Business Segments and Geographic Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Segment	Jun. 30, 2013
Business Segments and Geographic Data [Abstract]
Number of operating units			4
Results of operations from business segments [Abstract]
Revenues	$ 52,120	$ 58,065	$ 102,195	$ 115,281
Costs of revenues	17,652	11,390	27,997	23,256
Gross profit	34,468	46,675	74,198	92,025
Gross profit % (in hundredths)	66.10%	80.40%	72.60%	79.80%
Allocated operating expenses [Abstract]
Engineering and product development	723	814	1,518	1,587
Selling and marketing expenses	30,420	30,468	62,046	59,794
Unallocated operating expenses	11,452	6,268	19,039	11,927
Total operating expenses	42,595	37,550	82,603	73,308
Operating (loss) profit	(8,127)	9,125	(8,405)	18,717
Interest and other financing income, net	(175)	(134)	(321)	(3)
(Loss) Income before income tax benefit (expense)	(8,302)	8,991	(8,726)	18,714
Operating Segments [Member] | Consumer [Member]
Results of operations from business segments [Abstract]
Revenues	28,453	48,673	69,323	97,733
Costs of revenues	3,983	7,174	10,233	14,691
Gross profit	24,470	41,499	59,090	83,042
Gross profit % (in hundredths)	86.00%	85.30%	85.20%	85.00%
Allocated operating expenses [Abstract]
Engineering and product development	305	279	592	497
Selling and marketing expenses	23,223	26,703	50,381	52,334
Unallocated operating expenses	0	0	0	0
Total operating expenses	23,528	26,982	50,973	52,831
Operating (loss) profit	942	14,517	8,117	30,211
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	942	14,517	8,117	30,211
Operating Segments [Member] | Physician Recurring [Member]
Results of operations from business segments [Abstract]
Revenues	8,607	7,376	15,826	13,331
Costs of revenues	3,425	3,014	6,255	5,945
Gross profit	5,182	4,362	9,571	7,386
Gross profit % (in hundredths)	60.20%	59.10%	60.50%	55.40%
Allocated operating expenses [Abstract]
Engineering and product development	257	317	567	641
Selling and marketing expenses	4,268	3,233	8,279	6,407
Unallocated operating expenses	0	0	0	0
Total operating expenses	4,525	3,550	8,846	7,048
Operating (loss) profit	657	812	725	338
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	657	812	725	338
Operating Segments [Member] | Professional [Member]
Results of operations from business segments [Abstract]
Revenues	1,917	2,016	3,903	4,217
Costs of revenues	1,361	1,202	2,626	2,620
Gross profit	556	814	1,277	1,597
Gross profit % (in hundredths)	29.00%	40.40%	32.70%	37.90%
Allocated operating expenses [Abstract]
Engineering and product development	161	218	359	449
Selling and marketing expenses	274	532	731	1,053
Unallocated operating expenses	0	0	0	0
Total operating expenses	435	750	1,090	1,502
Operating (loss) profit	121	64	187	95
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	121	64	187	95
Operating Segments [Member] | Clinics [Member]
Results of operations from business segments [Abstract]
Revenues	13,143	0	13,143	0
Costs of revenues	8,883	0	8,883	0
Gross profit	4,260	0	4,260	0
Gross profit % (in hundredths)	32.40%		32.40%
Allocated operating expenses [Abstract]
Engineering and product development	0	0	0	0
Selling and marketing expenses	2,655	0	2,655	0
Unallocated operating expenses	0	0	0	0
Total operating expenses	2,655	0	2,655	0
Operating (loss) profit	1,605	0	1,605	0
Interest and other financing income, net	0	0	0	0
(Loss) Income before income tax benefit (expense)	$ 1,605	$ 0	$ 1,605	$ 0