DERIVATIVES AND FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of detailed information about financial instruments [abstract]

Schedule of Interest Rate Risk Effective and Repricing Analysis

The following table sets out all interest-earning financial assets and interest bearing financial liabilities held by the Group at December 31, indicating their effective interest rates and the period in which they re-price:

As at December 31, 2017	Note		Effective interestrate			Total US$’000			6 mths or less US$’000			6 –12 mths US$’000			1-2 years US$’000			2-5 years US$’000			> 5 years US$’000
Cash and cash equivalents		18		1.4	%		23,564			23,564			—			—			—			—
Short-term investments		19		1.4	%		34,043			—			34,043			—			—			—
Finance lease receivable		17		4.0	%		1,185			267			233			333			352			—
Licence payments		22		3.0	%		(1,112	)		(1,112	)		—			—			—			—
Finance lease payable		25		4.6	%		(886	)		(176	)		(178	)		(364	)		(168	)		—
Exchangeable note		24		4.8	%		(92,955	)		—			—			—			—			(92,955	)
Total							(36,161	)		22,543			34,098			(31	)		184			(92,955	)
As at December 31, 2016	Note		Effectiveinterestrate			Total US$’000			6 mths or less US$’000			6 –12 mths US$’000			1-2 years US$’000			2-5 years US$’000			> 5 years US$’000
Cash and cash equivalents		18		0.8	%		77,109			77,109			—			—			—			—
Finance lease receivable		17		4.1	%		1,330			289			253			392			396			—
Licence payments		22		3.0	%		(2,195	)		(1,112	)		(1,083	)		—			—			—
Finance lease payable		25		4.5	%		(1,005	)		(135	)		(138	)		(286	)		(446	)		—
Exchangeable note		24		4.8	%		(92,232	)		—			—			—			—			(92,232	)
Total							(16,993	)		76,151			(968	)		106			(50	)		(92,232	)

Schedule of Interest Rate Profile of Financial Assets/Liabilities

The interest rate profile of financial assets/liabilities of the Group was as follows:

	December 31, 2017 US$‘000			December 31, 2016 US$‘000
Fixed rate instruments
Fixed rate financial liabilities (licence fees)		(1,112	)		(2,195	)
Fixed rate financial liabilities (exchangeable note)		(92,955	)		(92,232	)
Fixed rate financial liabilities (finance lease payables)		(886	)		(1,005	)
Financial assets (short-term deposits and short-term investments)		48,046			67,265
Financial assets (finance lease receivables)		1,185			1,330
Variable rate instruments
Financial assets (cash and short-term deposits)		9,561			9,844
		(36,161	)		(16,993	)

Schedule of Liquidity Risk Estimated Interest Payments of Maturities

The following are the contractual maturities of financial liabilities, including estimated interest payments:

As at December 31, 2017 US$’000	Carryingamount US$’000		Contractualcash flows US$’000		6 mths orless US$’000		6 mths – 12 mths US$’000		1-2 years US$’000		2-5 years US$’000		>5 years US$’000
Financial liabilities
Trade & other payables		20,515		20,515		20,515		—		—		—		—
Exchangeable notes		92,955		115,000		—		—		—		—		115,000
Exchangeable note interest		1,150		126,500		2,300		2,300		4,600		13,800		103,500
		114,620		262,015		22,815		2,300		4,600		13,800		218,500

As at December 31, 2016 US$’000	Carryingamount US$’000		Contractualcash flows US$’000		6 mths orless US$’000		6 mths – 12 mths US$’000		1-2 years US$’000		2-5 years US$’000		>5 years US$’000
Financial liabilities
Trade & other payables		23,607		23,607		22,524		1,083		—		—		—
Exchangeable notes		92,232		115,000		—		—		—		—		115,000
Exchangeable note interest		1,150		131,100		2,300		2,300		4,600		13,800		108,100
		116,989		269,707		24,824		3,383		4,600		13,800		223,100

Schedule of Foreign Currency Risk Short Term Financial Assets and Liabilities

Foreign currency short term financial assets and liabilities which expose the Group to currency risk are disclosed below. The amounts shown are those reported to key management translated into US Dollars at the closing rate:

	EUR			GBP			SEK			CAD			BRL			Other
As at December 31, 2017	US$‘000			US$‘000			US$‘000			US$‘000			US$‘000			US$‘000
Cash		235			443			5			2,107			443			16
Trade and other receivable		1,396			101						298			1,958			6
Trade and other payables		(1,936	)		(16	)		(239	)		(86	)		(2,235	)		—
Total exposure		(305	)		528			(234	)		2,319			166			22
As at December 31, 2016	EUR			GBP			SEK			CAD			BRL			Other
	US$‘000			US$‘000			US$‘000			US$‘000			US$‘000			US$‘000
Cash		214			520			46			845			371			7
Trade and other receivable		852			157			68			414			1,103			—
Trade and other payables		(1,983	)		(29	)		(4,528	)		(85	)		(1,976	)		—
Total exposure		(917	)		648			(4,414	)		1,174			(502	)		7

Schedule of Sensitivity Analysis

A 10% strengthening of the US Dollar against the Euro at December 31, 2017 would have increased profit and other equity by the amounts shown below. This analysis assumes that all other variables, in particular interest rates, remain constant.

	Profit or loss US$’000
December 31, 2017
Euro		2,158
December 31, 2016
Euro		1,093

A 10% weakening of the US Dollar against the Euro at December 31, 2017 would have decreased profit and other equity by the amounts shown below. This analysis assumes that all other variables, in particular interest rates, remain constant.

