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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Mar. 31, 2012
Current assets:    
Cash and cash equivalents $ 30,018 $ 46,801
Short term investments - available for sale 15,455 10,347
Accounts receivable, less allowance for doubtful accounts of $2 and $5, respectively 744 1,572
Inventories - finished goods 18,719 26,217
Prepaid expenses and other current assets 1,578 1,241
Deferred tax assets 1,062 1,230
Prepaid income taxes   199
Total current assets 67,576 87,607
Property and equipment, net 2,295 2,597
Intangible asset 860 860
Total assets 70,731 91,064
Current liabilities:    
Accounts payable 5,974 6,619
Accrued expenses and other current liabilities 2,194 2,772
Income taxes payable 246  
Total current liabilities 8,414 9,391
Deferred tax liabilities 247 492
Total liabilities 8,661 9,883
Commitments and contingencies      
Shareholders' equity:    
Preferred stock, $.001 par value, 5,000 shares authorized; 3 convertible shares issued and outstanding with a liquidation preference of $4 per share 9 9
Common stock, $.001 par value, 40,000 shares authorized; 20,001 and 20,338 shares issued and outstanding, respectively 20 20
Retained earnings 62,055 81,108
Accumulated other comprehensive (loss) gain (14) 44
Total shareholders' equity 62,070 81,181
Total liabilities and shareholders' equity $ 70,731 $ 91,064