Financial instruments (Tables)

9 Months Ended

Sep. 25, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Values of Derivative Instruments Designated as Hedging Instruments

The following table presents the location and fair value of derivative financial instruments reported in the condensed consolidated balance sheet as of September 25, 2016 and December 31, 2015:



	September 25, 2016		December 31, 2015
	Fair Value		Fair Value
	(Dollars in thousands)
Asset derivatives:
Designated foreign currency forward contracts	$	615	$	285
Non-designated foreign currency forward contracts	519		44
Prepaid expenses and other current assets	$	1,134	$	329
Total asset derivatives	$	1,134	$	329
Liability derivatives:
Designated foreign currency forward contracts	$	2,369	$	807
Non-designated foreign currency forward contracts	34		491
Other current liabilities	$	2,403	$	1,298
Total liability derivatives	$	2,403	$	1,298

After Tax Gain (Loss) Recognized in OCI

The following table provides information as to the gains and losses attributable to derivatives in cash flow hedging relationships that were reported in other comprehensive income (loss) (“OCI”) for the three and nine months ended September 25, 2016 and September 27, 2015:



	After Tax Gain (Loss) Recognized in OCI
	Three Months Ended						Nine Months Ended
	September 25, 2016			September 27, 2015			September 25, 2016		September 27, 2015
	(Dollars in thousands)
Foreign currency forward contracts	$	(223	)	$	(730	)	$	761	$	(1,489	)

Aggregate Accounts Receivable, Net of Allowance for Doubtful Accounts

The aggregate net current and long-term trade accounts receivable for customers in Greece, Italy, Spain and Portugal and the percentage of the Company’s total net current and long-term trade accounts receivable represented by the net current and long-term trade accounts receivable for customers in those countries at September 25, 2016 and December 31, 2015 are as follows:



	September 25, 2016			December 31, 2015
	(Dollars in thousands)
Current and long-term trade accounts receivable (net of allowances of $8.0 million and $7.2 million at September 25, 2016 and December 31, 2015, respectively) in Greece, Italy, Spain and Portugal (1)	$	59,785		$	62,272
Percentage of total net current and long-term trade accounts receivable - Greece, Italy, Spain and Portugal	22.9		%	23.9		%

(1) The long-term portion of trade accounts receivable, net from customers in Greece, Italy, Spain and Portugal at September 25, 2016 and December 31, 2015 was $7.7 million and $8.1 million, respectively, and is reported on the condensed consolidated balance sheet in other assets.