Income Taxes Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Income Tax Expense (Benefit)	$ 854,000	$ (583,000)	$ 118,000
Income (Loss) from Subsidiaries, Tax Expense (Benefit)	749,000	(707,000)	15,000
Franchise, excise and other taxes	1,009,000	985,000	605,000
Deferred Income Tax Expense (Benefit)	707,000		0
Current Income Tax Expense (Benefit)	42,000
Operating Loss Carryforwards, Valuation Allowance	462,000
Income Taxes Paid	$ 30,000	122,000	$ 139,000
Texas Franchise Tax [Member]
Income Taxes [Line Items]
Franchise, excise and other taxes		$ 124,000