Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	For the three months ended
	March 31, 2015
Expected volatility		52.7% - 55.2%
Expected term (in years)		3.2 -3.3 years
Risk-free rate		0.89% - 1.14%
Expected dividends		0%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of option activity under the 1999 Plan, the Director Plan and the 2009 Plan as of March 31, 2015 and changes during the period are presented below:

			Weighted
	Number of		Average
	Options		Exercise Price
Outstanding as of January 1, 2015		2,436,834	$	1.79
Issued		590,500	$	10.12
Exercised		(7,666)	$	2.07
Forfeited		(10,500)	$	3.06
Expired		-		-
Outstanding as of March 31, 2015		3,009,168	$	3.42
Exercisable as of March 31, 2015		1,736,997	$	1.20

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The following table summarizes information regarding options outstanding and exercisable at March 31, 2015:

Outstanding:
					Weighted
	Stock		Weighted		Average
	Options		Average		Remaining
Range of  Exercise Prices	Outstanding		Exercise Price		Contractual Life
$0.55 - $1.00		95,000	$	0.78		2.83
$1.01 - $1.50		1,883,500	$	1.07		6.89
$1.51 - $10.67		1,030,668	$	7.96		9.23
Total		3,009,168	$	3.42		7.57

Exercisable:
	Stock		Weighted
	Options		Average
Range of  Exercise Prices	Exercisable		Exercise Price
$0.55 - $1.00		95,000	$	0.78
$1.01 - $1.50		1,446,664	$	1.08
$1.51 - $10.67		195,333	$	2.33
Total		1,736,997	$	1.20

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

At March 31, 2015, the Company had approximately $1.2 million of total unrecognized compensation cost related to non-vested restricted stock and RSUs, all of which will be recognized through February 2018.

	Number of		Weighted Average
	Restricted Stock		Exercise Price
Non-vested balance at January 1, 2015		108,334	$	2.86
Changes during the period:
Shares granted		32,500		10.67
Shares vested		(32,500)		10.67
Shares forfeited		-		-
Non-vested balance at March 31, 2015		108,334	$	2.86

	Number of		Weighted Average
	RSUs		Exercise Price
Non-vested balance at January 1, 2015		-	$	-
Changes during the period:
Shares granted		145,250		10.67
Shares vested		(32,500)		10.67
Shares forfeited		-		-
Non-vested balance at March 31, 2015		112,750	$	10.67