Earnings Per Share - Dilutive (Details) - Convertible Notes Due in 2019 [Member] shares in Thousands	6 Months Ended
Jun. 30, 2016 $ / shares shares
Dilutive Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Price \| $ / shares	$ 2.25
Outstanding common stock equivalents \| shares	9,900

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 40
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1930-109256

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