Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Line Items]
Deferred tax assets (liabilities), net	$ 672	$ (1,127)
Income tax provision, other	1,503	(1,131)	(1,960)
Deferred tax liability written off	3,535	0	0
Operating loss carryforwards	2,735	4,156
Valuation allowance	712
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Income tax provision, other	$ 976	$ 1,078	$ 2,042

For entities that net deferred tax assets and tax liabilities, represents the unclassified net amount of deferred tax assets and liabilities as of the balance sheet date, which result from applying the applicable enacted tax rate to net temporary differences and carryforwards pertaining to assets or liabilities. A temporary difference is a difference between the tax basis of an asset or liability and its carrying amount in the financial statements prepared in accordance with generally accepted accounting principles that will reverse in ensuing periods.

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The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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