Nature of Business	6 Months Ended
Jun. 30, 2012
Nature of Business [Abstract]
Nature of Business	A. Nature of Business MicroFinancial Incorporated (referred to as “MicroFinancial,” “we,” “us” or “our”) operates primarily through its wholly-owned subsidiaries, TimePayment Corp. and LeaseComm Corporation. TimePayment is a specialized commercial finance company that leases and rents “microticket” equipment and provides other financing services. LeaseComm started originating leases in January 1986 and in October 2002 suspended virtually all originations due to an interruption in financing. TimePayment commenced originating leases in July 2004. The average amount financed by TimePayment during 2011 was approximately $5,900 compared to the 2012 year to date average of $5,500. LeaseComm historically financed contracts of approximately $1,900. We primarily source our originations through a nationwide network of independent equipment vendors, sales organizations and other dealer-based origination networks. We fund our operations through cash provided by operating activities and borrowings under our revolving line of credit.

The entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 94-6

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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