763		66,631
Deferred revenue (included in Prepayments and Other Current Assets and Deferred Charges and Other Costs)	10,408		6,813
Other (included in Prepayments and Other Current Assets and Deferred Charges and Other Costs)	4,931		5,202
Total regulatory assets	$	100,572	$	90,101
Liabilities:
Other (included in Other Current Liabilities)	$	1,334	$	1,117
Unamortized Investment Tax Credits	1,057		1,133
Refunds to Customers (including Current Portion of Refund to Customers)	2,865		64
Unfunded Future Income Taxes (including Other Long-Term Liabilities)	67,725		58,384
Excess Accumulated Deferred Income Tax	29,611		30,937
Total regulatory liabilities	$	102,592	$	91,635

Components of Addition to Net Utility Plant [Table Text Block]

The components that comprise net additions to Utility Plant during the last three years ending December 31 are as follows:

(in thousands)	2018		2017		2016
Additions to Utility Plant:
Company Financed	$	54,504	$	51,543	$	66,339
Allowance for Funds Used During Construction	465		774		1,198
Subtotal – Utility Plant Increase to Rate Base	54,969		52,317		67,537
Advances from Others for Construction	2,526		1,479		350
Net Additions to Utility Plant	$	57,495	$	53,796	$	67,887

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

EARNINGS PER SHARE – The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share for the years ended December 31:

Years ended December 31,	2018		2017		2016
Numerator (in thousands)
Basic Net Income Applicable to Common Stock	$	16,685	$	25,016	$	23,349
Diluted Net Income Applicable to Common Stock	$	16,685	$	25,016	$	23,349
Denominator (in thousands)
Basic Weighted Average Shares Outstanding	11,914		11,540		11,009
Dilutive Effect of Stock Awards	151		222		219
Diluted Weighted Average Shares Outstanding	12,065		11,762		11,228
Earnings per Share
Basic Earnings per Share	$	1.40	$	2.17	$	2.12
Dilutive Effect of Stock Awards	0.02		0.04		0.04
Diluted Earnings per Share	$	1.38	$	2.13	$	2.08