Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Detail) - Fair value, measurements, recurring - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015
Assets:
Cash equivalents, consisting primarily of money market accounts and short-term certificates of deposit	$ 0	$ 90
Marketable trading securities	52,371	56,616
Derivative assets	31,344	31,213
Total assets at fair value	83,715	87,919
Liabilities:
Derivative liabilities	5,666	1,793
Contingent consideration	6,128	7,647
Total liabilities at fair value	11,794	9,440
Level 1
Assets:
Cash equivalents, consisting primarily of money market accounts and short-term certificates of deposit	0	90
Marketable trading securities	52,371	56,616
Derivative assets	0	0
Total assets at fair value	52,371	56,706
Liabilities:
Derivative liabilities	0	0
Contingent consideration	0	0
Total liabilities at fair value	0	0
Level 2
Assets:
Cash equivalents, consisting primarily of money market accounts and short-term certificates of deposit	0	0
Marketable trading securities	0	0
Derivative assets	31,344	31,213
Total assets at fair value	31,344	31,213
Liabilities:
Derivative liabilities	5,666	1,793
Contingent consideration	0	0
Total liabilities at fair value	5,666	1,793
Level 3
Assets:
Cash equivalents, consisting primarily of money market accounts and short-term certificates of deposit	0	0
Marketable trading securities	0	0
Derivative assets	0	0
Total assets at fair value	0	0
Liabilities:
Derivative liabilities	0	0
Contingent consideration	6,128	7,647
Total liabilities at fair value	$ 6,128	$ 7,647