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CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) [Abstract]
Revenue	$ 21,883,517	$ 19,927,433
Cost of sales	17,392,385	15,486,863
Gross profit	4,491,132	4,440,570
Selling, general and administrative expenses	1,838,660	1,877,922
Income from operations	2,652,472	2,562,648
Interest expense	143,603	141,372
Income before provision for income taxes	2,508,869	2,421,276
Provision for income taxes	780,000	750,000
Net income	1,728,869	1,671,276
Other comprehensive income, net of tax
Change in unrealized loss- interest rate swap	3,179	3,711
Comprehensive Income	$ 1,732,048	$ 1,674,987
Income per common share - basic (in dollars per share)	$ 0.21	$ 0.20
Income per common share - diluted (in dollars per share)	$ 0.20	$ 0.20
Shares used in computing income per common share:
Basic (in shares)	8,421,142	8,377,654
Diluted (in shares)	8,534,856	8,447,974

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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

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-Name Accounting Standards Codification

-Topic 260

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-Name Emerging Issues Task Force (EITF)

-Number 07-4

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Paragraph 171

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 40

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-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.



Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-Publisher FASB

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-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.



Reference 7: http://www.xbrl.org/2003/role/presentationRef

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