LONG-TERM DEBT (Details) $ / shares in Units, € in Thousands, BRL in Thousands				1 Months Ended				3 Months Ended			12 Months Ended
	Mar. 13, 2015 USD ($)	Feb. 27, 2014 USD ($)	Dec. 21, 2009 USD ($) trading_days	Sep. 30, 2015 EUR (€) property	Dec. 31, 2014 USD ($) loan	Jul. 31, 2014 USD ($)	May. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2015 CAD shares	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2015 CAD	Sep. 30, 2014 USD ($)	Sep. 30, 2007 USD ($)	Dec. 31, 2015 AUD	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2015 CAD	Dec. 31, 2015 BRL	Sep. 30, 2015 USD ($) property	Sep. 30, 2015 BRL property	Dec. 31, 2014 AUD	Dec. 31, 2014 USD ($)	May. 31, 2014 AUD loan	Feb. 14, 2014 USD ($)	Oct. 21, 2013 USD ($) property
Debt Instrument [Line Items]
Face amount																						$ 21,098,000			$ 32,280,000
Payment of tender offer premium								$ 31,530,000
Interest paid								10,352,000		$ 10,120,000
Underwriting fees and other expense capitalized													$ 10,313,000
Write off of deferred debt issuance cost								6,574,000
Prepaid interest on defeased note on extinguishment of debt								$ 786,000
Maximum percentage of equity interest of subsidiaries borrowings guaranteed								65.00%	65.00%
Line of credit facility, amount outstanding																$ 15,922,000
Number of properties refinanced | property																									4
Long-term Debt																901,217,000			$ 843,569,000
Debt instrument, basis spread on variable rate								2.20%	2.20%	1.30%
Long-term debt, gross																917,191,000			861,199,000
Number of refinanced ESOP loan | loan					2
Number of new term loan refinance from esop loans | loan					1
Amount of line note available to purchase common stock in open market					$ 10,000,000
Shares purchased for award value								$ 20,000,000
Shares purchased for award value (usd per share) | $ / shares								$ 12.57
Stock Issued During Period, Shares, Employee Stock Ownership Plan | shares								1,591,117	1,591,117
Proceeds from issuance of long-term debt								$ 79,874,000		$ 10,279,000
Capital lease maturity year														2022
Long-term debt, percentage bearing fixed interest, percentage rate														5.00%
Debt instrument, interest rate during period								6.00%	6.00%
Northcote Holdings Pty. Ltd [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding																$ 0
Debt instrument, number of loans | loan																							2
Convert. debt due 2017 [Member]
Debt Instrument [Line Items]
Face amount			$ 100,000,000
Debt instrument, interest rate, stated percentage			4.00%
Debt instrument, convertible, conversion ratio								69.3811	69.3811
Debt conversion, converted instrument, amount													$ 1,000
Debt instrument, convertible, conversion price (in Dollars per share) | $ / shares																$ 14.41
Debt instrument, convertible, terms of conversion feature			1.00%
Debt Instrument, Convertible, Conversion Price Adjustment | $ / shares																$ 0.13
Debt Instrument, Convertible, Conversion Ratio Adjustment															0.77%	0.77%	0.77%	0.77%
Debt instrument, convertible, if-converted value in excess of principal								$ 15,720,000		15,720,000
LIBOR Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, interest rate during period	2.00%
Revolving Credit Facility [Member] | Revolver due 2019 [Member]
Debt Instrument [Line Items]
Line Of Credit, Covenant Compliance, Minimum Liquidity Requirement, Cash and Available Borrowings	$ 100,000,000
Number of months prior to maturity	6 months
Revolver due 2019 [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding																$ 95,000,000
Line of credit facility, remaining borrowing capacity																$ 139,078,000
Revolver due 2019 [Member] | Letter Of Credit Subfacility [Member]
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity	$ 50,000																							$ 60,000,000
Revolver due 2019 [Member] | Multicurrency Subfacility [Member]
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity																								50,000,000
Revolver due 2019 [Member] | Margin Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, interest rate during period	1.00%
Revolver Due 2020 [Member]
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity	$ 250,000
Convertible Subordinated Debt [Member] | Convert. debt due 2017 [Member]
Debt Instrument [Line Items]
Number of days prior to maturity | trading_days			20
Debt Instrument, Convertible, Threshold Consecutive Trading Days			30 days
Debt instrument, convertible, terms of conversion feature			130.00%
Debt Instrument, Convertible, Threshold Number of Trading Days Prior to Maturity of Notes			42 days
Convertible Notes 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, effective percentage															4.00%	4.00%	4.00%	4.00%
Senior notes due 2022 [Member]
Debt Instrument [Line Items]
Face amount		$ 600,000,000
Debt instrument, interest rate, stated percentage		5.25%
Interest paid								$ 7,875,000		$ 7,875,000
Long-term Debt																$ 592,058,000			591,736,000
Long-term debt, gross																$ 600,000,000			$ 600,000,000
Debt instrument, interest rate during period								5.40%	5.40%	5.40%
Debt instrument, interest rate, effective percentage				5.25%											5.25%	5.25%	5.25%	5.25%	5.25%	5.25%
Senior notes due 2018 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage															7.125%	7.125%	7.125%	7.125%
Loss from debt extinguishment, net								$ (38,890,000)
Senior Notes [Member]
Debt Instrument [Line Items]
Interest paid								16,716,000
Real estate mortgages [Member]
Debt Instrument [Line Items]
