Derivative Financial Instruments (Balance sheet category and fair values of derivative instruments (cash flow hedges)) (Details) - Other liabilities - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Interest Rate Swap due April 20, 2016
Derivatives, Fair Value [Line Items]
Notional Amount	$ 0	$ 8,947
Fair Value	$ 0	$ (57)
Receive Rate	0.00%	3.152%
Weighted Average Pay Rate	0.00%	5.14%
Interest Rate Swap due March 17, 2021
Derivatives, Fair Value [Line Items]
Notional Amount	$ 25,000	$ 25,000
Fair Value	$ (1,556)	$ (713)
Receive Rate	0.656%	0.526%
Weighted Average Pay Rate	2.255%	2.255%
Interest Rate Swap due March 1, 2017
Derivatives, Fair Value [Line Items]
Notional Amount	$ 20,000	$ 20,000
Fair Value	$ (387)	$ (600)
Receive Rate	0.673%	0.414%
Weighted Average Pay Rate	3.22%	3.22%
Interest Rate Swap due January 7, 2020
Derivatives, Fair Value [Line Items]
Notional Amount	$ 20,000	$ 20,000
Fair Value	$ (1,907)	$ (1,582)
Receive Rate	0.627%	0.323%
Weighted Average Pay Rate	3.355%	3.355%
Interest Rate Swap due March 26, 2019
Derivatives, Fair Value [Line Items]
Notional Amount	$ 10,000	$ 10,000
Fair Value	$ (248)	$ (83)
Receive Rate	0.64%	0.603%
Weighted Average Pay Rate	1.674%	1.674%
Interest Rate Swap due March 18, 2019
Derivatives, Fair Value [Line Items]
Notional Amount	$ 10,000	$ 10,000
Fair Value	$ (244)	$ (83)
Receive Rate	0.656%	0.526%
Weighted Average Pay Rate	1.658%	1.658%
Interest Rate Swap due May 10, 2021
Derivatives, Fair Value [Line Items]
Notional Amount	$ 39,667
Fair Value	$ (594)
Receive Rate	2.945%
Weighted Average Pay Rate	3.674%
Interest Rate Swap due June 15, 2024
Derivatives, Fair Value [Line Items]
Notional Amount	$ 20,000	$ 20,000
Fair Value	$ (1,481)	$ (146)
Receive Rate	0.00%	0.00%
Weighted Average Pay Rate	2.39%	2.39%
Interest Rate Swap due March 1, 2024
Derivatives, Fair Value [Line Items]
Notional Amount	$ 20,000	$ 20,000
Fair Value	$ (1,519)	$ (176)
Receive Rate	0.00%	0.00%
Weighted Average Pay Rate	2.352%	2.352%

Interest Rate Cash Flow Hedge Derivative, Receive Rate, Percentage

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- Definition

Interest Rate Cash Flow Hedge Derivative, Weighted Average Pay Rate, Percentage

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

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