13. LONG-TERM DEBT

Long-term debt, which is based on original maturity, consisted of the following at December 31, 2017 and 2016:



	December 31,
	2017		2016
	(Dollars in thousands)
Subordinated debentures	$	92,785	$	92,785

FHLB Advances

There were no FHLB long-term advances outstanding as of December 31, 2017 and 2016. At December 31, 2017, our bank had FHLB advances available of approximately $1.47 billion, which was secured by certain real estate loans with a carrying value of $2.02 billion in accordance with the collateral provisions of the Advances, Pledge and Security Agreement with the FHLB. There was no interest expense on long-term FHLB advances in 2017, 2016 and 2015.

Subordinated Debentures

In October 2003, we created two wholly-owned statutory trusts, CPB Capital Trust II ("Trust II") and CPB Statutory Trust III ("Trust III"). Trust II issued $20.0 million in trust preferred securities bearing an interest rate of three-month LIBOR plus 2.85% and maturing on October 7, 2033. The principal assets of Trust II are $20.6 million of the Company's subordinated debentures with an identical interest rate and maturity as the Trust II trust preferred securities. Trust II issued $0.6 million of common securities to the Company.

Trust III issued $20.0 million in trust preferred securities bearing an interest rate of three-month LIBOR plus 2.85% and maturing on December 17, 2033. The principal assets of Trust III are $20.6 million of the Company's subordinated debentures with an identical interest rate and maturity as the Trust III trust preferred securities. Trust III issued $0.6 million of common securities to the Company.

In September 2004, we created a wholly-owned statutory trust, CPB Capital Trust IV ("Trust IV"). Trust IV issued $30.0 million in trust preferred securities bearing an interest rate of three-month LIBOR plus 2.45% and maturing on December 15, 2034. The principal assets of Trust IV are $30.9 million of the Company's subordinated debentures with an identical interest rate and maturity as the Trust IV trust preferred securities. Trust IV issued $0.9 million of common securities to the Company.

In December 2004, we created a wholly-owned statutory trust, CPB Statutory Trust V ("Trust V"). Trust V issued $20.0 million in trust preferred securities bearing an interest rate of three-month LIBOR plus 1.87% and maturing on December 15, 2034. The principal assets of Trust V are $20.6 million of the Company's subordinated debentures with an identical interest rate and maturity as the Trust V trust preferred securities. Trust V issued $0.6 million of common securities to the Company.

The trust preferred securities, the subordinated debentures that are the assets of Trusts II, III, IV and V and the common securities issued by Trusts II, III, IV and V are redeemable in whole or in part on any interest payment date on or after October 7, 2008 for Trusts II and III, and on or after December 15, 2009 for Trust IV and V, or at any time in whole but not in part within 90 days following the occurrence of certain events. Our obligations with respect to the issuance of the trust preferred securities constitute a full and unconditional guarantee by the Company of each trust's obligations with respect to its trust preferred securities. Subject to certain exceptions and limitations, we may elect from time to time to defer interest payments on the subordinated debentures, which would result in a deferral of distribution payments on the related trust preferred securities, for up to 20 consecutive quarterly periods without default or penalty.

At December 31, 2017, future principal payments on long-term debt based on final maturity are as follows (in thousands):



Year Ending December 31:
2018	$	—
2019	—
2020	—
2021	—
2022	—
Thereafter	92,785
Total	$	92,785