Income Taxes, AMT Credits Carryforwards (Details) - USD ($)		1 Months Ended	3 Months Ended
		Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
AMT Credit Carryforwards Available [Abstract]
AMT Credits carryforwards		$ 10,741,000	$ 10,741,000
Alternative Minimum Tax ("AMT") Credit Carryforwards Projected to be Claimed as Refundable for Each Tax Year [Abstract]
Income taxes refunded (paid)		10,741,000	10,741,000	$ 0
Alternative Minimum Tax (AMT) Credit Carryforward [Member]
Alternative Minimum Tax ("AMT") Credit Carryforwards Projected to be Claimed as Refundable for Each Tax Year [Abstract]
AMT credit carryforward amount(s) projected to be claimed as refundable for each tax year	[1],[2]	10,741,000	10,741,000
Alternative Minimum Tax (AMT) Credit Carryforward [Member] | Tax Year 2019 [Member]
Alternative Minimum Tax ("AMT") Credit Carryforwards Projected to be Claimed as Refundable for Each Tax Year [Abstract]
Declining balance of the AMT credit carryforward amount(s) available for each tax year	[1],[2]	10,741,000	$ 10,741,000
% of AMT credit carryforward amount(s) available to be claimed as refundable for each tax year			50.00%
AMT credit carryforward amount(s) projected to be claimed as refundable for each tax year	[1],[2]	5,371,000	$ 5,371,000
Alternative Minimum Tax (AMT) Credit Carryforward [Member] | Tax Year 2020 [Member]
Alternative Minimum Tax ("AMT") Credit Carryforwards Projected to be Claimed as Refundable for Each Tax Year [Abstract]
Declining balance of the AMT credit carryforward amount(s) available for each tax year	[1],[2]	5,371,000	$ 5,371,000
% of AMT credit carryforward amount(s) available to be claimed as refundable for each tax year			50.00%
AMT credit carryforward amount(s) projected to be claimed as refundable for each tax year	[1],[2]	2,685,000	$ 2,685,000
Alternative Minimum Tax (AMT) Credit Carryforward [Member] | Tax Year 2021 [Member]
Alternative Minimum Tax ("AMT") Credit Carryforwards Projected to be Claimed as Refundable for Each Tax Year [Abstract]
Declining balance of the AMT credit carryforward amount(s) available for each tax year	[1],[2]	2,685,000	$ 2,685,000
% of AMT credit carryforward amount(s) available to be claimed as refundable for each tax year			100.00%
AMT credit carryforward amount(s) projected to be claimed as refundable for each tax year	[1],[2]	$ 2,685,000	$ 2,685,000

[1] Assumes no regular federal income tax liability in tax years presented above which would reduce any AMT credit carryforward amount(s) ultimately refunded.

[2] See herein with regard the filing of the Company's 2018 federal income tax return and the March 2019 federal tax refund received.