Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Current income tax [Abstract]
Federal	$ (206,000)	$ (198,000)
State	160,000	153,000
Foreign	582,000	437,000
Total	536,000	392,000
Deferred income tax [Abstract]
Federal	(1,650,000)	(7,777,000)
State	(300,000)	(55,000)
Total	(1,950,000)	(7,832,000)
Provision (benefit) for income taxes	(1,414,000)	(7,440,000)
(Provision) benefit for income taxes	(793,000)	1,353,000
Deferred tax liabilities (assets)
Software development costs	3,740,000	4,003,000
Gross deferred tax liabilities	3,740,000	4,003,000
Allowances for bad debts and inventory	(3,640,000)	(6,608,000)
Capitalized inventory costs	(125,000)	(107,000)
Intangible assets	(4,119,000)	(4,792,000)
Employee benefit accruals	(1,805,000)	(1,848,000)
Federal net operating loss carryforward	(8,122,000)	(3,722,000)
State net operating loss carryforward	(957,000)	(493,000)
Tax credit carryforwards	(4,006,000)	(3,879,000)
Foreign currency	(147,000)	(191,000)
Other	(334,000)	(361,000)
Gross deferred tax assets	(23,255,000)	(22,001,000)
Less valuation allowance	2,198,000	2,153,000
Net deferred tax assets	(17,317,000)	(15,845,000)
Schedule of Income Tax [Line Items]
Tax credit carryforwards	3,700,000
Operating loss carryforward	21,100,000
Benefit within additional paid in capital on realization of operating loss carryforward	1,500,000
Tax expense associated with deferred tax asset valuation allowance	44,000	655,000
Percentage for recognition of uncertain tax positions, minimum (in hundredths)	50.00%
Computation of effective income tax rate [Abstract]
Federal statutory tax rate (in hundredths)	(35.00%)	(35.00%)
State taxes (in hundredths)	(6.20%)	0.30%
Non deductible expenses (in hundredths)	6.40%	0.70%
Tax credits (in hundredths)	0.00%	(2.90%)
Foreign subsidiary liquidation	(6.30%)	0.00%
Foreign income tax rate differential (in hundredths)	(5.80%)	(0.30%)
Valuation allowance (in hundredths)	1.30%	0.90%
Other (in hundredths)	1.10%	0.50%
Total (in hundredths)	(44.50%)	(35.80%)
State [Member]
Schedule of Income Tax [Line Items]
Tax credit carryforwards	331,000,000
Federal [Member]
Schedule of Income Tax [Line Items]
Operating loss carryforward	$ 13,000,000