Interest Rate Swap Derivatives (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2017	Dec. 31, 2016
Notional Amount	$ 250,000	$ 250,000
Fair value	(101)	(692)
Other Assets [Member] \| Interest Rate Swap 1 [Member]
Notional Amount	75,000
Fair value	$ 18
Pay Rate	1.71%
Maturity	Mar. 31, 2020
Other Assets [Member] \| Interest Rate Swap 1 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Basis points	10.00%
Other Assets [Member] \| Interest Rate Swap 3 [Member]
Notional Amount	$ 75,000	75,000
Fair value	$ 19	$ 19
Pay Rate	1.92%	1.92%
Maturity	Mar. 31, 2022	Mar. 31, 2022
Other Assets [Member] \| Interest Rate Swap 3 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Basis points	10.00%	10.00%
Other Liabilities [Member] \| Interest Rate Swap 1 [Member]
Notional Amount		$ 75,000
Fair value		$ (197)
Pay Rate		1.71%
Maturity		Mar. 31, 2020
Other Liabilities [Member] \| Interest Rate Swap 1 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Basis points		10.00%
Other Liabilities [Member] \| Interest Rate Swap 2 [Member]
Notional Amount	$ 100,000	$ 100,000
Fair value	$ (138)	$ (514)
Pay Rate	1.74%	1.74%
Maturity	Apr. 15, 2021	Apr. 15, 2021
Other Liabilities [Member] \| Interest Rate Swap 2 [Member] \| Federal Funds Effective Swap Rate [Member]
Basis points	10.00%	10.00%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: 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=77997519&loc=d3e13433-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Details

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- Details

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- Details

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