Guaranteed Preferred Beneficial Interests in Company's Junior Subordinated Deferrable Interest Debentures (Trust-Preferred Securities) and Interest Rate Swap Agreements (Tables)

12 Months Ended

Dec. 31, 2013

Guaranteed Preferred Beneficial Interests in Company's Junior Subordinated Deferrable Interest Debentures (Trust-Preferred Securities) and Interest Rate Swap Agreements

Schedule of liability derivatives included in other liabilities

	December 31,
Liability Derivatives (Included in Other Liabilities)	2013		2012
Cash flow hedges — swaps:
Fair value	$	8,037	12,932
Notional amount	75,000		100,000
Collateral posted	8,405		13,505

Summary of guaranteed capital debt securities and junior subordinated deferrable interest debentures held by the trusts

	Capital Debt		December 31,
	Securities		2013	2012
Northwest Bancorp Capital Trust III	$	50,000	51,547	51,547
Northwest Bancorp Statutory Trust IV	50,000		51,547	51,547
Total	$	100,000	103,094	103,094