INCOME TAXES (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011
INCOME TAXES
Effective income tax rate (as a percent)	35.00%	35.00%			36.00%	32.00%
Reconciliation of federal income taxes and reported income taxes
Statutory federal tax provision	$ 61,000	$ 96,000	$ 186,000	$ 473,000
State income taxes	2,000	8,000	18,000	41,000
Income tax credits	(4,000)	(20,000)	(10,000)	(52,000)
Tax authority closing agreement				(96,000)
Change in uncertain tax positions	10,000	5,000	18,000	95,000
Other	(12,000)	9,000	(20,000)	(26,000)
Income tax expense	57,000	98,000	192,000	435,000
Unrecognized tax benefits
Net uncertain tax benefit positions that would reduce effective income tax rate, if recognized	136,000		136,000
Increase in uncertain tax positions related to R&E credits			$ 18,000

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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