INCOME TAXES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Components of income tax expense
Current taxes - Federal	$ 72,000	$ 384,000
Current taxes - State	(21,000)	(15,000)
Current taxes - Foreign	20,000	25,000
Deferred taxes - Federal	194,000	(109,000)
Deferred taxes - State	35,000	13,000
Income tax expense	300,000	298,000
Reconciliation of federal income taxes and reported income taxes
Statutory federal tax provision	370,000	315,000
State income taxes	45,000	28,000
Effect of foreign operations	(3,000)	(11,000)
Income tax credits	(167,000)	(14,000)
Permanent differences	55,000	24,000
Other		(44,000)
Income tax expense	300,000	298,000
Income from operations before income taxes
Domestic	1,074,572	770,440
Foreign	12,804	156,998
Income Before Income Taxes	1,087,376	927,438
Components of deferred tax assets (liabilities)
Allowance for uncollectable accounts	51,000	57,000
Inventories reserve	404,000	537,000
Accrued vacation	386,000	353,000
Non-compete amortization	281,000	335,000
Stock-based compensation and equity appreciation rights	100,000	68,000
State Tax NOL carryforwards	117,000	139,000
Other	144,000	175,000
Deferred tax assets	1,483,000	1,664,000
Prepaid expenses	(246,000)	(192,000)
Property and equipment	(836,000)	(842,000)
Deferred tax liabilities	(1,082,000)	(1,034,000)
Net deferred tax assets	401,000	630,000
Net current deferred tax assets	683,000	857,000
Net non-current deferred tax liabilities	(282,000)	(227,000)
Changes in total gross unrecognized tax benefit liabilities, excluding accrued interest
Balance at the beginning of the period	140,000	118,000
Additions	53,000	22,000
Reductions	0	0
Balance at the end of the period	$ 193,000	$ 140,000