Stock-Based Compensation (Tables)

6 Months Ended

Dec. 31, 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 six months ended December 31, 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 six months ended
	December 31,
	2014			2013
Risk-free interest rate		1.3	%		3.0	%
Expected option life in years		6.5			6.5
Expected stock price volatility		75.05	%		76.09	%
Expected dividend yield		0.0	%		0.0	%
Weighted-average fair value of options granted	$	5.90		$	3.95

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

Changes in outstanding stock options during the six months ended December 31, 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	279,000	7.71
Exercised	(471,701)	3.79		$	1,204,388
Forfeited	(4,250)	3.78
Expired	(28,000)	8.00
Outstanding as of December 31, 2014	1,438,378	4.57	6.50	$	11,220,393
Exercisable and vested at December 31, 2014	709,056	3.55	5.3	$	6,256,483
Available for grant as of December 31, 2014	289,725

(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 December 31, 2014 or if exercised, the exercise dates, exceeds the exercise prices of the respective options.