Organization and Significant Accounting Policies - Additional Information (Detail)			12 Months Ended
	Jul. 29, 2015	Jul. 01, 2006 shares	Dec. 31, 2016 USD ($) Subsidiary shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 shares
Organization And Significant Accounting Policies [Line Items]
Percentage of ownership in issued and outstanding shares of common stock parent Company			93.70%
Common stock in subsidiary Company | shares		133,334
Reverse stock split ratio	0.0067
Reverse stock split ratio description			Effective July 29, 2015 and pursuant to the reverse stock split approved by the Company’s Board of Directors, each 150 shares of issued and outstanding common stock were combined into and became one share of common stock and no fractional shares were issued.
Burn rate			$ 350,000
Capital expenditures and patent costs			$ 79,000
Revenue-generating subsidiaries | Subsidiary			2
Revenues			$ 7,165,000	$ 7,551,000
Original maturities period, maximum			3 months
Allowance for doubtful accounts receivable			$ 12,000	20,000
Patents and other intangible assets			4,277,000	3,894,000
Accumulated amortization			793,000	671,000
Impairment of intangible assets			$ 330,000	$ 176,000
Period of right of return guarantee			30 days	30 days	30 days
Vested stock options outstanding | shares			217,762	191,519
Stock options outstanding, non-vested | shares			1,293,044	60,120
Warrants outstanding | shares			7,321,468	126,206	850,058
Warrants [Member]
Organization And Significant Accounting Policies [Line Items]
Number of common shares considered dilutive | shares				74,455
Allowance for Sales Returns [Member]
Organization And Significant Accounting Policies [Line Items]
Allowance for sales returns			$ 10,000	$ 10,000
Cell Technology [Member]
Organization And Significant Accounting Policies [Line Items]
Percentage of revenue contributed			60.00%	54.00%
Skin Care [Member]
Organization And Significant Accounting Policies [Line Items]
Percentage of revenue contributed			40.00%	46.00%
Warrants outstanding | shares			0	1,334	1,334
Research and Development [Member]
Organization And Significant Accounting Policies [Line Items]
Amortization expense			$ 122,000	$ 99,000
Minimum [Member]
Organization And Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment			3 years
Maximum [Member]
Organization And Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment			5 years
Therapeutic [Member]
Organization And Significant Accounting Policies [Line Items]
Revenues			$ 0
Clinical [Member]
Organization And Significant Accounting Policies [Line Items]
Revenues			$ 0