Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 30,423	$ 32,152
Accounts receivable, net	3,144	2,613
Inventory	39,053	33,319
Prepaid expenses	1,581	1,270
Other receivables	1,184	2,054
Restricted cash	225
Other assets	78	93
Total current assets	75,688	71,501
Property and equipment, net	33,609	33,491
Restricted cash	250	225
Deposits	166	246
Goodwill	2,200	2,200
Total assets	111,913	107,663
Liabilities and Stockholders' Equity
Accounts payable	35,876	28,696
Deferred revenue	5,205	5,414
Accrued expenses	9,187	6,545
Total current liabilities	50,268	40,655
Deferred tax liability	376	350
Total liabilities	50,644	41,005
Stockholders' Equity
Additional paid-in capital	110,922	109,022
Warrants	4,348	4,262
Accumulated deficit	(54,001)	(46,626)
Total stockholders' equity	61,269	66,658
Total liabilities and stockholders' equity	$ 111,913	$ 107,663