Accounting Pronouncements	6 Months Ended
Jun. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Accounting Pronouncements Accounting Standards Recently Adopted On February 14, 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. It allows a reclassification from accumulated other comprehensive income ("AOCI") to retained earnings of the stranded tax effects that occurred due to the enactment of the Tax Cuts and Jobs Act of 2017 (the "New Tax Act"). The updated guidance is effective for reporting periods beginning after December 15, 2018 and is to be applied retrospectively to each period in which there are items impacted by the New Tax Act remaining in AOCI or at the beginning of the period of adoption. Early adoption is permitted. The Company adopted the updated guidance effective January 1, 2018 and elected to reclassify the income tax effects of the New Tax Act from AOCI to accumulated deficit as of January 1, 2018. This reclassification resulted in an increase in accumulated deficit of $4.7 million as of January 1, 2018 and an increase in AOCI by the same amount. In January 2016, the FASB released ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The updated guidance requires equity investments, except those accounted for under the equity method of accounting, that have readily determinable fair values to be measured at fair value with any changes in fair value recognized in net income. Equity securities that do not have readily determinable fair values may be measured at estimated fair value or cost less impairment, if any, adjusted for subsequent observable price changes, with changes in the carrying value recognized in net income. A qualitative assessment for impairment is required for equity investments without readily determinable fair values. The updated guidance also eliminates the requirement to disclose the method and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost on the balance sheet. The updated guidance was effective for the first quarter ended March 31, 2018. The adoption of this guidance resulted in the recognition of $560,000 of net after-tax unrealized gains on equity investments as a cumulative effect adjustment that decreased retained deficit as of January 1, 2018 and decreased AOCI by the same amount. The Company elected to report changes in the fair value of equity investments in realized investment gains (losses), net. At December 31, 2017, equity investments were classified as available-for-sale on the Company's balance sheet. However, upon adoption, the updated guidance eliminated the available-for-sale balance sheet classification for equity investments. Accounting Standards Not Yet Adopted The FASB’s new lease accounting standard ASU 2016-02, Leases (Topic 842), was issued on February 25, 2016. The ASU will require organizations that lease assets, referred to as “lessees”, to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The ASU also will require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. These disclosures include qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. The accounting by organizations that own the assets leased by the lessee, also known as lessor accounting, will remain largely unchanged from current U.S. GAAP. However, the ASU contains some targeted improvements that are intended to align, where necessary, lessor accounting with the lessee accounting model and with the updated revenue recognition guidance issued in 2014. The ASU on leases will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is assessing the impact of this new standard. In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326), with the main objective to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. Credit losses on available-for-sale debt securities should be measured in a manner similar to current U.S. GAAP; however, the credit losses are recorded through an allowance for credit losses rather than as a write-down. This approach is an improvement to current U.S. GAAP because an entity will be able to record reversals of credit losses (in situations in which the estimate of credit losses declines) in current period net income, which in turn should align the income statement recognition of credit losses with the reporting period in which changes occur. Current U.S. GAAP prohibits reflecting those improvements in current-period earnings. For public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is evaluating the impact this guidance will have on our consolidated financial statements, but it is not expected to have a significant impact on the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20). The amendments in this ASU shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The Company has a large portfolio of callable debt securities purchased at a premium. As such, the Company had already been amortizing the premium to the earliest call date to reduce volatility in earnings by eliminating reporting large realized losses when debt securities are called. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. No other new accounting pronouncement issued or effective during the fiscal year had, or is expected to have, a material impact on our consolidated financial statements.

Accounting Pronouncements

Accounting Standards Recently Adopted

On February 14, 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. It allows a reclassification from accumulated other comprehensive income ("AOCI") to retained earnings of the stranded tax effects that occurred due to the enactment of the Tax Cuts and Jobs Act of 2017 (the "New Tax Act"). The updated guidance is effective for reporting periods beginning after December 15, 2018 and is to be applied retrospectively to each period in which there are items impacted by the New Tax Act remaining in AOCI or at the beginning of the period of adoption. Early adoption is permitted. The Company adopted the updated guidance effective January 1, 2018 and elected to reclassify the income tax effects of the New Tax Act from AOCI to accumulated deficit as of January 1, 2018. This reclassification resulted in an increase in accumulated deficit of $4.7 million as of January 1, 2018 and an increase in AOCI by the same amount.

In January 2016, the FASB released ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The updated guidance requires equity investments, except those accounted for under the equity method of accounting, that have readily determinable fair values to be measured at fair value with any changes in fair value recognized in net income. Equity securities that do not have readily determinable fair values may be measured at estimated fair value or cost less impairment, if any, adjusted for subsequent observable price changes, with changes in the carrying value recognized in net income. A qualitative assessment for impairment is required for equity investments without readily determinable fair values. The updated guidance also eliminates the requirement to disclose the method and significant assumptions used to estimate the fair value of financial instruments measured at amortized cost on the balance sheet. The updated guidance was effective for the first quarter ended March 31, 2018. The adoption of this guidance resulted in the recognition of $560,000 of net after-tax unrealized gains on equity investments as a cumulative effect adjustment that decreased retained deficit as of January 1, 2018 and decreased AOCI by the same amount. The Company elected to report changes in the fair value of equity investments in realized investment gains (losses), net. At December 31, 2017, equity investments were classified as available-for-sale on the Company's balance sheet. However, upon adoption, the updated guidance eliminated the available-for-sale balance sheet classification for equity investments.

Accounting Standards Not Yet Adopted

The FASB’s new lease accounting standard ASU 2016-02, Leases (Topic 842), was issued on February 25, 2016. The ASU will require organizations that lease assets, referred to as “lessees”, to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The ASU also will require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. These disclosures include qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. The accounting by organizations that own the assets leased by the lessee, also known as lessor accounting, will remain largely unchanged from current U.S. GAAP. However, the ASU contains some targeted improvements that are intended to align, where necessary, lessor accounting with the lessee accounting model and with the updated revenue recognition guidance issued in 2014. The ASU on leases will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is assessing the impact of this new standard.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326), with the main objective to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. Credit losses on available-for-sale debt securities should be measured in a manner similar to current U.S. GAAP; however, the credit losses are recorded through an allowance for credit losses rather than as a write-down. This approach is an improvement to current U.S. GAAP because an entity will be able to record reversals of credit losses (in situations in which the estimate of credit losses declines) in current period net income, which in turn should align the income statement recognition of credit losses with the reporting period in which changes occur. Current U.S. GAAP prohibits reflecting those improvements in current-period earnings. For public business entities, the amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is evaluating the impact this guidance will have on our consolidated financial statements, but it is not expected to have a significant impact on the Company's consolidated financial statements.

In March 2017, the FASB issued ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20). The amendments in this ASU shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The Company has a large portfolio of callable debt securities purchased at a premium. As such, the Company had already been amortizing the premium to the earliest call date to reduce volatility in earnings by eliminating reporting large realized losses when debt securities are called. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018.

No other new accounting pronouncement issued or effective during the fiscal year had, or is expected to have, a material impact on our consolidated financial statements.