Organization and Summary of Significant Accounting Policies (Correction of Immaterial Errors) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					12 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Correction of Immaterial Errors [Member]	Dec. 31, 2009 Correction of Immaterial Errors [Member]	Dec. 31, 2012 Review of Realizability of Deferred Tax Assets [Member]	Dec. 31, 2010 Review of Realizability of Deferred Tax Assets [Member]	Dec. 31, 2009 Review of Realizability of Deferred Tax Assets [Member]	Dec. 31, 2011 Review of Realizability of Deferred Tax Assets [Member]	Dec. 31, 2012 Review of Realizability of Remaining Deferred Tax Assets [Member]
Reserves	$ 3,735	$ 11,035			$ 10,350
Increase (Decrease) in Deferred Tax Assets				(10,350)
Valuation Allowance, Deferred Tax Asset, Change in Amount	(18,021)	0		(10,350)		(6,493)				(1,178)
Deferred Tax Assets, Gross	15,437	27,200					3,104	3,104	3,104
Deferred Income Tax Benefit, Understated Amount							3,121	3,372
Deferred Tax Assets, Net, Understated Amount							6,493		6,493
Deferred income tax expense (benefit)	$ 732	$ 884	$ (2,544)			$ (6,493)				$ (1,178)