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INCOME TAXES (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Effective income tax rate (as a percent)	29.00%	35.00%		36.00%
Reconciliation of federal income taxes and reported income taxes
Statutory federal tax provision (benefit)	$ 34,000	$ (82,000)
State income taxes	3,000	(10,000)
Income tax credits	(23,000)	(13,000)
Other	12,000	1,000
Income tax (benefit) expense	26,000	$ (104,000)
Unrecognized tax benefits
Net uncertain tax benefit positions that would increase (reduce) effective income tax rate, if recognized	$ 51,000			$ 51,000
Forecast
Effective income tax rate (as a percent)			30.00%

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