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Off-Balance Sheet Loan Commitments - Summary of Financial Instruments with Off-Balance Sheet Risk - (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Commitments to Make Loans |  |
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items] |  |
Financial instruments, off balance sheet risk, Fixed Rate | $ 40,988 | $ 7,345
Financial instruments, off balance sheet risk, Variable Rate | 25,500 | 7,580
Unused Lines of Credit |  |
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items] |  |
Financial instruments, off balance sheet risk, Fixed Rate | 105,837 | 109,611
Financial instruments, off balance sheet risk, Variable Rate | 190,451 | 145,475
Standby Letters of Credit |  |
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items] |  |
Financial instruments, off balance sheet risk, Fixed Rate | 1,556 | 2,547
Financial instruments, off balance sheet risk, Variable Rate | $ 11,261 | $ 4,706

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- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=75032840&loc=d3e61044-112788 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75032840&loc=d3e61082-112788 + Details
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