Consolidated Income Statements (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 22,877	$ 14,854
Cost of sales	13,715	8,886
Gross Profit	9,162	5,968
Operating expenses:
Selling and marketing	823	681
General and administrative	934	1,069
Total operating expenses	1,757	1,750
Operating income	7,405	4,218
Other income (expense):
Interest expense	(197)	(171)
Total other income (expense)	(197)	(171)
Income before income taxes	7,208	4,047
Income tax expense	2,739	1,538
Net income	$ 4,469	$ 2,509
Net income per common share - Basic	$ 0.18	$ 0.11
Net income per common share - Diluted	$ 0.17	$ 0.10
Weighted average number of shares outstanding - Basic	24,334,966	23,785,556
Weighted average number of shares outstanding - Diluted	26,751,714	25,848,956