INCOME TAXES AND DEFERRED TAXES

The Company files a consolidated income tax return including all of its wholly-owned subsidiaries on a calendar year basis. Income taxes are accounted for using the asset and liability method. Under this method, a deferred tax asset or liability is determined based on the enacted tax rates which will be in effect when the differences between the financial statement carrying amounts and tax basis of existing assets and liabilities are expected to be reported in the Company’s income tax returns. The effect on deferred taxes of a change in tax rates is recognized in income in the period of change. A valuation allowance is recognized as a reduction to deferred tax assets when management determines it is more likely than not that deferred tax assets will not be available to offset future income tax liabilities.

Accounting standards for income taxes prescribe a recognition threshold and measurement process for financial statement recognition and measurement of uncertain tax positions taken or expected to be taken in a tax return, and also provide guidance on the de-recognition of previously recorded benefits and their classification, as well as the proper recording of interest and penalties, accounting in interim periods, disclosures and transition. The Company periodically reviews its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This review takes into consideration the status of current taxing authorities’ examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment.

As of September 30, 2018, the Company had an insignificant amount of unrecognized tax benefits for uncertain tax positions, none of which would materially affect the effective tax rate if recognized. The Company does not anticipate that the amount of unrecognized tax benefits will significantly increase or decrease in the next twelve months. The Company’s policy is to recognize interest and penalties on unrecognized tax benefits in the income tax expense. The Company files consolidated income tax returns in the U.S. federal jurisdiction and in the Oregon, California, Utah, Idaho and Montana state jurisdictions.

In December 2017, the federal government enacted the 2017 Tax Act, which among other provisions, reduced the federal marginal corporate income tax rate from 35% to 21%. As a result of the passage of the 2017 Tax Act, the Company recorded a $42.6 million charge in December 2017, for the revaluation of its net deferred tax to account for the future impact of the decrease in the corporate income tax rate and other provisions of the legislation. The charge was recorded as an increase to tax expense and reduction of the net deferred asset. The Company’s 2017 financial results reflected the income tax effects of the 2017 Tax Act for which the accounting was complete and provisional amounts for those specific income tax effects of the 2017 Tax Act for which the accounting is incomplete but a reasonable estimate could be determined. As a result, these amounts could be adjusted during the measurement period, which will end in December 2018. The Company did not identify any items for which the income tax effects of the 2017 Tax Act have not been completed and a reasonable estimate could not be determined as of December 31, 2017. The $42.6 million charge recorded by the Company includes $4.2 million of provisional income tax expense related to Alternative Minimum Tax (AMT) credits that are limited under Section 383 of the Internal Revenue Code of 1986 (Code), which resulted in a reduction in the AMT deferred tax asset. The utilization of the limited AMT credits under the refundable AMT credit law is uncertain and will require further analysis as guidance is released during 2018. No adjustment to the provisional amounts was recorded during the nine months ended September 30, 2018.

Tax credit investments: The Company invests in low income housing tax credit funds that are designed to generate a return primarily through the realization of federal tax credits. The Company accounts for these investments by amortizing the cost of tax credit investments over the life of the investment using a proportional amortization method and tax credit investment amortization expense is a component of the provision for income taxes.

The following table presents the balances of the Company’s tax credit investments and related unfunded commitments at September 30, 2018 and December 31, 2017 (in thousands):



	September 30, 2018		December 31, 2017
Tax credit investments	$	8,648	$	7,311
Unfunded commitments—tax credit investments	4,361		4,417

The following table presents other information related to the Company's tax credit investments for the three and nine months ended September 30, 2018 and 2017 (in thousands):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Tax credits and other tax benefits recognized	$	364	$	285	$	1,092	$	855
Tax credit amortization expense included in provision for income taxes	288		199		863		597