Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 7,601	$ 4,290
Restricted cash	171	189
Short-term investments	36,570	50,528
Accounts receivable, net	8,120	30,655
Accounts receivable, related parties	4,325	1,989
Inventories	45,811	22,823
Other inventory supplies	15,734	17,613
Prepaid expenses and other current assets	2,581	4,491
Deferred tax assets	2,619	3,078
Total current assets	123,532	135,656
Property and equipment, net	121,358	120,931
Investment		2,000
Other assets	1,583	1,365
Total Assets	246,473	259,952
Liabilities and stockholders' equity
Accounts payable	7,781	12,831
Accrued payroll	1,371	1,578
Accrued and other current liabilities	1,195	1,570
Corporate income and franchise taxes	379	612
Advance payments	206	9
Total current liabilities	10,932	16,600
Deferred tax liability	9,547	15,121
Total liabilities	20,479	31,721
Commitments and contingencies (Note 9)
Stockholders' equity
Preferred stock, $0.001 par value, 5,000,000 undesignated shares authorized, no shares issued or outstanding
Common stock, $0.001 par value, 45,000,000 shares authorized and 24,312,140 and 24,289,723 shares issued; 22,537,296 and 22,514,879 shares outstanding	24	24
Additional paid-in capital	333,613	332,119
Treasury stock, at cost, 1,774,844 shares	(12,148)	(12,148)
Accumulated other comprehensive income (loss)	626	(50)
Accumulated deficit	(96,121)	(91,714)
Total stockholders' equity	225,994	228,231
Total liabilities and stockholders' equity	$ 246,473	$ 259,952