Stock Plans - ESPP and Treasury Stock (Details) - USD ($)		12 Months Ended
	Feb. 01, 2012	Dec. 31, 2016	Feb. 04, 2016
Share Repurchase Program 2016
Employee Stock Purchase Plan
Amount authorized to be purchased under stock repurchase program			$ 100,000,000
Number of shares repurchased under program (in shares)		1,300,000
Value of shares repurchased under program		$ 40,000,000
ESPP Plan
Employee Stock Purchase Plan
Term of Employee Stock Purchase Plan	10 years
Total number of shares available for purchase (in shares)	500,000
ESPP participation period	6 months
Percentage of fair market value of common stock	85.00%
Maximum percentage of total combined voting power a participant is allowed to be granted a right to purchase common stock	5.00%
Maximum number of shares authorized for purchase within any purchase period (in shares)	1,000
Maximum value of shares authorized for purchase within any purchase period	$ 25,000