Income Taxes Changes in Net Deferred Tax Liability (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Deferred Tax Liabilities, Net, Noncurrent			$ (1,704,000)
Deferred Income Tax Expense (Benefit)	$ (4,085,000)	$ 79,154,000
Deferred Tax Liability, Business Acquisition Deferred Tax Liability Assumed	0	(909,000)
Available-for-sale Securities, Income Tax Expense on Change in Unrealized Holding Gain (Loss)	6,695,000	(10,382,000)
Deferred Tax from Change in Unrealized Gain Loss Atributible to Deferred Acquisition Costs and Value of Business Acquired	(115,000)	110,000
Deferred Tax Assets, Net	68,764,000.000	$ 66,269,000.000
Deferred Tax Assets, Capital Loss Carryforwards	1,700,000
Operating Loss Carryforwards	$ 0