XML 37 R25.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Concentration in Deposits | 12 Months Ended
--- | ---
Dec. 31, 2016
Risks and Uncertainties [Abstract] |
Concentration In Deposits | Concentration in Deposits The Company had a concentration in its deposits of one customer totaling approximately $28,527,000 at December 31, 2015 and two customers totaling approximately $60,153,000 concentration of deposits at December 31, 2016.

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