Taxes on Income	3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]
Taxes on Income	Taxes on Income The Company periodically reviews its tax positions under the accounting standards related to uncertainty in income taxes, which defines the criteria that an individual tax position would have to meet for some or all of the income tax benefit to be recognized in a taxable entity’s financial statements. Under the guidelines, an entity should recognize the financial statement benefit of a tax position if it determines that it is more likely than not that the position will be sustained on examination. The term “more likely than not” means a likelihood of more than 50 percent. In assessing whether the more-likely-than-not criterion is met, the entity should assume that the tax position will be reviewed by the applicable taxing authority and all available information is known to the taxing authority. The Company periodically evaluates its deferred tax assets to determine whether a valuation allowance is required based upon a determination that some or all of the deferred assets may not be ultimately realized. At March 31, 2017 and December 31, 2016, the Company had no recorded valuation allowance. The Company and its subsidiary file income tax returns in the U.S federal jurisdiction, and several states within the U.S. There are no filings in foreign jurisdictions. During 2014, the Company began the process to amend its California state tax returns for the years 2009 through 2012 to file a combined report on a unitary basis with the Company and USB Investment Trust. The amended returns for 2009, 2010, and 2011 were filed in 2014, 2015, and 2016 respectively. The amended return for 2012 was filed during 2016. During the third quarter of 2016, the IRS notified the Company it would be conducting an examination of the Company's 2014 federal return. As of March 31, 2017, the Company is unaware of any change in tax positions as a result of the IRS examination. The Company's policy is to recognize any interest or penalties related to uncertain tax positions in income tax expense. Interest and penalties recognized during the periods ended March 31, 2017 and 2016 were insignificant.

Taxes on Income

3 Months Ended

Mar. 31, 2017

The Company periodically reviews its tax positions under the accounting standards related to uncertainty in income taxes, which defines the criteria that an individual tax position would have to meet for some or all of the income tax benefit to be recognized in a taxable entity’s financial statements. Under the guidelines, an entity should recognize the financial statement benefit of a tax position if it determines that it is more likely than not that the position will be sustained on examination. The term “more likely than not” means a likelihood of more than 50 percent. In assessing whether the more-likely-than-not criterion is met, the entity should assume that the tax position will be reviewed by the applicable taxing authority and all available information is known to the taxing authority.

The Company periodically evaluates its deferred tax assets to determine whether a valuation allowance is required based upon a determination that some or all of the deferred assets may not be ultimately realized. At March 31, 2017 and December 31, 2016, the Company had no recorded valuation allowance.

The Company and its subsidiary file income tax returns in the U.S federal jurisdiction, and several states within the U.S. There are no filings in foreign jurisdictions. During 2014, the Company began the process to amend its California state tax returns for the years 2009 through 2012 to file a combined report on a unitary basis with the Company and USB Investment Trust. The amended returns for 2009, 2010, and 2011 were filed in 2014, 2015, and 2016 respectively. The amended return for 2012 was filed during 2016. During the third quarter of 2016, the IRS notified the Company it would be conducting an examination of the Company's 2014 federal return. As of March 31, 2017, the Company is unaware of any change in tax positions as a result of the IRS examination.

The Company's policy is to recognize any interest or penalties related to uncertain tax positions in income tax expense. Interest and penalties recognized during the periods ended March 31, 2017 and 2016 were insignificant.