ACCRUED AND OTHER LIABILITIES - Environmental Reserves (Details)		3 Months Ended			12 Months Ended	15 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 31, 2017 USD ($) a	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($) a	Dec. 31, 2015 USD ($) a	Mar. 31, 2017 USD ($) a	Dec. 31, 2014 USD ($) a
Wetlands restoration
Environmental reserves
Accrued restoration cost		$ 1,000,000		$ 1,700,000	$ 1,700,000	$ 1,000,000
Acres | a				148.4	148.4
Estimated cost	$ 2,000,000	2,000,000	$ 2,000,000
Environmental costs funded		1,000,000				1,000,000
Increase in accrual of restoration Costs			$ 300,000
Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed [Member]
Environmental reserves
Environmental reserve accrued		610,000				$ 610,000	$ 110,000
Additional environmental reserve accrued		193,000			$ 500,000
Environmental remediation cost		$ 417,000
Minimum
Environmental reserves
Acres | a		8,200				8,200
Minimum | Wetlands restoration
Environmental reserves
Estimated cost				$ 1,700,000
Minimum | Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed [Member]
Environmental reserves
Additional environmental reserve accrued					500,000
Maximum | Wetlands restoration
Environmental reserves
Estimated cost				$ 1,900,000
Maximum | Environmental Reserve for Monitoring Environmental Remediation Work Previously Performed [Member]
Environmental reserves
Acres | a							1
Additional environmental reserve accrued					$ 1,000,000