XML 40 R26.htm IDEA: XBRL DOCUMENT v3.19.1

Concentration in Deposits	12 Months Ended
	Dec. 31, 2018
Risks and Uncertainties [Abstract]
Concentration In Deposits	Concentration in Deposits The Company had a concentration in its deposits of three customers totaling approximately $116.1 million at December 31, 2017 and three customers totaling approximately $160.6 million concentration of deposits at December 31, 2018.

X

- Definition

The entire disclosure for concentrations in deposits existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	smbk_ConcentrationInDepositsDisclosureTextBlock
Namespace Prefix:	smbk_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration