CREDIT AGREEMENTS - Credit Facilities (Details) - 6 months ended Jun. 30, 2016 NZD in Thousands, AUD in Thousands, $ in Thousands	NZD Rate	AUD Rate	USD ($) Rate
Lloyds [Member]
Line of Credit Facility [Line Items]
Debt Turns in days	55
National Australia Bank Limited and Bank of New Zealand [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Covenants, Minimum Fixed Charges Coverage Ratio Required | Rate	150.00%	150.00%	150.00%
Line of Credit Facility, Covenants, Minimum Receivables Ratio | Rate	120.00%	120.00%	120.00%
Financial Guarantee Facility | National Australia Bank Limited and Bank of New Zealand [Member]
Line of Credit Facility [Line Items]
Financial guarantee capacity		AUD 3,000	$ 2,235
Less: outstanding financial guarantee requested			1,852
Additional availability for financial guarantee			$ 383
Interest rates on financial guarantee requested	1.80%	1.80%	1.80%
Australian Receivables Facility [Member] [Domain] | National Australia Bank Limited and Bank of New Zealand [Member]
Line of Credit Facility [Line Items]
Borrowing capacity		AUD 4,000	$ 2,980
NEW ZEALAND | New Zealand Receivables Agreement [Member] | National Australia Bank Limited and Bank of New Zealand [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Fee Amount	NZD 1		1
Long-term Line of Credit			0
Borrowing capacity	NZD 5,000		3,568
Additional borrowing availability			$ 2,263
Interest rates on outstanding borrowing	4.38%	4.38%	4.38%
Line of Credit Facility, Current Borrowing Capacity			$ 2,263
Australia [Member] [Member] | Australian Receivables Facility [Member] [Domain] | National Australia Bank Limited and Bank of New Zealand [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Fee Amount		AUD 6	5
Borrowing capacity		AUD 25,000	18,625
Less: outstanding borrowing			(7,163)
Additional borrowing availability			$ 7,690
Interest rates on outstanding borrowing	3.40%	3.40%	3.40%
Line of Credit Facility, Current Borrowing Capacity			$ 14,853