Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes: The Company’s effective tax rate for the three and six-month periods ended June 30, 2016 and 2017 was 0% as a result of the Company recording a full valuation allowance against the deferred tax assets. In determining the realizability of the net U.S. federal and state deferred tax assets, the Company considers numerous factors including historical profitability, estimated future taxable income, prudent and feasible tax planning strategies and the industry in which it operates. Management reassesses the realization of the deferred tax assets each reporting period, which resulted in a valuation allowance against the full amount of the Company’s U.S. deferred tax assets for the three- and six-month periods ended June 30, 2016 and 2017. To the extent that the financial results of the U.S. operations improve in the future and the deferred tax assets become realizable, the Company will reduce the valuation allowance through earnings. Under Section 382 of the Internal Revenue Code of 1986, as amended, substantial changes in the Company's ownership may limit the amount of net operating loss carryforwards that could be utilized annually in the future to offset taxable income. Any such annual limitation may significantly reduce the utilization of the net operating losses before they expire. A Section 382 limitation study performed as of March 31, 2017 determined there was an ownership change in 2006 and $1,538 of the 2006 net operating loss is unavailable. Net operating loss carryforwards are available to offset federal taxable income and begin to expire in 2025. Net operating loss carryforwards for states range from 5 to 20 years. As of December 31, 2016 the Company has accumulated approximately $84,973 of federal tax losses and $4,133 (tax effected) of state tax losses. The Company’s material income tax jurisdiction is the United States (federal). As a result of net operating loss carryforwards, the Company is subject to audit for tax years 2005 and forward for federal purposes. There are tax years which remain subject to examination in various other jurisdictions that are not material to the Company’s financial statements.

Income Taxes:

The Company’s effective tax rate for the three and six-month periods ended June 30, 2016 and 2017 was 0% as a result of the Company recording a full valuation allowance against the deferred tax assets.

In determining the realizability of the net U.S. federal and state deferred tax assets, the Company considers numerous factors including historical profitability, estimated future taxable income, prudent and feasible tax planning strategies and the industry in which it operates. Management reassesses the realization of the deferred tax assets each reporting period, which resulted in a valuation allowance against the full amount of the Company’s U.S. deferred tax assets for the three- and six-month periods ended June 30, 2016 and 2017. To the extent that the financial results of the U.S. operations improve in the future and the deferred tax assets become realizable, the Company will reduce the valuation allowance through earnings.

Under Section 382 of the Internal Revenue Code of 1986, as amended, substantial changes in the Company's ownership may limit the amount of net operating loss carryforwards that could be utilized annually in the future to offset taxable income. Any such annual limitation may significantly reduce the utilization of the net operating losses before they expire. A Section 382 limitation study performed as of March 31, 2017 determined there was an ownership change in 2006 and $1,538 of the 2006 net operating loss is unavailable.

Net operating loss carryforwards are available to offset federal taxable income and begin to expire in 2025. Net operating loss carryforwards for states range from 5 to 20 years. As of December 31, 2016 the Company has accumulated approximately $84,973 of federal tax losses and $4,133 (tax effected) of state tax losses.

The Company’s material income tax jurisdiction is the United States (federal). As a result of net operating loss carryforwards, the Company is subject to audit for tax years 2005 and forward for federal purposes. There are tax years which remain subject to examination in various other jurisdictions that are not material to the Company’s financial statements.