Balance Sheets (USD $)	Dec. 31, 2014	Dec. 28, 2013
Current assets:
Cash and cash equivalents	$ 2,305,580	$ 1,571,054
Accounts receivable-trade, net	3,589,191us-gaap_AccountsReceivableNet	2,900,457us-gaap_AccountsReceivableNet
Inventories, net	2,528,954us-gaap_InventoryNet	2,183,699us-gaap_InventoryNet
Prepaid expenses and other current assets	166,783	175,726
Deferred taxes	682,968us-gaap_DeferredTaxAssetsNetCurrent	649,420us-gaap_DeferredTaxAssetsNetCurrent
Total current assets	9,273,476us-gaap_AssetsCurrent	7,480,356us-gaap_AssetsCurrent
Property and equipment:
Production equipment	8,085,095us-gaap_MachineryAndEquipmentGross	7,728,408us-gaap_MachineryAndEquipmentGross
Furniture and office equipment	404,856us-gaap_FurnitureAndFixturesGross	383,990us-gaap_FurnitureAndFixturesGross
Leasehold improvements	759,819us-gaap_LeaseholdImprovementsGross	759,819us-gaap_LeaseholdImprovementsGross
Total cost	9,249,770us-gaap_PropertyPlantAndEquipmentGross	8,872,217us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization	(8,047,561)	(7,470,815)
Construction in progress	555,334us-gaap_ConstructionInProgressGross	431,385us-gaap_ConstructionInProgressGross
Net property and equipment	1,757,543us-gaap_PropertyPlantAndEquipmentNet	1,832,787us-gaap_PropertyPlantAndEquipmentNet
Deferred taxes, non-current portion	1,617,497us-gaap_DeferredTaxAssetsNetNoncurrent	1,826,482us-gaap_DeferredTaxAssetsNetNoncurrent
Total assets	12,648,516us-gaap_AssetsNet	11,139,625us-gaap_AssetsNet
Current liabilities:
Accounts payable	1,352,418us-gaap_AccountsPayableCurrent	1,091,909us-gaap_AccountsPayableCurrent
Accrued expenses	1,049,616us-gaap_AccruedLiabilitiesCurrent	1,106,813us-gaap_AccruedLiabilitiesCurrent
Obligations under capital leases, current portion		76,372us-gaap_CapitalLeaseObligationsCurrent
Total current liabilities	2,402,034us-gaap_LiabilitiesCurrent	2,275,094us-gaap_LiabilitiesCurrent
Stockholders’ Equity:
Common stock, $0.01 par value, authorized 20,000,000 and 15,000,000 shares; issued 13,293,092 and 13,178,042; outstanding 13,144,489 and 13,066,641 shares; at December 27, 2014 and December 28, 2013, respectively	132,931us-gaap_CommonStockValueOutstanding	131,781us-gaap_CommonStockValueOutstanding
Additional paid-in capital	34,763,698us-gaap_AdditionalPaidInCapital	34,278,757us-gaap_AdditionalPaidInCapital
Accumulated deficit	(24,315,564)	(25,318,332)
Less cost of 148,603 and 111,401 common shares repurchased at December 27, 2014 and December 28, 2013, respectively	(334,583)us-gaap_TreasuryStockValue	(227,675)us-gaap_TreasuryStockValue
Total stockholders equity	10,246,482us-gaap_StockholdersEquity	8,864,531us-gaap_StockholdersEquity
Total liabilities and stockholders equity	$ 12,648,516	$ 11,139,625

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682