Stock-Based Compensation - Narrative (Details) - shares shares in Thousands		3 Months Ended	12 Months Ended
	Jan. 01, 2016	Mar. 31, 2016	Dec. 31, 2014	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, granted (in shares)		441
2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized under the plan, percentage increase			4.50%
Automatic annual increase in shares	1,750
Shares transferred to new plan		6
Shares available for future issuance under the plan		2,869	5,384	4
Common stock, granted (in shares)		1,601
Shares transferred from the previous plan that expired or terminated		54
2007 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance		9,105
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock reserved for future vesting (in shares)		233
Restricted Stock [Member] | 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock reserved for future vesting (in shares)		968