Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes The Company’s income tax provision for the three and six months ended June 30, 2016 and 2015 reflects its estimate of the effective tax rates expected to be applicable for the full years, adjusted for any discrete events that are recorded in the period in which they occur. The estimates are reevaluated each quarter based on the estimated tax expense for the full year. The tax provision for the three and six months ended June 30, 2016 and 2015 is primarily related to foreign income taxes associated with our Canadian operations, changes in deferred tax liabilities associated with amortization of United States tax deductible goodwill and state taxes in certain states in which the Company does not file on a consolidated basis. The Company has historically incurred operating losses in the United States and, given its cumulative losses and limited history of profits, has recorded a valuation allowance against its United States net deferred tax assets, exclusive of tax deductible goodwill, at June 30, 2016 and 2015. The Company has reflected any uncertain tax positions within its current taxes payable, but none in deferred taxes. Federal, state, and foreign income tax returns have been filed in jurisdictions with varying statutes of limitations. Varying among the separate companies, tax years 1998 through 2015 remain subject to examination by federal and most state tax authorities due to our net operating loss carryforwards. In the foreign jurisdictions, tax years 2008 through 2015 remain subject to examination.

Income Taxes

6 Months Ended

Jun. 30, 2016

5. Income Taxes

The Company’s income tax provision for the three and six months ended June 30, 2016 and 2015 reflects its estimate of the effective tax rates expected to be applicable for the full years, adjusted for any discrete events that are recorded in the period in which they occur. The estimates are reevaluated each quarter based on the estimated tax expense for the full year. The tax provision for the three and six months ended June 30, 2016 and 2015 is primarily related to foreign income taxes associated with our Canadian operations, changes in deferred tax liabilities associated with amortization of United States tax deductible goodwill and state taxes in certain states in which the Company does not file on a consolidated basis. The Company has historically incurred operating losses in the United States and, given its cumulative losses and limited history of profits, has recorded a valuation allowance against its United States net deferred tax assets, exclusive of tax deductible goodwill, at June 30, 2016 and 2015.

The Company has reflected any uncertain tax positions within its current taxes payable, but none in deferred taxes. Federal, state, and foreign income tax returns have been filed in jurisdictions with varying statutes of limitations. Varying among the separate companies, tax years 1998 through 2015 remain subject to examination by federal and most state tax authorities due to our net operating loss carryforwards. In the foreign jurisdictions, tax years 2008 through 2015 remain subject to examination.