CREDIT AGREEMENTS (Details) € in Thousands, £ in Thousands, SGD in Thousands, NZD in Thousands, AUD in Thousands, $ in Thousands			3 Months Ended	9 Months Ended
	Sep. 15, 2016 GBP (£)	Aug. 01, 2014 GBP (£)	Sep. 30, 2016 AUD	Sep. 30, 2016 USD ($)	Sep. 30, 2016 NZD	Sep. 30, 2016 GBP (£)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 SGD	Sep. 15, 2016 USD ($)	Aug. 01, 2014 USD ($)
Lloyds
Line of Credit Facility [Line Items]
Debt Instrument, Term		2 years
Line of Credit Facility, Maximum Borrowing Capacity	£ 12,000	£ 15,000					$ 7,691			$ 15,571	$ 19,464
Line of credit facility, covenant, maximum credit dilution				5.00%
Additional borrowing availability							$ 7,255
Interest rates on outstanding borrowing			2.00%		2.00%	2.00%	2.00%	2.00%	2.00%
Minimum availability required						£ 2,000	$ 2,595
Line of Credit Facility, Fair Value of Amount Outstanding							(436)
Debt Instrument, Renewal Term		3 months
Debt Instrument, Rolling Period				3 months
Lloyds | Credit Facility Lending based on Billed Revenue [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	£ 11,500									14,922
Eligible work in progress temporary receivables	83.00%
Lloyds | Credit Facility Lending based on Unbilled Revenue [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	£ 500									$ 649
Eligible work in progress permanent receivables	25.00%
Lloyds [Member]
Line of Credit Facility [Line Items]
Debt Turns in days				55
National Australia Bank Limited and Bank of New Zealand [Member] | Financial Guarantee Facility
Line of Credit Facility [Line Items]
Financial guarantee capacity			AUD 3,000				2,298
Debt Instrument, Fee Percent				1.50%
Outstanding Borrowings							(1,904)
Additional availability for financial guarantee							$ 394
Interest rates on financial guarantee requested			1.80%		1.80%	1.80%	1.80%	1.80%	1.80%
National Australia Bank Limited and Bank of New Zealand [Member] | Australian Receivables Facility [Member] [Domain]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			AUD 4,000				$ 3,064
National Australia Bank Limited [Member] | Financial Guarantee Facility
Line of Credit Facility [Line Items]
Debt Instrument, Fee Percent				0.30%
Lending Arrangements Belgium, Netherlands, Singapore, and Mainland China Banks | Overdraft Facility
Line of Credit Facility [Line Items]
Line of credit facility, average outstanding amount				$ 9,465
Debt, weighted average interest rate			3.45%		3.45%	3.45%	3.45%	3.45%	3.45%
Lending Arrangements Netherlands and Belgium Banks | Overdraft Facility | EURIBOR
Line of Credit Facility [Line Items]
Interest rates on outstanding borrowing			2.75%		2.75%	2.75%	2.75%	2.75%	2.75%
Base Rate | Lloyds
Line of Credit Facility [Line Items]
Debt instrument, interest rate increase				1.75%
Singapore Subsidiary | Overdraft Facility | Singapore Prime Rate
Line of Credit Facility [Line Items]
Debt instrument, interest rate increase				1.75%
Singapore Subsidiary | Lending Arrangements Singapore Bank
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 147		SGD 200
Lending arrangement expiration				1 year
Singapore Subsidiary | Lending Arrangements Singapore Bank | Overdraft Facility | Singapore Prime Rate
Line of Credit Facility [Line Items]
Interest rates on outstanding borrowing			6.00%		6.00%	6.00%	6.00%	6.00%	6.00%
NEW ZEALAND | National Australia Bank Limited and Bank of New Zealand [Member] | New Zealand Receivables Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					NZD 5,000		$ 3,643
LIne of Credit Facility, Notice Period				90 days
Additional borrowing availability							$ 1,962
Interest rates on outstanding borrowing			4.19%		4.19%	4.19%	4.19%	4.19%	4.19%
Debt Instrument, Fee Amount					NZD 1		$ 1
Long-term Line of Credit							0
Line of Credit Facility, Current Borrowing Capacity							1,962
Australia [Member] [Member] | National Australia Bank Limited and Bank of New Zealand [Member] | Australian Receivables Facility [Member] [Domain]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			AUD 25,000				19,150
Debt instrument, interest rate increase				1.50%
Additional borrowing availability							$ 8,615
Interest rates on outstanding borrowing			3.17%		3.17%	3.17%	3.17%	3.17%	3.17%
Debt Instrument, Fee Amount			AUD 6				$ 5
Line of Credit Facility, Current Borrowing Capacity							16,274
Line of Credit Facility, Fair Value of Amount Outstanding							(7,659)
Belgium Subsidiary | Lending Arrangements Belgium Bank | Overdraft Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 1,124	€ 1,000
LIne of Credit Facility, Notice Period			15 days