Balance Sheet Offsetting (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Offsetting Assets [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		$ 20,180	$ 20,360
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(864)	(652)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	0	0
Net Amount		19,316	19,708
Offsetting Liabilities [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		20,223	20,790
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(864)	(652)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	(19,290)	(19,520)
Net Amount		69	618
Foreign Exchange Contract [Member]
Offsetting Assets [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		629	446
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(629)	(446)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	0
Net Amount		0
Offsetting Liabilities [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		672	876
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(629)	(446)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	0	(310)
Net Amount		43	120
Interest Rate Swap [Member]
Offsetting Assets [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		19,551	19,914
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(235)	(206)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	0	0
Net Amount		19,316	19,708
Offsetting Liabilities [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheets		19,551	19,914
Gross Amounts Not Offset on the Consolidated Balance Sheets, Financial Instruments	[1]	(235)	(206)
Gross Amounts Not Offset on the Consolidated Balance Sheets, Cash Collateral	[2]	(19,290)	(19,210)
Net Amount		$ 26	$ 498

[1] For interest rate swap and foreign exchange derivative assets, amounts represent any derivative liability fair values that could be offset in the event of counterparty or customer default. For interest rate swap and foreign exchange derivative liabilities, amounts represent any derivative asset fair values that could be offset in the event of counterparty or customer default.

[2] Amounts represent cash collateral posted on interest rate swap transactions with financial institution counterparties. Interest rate swaps with customers are collateralized by the underlying loans to those borrowers.