Financial instruments (Tables)

6 Months Ended

Jun. 26, 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 June 26, 2016 and December 31, 2015:

	June 26, 2016		December 31, 2015
	Fair Value		Fair Value
	(Dollars in thousands)
Asset derivatives:
Designated foreign currency forward contracts	$	1,211	$	285
Non-designated foreign currency forward contracts	455		44
Prepaid expenses and other current assets	$	1,666	$	329
Total asset derivatives	$	1,666	$	329
Liability derivatives:
Designated foreign currency forward contracts	$	3,366	$	807
Non-designated foreign currency forward contracts	1,406		491
Other current liabilities	$	4,772	$	1,298
Total liability derivatives	$	4,772	$	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 six months ended June 26, 2016 and June 28, 2015:

	After Tax Gain (Loss) Recognized in OCI
	Three Months Ended						Six Months Ended
	June 26, 2016			June 28, 2015			June 26, 2016		June 28, 2015
	(Dollars in thousands)
Foreign currency forward contracts	$	(496	)	$	(803	)	$	984	$	(759	)
Total	$	(496	)	$	(803	)	$	984	$	(759	)

Aggregate Accounts Receivable, Net of Allowance for Doubtful Accounts

The aggregate net current and long-term accounts receivable for customers in Greece, Italy, Spain and Portugal and the percentage of the Company’s total net current and long-term accounts receivable represented by the net current and long-term accounts receivable for customers in those countries at June 26, 2016 and December 31, 2015 are as follows:

	June 26, 2016			December 31, 2015
	(Dollars in thousands)
Current and long-term accounts receivable (net of allowances of $7.7 million and $7.2 million at June 26, 2016 and December 31, 2015, respectively) in Greece, Italy, Spain and Portugal (1)	$	65,638		$	62,272
Percentage of total net current and long-term accounts receivable - Greece, Italy, Spain and Portugal	23.4		%	23.9		%

(1)    The long-term portion of accounts receivable, net from customers in Greece, Italy, Spain and Portugal atJune 26, 2016 and December 31, 2015 was $9.6 million and $8.1 million, respectively, and is reported on the condensed consolidated balance sheet in other assets.