Interest paid								$ 151,000		$ 124,000
Number of properties refinanced | property				2															2	2
Number of Real Estate Properties With New Mortgages | property				2															2	2
Debt instrument, description of variable rate basis								The loans bear interest at a rate of LIBOR plus 1.50%	The loans bear interest at a rate of LIBOR plus 1.50%
Long-term Debt																$ 31,284,000			$ 31,810,000
Debt instrument, basis spread on variable rate								2.25%	2.25%
Long-term debt, gross																31,742,000			32,280,000
Debt instrument, interest rate during period								3.30%	3.30%	3.90%
ESOP Loans [Member]
Debt Instrument [Line Items]
Interest paid								$ 256,000		$ 260,000
Long-term Debt																35,987,000			36,520,000
Debt instrument, basis spread on variable rate								2.38%	2.38%
Long-term debt, gross																36,194,000			36,744,000
Debt instrument, periodic payment, principal								$ 551,000
Debt instrument balloon payment								$ 30,137,000
Debt instrument, interest rate during period								3.00%	3.00%	2.80%
ESOP Loan July 2014 [Member]
Debt Instrument [Line Items]
Amount of line note available to purchase common stock in open market						$ 10,000,000
ESOP Loan July 2014 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								2.38%	2.38%
Term Loan December 2013 and May 2014 [Member] | Northcote Holdings Pty. Ltd [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding															AUD 31,249,000	$ 22,778,000
Debt instrument, basis spread on variable rate										2.80%
Debt instrument, interest rate, effective percentage															4.86%	4.86%	4.86%	4.86%
Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt				€ 10															$ 15,000,000
Long-term debt, percentage bearing fixed interest, percentage rate				2.50%															2.50%	2.50%
Proceeds from long-term lines of credit				€ 15,000							$ 16,389,000
Debt Instrument, Periodic Payment | €				1,250
Debt instrument, interest rate, effective percentage															2.20%	2.20%	2.20%	2.20%
Term Loan [Member] | Northcote Holdings Pty. Ltd [Member]
Debt Instrument [Line Items]
Face amount | AUD																					AUD 12,500,000
Term Loan [Member] | Brazilian CDI [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate during period								20.14%	20.14%
Revolver Due 2013 [Member]
Debt Instrument [Line Items]
Long-term Debt																			$ 0
Debt instrument, basis spread on variable rate								1.75%	1.75%		1.75%	1.75%
Proceeds from long-term lines of credit				€ 5,000							$ 5,463,000
Term Loan May 2014 [Member] | Northcote Holdings Pty. Ltd [Member]
Debt Instrument [Line Items]
Face amount | AUD																							AUD 20,000,000
Debt instrument, periodic payment, principal							$ 625,000
Capital lease - real estate [Member]
Debt Instrument [Line Items]
Interest paid								$ 93,000		$ 106,000
Long-term Debt																$ 7,111,000			7,368,000
Long-term debt, gross																$ 7,261,000			$ 7,524,000
Proceeds from issuance of long-term debt														$ 14,290,000
Debt instrument, interest rate during period								5.40%	5.40%	5.30%
Debt instrument, interest rate, effective percentage				5.00%											5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
Non U.S. term loans [Member]
Debt Instrument [Line Items]
Interest paid								$ 284,000		$ 388,000
Line of credit facility, amount outstanding																$ 1,814,000		BRL 7,083
Long-term Debt																37,536,000			$ 38,843,000
Long-term debt, gross																37,801,000			39,142,000
Maintains maximum amount of line of credit																3,278,000				BRL 12,800
Non U.S. lines of credit [Member]
Debt Instrument [Line Items]
Interest paid								259,000		141,000
Line of credit facility, amount outstanding																3,739,000	CAD 5,184,000
Long-term Debt																5,541,000			8,931,000
Long-term debt, gross																5,553,000			8,934,000
Proceeds from long-term lines of credit								7,079,000	CAD 9,816,000			CAD 15,000,000
Non U.S. lines of credit [Member] | Line of Credit Two [Member] | Northcote Holdings Pty. Ltd [Member]
Debt Instrument [Line Items]
Line of credit facility, current borrowing capacity															AUD 5,000,000	$ 5,000,000			3,644
Debt instrument, basis spread on variable rate							2.50%
Debt instrument, interest rate, effective percentage															4.56%	4.56%	4.56%	4.56%
Non U.S. lines of credit [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end															1.73%	1.73%	1.73%	1.73%
Non U.S. lines of credit [Member] | Bankers Acceptance Rate [Member]
Debt Instrument [Line Items]
Line of credit facility, interest rate at period end															2.16%	2.16%	2.16%	2.16%
Revolver due 2019 [Member]
Debt Instrument [Line Items]
Interest paid								$ 571,000		$ 338,000
Line of credit facility, current borrowing capacity																								$ 225,000,000
Long-term Debt																$ 93,086,000			32,951,000
Long-term debt, gross																95,000,000			$ 35,000,000
Senior notes due 2018 [Member] | Senior Notes [Member] | Senior Notes 2022 [Member]
Debt Instrument [Line Items]
Face amount		$ 550,000,000
Debt instrument, interest rate, stated percentage		7.125%
Payment of tender offer premium		$ 31,530,000
Fair Value, Inputs, Level 1 [Member] | Convertible Notes 2017 [Member]
Debt Instrument [Line Items]
Convertible debt, fair value disclosures																128,375,000
Fair Value, Inputs, Level 1 [Member] | Senior notes due 2022 [Member]
Debt Instrument [Line Items]
Convertible debt, fair value disclosures																$ 570,000,000