XML 65 R52.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Note 12 - Deferred Compensation Plan (Details Textual) | Dec. 31, 2016 shares
--- | ---
Deferred Compensation Plan Number Of Common Shares Credited To Account Balances | 96,310

X
- Definition Deferred compensation plan number of common shares credited to account balances. + References No definition available. + Details
Name: | mrtn_DeferredCompensationPlanNumberOfCommonSharesCreditedToAccountBalances
Namespace Prefix: | mrtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant