Shareholder Rights Agreement (Narrative) (Details) - USD ($)		12 Months Ended
	Feb. 19, 2014	Dec. 31, 2015	Dec. 31, 2014
Warrants and Rights Note Disclosure [Abstract]
Exercise price of participating cumulative preferred stock, per share		$ 150
Percentage of outstanding common stock shares to be acquired for exercise of rights (more than)		20.00%
Share-Based Compensation Arrangement by Share-based Payment Award, Price Per RIght Redeemed by Board of DIrectors in Event Agreement is Not Approved	$ 0.01
Shareholder Rights Redemption Payment			$ 323,000