Commitments, Contingent Liabilities and Litigation and Regulatory Matters (Narrative) (Details)	1 Months Ended
	Jan. 31, 2012 state	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commitments Guarantees Contingent Liabilities And Litigation [Line Items]
Commitments to fund commercial loans		$ 5,000,000	$ 1,000,000
Commitments to fund investments		36,000,000	$ 22,000,000
Number of States Needed for Agreement to Become Effective | state	20
Minimum
Commitments Guarantees Contingent Liabilities And Litigation [Line Items]
Estimate of possible losses in excess of accruals		0
Maximum
Commitments Guarantees Contingent Liabilities And Litigation [Line Items]
Estimate of possible losses in excess of accruals		$ 3,000,000