Net Loss per Common Share (Basic and Diluted Income (Loss) Per Share) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Basic and diluted net income (loss) per common share calculation:
Net income (loss)	$ (3,851,000)	$ 10,769,000	$ (6,963,000)	$ (3,724,000)	$ (516,000)
Excess of fair value of consideration transferred on conversion of Series B Preferred stock	(2,366,000)		(2,366,000)
Accretion of Series B redeemable convertible preferred stock	(133,000)	(1,828,000)	(1,858,000)	(2,166,000)
Net loss attributable to common stockholders	$ (6,350,000)	$ 8,941,000	$ (11,187,000)	$ (5,890,000)
Weighted average number of shares of common stock outstanding - basic	8,740,621	5,667,170	7,312,062	4,960,416
Net loss per share of common stock - basic	$ (0.73)	$ 1.27	$ (1.53)	$ (1.19)
Weighted average number of shares of common stock outstanding - diluted	8,768,059	7,545,487	7,325,781	4,960,416
Net loss per share of common stock - diluted	$ (0.78)	$ (0.33)	$ (1.60)	$ (1.19)
Increase in diluted income available to common stockholders	$ 506,000		$ 506,000
Restatement Adjustment [Member]
Basic and diluted net income (loss) per common share calculation:
Net loss attributable to common stockholders		$ 1,716,000
Restatement Adjustment [Member] | Preferred Stock and Warrants [Member]
Basic and diluted net income (loss) per common share calculation:
Income (loss) attributable to common shareholders, diluted		$ 9,707,000