Junior Subordinated Debentures	12 Months Ended
Junior Subordinated Debentures	Dec. 31, 2014
Debt Disclosure [Abstract]
Junior Subordinated Debentures	Junior Subordinated Debentures As part of the Washington Banking Merger, the Company assumed trust preferred securities and junior subordinated debentures with a total fair value of $18.9 million at May 1, 2014. Washington Banking Master Trust, a statutory business trust, was a wholly-owned subsidiary of Washington Banking Company created for the exclusive purposes of issuing and selling capital securities and utilizing sale proceeds to acquire junior subordinated debt issued by Washington Banking Company. During 2007, the Master Trust issued $25.0 million of trust preferred securities with a 30-year maturity, callable after the fifth year by Washington Banking Company (now callable by Heritage). The trust preferred securities have a quarterly adjustable rate based upon the three-month London Interbank Offered Rate (“LIBOR”) plus 1.56%. The rate at December 31, 2014 was 1.82%. The weighted average rate of the junior subordinated debentures was 3.59% for the year ended December 31, 2014 and included the accretion of the discount established at the merger date which is amortized over the life of the trust preferred securities. On the Washington Banking Merger date of May 1, 2014, the Company acquired the Washington Banking Master Trust. The Trust retained the Washington Banking Master Trust name. The junior subordinated debentures are the sole assets of the Master Trust, and payments under the junior subordinated debentures are the sole revenues of the Trust. All of the common securities of the Master Trust are owned by the Company. Heritage has fully and unconditionally guaranteed the capital securities along with all obligations of the Master Trust under the trust agreements.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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