Summary of Significant Accounting Policies Property and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Balance Sheet Reclassification - Property	$ 1,600,000
Capital Leases, Future Minimum Payments, Executory Costs	114,000
Future Operating Lease, Expense	118,000
Property, Plant and Equipment, Gross	15,461,000	$ 23,490,000
Accumulated Depreciation	(8,837,000)	(15,600,000)
Property, Plant and Equipment, Net	6,624,000	7,890,000
Gain on Sale of Investments	$ 99,000
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	30 years
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 4,139,000	10,051,000
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,189,000	2,994,000
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	8,042,000	6,914,000
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	91,000	175,000
Air Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 0	$ 3,356,000