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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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General - Basis of Presentation (Details) (USD $)	1 Months Ended	3 Months Ended
General - Basis of Presentation (Details) (USD $)	Jun. 30, 2011	Mar. 31, 2013 park	Mar. 31, 2012	Dec. 31, 2012
Number of parks owned or operated		18
Ownership interest in joint venture (as a percent)		49.00%
Reorganization Items
(Recoveries) costs and expenses related to the reorganization		$ (180,000)	$ 554,000
Net cash paid for reorganization items, entirely constituting professional fees		332,000	497,000
Income Taxes
Valuation allowance related to deferred tax asset, primarily consisting of certain state net operating loss and other tax carryforwards		173,700,000		169,900,000
Liability of accrued interest and penalties attributable to income taxes		$ 0
Earnings (Loss) Per Common Share
Stock split ratio	2
Antidilutive stock options excluded from computation of diluted shares outstanding (in shares)		4,728,000	5,324,000
Maximum
Accounting for the Chapter 11 Filing
Former shareholders' ownership interest in SFI after emerging from bankruptcy (as a percent)		50.00%
United States
Number of parks owned or operated		16
Mexico
Number of parks owned or operated		1
Canada
Number of parks owned or operated		1