UNAUDITED CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Accounts receivable, allowances for bad debts and customer credits	$ 405	$ 405
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	11,445,187	11,445,187
Preferred stock, outstanding (in shares)
Common stock, authorized (in shares)	55,000,000	55,000,000
Common stock, issued (in shares)	8,981,340	8,909,737
Common stock, outstanding (in shares)	8,981,340	8,909,737