COMMITMENTS AND CONTINGENCIES (Detail Textuals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Long-term Purchase Commitment [Line Items]
Maximum repurchase collateral amount	$ 50,932	$ 45,196
Capital cost incurred	700
Capital Addition Purchase Commitments
Long-term Purchase Commitment [Line Items]
Commitment for construction and acquisition of property, plant and equipment	14,600
Pennsylvania
Long-term Purchase Commitment [Line Items]
Estimated cost of operations	24,700
Capital cost incurred	23,700
Realized net gain on sale of plant location	601
Tennessee
Long-term Purchase Commitment [Line Items]
Estimated cost of operations	21,100
Capital cost incurred	19,400
Current estimated costs of administrative building	$ 4,200