Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Sep. 30, 2019	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Federal statutory corporate tax rate	21.00%
Re-measurement of U.S. deferred tax assets and related valuation allowance	$ 0
Transition tax rate, cash and cash equivalents	15.50%
Transition tax rate, other than cash and cash equivalents	8.00%
Transition tax payment period	8 years
Cash payments expected to make related to Transition Tax	$ 0
Maximum [Member]
Income Tax Disclosure [Line Items]
Federal statutory corporate tax rate		35.00%