Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 62,358,266	$ 61,639,064
Cash restricted for payment of dividend		16,230,966
Trade accounts receivable, net	55,261,023	49,305,881
Deferred income taxes, net	886,969	915,728
Prepaid expenses & other current assets	9,340,344	5,994,024
Total current assets	127,846,602	134,085,663
Property and equipment, net	16,024,724	8,852,830
Intangible assets, net	1,015,846	1,088,115
Deferred income taxes, net		83,309
Other assets	252,765	243,773
Total assets	145,139,937	144,353,690
Current liabilities:
Accounts payable	43,663,847	45,038,059
Accrued expenses	18,948,077	16,293,290
Dividend payable		16,230,966
Other current liabilities	207,577	309,441
Total current liabilities	62,819,501	77,871,756
Deferred income taxes, net	2,050,230
Other long-term liabilities	1,345,836	1,405,172
Total liabilities	66,215,567	79,276,928
Commitments and contingencies (Notes 2, 3, 6, 7 and 9)
Stockholders' equity:
Common stock, $0.0001 par, 200,000,000 shares authorized, 64,628,105 and 64,178,101 shares issued and outstanding	6,463	6,418
Additional paid-in capital	84,308,249	96,799,434
Accumulated deficit	(5,390,342)	(31,729,090)
Total stockholders' equity	78,924,370	65,076,762
Total liabilities and stockholders' equity	$ 145,139,937	$ 144,353,690