Business Segments and Geographic Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Segment	Sep. 30, 2013
Business Segments and Geographic Data [Abstract]
Number of operating units			4
Results of operations from business segments [Abstract]
Revenues	$ 53,703	$ 45,893	$ 155,898	$ 161,174
Costs of revenues	22,961	9,066	50,958	32,322
Gross profit	30,742	36,827	104,940	128,852
Gross profit % (in hundredths)	57.20%	80.20%	67.30%	79.90%
Allocated operating expenses [Abstract]
Engineering and product development	821	805	2,339	2,392
Selling and marketing expenses	28,840	30,973	90,886	90,767
Unallocated operating expenses	11,678	5,972	30,717	17,899
Total operating expenses	41,339	37,750	123,942	111,058
Operating (loss) profit	(10,597)	(923)	(19,002)	17,794
Interest and other financing income, net	(3,824)	473	(4,145)	470
(Loss) Income before income tax benefit (expense)	(14,421)	(450)	(23,147)	18,264
Operating Segments [Member] | Consumer [Member]
Results of operations from business segments [Abstract]
Revenues	24,938	36,910	94,261	134,643
Costs of revenues	4,363	4,730	14,596	19,422
Gross profit	20,575	32,180	79,665	115,221
Gross profit % (in hundredths)	82.50%	87.20%	84.50%	85.60%
Allocated operating expenses [Abstract]
Engineering and product development	306	279	898	775
Selling and marketing expenses	20,001	26,958	70,382	79,293
Unallocated operating expenses	0	0	0	0
Total operating expenses	20,307	27,237	71,280	80,068
Operating (loss) profit	268	4,943	8,385	35,153
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	268	4,943	8,385	35,153
Operating Segments [Member] | Physician Recurring [Member]
Results of operations from business segments [Abstract]
Revenues	8,823	7,359	24,649	20,690
Costs of revenues	3,094	3,272	9,349	9,217
Gross profit	5,729	4,087	15,300	11,473
Gross profit % (in hundredths)	64.90%	55.50%	62.10%	55.50%
Allocated operating expenses [Abstract]
Engineering and product development	314	341	881	982
Selling and marketing expenses	3,843	3,370	12,122	9,777
Unallocated operating expenses	0	0	0	0
Total operating expenses	4,157	3,711	13,003	10,759
Operating (loss) profit	1,572	376	2,297	714
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	1,572	376	2,297	714
Operating Segments [Member] | Professional [Member]
Results of operations from business segments [Abstract]
Revenues	1,850	1,624	5,753	5,841
Costs of revenues	1,258	1,064	3,884	3,683
Gross profit	592	560	1,869	2,158
Gross profit % (in hundredths)	32.00%	34.50%	32.50%	36.90%
Allocated operating expenses [Abstract]
Engineering and product development	201	185	560	635
Selling and marketing expenses	204	645	935	1,697
Unallocated operating expenses	0	0	0	0
Total operating expenses	405	830	1,495	2,332
Operating (loss) profit	187	(270)	374	(174)
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	187	(270)	374	(174)
Operating Segments [Member] | Clinics [Member]
Results of operations from business segments [Abstract]
Revenues	18,092	0	31,235	0
Costs of revenues	14,246	0	23,129	0
Gross profit	3,846	0	8,106	0
Gross profit % (in hundredths)	21.30%		26.00%
Allocated operating expenses [Abstract]
Engineering and product development	0	0	0	0
Selling and marketing expenses	4,792	0	7,447	0
Unallocated operating expenses	0	0	0	0
Total operating expenses	4,792	0	7,447	0
Operating (loss) profit	(946)	0	659	0
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	$ (946)	$ 0	$ 659	$ 0