3. Contingent Consideration (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Combination, Contingent Consideration Arrangements [Abstract]
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Significant Inputs			30%
Business Acquisition, Contingent Consideration, at Fair Value	$ 0
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent		60,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 60,000	$ 900,000