Stockholders' Equity (Details 2) (Collared Accelerated Repurchase Program [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Feb. 27, 2014
Share Repurchase Program
Common stock repurchase authorized amount	$ 75
Minimum
Share Repurchase Program
Number of shares authorized to be repurchased	1.4
Maximum
Share Repurchase Program
Number of shares authorized to be repurchased	1.7

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant