INCOME TAXES (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Components of income tax expense
Current taxes - Federal	$ 384,000	$ 273,000
Current taxes - State	(15,000)	(13,000)
Current taxes - Foreign	25,000	23,000
Deferred taxes - Federal	(109,000)	223,000
Deferred taxes - State	13,000	55,000
Income tax expense	298,000	561,000
Reconciliation of federal income taxes and reported income taxes
Statutory federal tax provision	315,000	595,000
State income taxes	28,000	52,000
Effect of foreign operations	(11,000)	(6,000)
Income tax credits	(14,000)	(66,000)
Permanent differences	24,000	1,000
Other	(44,000)	(15,000)
Income tax expense	298,000	561,000
Income from operations before income taxes
Domestic	770,440	1,666,281
Foreign	156,998	84,649
Income Before Income Taxes	927,438	1,750,930
Components of deferred tax assets (liabilities)
Allowance for uncollectable accounts	57,000	45,000
Inventories reserve	537,000	408,000
Accrued vacation	353,000	352,000
Non-compete amortization	335,000	390,000
Stock-based compensation	68,000	69,000
State Tax NOL	139,000	157,000
Other	175,000	236,000
Deferred tax assets	1,664,000	1,657,000
Prepaid expenses	(192,000)	(200,000)
Property and equipment	(842,000)	(923,000)
Deferred tax liabilities	(1,034,000)	(1,123,000)
Net deferred tax assets	630,000	534,000
Net current deferred tax assets	857,000	805,000
Net non-current deferred tax liabilities	(227,000)	(271,000)
Changes in total gross unrecognized tax benefit liabilities, excluding accrued interest
Balance at the beginning of the period	118,000	114,000
Additions	22,000	100,000
Reductions		(96,000)
Balance at the end of the period	$ 140,000	$ 118,000