Income Taxes	3 Months Ended
Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes The 2017 Tax Act was enacted in December 2017. The 2017 Tax Act, among other things, reduces the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018, creates new taxes on certain foreign earnings and may require companies to pay a one-time transition tax on undistributed earnings of certain foreign subsidiaries that were previously tax deferred. The Company is not required to pay a one-time transition tax on earnings of our foreign subsidiaries since the Company had no accumulated foreign losses on a consolidated basis. As a result of the 2017 Tax Act, during the three months ended December 31, 2017, the Company revalued its U.S. deferred tax assets based on the new U.S. federal tax rate of 21%, which resulted in a reduction to its deferred tax assets of approximately $8.1 million. The reduction in deferred tax assets was completely offset by a like reduction to the valuation allowance. The Company’s effective tax rates for the three months ended December 31, 2018 and 2017 were (0.1)% and (0.1)%, respectively. The United States statutory rate for the three months ended December 31, 2018 and 2017 was 21% and 24.5% (blended), respectively. Compared to the United States statutory tax rate, the lower effective tax rates resulted primarily from the provision of a valuation allowance against the Company’s U.S. and Canadian deferred tax assets, due to the uncertainty surrounding the Company’s ability to utilize such deferred tax assets in the future to offset taxable income.

Income Taxes

3 Months Ended

Dec. 31, 2018

14. Income Taxes

The 2017 Tax Act was enacted in December 2017. The 2017 Tax Act, among other things, reduces the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018, creates new taxes on certain foreign earnings and may require companies to pay a one-time transition tax on undistributed earnings of certain foreign subsidiaries that were previously tax deferred. The Company is not required to pay a one-time transition tax on earnings of our foreign subsidiaries since the Company had no accumulated foreign losses on a consolidated basis. As a result of the 2017 Tax Act, during the three months ended December 31, 2017, the Company revalued its U.S. deferred tax assets based on the new U.S. federal tax rate of 21%, which resulted in a reduction to its deferred tax assets of approximately $8.1 million. The reduction in deferred tax assets was completely offset by a like reduction to the valuation allowance.

The Company’s effective tax rates for the three months ended December 31, 2018 and 2017 were (0.1)% and (0.1)%, respectively. The United States statutory rate for the three months ended December 31, 2018 and 2017 was 21% and 24.5% (blended), respectively. Compared to the United States statutory tax rate, the lower effective tax rates resulted primarily from the provision of a valuation allowance against the Company’s U.S. and Canadian deferred tax assets, due to the uncertainty surrounding the Company’s ability to utilize such deferred tax assets in the future to offset taxable income.