Derivatives and Balance Sheet Offsetting (Tables)

3 Months Ended

Mar. 31, 2017

Derivative [Line Items]

Balance Sheet Offsetting [Table Text Block]

The following tables show the gross interest rate swap agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.

	Gross Amounts of Recognized Assets/Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets
							Collateral Posted			Net Amount
March 31, 2017	(in thousands)
Assets
Interest rate contracts	$	8,598	$	—	$	8,598	$	—		$	8,598
Liabilities
Interest rate contracts	$	8,618	$	—	$	8,618	$	(8,618	)	$	—
Repurchase agreements	$	46,914	$	—	$	46,914	$	(46,914	)	$	—
December 31, 2016
Assets
Interest rate contracts	$	9,012	$	—	$	9,012	$	—		$	9,012
Liabilities
Interest rate contracts	$	9,036	$	—	$	9,036	$	(9,036	)	$	—
Repurchase agreements	$	80,822	$	—	$	80,822	$	(80,822	)	$	—

Carrying Value of Securities Pledged As Collateral

The following table summarizes the carrying value of securities pledged as collateral to secure public deposits, borrowings and other purposes as permitted or required by law:

	March 31, 2017
	(in thousands)
Washington and Oregon State to secure public deposits	$	228,794
Federal Reserve Bank to secure borrowings	54,551
Other securities pledged	125,954
Total securities pledged as collateral	$	409,299

Not Designated as Hedging Instrument [Member]

Derivative [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table presents the fair value of derivatives not designated as hedging instruments at March 31, 2017 and December 31, 2016:

Asset Derivatives

Liability Derivatives

March 31, 2017

December 31, 2016

March 31, 2017

December 31, 2016

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

(in thousands)

Interest rate contracts

Other assets

$

8,598

Other assets

$

9,012

Other liabilities

$

8,618

Other liabilities

$

9,036

Available-for-sale Securities [Member]

Derivative [Line Items]

Carrying Value of Securities Pledged As Collateral

The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:

	Remaining contractual maturity of the agreements
	Overnight and continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
March 31, 2017	(in thousands)
Class of collateral pledged for repurchase agreements
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations	$	21,914	$	—	$	—	$	25,000	$	46,914
Gross amount of recognized liabilities for repurchase agreements									46,914
Amounts related to agreements not included in offsetting disclosure									$	—