Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Various U.S. state tax loss carryforwards	$ 6,551	$ 6,713
Ownership percentage of subsidiaries included in tax return (more than 80%)	80.00%
Valuation allowance	$ 4,439	3,900
Unrecognized tax benefits	515	1,523	$ 1,744	$ 3,122
Unrecognized tax benefits, penalties and interest expense	(74)	(28)
Unrecognized tax benefits, penalties and interest accrued	145	$ 219
Reasonably possible amount recognized over next 12 months	$ 170

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

+ References

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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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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Ownership Threshold of U.S. to Subsidiaries to Consolidate Income Taxes Return

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