XML 147 R129.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair value of financial instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI $ 25,135 $ 30,607
Total derivative financial instrument used for hedging - receivable 13,338 9,352
Total financial assets at fair value 38,473 39,959
Total financial instruments at FVTPL 0 24
Total derivative financial instruments used for hedging - payable 34,943 59,686
Total financial liabilities at fair value 34,943 59,710
Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [1] 25,135 27,821
Total derivative financial instrument used for hedging - receivable [1] 0 0
Total financial assets at fair value [1] 25,135 27,821
Total financial instruments at FVTPL [1]   0
Total derivative financial instruments used for hedging - payable [1] 0 0
Total financial liabilities at fair value [1] 0 0
Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [2] 0 2,786
Total derivative financial instrument used for hedging - receivable [2] 13,338 9,352
Total financial assets at fair value [2] 13,338 12,138
Total financial instruments at FVTPL [2]   24
Total derivative financial instruments used for hedging - payable [2] 34,943 59,686
Total financial liabilities at fair value [2] 34,943 59,710
Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [3] 0 0
Total derivative financial instrument used for hedging - receivable [3] 0 0
Total financial assets at fair value [3] 0 0
Total financial instruments at FVTPL [3]   0
Total derivative financial instruments used for hedging - payable [3] 0 0
Total financial liabilities at fair value [3] 0 0
Interest rate swaps [Member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable 129 363
Total derivative financial instruments used for hedging - payable 4,789 3,704
Interest rate swaps [Member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [1] 0 0
Total derivative financial instruments used for hedging - payable [1] 0 0
Interest rate swaps [Member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [2] 129 363
Total derivative financial instruments used for hedging - payable [2] 4,789 3,704
Interest rate swaps [Member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [3] 0 0
Total derivative financial instruments used for hedging - payable [3] 0 0
Cross-currency interest rate swaps [Member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable 4,550 2,561
Total derivative financial instruments used for hedging - payable 30,154 46,198
Cross-currency interest rate swaps [Member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [1] 0 0
Total derivative financial instruments used for hedging - payable [1] 0 0
Cross-currency interest rate swaps [Member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [2] 4,550 2,561
Total derivative financial instruments used for hedging - payable [2] 30,154 46,198
Cross-currency interest rate swaps [Member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [3] 0 0
Total derivative financial instruments used for hedging - payable [3] 0 0
Foreign exchange forward [Member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable 8,659 6,428
Total financial instruments at FVTPL   24
Total derivative financial instruments used for hedging - payable   9,784
Foreign exchange forward [Member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [1] 0 0
Total financial instruments at FVTPL [1]   0
Total derivative financial instruments used for hedging - payable [1]   0
Foreign exchange forward [Member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [2] 8,659 6,428
Total financial instruments at FVTPL [2]   24
Total derivative financial instruments used for hedging - payable [2]   9,784
Foreign exchange forward [Member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total derivative financial instrument used for hedging - receivable [3] 0 0
Total financial instruments at FVTPL [3]   0
Total derivative financial instruments used for hedging - payable [3]   0
Corporate debt [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI   13,909
Corporate debt [member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [1]   13,909
Corporate debt [member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [2]   0
Corporate debt [member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [3]   0
Sovereign debt [Member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI 16,733 [4] 16,698
Sovereign debt [Member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [1] 16,733 [4] 13,912
Sovereign debt [Member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [2] 0 [4] 2,786
Sovereign debt [Member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [3] 0 [4] $ 0
Equity investments [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI 8,402  
Equity investments [member] | Level 1 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [1] 8,402  
Equity investments [member] | Level 2 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [2] 0  
Equity investments [member] | Level 3 of fair value hierarchy [member]    
Disclosure of Fair value of financial instruments [Line Items]    
Total securities at fair value through OCI [3] $ 0  
[1] Level 1: Quoted market prices in an active market.
[2] Level 2: Quoted market prices in an inactive market or internally developed models with significant observable market.
[3] Level 3: Internally developed models with significant unobservable market information.
[4] At December 31, 2017, securities at fair value through OCI for $2,955 were reclassified from level 2 to level 1 of the fair value hierarchy given that Bloomberg's valuation "BVAL" for these values increased from 7 (in 2016) to 10 (in 2017).