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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2013
Share-Based Compensation  
Schedule of the compensation cost charged against income for plans

 

 

 

 

Three Months Ended

 

Six Months Ended

 

 

 

30-Jun-2013

 

30-Jun-2012

 

30-Jun-2013

 

30-Jun-2012

 

Selling, general & administrative expense

 

$

328,146

 

$

310,153

 

$

507,486

 

$

497,054

 

Schedule of stock option activity under all plans

 

 

 

 

Shares Under
Options

 

Weighted
Average
Exercise Price

 

Aggregate
Intrinsic Value

 

Outstanding at December 31, 2012

 

493,888

 

$

5.47

 

 

 

Granted

 

67,362

 

18.88

 

 

 

Exercised

 

(11,250

)

5.78

 

 

 

Cancelled or expired

 

 

 

 

 

Outstanding at June 30, 2013

 

550,000

 

$

7.11

 

$

7,774,290

 

Options exercisable at June 30, 2013

 

473,750

 

$

5.46

 

$

7,473,940

 

Vested and expected to vest at June 30, 2013

 

550,000

 

$

7.11

 

$

7,774,290

 

Schedule of assumptions used to determine the fair value of options using Black Scholes option pricing model

 

 

Expected volatility

40.0% - 50.0%

Expected dividends

none

Risk free interest rate

0.4%

Expected term

3.8 to 5.0 years

Summary of Restricted Stock Units ( RSUs ) activity

 

 

 

 

Restricted
Stock Units

 

Weighted Average
Award Date
Fair Value

 

Unvested at December 31, 2012

 

108,866

 

$

8.77

 

Awarded

 

10,600

 

19.97

 

Shares vested

 

(61,635

)

6.67

 

Forfeited / cancelled

 

(5,679

)

11.74

 

Unvested at June 30, 2013

 

52,152

 

$

13.20