Income Taxes, AMT Credits Carryforwards (Details) - USD ($)		1 Months Ended		12 Months Ended
		Mar. 29, 2019	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AMT Credit Carryforwards Available [Abstract]
AMT credits carryforwards				$ 21,483,000
Income Taxes [Abstract]
Federal income tax receivable				10,742,000	$ 0
Deferred tax asset				10,741,000	$ 20,092,000
AMT Credit Carryforward [Member]
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
AMT Credit Carryforward [Member] | Tax Year 2019 [Member]
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
% 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
AMT Credit Carryforward [Member] | Tax Year 2020 [Member]
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
% 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
AMT Credit Carryforward [Member] | Tax Year 2021 [Member]
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
% 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
AMT Credit Carryforward [Member] | Federal [Member] | Subsequent Event [Member]
Income Taxes [Abstract]
Amount of tax credit carryforward filed as refund in income tax return			$ 10,700,000
Income tax refund received		$ 10,700,000

[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.