STATEMENTS OF INCOME (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
STATEMENTS OF INCOME [Abstract]
Revenue	$ 74,135,669	$ 43,990,784	$ 43,906,825
Cost of sales	55,325,729	37,877,960	32,597,208
Gross profit	18,809,940	6,112,824	11,309,617
Selling, general and administrative expenses	7,931,586	5,415,292	5,197,663
Income from operations	10,878,354	697,532	6,111,954
Interest income (expense):
Interest/other income	4,065	3,770	2,014
Interest expense	(343,491)	(158,406)	(252,961)
Total other income (expense), net	(339,426)	(154,636)	(250,947)
Income before provision for income taxes	10,538,928	542,896	5,861,007
Provision for income taxes	3,122,000	13,000	1,915,000
Net income	$ 7,416,928	$ 529,896	$ 3,946,007
Basic net income per common share (in dollars per share)	$ 1.08	$ 0.08	$ 0.66
Diluted net income per common share (in dollars per share)	$ 1.04	$ 0.08	$ 0.64
Shares used in computing earnings per common share:
Basic (in shares)	6,869,624	6,489,942	5,994,326
Diluted (in shares)	7,133,604	6,736,501	6,156,628