Fair Value Measurements Narrative (Details) (USD $)	3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [Abstract]
Net income	$ 793,000
Long-lived assets, currently not in use	$ 8,200,000

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And (Liability) Gain (Loss) Included In Earnings

No definition available.

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Balance Type:	credit
Period Type:	duration