Derivative Instruments and Hedging Activities, Balance sheet location, by Derivative contract type (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Fair value balance sheet location	Other Liabilities	Other Liabilities
Expiration date	Sep. 15, 2020	Sep. 15, 2020
Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Fair value balance sheet location	Other Assets	Other Liabilities
Expiration date	Aug. 15, 2021	Aug. 15, 2021
Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Fair value balance sheet location	Other Assets
Expiration date	Aug. 15, 2021
Interest Rate Swap Four [Member]
Derivatives, Fair Value [Line Items]
Fair value balance sheet location	Other Assets	Other Liabilities
Expiration date	Sep. 26, 2022	Aug. 15, 2021
Other Liabilities [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional/ contract amount	$ 4,000	$ 4,000
Estimated net fair value	(223)	(547)
Other Liabilities [Member] | Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Notional/ contract amount	2,161	2,204
Estimated net fair value	13	(148)
Other Liabilities [Member] | Interest Rate Swap Three [Member]
Derivatives, Fair Value [Line Items]
Notional/ contract amount	2,037	2,078
Estimated net fair value	11	(141)
Other Liabilities [Member] | Interest Rate Swap Four [Member]
Derivatives, Fair Value [Line Items]
Notional/ contract amount	1,025	1,050
Estimated net fair value	$ 72	$ (5)