Share-based Compensation (Details) - Common stock options	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Number of Shares
Outstanding at beginning of year, Shares | shares	2,555,263
Granted, Shares | shares	265,000
Exercised, Shares | shares	(9,985)
Forfeited, Shares | shares	(358,708)
Outstanding at March 31, 2016 | shares	2,451,570
Stock options exercisable at March 31, 2016 | shares	1,185,030
Wtd. Avg. Exercise Price
Outstanding at beginning of year | $ / shares	$ 1.80
Granted, Wtd. Avg. Shares Exercise Price | $ / shares	1.84
Exercised, Wtd. Avg. Shares Exercise Price | $ / shares	1.40
Forfeited, Wtd. Avg. Shares Exercise Price | $ / shares	2.15
Outstanding at March 31, 2016 | $ / shares	1.75
Stock options exercisable at March 31, 2016 | $ / shares	$ 1.43