Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ 21,082	$ 17,992
AMT credit	330	213
General business credits	1,029	$ 837
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	35,700
Tangible Property [Member]
Operating Loss Carryforwards [Line Items]
Long-term deferred tax liabilities increase amount	$ 1,800
Building Improvements [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Estimated useful lives	39 years