	Profit or loss US$’000
December 31, 2017
Euro		(2,637	)
December 31, 2016
Euro		(1,336	)

Schedule of Maximum Credit Exposure of Financial Assets

The carrying amount of financial assets represents the maximum credit exposure. The maximum exposure to credit risk is as follows:

	Carrying Value December 31, 2017 US$’000		Carrying Value December 31, 2016 US$’000
Third party trade receivables (Note 17)		17,242		18,340
Finance lease income receivable (Note 17)		1,185		1,330
Cash & cash equivalents (Note 18)		23,564		77,109
Short-term investments (Note 19)		34,043		—
		76,034		96,779

Schedule of Exposure of Trade Receivables by Geographic Location

The maximum exposure to credit risk for trade receivables and finance lease income receivable by geographic location is as follows:

	Carrying ValueDecember 31, 2017US$’000		Carrying Value December 31, 2016 US$’000
United States		8,682		10,201
Euro-zone countries		1,789		1,645
United Kingdom		185		252
Other European countries		21		10
Other regions		7,750		7,562
		18,427		19,670

Schedule of Exposure of Trade Receivables by Customer

The maximum exposure to credit risk for trade receivables and finance lease income receivable by type of customer is as follows:

	Carrying Value December 31, 2017 US$’000		Carrying Value December 31, 2016 US$’000
End-user customers		8,200		11,882
Distributors		10,003		7,127
Non-governmental organisations		224		661
		18,427		19,670

Schedule of Ageing of Trade Receivables

The ageing of trade receivables at December 31, 2017 is as follows:

	Gross		Impairment		Gross		Impairment
	2017		2017		2016		2016
	US$’000		US$’000		US$’000		US$’000
Not past due		10,770		—		12,275		—
Past due 0-30 days		3,190		31		2,741		8
Past due 31-120 days		1,906		50		1,807		67
Greater than 120 days		4,966		3,509		4,688		3,096
		20,832		3,590		21,511		3,171

Schedule of Movement in Allowance for Impairment of Trade Receivables

The movement in the allowance for impairment in respect of trade receivables during the year was as follows:

	2017			2016			2015
	US$’000			US$’000			US$’000
Balance at January 1		3,171			2,812			2,205
Charged to costs and expenses		662			415			780
Amounts written off during the year		(243	)		(56	)		(173	)
Balance at December 31		3,590			3,171			2,812

Schedule of Fair Values of Financial Assets/Liabilities

The table below sets out the Group’s classification of each class of financial assets/liabilities, their fair values and under which valuation method they are valued:

			Level 1			Level 2			Total carrying amount			Fair Value
	Note		US$'000			US$'000			US$'000			US$'000
December 31, 2017
Loans and receivables
Trade receivables		17		17,242			—			17,242			17,242
Cash and cash equivalents		18		23,564			—			23,564			23,564
Short-term investments		19		34,043			—			34,043			34,043
Finance lease receivable		15,17		1,185			—			1,185			1,185
				76,034			—			76,034			76,034
Liabilities at amortised cost
Exchangeable note		24		—			(92,955	)		(92,955	)		(92,955	)
Finance lease payable		25		(886	)		—			(886	)		(886	)
Trade and other payables (excluding deferred income)		22		(20,237	)		—			(20,237	)		(20,237	)
Provisions		23		(50	)		—			(50	)		(50	)
				(21,173	)		(92,955	)		(114,128	)		(114,128	)
Fair value through profit and loss (FVPL)
Exchangeable note bond call option		24		—			360			360			360
Exchangeable note equity conversion option		24		—			(440	)		(440	)		(440	)
Exchangeable note bond put option		24		—			(1,790	)		(1,790	)		(1,790	)
				—			(1,870	)		(1,870	)		(1,870	)
				54,861			(94,825	)		(39,964	)		(39,964	)

For financial reporting purposes, fair value measurements are categorized into Level 1, 2 or 3 based on the degree to which inputs to the fair value measurements are observable and the significance of the inputs to the fair value measurement in its entirety, which are described as follows:

Level 1: quoted prices (unadjusted) in active markets for identical assets or liabilities

Level 2: valuation techniques for which the lowest level of inputs which have a significant effect on the recorded fair value are observable, either directly or indirectly

Level 3: valuation techniques for which the lowest level of inputs that have a significant effect on the recorded fair value are not based on observable market data

	Note		Level 1US$'000			Level 2US$'000			TotalcarryingamountUS$'000			Fair Value US$'000
December 31, 2016
Loans and receivables
Trade receivables		17		18,340			—			18,340			18,340
Cash and cash equivalents		18		77,109			—			77,109			77,109
Finance lease receivable		15,17		1,330			—			1,330			1,330
				96,779			—			96,779			96,779
Liabilities at amortised cost
Exchangeable note		24		—			(92,232	)		(92,232	)		(92,232	)
Finance lease payable		25		(1,005	)		—			(1,005	)		(1,005	)
Trade and other payables (excluding deferred income)		22		(24,533	)		—			(24,533	)		(24,533	)
Provisions		23		(75	)		—			(75	)		(75	)
				(25,613	)		(92,232	)		(117,845	)		(117,845	)
Fair value through profit and loss (FVPL)
Exchangeable note bond call option		24		—			—			—			—
Exchangeable note equity conversion option		24		—			(3,970	)		(3,970	)		(3,970	)
Exchangeable note bond put option		24		—			(290	)		(290	)		(290	)
				—			(4,260	)		(4,260	)		(4,260	)
				71,166			(96,492	)		(25,326	)		(25,326	)