6. Debt

	As of Sep. 30, 2020			As of Dec. 31, 2019

10.05% Senior Notes, Series C, due 2020	$	–		$	6,500
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			–
Committed Line of Credit, due 2022		–			7,672
Total long-term debt		119,870			104,042
Less discount on issuance of long-term debt		(184	)		(192	)
Less unamortized debt issuance costs		(2,857	)		(2,815	)
Less current maturities		–			(6,500	)
Long-term portion	$	116,829		$	94,535

In the third quarter of 2020, the Company entered into an agreement for a $50,000 unsecured, committed line of credit maturing in September 2022 at an interest rate of LIBOR plus 1.05% with an unused commitment fee and an interest rate floor. Simultaneously, the Company paid off and terminated all prior existing line of credit agreements.

On September 30, 2020, the Company entered into a note purchase agreement with certain institutional investors relating to the private placement of $30,000 aggregate principal amount of the Company’s senior notes. The senior notes bear interest at 3.24% per annum payable semiannually and mature on September 30, 2050. The senior notes are unsecured and unsubordinated obligations of the Company. The Company received net proceeds, after deducting issuance costs, of approximately $29,838. The net proceeds were used to refinance the $6,500 aggregate principal amount of the Company’s 10.05% Senior Notes, Series C, due September 30, 2020, to refinance line of credit borrowings incurred by the Company as interim financing for various capital projects, to fund acquisitions and for general corporate purposes.