Fair Value Measurements (Embedded Derivative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
Fair Value Measurements [Abstract]
Beginning Balance
Initial fair value of embedded derivative - bifurcated from mezzanine equity	$ (183,095)
(Losses) on embedded derivative	(9,982)
Ending Balance	(193,077)
(Losses) included in earnings related to derivatives still held as of December 31, 2015, and 2014	$ (9,982)

Initial fair value of the embedded derivative or group of embedded derivatives classified as a liability - bifurcated from mezzanine equity.

No definition available.

+ Details

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Namespace Prefix:	spp_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

+ Details

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Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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