Securities sold under agreements to repurchase were $151.4 million at June 30, 2021, an decrease of $55.5 million from $206.9 million at December 31, 2020. The increase during the first six months of 2021 was primarily due to changes in business cash flow needs. All the transactions have overnight maturities with a weighted average rate of 0.15%.

The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral pledged by the Company would be used to settle the fair value of the repurchase agreement should the Company be in default (e.g., declare bankruptcy), the Company could cancel the repurchase agreement (i.e., cease payment of principal and interest), and attempt collection on the amount of collateral value in excess of the repurchase agreement fair value. The collateral is held by a third-party financial institution in the counterparty's custodial account. The counterparty has the right to sell or repledge the investment securities. For government entity repurchase agreements, the collateral is held by the Company in a segregated custodial account under a tri-party agreement. The Company is required by the counterparty to maintain adequate collateral levels. In the event the collateral fair value falls below stipulated levels, the Company will pledge additional securities. The Company closely monitors collateral levels to ensure adequate levels are maintained, while mitigating the potential of over- collateralization in the event of counterparty default.

Collateral pledged by class for repurchase agreements are as follows (in thousands):

	June 30, 2021		December 31, 2020
US Treasury securities and obligations of U.S. government corporations and agencies	$	54,438	$	37,423
Mortgage-backed securities: GSE: residential		96,957		168,480
Miscellaneous		—		1,034
Total	$	151,395	$	206,937

FHLB borrowings, before net premiums of $812,000, were $111.9 million and $94 million at June 30, 2021 and December 31, 2020, respectively. At June 30, 2021 the advances were as follows:

Advance		Term (in years)		Interest Rate	Maturity Date
$	5,000,000		7.0	2.55%	October 1, 2021
	5,000,000		5.0	2.71%	March 21, 2022
	5,000,000		1.0	0.00%	May 31, 2022
	5,000,000		3.0	2.41%	May 31, 2022
	5,000,000		3.0	2.12%	June 7, 2022
	5,000,000		3.0	2.12%	June 7, 2022
	5,000,000		8.0	2.40%	January 9, 2023
	5,000,000		4.0	2.44%	May 30, 2023
	5,000,000		3.5	1.51%	July 31, 2023
	5,000,000		3.5	0.77%	September 11, 2023
	10,000,000		5.0	1.45%	December 31, 2024
	5,000,000		5.0	0.91%	March 10, 2025
	6,940,511		10.0	2.64%	December 23, 2025
	5,000,000		10.0	1.14%	October 3, 2029
	5,000,000		10.0	1.15%	October 3, 2029
	5,000,000		10.0	1.12%	October 3, 2029
	10,000,000		10.0	1.39%	December 31, 2029
	15,000,000		10.0	1.41%	December 31, 2029