Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2011

Weighted-Average Assumptions of Options and Warrants for All Years

The fair value for these options and warrants for all years was estimated at the date of grant using a Black-Scholes option-pricing model with the following weighted-average assumptions:

Expected Volatility		30 - 50	%
Expected Dividend Yield		0	%
Expected Life (Term)	3 - 7 years
Risk-Free Interest Rate		3.00 - 4.75	%

Summaries of Options Activity, and Related Information for the Current Quarter

Summaries of the Company's stock options, warrants (other than warrants issued related to our 1.875% Convertible Notes and 2.50% Convertible Notes) and performance related options activity, and related information for the Current Quarter are as follows:

Options				Weighted-Average
	Options			Exercise Price
Outstanding January 1, 2011		2,592,535		$	4.61
Granted		15,000			22.51
Canceled		-			-
Exercised		(213,385	)		7.12
Expired/Forfeited		-			-
Outstanding June 30, 2011		2,394,150		$	4.98
Exercisable at June 30, 2011		2,392,483		$	4.98

Summaries of Warrants and Related Information for the Current Quarter

Warrants

			Weighted-Average
	Warrants		Exercise Price
Outstanding January 1, 2011		253,900	$	17.01
Granted		-		-
Canceled		-		-
Exercised		-		-
Expired/Forfeited		-		-
Outstanding June 30, 2011		253,900	$	17.01
Exercisable at June 30, 2011		253,900	$	17.01

Summary of Unvested Restricted Stock

The following tables summarize information about unvested restricted stock transactions:

				Weighted-Average
	Shares			Grant Date Fair Value
Non-vested, January 1, 2011		1,442,610		$	15.34
Granted		325,490			21.87
Vested		(180,586	)		17.75
Forfeited/Canceled		-			-
Non-vested, June 30, 2011		1,587,514		$	16.40