Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Current assets:    
Cash $ 6,859 $ 10,390
Accounts receivable, net 10,194 13,902
Costs in excess of billings on uncompleted contracts 2,749 5,288
Inventory, net 4,697 5,711
Other current assets 1,710 3,026
Total current assets 26,209 38,317
Property and equipment, net 3,596 3,991
Total assets 29,805 42,308
Current liabilities:    
Line of credit   6,498
Accounts payable 10,183 15,951
Accrued liabilities 3,315 4,943
Billings in excess of costs on uncompleted contracts 2,474 2,975
Related party debt 3,600 6,850
Other current liabilities 776 723
Total current liabilities 20,348 37,940
Related party debt 3,150  
Common stock warrant liability 3,702  
Other liabilities 696 443
Total liabilities 27,896 38,383
Commitments and contingencies      
Shareholders' equity:    
Additional paid-in capital 86,870 82,185
Accumulated deficit (84,964) (78,263)
Total shareholders' equity 1,909 3,925
Total liabilities and shareholders' equity 29,805 42,308
Common Class A
    
Shareholders' equity:    
Class A common stock, $.0001 par value, 150,000,000 shares authorized, 30,040,212 and 26,693,696 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively $ 3 $ 3