Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 14,571	$ 4,290
Restricted cash	146	189
Short-term investments	40,398	50,528
Accounts receivable, net	8,390	30,655
Accounts receivable, related parties	3,902	1,989
Inventories, net	32,510	22,823
Other inventory supplies	15,752	17,613
Prepaid expenses and other current assets	1,911	4,491
Deferred tax assets	3,078	3,078
Total current assets	120,658	135,656
Property and equipment, net	122,560	120,931
Investments	2,000	2,000
Other assets	1,312	1,365
Total assets	246,530	259,952
Liabilities and stockholders' equity
Accounts payable	6,213	12,831
Accrued payroll	687	1,578
Accrued and other current liabilities	1,185	1,570
Corporate income and franchise taxes	303	612
Advance payments	414	9
Total current liabilities	8,802	16,600
Deferred tax liability	12,327	15,121
Total liabilities	21,129	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 24,308,318 and 24,289,723 shares issued; 22,533,474 and 22,514,879 shares outstanding	24	24
Additional paid-in capital	332,617	332,119
Treasury stock, at cost, 1,774,844 shares	(12,148)	(12,148)
Accumulated other comprehensive loss	(11)	(50)
Accumulated deficit	(95,081)	(91,714)
Total stockholders' equity	225,401	228,231
Total liabilities and stockholders' equity	$ 246,530	$ 259,952