Business Segments and Geographic Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Segment	Sep. 30, 2012
Business Segment and Geographic Data [Abstract]
Number of operating units			3
Results of operations from business segments [Abstract]
Revenues	$ 45,893	$ 56,681	$ 161,174	$ 165,860
Cost of revenues	9,066	11,281	32,322	34,870
Gross profit	36,827	45,400	128,852	130,990
Gross profit % (in hundredths)	80.20%	80.10%	79.90%	79.00%
Allocated operating expenses [Abstract]
Engineering and product development	805	628	2,392	2,146
Selling and marketing expenses	30,973	28,285	90,767	85,188
Unallocated operating expenses	5,972	6,231	17,899	22,593
Total operating expenses	37,750	35,144	111,058	109,927
Operating profit	(923)	10,256	17,794	21,063
Interest and other financing income (expense), net	473	(231)	470	(862)
Income (loss) before income tax expense	(450)	10,025	18,264	20,201
CONSUMER [Member]
Results of operations from business segments [Abstract]
Revenues	36,910	49,638	134,643	142,303
Cost of revenues	4,730	7,366	19,422	22,307
Gross profit	32,180	42,272	115,221	119,996
Gross profit % (in hundredths)	87.20%	85.20%	85.60%	84.30%
Allocated operating expenses [Abstract]
Engineering and product development	279	165	775	642
Selling and marketing expenses	26,958	24,980	79,293	74,673
Unallocated operating expenses	0	0	0	0
Total operating expenses	27,237	25,145	80,068	75,315
Operating profit	4,943	17,127	35,153	44,681
Interest and other financing income (expense), net	0	0	0	0
Income (loss) before income tax expense	4,943	17,127	35,153	44,681
PHYSICIAN RECURRING [Member]
Results of operations from business segments [Abstract]
Revenues	7,359	5,121	20,690	15,467
Cost of revenues	3,272	2,811	9,217	8,095
Gross profit	4,087	2,310	11,473	7,372
Gross profit % (in hundredths)	55.50%	45.10%	55.50%	47.70%
Allocated operating expenses [Abstract]
Engineering and product development	341	278	982	863
Selling and marketing expenses	3,370	2,575	9,777	7,526
Unallocated operating expenses	0	0	0	0
Total operating expenses	3,711	2,853	10,759	8,389
Operating profit	376	(543)	714	(1,017)
Interest and other financing income (expense), net	0	0	0	0
Income (loss) before income tax expense	376	(543)	714	(1,017)
PROFESSIONAL [Member]
Results of operations from business segments [Abstract]
Revenues	1,624	1,922	5,841	8,090
Cost of revenues	1,064	1,104	3,683	4,468
Gross profit	560	818	2,158	3,622
Gross profit % (in hundredths)	34.50%	42.60%	36.90%	44.80%
Allocated operating expenses [Abstract]
Engineering and product development	185	185	635	641
Selling and marketing expenses	645	730	1,697	2,989
Unallocated operating expenses	0	0	0	0
Total operating expenses	830	915	2,332	3,630
Operating profit	(270)	(97)	(174)	(8)
Interest and other financing income (expense), net	0	0	0	0
Income (loss) before income tax expense	$ (270)	$ (97)	$ (174)	$ (8)