Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,911	$ 16,044
Marketable securities	16,612	38,064
Restricted marketable securities	2,566	0
Accounts receivable, net of allowance for doubtful accounts of $2,449 in 2013 and $627 in 2012	39,985	42,652
Inventories	27,793	39,016
Deferred tax assets, net	100	126
Prepaid expenses and other	5,662	4,829
Total current assets	95,629	140,731
Property and equipment, net of accumulated depreciation of $62,334 in 2013 and $59,702 in 2012	9,901	15,229
Marketable securities	3,443	1,201
Intangible assets, net of accumulated amortization of $12,983 in 2013 and $11,951 in 2012	2,131	3,163
Deferred tax assets, net	81	584
Other assets	280	623
Total assets	111,465	161,531
Current liabilities:
Accounts payable	24,538	45,732
Accrued expenses	23,271	27,800
Current portion of contingent loss for litigation	4,326	0
Short-term margin loan facility	2,566	0
Total current liabilities	54,701	73,532
Other long-term liabilities	1,848	2,552
Long-term portion of contingent loss for litigation	10,000	0
Total liabilities	66,549	76,084
Stockholders' equity:
Preferred stock, par value $0.001; 2,000 shares authorized and none outstanding	0	0
Common stock, par value $0.001; 50,000 shares authorized, 34,097 and 33,655 shares issued and outstanding at December 31, 2013 and 2012, respectively	34	34
Additional paid-in capital	441,368	438,477
Accumulated other comprehensive income	5	14
Accumulated deficit	(371,491)	(328,078)
Stockholders' equity before treasury stock	69,916	110,447
Treasury stock at cost; 2,436 common shares at December 31, 2013 and 2012	(25,000)	(25,000)
Total stockholders' equity	44,916	85,447
Total liabilities and stockholders' equity	$ 111,465	$ 161,531