Stockholders' Equity (Details 2) (Collared Accelerated Repurchase Program [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Jul. 21, 2014	Feb. 27, 2014
Share Repurchase Program
Common stock repurchase authorized amount	$ 0.2	$ 75.0
Minimum [Member]
Share Repurchase Program
Number of shares authorized to be repurchased		1.4

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