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Derivatives (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Apr. 13, 2017 | Aug. 24, 2015 | Dec. 30, 2014 | Oct. 15, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |  |  |  |  |
Notional Amount of Interest Rate Cash Flow Hedge Derivatives |  |  |  |  | $ 25,000 | $ 25,000 | $ 25,000 | $ 25,000
Interest expense on derivatives | $ 148 | $ 124 | $ 153 | $ 232 |  |  |  |

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- Definition Interest expense on derivatives. + References No definition available. + Details
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Balance Type: | debit
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- 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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