INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Tax computed at statutory U.S. federal income tax rates									$ 19,652	$ 30,160	$ 16,270
Non-controlling interest									(2,807)	(1,229)	(2,750)
Foreign tax reserve									2,468	2,095	2,081
State taxes									935	1,252	400
Change in valuation allowance									(5,949)	(2,548)	(476)
Foreign tax credit expiration									6,396	2,999	1,820
Other, net									1,359	415	3,265
Income tax expense	$ 1,482	$ 10,134	$ 13,008	$ (487)	$ 5,689	$ 9,569	$ 7,338	$ 5,552	24,137	28,148	9,536
Guyana
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Income taxes in excess (below) of statutory U.S. tax rates									379	(284)	701
Bermuda and Turks & Caicos
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Income taxes in excess (below) of statutory U.S. tax rates									$ 1,704	$ (4,712)	(3,203)
Turks & Caicos intercompany note receivable write-down
Reconciliation from the tax computed at statutory income tax rates to the Company's income tax expense
Income taxes in excess (below) of statutory U.S. tax rates											$ (8,572)