Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting Information [Line Items]
Revenue	$ 5,708	$ 8,102	$ 10,965	$ 14,247
Gross profit	4,390	5,943	8,333	10,424
Goodwill impairment	3,175		3,175
Amortization of intangible assets	410	414	818	826
Intangible assets and goodwill	7,136	23,826	7,136	23,826
Autoscope [Member]
Segment Reporting Information [Line Items]
Revenue	4,154	3,699	7,041	6,763
Gross profit	3,660	3,418	6,246	6,323
Intangible assets and goodwill		525		525
RTMS [Member]
Segment Reporting Information [Line Items]
Revenue	591	3,112	1,374	4,073
Gross profit	176	1,891	589	2,332
Goodwill impairment	1,372		1,372
Amortization of intangible assets	192	192	384	384
Intangible assets and goodwill	1,796	11,326	1,796	11,326
CitySync [Member]
Segment Reporting Information [Line Items]
Revenue	963	1,291	2,550	3,411
Gross profit	554	634	1,498	1,769
Goodwill impairment	1,803		1,803
Amortization of intangible assets	218	222	434	442
Intangible assets and goodwill	$ 5,340	$ 11,975	$ 5,340	$ 11,975

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