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Stockholders' Equity (Details 2) (Collared Accelerated Repurchase Program, 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
Share Repurchase Program
Number of shares authorized to be repurchased		1.4

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of a stock repurchase plan authorized by an entity's Board of Directors.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

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

+ References

No definition available.

+ Details

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