Stockholders' Equity (Details) - Employee Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding beginning of the year	261,700	197,419
Options Granted	0	130,710
Options Exercised	0	0
Options Expired and forfeited	(24,856)	(66,429)
Outstanding at end of year	236,844	261,700
Exercisable at end of year	55,066	30,638
Weighted Avg. Exercise Price Outstanding beginning of the year (in dollars per share)	$ 8.11	$ 24.37
Weighted Avg. Exercise Price Granted (in dollars per share)		7.77
Weighted Avg. Exercise Price Expired and forfeited (in dollars per share)	7.96	55.78
Weighted Avg. Exercise Price Outstanding at end of year (in dollars per share)	8.14	8.11
Weighted Avg. Exercise Price Exercisable at end of year (in dollars per share)	$ 8.54	$ 8.64