Loans - Loans Held for Investment Individually Evaluated for Impairment by Class of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Unpaid Principal Balance
Total with no related allowance recorded	$ 12,194	$ 2,261
Total with an allowance recorded	14,616	589
Total	26,810	2,850
Recorded Investment
Total with no related allowance recorded	12,194	2,242
Total with an allowance recorded	14,616	532
Total	26,810	2,774	$ 3,279
Total with an allowance recorded, Allowance for Loan Losses Allocated	7,464	290
Commercial
Unpaid Principal Balance
Total with no related allowance recorded	5,817	1,243
Total with an allowance recorded	14,616	589
Recorded Investment
Total with no related allowance recorded	5,817	1,243
Total with an allowance recorded	14,616	532
Total with an allowance recorded, Allowance for Loan Losses Allocated	7,464	290
Consumer
Unpaid Principal Balance
Total with no related allowance recorded		1
Recorded Investment
Total with no related allowance recorded		1
Commercial \| Real estate
Unpaid Principal Balance
Total with no related allowance recorded	5,801	500
Recorded Investment
Total with no related allowance recorded	5,801	500
Land and construction \| Real estate
Unpaid Principal Balance
Total with no related allowance recorded		138
Recorded Investment
Total with no related allowance recorded		119
Home equity \| Real estate
Unpaid Principal Balance
Total with no related allowance recorded	576	379
Recorded Investment
Total with no related allowance recorded	$ 576	$ 379

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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