Balance Sheet Offsetting (Tables)

12 Months Ended

Dec. 31, 2018

Balance Sheet Offsetting [Abstract]

Balance Sheet Offsetting

The following table presents the Corporation’s derivative asset and derivative liability positions and the effect of netting arrangements on the Consolidated Balance Sheets:

(Dollars in thousands)	December 31, 2018				December 31, 2017
	Derivative Assets		Derivative Liabilities		Derivative Assets		Derivative Liabilities
Derivatives Designated as Cash Flow Hedging Instruments:
Interest rate risk management contracts:
Interest rate caps		$20		$—		$25		$—
Interest rate swaps	903		—		213		14
Interest rate floors	37		—		110		—
Derivatives not Designated as Hedging Instruments:
Loan related derivative contracts:
Interest rate swaps with customers	5,340		7,719		2,857		3,884
Mirror swaps with counterparties	7,592		5,392		3,801		2,917
Foreign exchange contracts	—		7		—		26
Gross amounts	13,892		13,118		7,006		6,841
Less amounts offset in Consolidated Balance Sheets	10,732		10,732		5,238		5,238
Net amounts presented in Consolidated Balance Sheets	3,160		2,386		1,768		1,603
Less collateral pledged (1)	—		1,460		—		1,039
Net amounts		$3,160		$926		$1,768		$564

(1) Collateral pledged to derivative counterparties in the form of cash. Washington Trust may need to post additional collateral in the future in proportion to potential increases in unrealized loss positions.