Segment Information (Financial Information By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Revenue	$ 7,177		$ 7,422	$ 18,142	$ 21,669
Gross profit	5,316		5,647	13,649	16,071
Goodwill impairment			11,685	3,175	11,685
Amortization of intangible assets	409		417	1,227	1,243
Intangible assets and goodwill	6,909		11,498	6,909	11,498
Autoscope [Member]
Segment Reporting Information [Line Items]
Revenue	4,980		4,480	12,021	11,243
Gross profit	4,440		4,081	10,686	10,404
Goodwill impairment			525		525
RTMS [Member]
Segment Reporting Information [Line Items]
Revenue	1,056		1,678	2,430	5,751
Gross profit	469		931	1,058	3,263
Goodwill impairment		1,400	7,392	1,372	7,392
Amortization of intangible assets	192		192	576	576
Intangible assets and goodwill	1,603		3,743	1,603	3,743
CitySync [Member]
Segment Reporting Information [Line Items]
Revenue	1,141		1,264	3,691	4,675
Gross profit	407		635	1,905	2,404
Goodwill impairment		1,800	3,768	1,803	3,768
Amortization of intangible assets	217		225	651	667
Intangible assets and goodwill	$ 5,306		$ 7,755	$ 5,306	$ 7,755

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References+ Details

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details