Financial Instruments Measured at Fair Value (Tables)

6 Months Ended

Jul. 01, 2017

Fair Value Disclosures [Abstract]

Description of Types of Interest Rate Fair Value Hedging Instruments Used

The terms of our outstanding interest rate swap contracts at July 1, 2017 are as follows:

Maturity Date	Notional Amount	Interest rate due from counterparty	Interest rate due to counterparty
April 2020	50,000	6.000%	6 mo. USD LIBOR + 3.896%

Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis Table [Text Block]

The following table presents assets (liabilities) measured at fair value on a recurring basis at July 1, 2017:

	Balance Sheet Location	Level 1		Level 2			Level 3			Total
Cash equivalents	Other assets	$	893	$	—		$	—		$	893
Available-for-sale securities	Other assets	43,481		—			—			43,481
Interest rate swaps	Other assets	—		300			—			300
Foreign exchange contracts	Other current assets	—		6,490			—			6,490
Foreign exchange contracts	Accrued expenses	—		(8,714		)	—			(8,714		)
Contingent consideration	Accrued expenses / Other liabilities	—		—			(2,959		)	(2,959		)
		$	44,374	$	(1,924	)	$	(2,959	)	$	39,491

The following table presents assets (liabilities) measured at fair value on a recurring basis at December 31, 2016:

	Balance Sheet Location	Level 1		Level 2			Level 3			Total
Cash equivalents	Other assets	$	2,660	$	—		$	—		$	2,660
Available-for-sale securities	Other assets	37,915		—			—			37,915
Interest rate swaps	Other assets	—		152			—			152
Foreign exchange contracts	Other current assets	—		4,685			—			4,685
Foreign exchange contracts	Accrued expenses	—		(3,444		)	—			(3,444		)
Contingent consideration	Accrued expenses / Other liabilities	—		—			(4,027		)	(4,027		)
		$	40,575	$	1,393		$	(4,027	)	$	37,941

Available-for-sale Securities [Text Block]

The fair value of the company's available-for-sale securities is as follows:

	July 1, 2017				December 31, 2016
	Marubun		Mutual Funds		Marubun		Mutual Funds
Cost basis	$	10,016	$	18,320	$	10,016	$	18,097
Unrealized holding gain	6,446		8,699		3,806		5,996
Fair value	$	16,462	$	27,019	$	13,822	$	24,093

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]

The effects of derivative instruments on the company's consolidated statements of operations and other comprehensive income are as follows:

	Quarter Ended						Six Months Ended
	July 1, 2017			July 2, 2016			July 1, 2017			July 2, 2016
Gain (Loss) Recognized in Income
Foreign exchange contracts	$	(2,223	)	$	4,191		$	(11,162	)	$	521
Interest rate swaps	(163		)	(150		)	(321		)	(299		)
Total	$	(2,386	)	$	4,041		$	(11,483	)	$	222
Gain (Loss) Recognized in Other Comprehensive Income before reclassifications
Foreign exchange contracts	$	(1,043	)	$	543		$	(867	)	$	(534	)
Interest rate swaps	$	(1,053	)	$	—		$	(1,053	)	$	—