Income Taxes, Accounting for Uncertainty in Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits	$ 12	$ 12
Unrecognized interest and penalties	$ 1
Internal Revenue Service (IRS) [Member] | Tax Year 2012 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2012
Internal Revenue Service (IRS) [Member] | Tax Year 2013 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2013
Internal Revenue Service (IRS) [Member] | Tax Year 2014 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2014
California Franchise Tax Board [Member] | Tax Year 2011 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2011
California Franchise Tax Board [Member] | Tax Year 2012 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2012
California Franchise Tax Board [Member] | Tax Year 2013 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2013
California Franchise Tax Board [Member] | Tax Year 2014 [Member]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Tax year subject to examination	2014