Borrowings

Federal Funds Purchased – The Bank had unsecured lines of credit totaling $92.0 million with correspondent banks for overnight borrowings at both December 31, 2016 and 2015. In general, interest rates on these lines approximate the federal funds target rate. We had no overnight borrowings under these credit facilities at December 31, 2016 and December 31, 2015.

Federal Home Loan Bank Borrowings – As of December 31, 2016 and 2015, the Bank had lines of credit with the FHLB totaling $513.7 million and $470.6 million, respectively, based on eligible collateral of certain loans. At December 31, 2016 there were no FHLB overnight borrowings compared to $52.0 million in FHLB overnight borrowings at a rate of 0.27% at December 31, 2015. On February 5, 2008, the Bank entered into a ten-year borrowing agreement under the same FHLB line of credit for $15.0 million at a fixed rate of 2.07%. On June 15, 2016, the Bank repaid the $15.0 million early and incurred a prepayment fee of $312 thousand recorded in interest expense. At December 31, 2016 and 2015, $513.7 million and $403.4 million, respectively, were remaining as available for borrowing from the FHLB, net of outstanding borrowings and an unused standby letter of credit totaling $241 thousand at December 31, 2015.

Federal Reserve Line of Credit – The Bank has a line of credit with the Federal Reserve Bank of San Francisco ("FRBSF") secured by certain residential loans. At December 31, 2016 and 2015, the Bank had borrowing capacity under this line totaling $43.1 million and $37.8 million, respectively, and had no outstanding borrowings with the FRBSF.

As part of an acquisition, Bancorp assumed two subordinated debentures due to NorCal Community Bancorp Trusts I and II (the "Trusts"), established for the sole purpose of issuing trust preferred securities on September 22, 2003 and December 29, 2005, respectively. The subordinated debentures were recorded at fair values totaling $4.95 million at acquisition date with contractual values totaling $8.2 million. The difference between the contractual balance and the fair value at acquisition date is accreted into interest expense over the lives of the debentures. Accretion on the subordinated debentures totaled $191 thousand, $210 thousand and $216 thousand in 2016, 2015 and 2014, respectively. Bancorp has the option to defer payment of the interest on the subordinated debentures for a period of up to five years, as long as there is no default on the subordinated debentures. In the event of interest deferral, dividends to Bancorp common stockholders are prohibited. The trust preferred securities were sold and issued in private transactions pursuant to an exemption from registration under the Securities Act of 1933, as amended. Bancorp has guaranteed, on a subordinated basis, distributions and other payments due on trust preferred securities totaling $8.0 million issued by the Trusts which have identical maturity, repricing and payment terms as the subordinated debentures.

The following is a summary of the contractual terms of the subordinated debentures due to the Trusts as of December 31, 2016:



(in thousands)
Subordinated debentures due to NorCal Community Bancorp Trust I on October 7, 2033 with interest payable quarterly, based on 3-month LIBOR plus 3.05%, repricing quarterly (3.93% as of December 31, 2016), redeemable, in whole or in part, on any interest payment date	$	4,124
Subordinated debentures due to NorCal Community Bancorp Trust II on March 15, 2036 with interest payable quarterly, based on 3-month LIBOR plus 1.40%, repricing quarterly (2.36% as of December 31, 2016), redeemable, in whole or in part, on any interest payment date	4,124
Total	$	8,248

Borrowings at December 31, 2016 and 2015 are summarized as follows:



	2016							2015
(dollars in thousands)	Carrying Value		Average Balance		Average Rate			Carrying Value		Average Balance		Average Rate
FHLB overnight borrowings	$	—	$	5,383	0.42	%		$	52,000	$	784	0.38	%
FHLB fixed-rate advances	$	—	$	6,803	6.59	%	¹	$	15,000	$	15,000	2.07	%
Subordinated debentures	$	5,586	$	5,493	7.80	%		$	5,395	$	5,288	7.94	%

¹Amount includes the impact of the $312 thousand prepayment fee in 2016 discussed above.