EMPLOYEE BENEFIT PLANS (Details)	1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($) employee	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Components of Net Periodic Benefit Cost
Service Cost
Interest Cost		8,000	37,000
Expected return on plan assets		(12,000)	(47,000)
Amortization of net (gain) loss		1,000	8,000
Net periodic pension cost		(3,000)	(2,000)
Cooperative contributions		0	$ 6,000	$ 20,000
Anticipated 2017 Contributions	$ 0	$ 9,000
Number of new employees eligible under the plan | employee	0