Changes in Accumulated Other Comprehensive Income Textuals (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income and Expenses [Abstract]
Amount of gain (loss) reclassified from accumulated other comprehensive income	$ 0	$ 0	$ 0	$ 0