Shareholders' Equity (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Impact on the results of operations of recording stock-based compensation expense
Total stock-based compensation expense	$ 254	$ 408	$ 506	$ 892
Per diluted share	$ 0.02	$ 0.04	$ 0.05	$ 0.08
Cost of revenue - service [Member]
Impact on the results of operations of recording stock-based compensation expense
Total stock-based compensation expense	63	100	136	207
Selling, general and administrative [Member]
Impact on the results of operations of recording stock-based compensation expense
Total stock-based compensation expense	162	278	311	622
Research and development [Member]
Impact on the results of operations of recording stock-based compensation expense
Total stock-based compensation expense	$ 29	$ 30	$ 59	$ 63