Income Taxes Tax Years Under Examination (Details)	12 Months Ended
	Dec. 31, 2017
Minimum [Member] | Federal
Income Tax Examination [Line Items]
Open Tax Year	2014
Minimum [Member] | California
Income Tax Examination [Line Items]
Open Tax Year	2013
Minimum [Member] | Arizona
Income Tax Examination [Line Items]
Open Tax Year	2013
Minimum [Member] | Connecticut
Income Tax Examination [Line Items]
Open Tax Year	2014
Minimum [Member] | Tennessee
Income Tax Examination [Line Items]
Open Tax Year	2014
Minimum [Member] | Texas
Income Tax Examination [Line Items]
Open Tax Year	2013
Maximum [Member] | Federal
Income Tax Examination [Line Items]
Open Tax Year	2016
Maximum [Member] | California
Income Tax Examination [Line Items]
Open Tax Year	2016
Maximum [Member] | Arizona
Income Tax Examination [Line Items]
Open Tax Year	2016
Maximum [Member] | Connecticut
Income Tax Examination [Line Items]
Open Tax Year	2014
Maximum [Member] | Tennessee
Income Tax Examination [Line Items]
Open Tax Year	2016
Maximum [Member] | Texas
Income Tax Examination [Line Items]
Open Tax Year	2016