Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes On December 22, 2017, the U.S. federal government enacted the Tax Cuts and Jobs Act (the “Tax Reform”), which became effective as of January 1, 2018. The Tax Reform lowered the U.S. corporate statutory income tax rate from 35% to 21%, implemented a modified territorial tax system and imposed a one-time tax on deemed repatriated earnings of foreign subsidiaries, which the Corporation recorded in the fourth quarter of 2017. Initially, no cash outlay due to the Tax Reform was expected as the Corporation had generated sufficient net operating losses in 2017. However, in 2018, the Internal Revenue Service issued additional guidance allowing the taxpayer to elect to exclude the deemed repatriated earnings from the computation of net operating losses generated in tax year 2017. The Corporation will avail itself of the election and, as a result, the Corporation will be able to utilize a larger net operating loss carryback, increasing the amount of income tax refund available to it. The Corporation will remain liable for the one-time tax on the Corporation’s deemed repatriated earnings, which it plans to pay over a period of eight years, as prescribed in the statute. In response to the Tax Reform, Staff Accounting Bulletin No. 118 (SAB 118) was issued in 2018 to address the application of US GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Reform. As of December 31, 2017, in accordance with SAB 118, the Corporation had made a reasonable estimate of the: (i) one-time repatriation transition tax; (ii) increased bonus depreciation for assets placed in service on or after September 27, 2017; and (iii) effects on the Corporation’s existing deferred tax balances, but had not completed its full accounting for the tax effects of the Tax Reform. The Corporation anticipates U.S. regulatory agencies may issue further regulations, which may alter this estimate. Accordingly, the Corporation will continue to analyze the Tax Reform and refine its provisional amounts, which could potentially impact the measurement of its tax balances. Any such revisions will be treated in accordance with the measurement period guidance outlined in SAB 118. Additionally, the Corporation is continuing to analyze its earnings and profits in foreign jurisdictions and its deferred tax balances. In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of the Tax Reform. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The guidance indicates that either accounting for deferred taxes related to GILTI inclusions or to treating any taxes on GILTI inclusions as period cost are both acceptable methods, subject to an accounting policy election. The Corporation is still evaluating the GILTI provisions and has not yet elected an accounting policy for GILTI. The final determination of the tax effects of enactment of the Tax Reform will be completed within the measurement period of up to one year from the enactment date as permitted by SAB 118. Any adjustments to provisional amounts that are identified during the measurement period will be recorded in the reporting period in which the adjustment is determined.

13. Income Taxes

On December 22, 2017, the U.S. federal government enacted the Tax Cuts and Jobs Act (the “Tax Reform”), which became effective as of January 1, 2018. The Tax Reform lowered the U.S. corporate statutory income tax rate from 35% to 21%, implemented a modified territorial tax system and imposed a one-time tax on deemed repatriated earnings of foreign subsidiaries, which the Corporation recorded in the fourth quarter of 2017. Initially, no cash outlay due to the Tax Reform was expected as the Corporation had generated sufficient net operating losses in 2017. However, in 2018, the Internal Revenue Service issued additional guidance allowing the taxpayer to elect to exclude the deemed repatriated earnings from the computation of net operating losses generated in tax year 2017. The Corporation will avail itself of the election and, as a result, the Corporation will be able to utilize a larger net operating loss carryback, increasing the amount of income tax refund available to it. The Corporation will remain liable for the one-time tax on the Corporation’s deemed repatriated earnings, which it plans to pay over a period of eight years, as prescribed in the statute.

In response to the Tax Reform, Staff Accounting Bulletin No. 118 (SAB 118) was issued in 2018 to address the application of US GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Reform. As of December 31, 2017, in accordance with SAB 118, the Corporation had made a reasonable estimate of the: (i) one-time repatriation transition tax; (ii) increased bonus depreciation for assets placed in service on or after September 27, 2017; and (iii) effects on the Corporation’s existing deferred tax balances, but had not completed its full accounting for the tax effects of the Tax Reform. The Corporation anticipates U.S. regulatory agencies may issue further regulations, which may alter this estimate. Accordingly, the Corporation will continue to analyze the Tax Reform and refine its provisional amounts, which could potentially impact the measurement of its tax balances. Any such revisions will be treated in accordance with the measurement period guidance outlined in SAB 118. Additionally, the Corporation is continuing to analyze its earnings and profits in foreign jurisdictions and its deferred tax balances.

In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of the Tax Reform. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The guidance indicates that either accounting for deferred taxes related to GILTI inclusions or to treating any taxes on GILTI inclusions as period cost are both acceptable methods, subject to an accounting policy election. The Corporation is still evaluating the GILTI provisions and has not yet elected an accounting policy for GILTI.

The final determination of the tax effects of enactment of the Tax Reform will be completed within the measurement period of up to one year from the enactment date as permitted by SAB 118. Any adjustments to provisional amounts that are identified during the measurement period will be recorded in the reporting period in which the adjustment is determined.