Document And Entity Information (USD $)	12 Months Ended
	Mar. 31, 2013	Jun. 14, 2013	Sep. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	'mktg, inc.'
Entity Central Index Key	0000886475
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--03-31
Entity Well-Known Seasoned Issuer	No
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		8,641,448
Entity Public Float			$ 8,826,343
Document Type	10-K
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY