Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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+ Details

Commitments and Contingencies (Details) (USD $)		12 Months Ended						0 Months Ended				0 Months Ended
Commitments and Contingencies (Details) (USD $)	Feb. 29, 2012 Curtailment Guaranties ClearPoint item	Dec. 31, 2012 Curtailment Guaranties ClearPoint Maximum	Dec. 31, 2012 Curtailment Guaranties ClearPoint Minimum	Mar. 01, 2013 ClearPoint	Dec. 31, 2012 ClearPoint	Dec. 31, 2011 ClearPoint	Jan. 03, 2011 ClearPoint Maximum	Oct. 01, 2011 AmTech	Dec. 31, 2011 AmTech	Dec. 31, 2010 AmTech	Oct. 01, 2011 AmTech Maximum	Oct. 01, 2011 AmTech Minimum
Commitments and contingencies
Number of guaranties relating to contractual obligations	2
Guaranteed payment percentage		100.00%	5.00%
Contingent amount payable							$ 2,000,000				$ 15,000,000
Accrued contingent obligation recorded in accrued compensation					300,000	800,000
Settlement of remaining obligation				100,000
Additional earn out payment as a percentage of profits of a specified amount								50.00%
Specified amount of profit before accrued contingent obligation is recorded												15,000,000
Contingent consideration recorded as additional purchase price									$ 0	$ 0