Stock Based Compensation Expense Allocation (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 4,800,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 7 months 0 days
Allocated Share-based Compensation Expense, Net of Tax	2,538,000	6,976,000	9,649,000
Stock based compensation capitalized in Inventory	42,000	38,000
Stock Based Compensation capitalized in Deferred COGS	8,000	3,000
Cost of Product [Member]
Allocated Share-based Compensation Expense	193,000	567,000	864,000
Cost of Service [Member]
Allocated Share-based Compensation Expense	47,000	111,000	112,000
Cost of Revenues [Member]
Allocated Share-based Compensation Expense	240,000	678,000	976,000
Product Development [Member]
Allocated Share-based Compensation Expense	696,000	2,304,000	3,891,000
Selling and Marketing Expense [Member]
Allocated Share-based Compensation Expense	635,000	1,896,000	2,251,000
General and Administrative Expense [Member]
Allocated Share-based Compensation Expense	967,000	2,098,000	2,531,000
Operating Expense [Member]
Allocated Share-based Compensation Expense	2,298,000	6,298,000	8,673,000
Total Share based compensation costs prior to tax benefit [Member]
Allocated Share-based Compensation Expense	2,538,000	6,976,000	9,649,000
Tax benefit [Member]
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	$ 0	$ 0	$ 0