Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 41,143	$ 49,450
Accounts receivable, net of allowance for doubtful accounts of $59 and $66 as of June 30, 2012 and December 31, 2011, respectively	34,813	23,233
Inventories	37,166	34,072
Prepaid expenses and other assets	16,602	14,605
Deferred income taxes	4,363	4,363
Total current assets	134,087	125,723
Property, plant and equipment, net	166,103	143,586
Other assets	2,854	1,802
Goodwill	2,538	1,377
Total assets	305,582	272,488
Current Liabilities:
Accounts payable	24,881	18,806
Current portion of note payable	62
Accrued expenses and other current liabilities	48,039	48,243
Total current liabilities	72,982	67,049
Deferred income taxes	17,349	17,349
Note payable, less current portion	566
Other liabilities	4,123	3,345
Total liabilities	95,020	87,743
Commitments and Contingencies
Stockholders' Equity:
Additional paid-in capital	149,890	138,336
Accumulated other comprehensive loss, net of tax	(838)	(838)
Retained earnings	61,382	47,119
Total stockholders' equity	210,562	184,745
Total liabilities and stockholders' equity	305,582	272,488
Common Class A
Stockholders' Equity:
Common Stock	87	87
Common Class B
Stockholders' Equity:
Common Stock	$ 41	$ 41