Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Alternative minimum tax carryforward	$ 4,633
Unrecognized tax benefits related to various federal and state income tax matters	229	$ 269	$ 287	$ 428
Tax-effected amount that would reduce the company's effective income tax rate if recognized	192
Accrued interest and penalties related to unrecognized tax benefits	10
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	16,847
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 14,937