Changes in Accumulated Other Comprehensive Income (Loss) (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassifications out of AOCI	$ 0	$ 0

Amount after tax of reclassification adjustments of other comprehensive income (loss).

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