9. Income taxes	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income taxes	For each interim period, the Company estimates the effective tax rate (“ETR”) expected to be applicable for the full year and applies that rate to income before provision for income taxes for the period. Additionally, the Company records discrete income tax items such as enacted tax rate changes and completed tax audits in the period in which they occur. The effective tax rate for the three months ended September 30, 2017 was 41.9% compared to over 100.0% for the three months ended September 30, 2016. The effective tax rate for the nine months ended September 30, 2017 was 42.9% compared to 33.0% for the nine months ended September 30, 2016.

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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