Description of the Company's Business and Basis of Presentation (Details Textual)	3 Months Ended
	Mar. 31, 2013
Maximum [Member]
Description of Company's Business and Basis of Presentation (Textual) [Abstract]
Health care contracts initial term	2 years
Health care contracts cancellation written notice period	90 days
Minimum [Member]
Description of Company's Business and Basis of Presentation (Textual) [Abstract]
Health care contracts initial term	1 year
Health care contracts cancellation written notice period	60 days