Stockholders' Equity and Redeemable Convertible Preferred Stock (Details 1)	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Number of Shares
Outstanding at beginning of year | shares	2,304,888
Expired | shares	(555)
Outstanding at end of year | shares	2,304,333
Exercisable at end of year | shares	2,304,333
Weighted Average Exercise Price
Outstanding at beginning of year | $ / shares	$ 7.98
Expired | $ / shares	3,040.00
Outstanding at end of year | $ / shares	7.25
Exercisable at end of year | $ / shares	$ 7.25
Total Intrinsic Value
Outstanding at beginning of year
Issued
Expired
Outstanding at end of year
Exercisable at end of year
Weighted Average Remaining Contractual Life (in years)
Outstanding at beginning of year	2 years 9 months 29 days
Outstanding at end of year	2 years 6 months 29 days
Exercisable at end of year	2 years 6 months 29 days