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Income Taxes (Schedule of Deferred Tax Assets and Liabilities, Net) (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Deferred Tax Assets    
Net operating loss and tax credits $ 2,144,460 $ 1,159,865
Property and equipment and intangibles 214,478 153,361
Allowance for accounts receivable 235,446 74,362
Reserve for expired product 600,406 706,960
Inventory 1,495,895 1,185,419
Deferred charges 666,236 582,480
Cumulative compensation costs incurred on deductible equity awards 1,378,690 1,251,382
Total deferred tax assets 6,735,611 5,113,829
Deferred Tax Liabilities    
Intangible assets (2,683,587) (2,665,022)
Net deferred tax assets, before valuation allowance 4,052,024 2,448,807
Less: deferred tax asset valuation allowance (131,617) (108,318)
Net deferred tax assets $ 3,920,407 $ 2,340,489