Income taxes	6 Months Ended
Income taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income taxes	Income taxes The Company recorded income tax expense of $7.5 million and $7.5 million for the three and six months ended June 30, 2020, respectively, and income tax expense of $0.9 million and an income tax benefit of $6.4 million for the three and six months ended June 30, 2019, respectively. The income tax expense for the three months ended June 30, 2020 was calculated under the ASC 740-270 principles. The income tax expense for the three months ended June 30, 2020 differs from the expense computed at the federal statutory rate primarily due to the movement of the valuation allowance recorded in the quarter and state income tax expense. The income tax expense for the six months ended June 30, 2020 differs from the expense computed at the federal statutory rate primarily due to the movement of the valuation allowance recorded in the period and state income tax expense. The income tax expense for the three months ended June 30, 2019 differs from the expense computed at the federal statutory rate primarily due to the unfavorable permanent add-back of the non-deductible one-time executive severance payment, offset by the favorable return-to-provision adjustment recorded in the quarter. The income tax benefit for the six months ended June 30, 2019 differs from the benefit computed at the federal statutory rate primarily due to the unfavorable permanent add-back of the non-deductible one-time executive severance payment, offset by the favorable return-to-provision adjustment recorded in the six months ended June 30, 2019. The Company evaluates the recoverability of its deferred tax assets quarterly to determine if valuation allowances are required or should be adjusted. The Company assesses whether valuation allowances should be established against deferred tax assets based on consideration of all available evidence, both positive and negative, using a “more likely than not” criterion. The analysis used in determining the valuation allowance involves considerable judgment and assumptions. The Company's history of pretax losses limits its ability to rely on projections of future pretax income, therefore, realization of deferred tax assets is based primarily on reversal of taxable temporary differences. After consideration of all evidence, including the analysis of the reversal pattern of the taxable and deductible temporary differences in the future, the Company increased the overall valuation allowance position by $1.0 million for the six months ended June 30, 2020. On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), that, among other things, increased the net interest expense deduction limit from 30% to 50% of adjusted taxable income for tax years beginning January 1, 2019 and 2020, and changed the depreciable life of the qualified improvement property from 39 years to 15 years, thereby making it eligible for 100% bonus depreciation, which the Company intends to claim. The Company has taken, and will continue to take advantage of deferral of the employer portion of the social security taxes that would otherwise be due in 2020, but will be delayed with 50% due by December 31, 2021 and the remaining 50% by December 31, 2022.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.