CREDIT AGREEMENTS - Credit Facilities (Details) - 3 months ended Mar. 31, 2017 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	$ 2,289
Less: outstanding financial guarantee requested			2,001
Additional availability for financial guarantee			$ 288
Interest rates on financial guarantee requested	1.50%	1.50%	1.50%
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	$ 3,052
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			(116)
Borrowing capacity	NZD 5,000		3,504
Additional borrowing availability			$ 2,052
Interest rates on outstanding borrowing	3.99%	3.99%	3.99%
Line of Credit Facility, Current Borrowing Capacity			$ 2,168
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	19,073
Less: outstanding borrowing			(8,066)
Additional borrowing availability			$ 6,836
Interest rates on outstanding borrowing	3.19%	3.19%	3.19%
Line of Credit Facility, Current Borrowing Capacity			$ 14,902