Stockholders' Equity - Share Repurchase Program and Secondary Offerings (Details) - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2017	Sep. 29, 2017	Dec. 29, 2017	Feb. 28, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share repurchase program, authorized amount				$ 40,000,000
Stock issuance costs incurred during period		$ 113,000
Class of Stock [Line Items]
Shares issued during period	5,574
Share price (in dollars per share)	$ 26.65
Underwriters' Option
Class of Stock [Line Items]
Shares issued during period	466
2016 Repurchase Program
Class of Stock [Line Items]
Shares repurchased during period (in shares)			890
Shares repurchased during period, amount			$ 13,754,000