4. Debt

For the three months ended March 31, 2021, the Company did not enter into any new long-term debt arrangements or modify its outstanding long-term debt, which is summarized in the table below.

	As of Mar. 31, 2021			As of Dec. 31, 2020

8.43% Senior Notes, Series D, due 2022	$	7,500		$	7,500
Variable Rate Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series 2008A, due 2029		12,000			12,000
3.00% Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series A of 2019, due 2036		10,500			10,500
3.10% Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series B of 2019, due 2038		14,870			14,870
3.23% Senior Notes, due 2040		15,000			15,000
4.00% - 4.50% York County Industrial Development Authority Exempt Facilities Revenue Bonds, Series 2015, due 2029 - 2045		10,000			10,000
4.54% Senior Notes, due 2049		20,000			20,000
3.24% Senior Notes, due 2050		30,000			30,000
Committed Line of Credit, due 2022		5,170			6,700
Total long-term debt		125,040			126,570
Less discount on issuance of long-term debt		(178	)		(181	)
Less unamortized debt issuance costs		(2,775	)		(2,816	)
Long-term portion	$	122,087		$	123,573