Stock-Based Compensation (Tables)

3 Months Ended

Sep. 30, 2014

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

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

The fair values of the options granted during the three months ended September 30, 2014 and 2013 were estimated on the date of the grant using the Black-Scholes option-pricing model on the basis of the following weighted average assumptions during the respective periods:

	For the three months ended
	September 30,
	2014			2013
Risk-free interest rate		1.32	%		3.3	%
Expected option life in years		6.5			6.5
Expected stock price volatility		75.0	%		76.1	%
Expected dividend yield		0.0	%		0.0	%
Weighted-average fair value of options granted	$	5.95		$	3.76

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

Changes in outstanding stock options during the three months ended September 30, 2014 were as follows:

	Options
					Weighted
					Average
			Weighted		Remaining
			Average		Contractual		Aggregate
	Number of		Exercise		Life		Intrinsic
	Shares		Price ($)		(years)		Value (a)
Outstanding as of June 30, 2014		1,663,329		3.88
Granted		277,000		7.67
Exercised		(287,938)		4.42			$	839,024
Forfeited		-		-
Expired		(28,000)		8.00
Outstanding as of September 30, 2014		1,624,391		4.36		6.3	$	12,446,944
Exercisable and vested at September 30, 2014		857,493		3.29		5.2	$	7,489,637
Available for grant as of September 30, 2014		287,475

(a) Intrinsic value for purposes of this table represents the amount by which the fair value of the underlying stock, based on the respective market prices at September 30, 2014 or if exercised, the exercise dates, exceeds the exercise prices of the respective options.