Condensed Consolidated Statement of Stockholders' Equity - Unaudited - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect adjustment of the adoption of ASU 2016-09	$ (510)		$ (812)		$ 302
Balance, adjusted	724,729	$ 31	637,143	$ (5,834)	109,389	$ (16,000)
Balance, shares at Dec. 30, 2016		31,059		134
Balance at Dec. 30, 2016	725,239	$ 31	637,955	$ (5,834)	109,087	(16,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,349)				(1,349)
Other comprehensive income, net	43,203					43,203
Stock-based compensation	7,950		7,950
Net shares issued, shares		439		31
Net shares issued	8,600	$ 0	7,272	$ 1,328
Balance, shares at Jun. 30, 2017		31,498		103
Balance at Jun. 30, 2017	$ 783,133	$ 31	$ 652,365	$ (4,506)	$ 108,040	$ 27,203