Stockholders' Equity (Details Narrative) - USD ($)							3 Months Ended					9 Months Ended		12 Months Ended
	Jul. 09, 2019	May 22, 2019	May 15, 2019	Sep. 05, 2018	Apr. 10, 2018	Jul. 24, 2015	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Reverse stock split price per shares	$ 5.58
Reverse stock split description	The Company effected a reverse stock split, in which every nine shares of its common stock issued and outstanding immediately prior to the effective time, which was 5:30 p.m. ET on July 9, 2019, were combined into one share of common stock.	1-for-9 reverse stock split
Proceeds of equity issuance costs net												$ 8,000	$ 19,000
Stock issued during period, value, new issues								$ 1,992,000		$ 2,924,000	$ 854,000
Proceeds from issuance of common stock												1,992,000	3,778,000
Number of shares issued in transaction, value													3,000,000
Preferred stock, shares outstanding
Proceeds from warrants exercised												$ 21,000
Warrant [Member]
Class of Stock [Line Items]
Number of shares issued during period							108,147					108,147
Proceeds from warrants exercised							$ 292,000					$ 292,000	$ 138,000
Exercise of common stock warrants							108,149					108,149	50,739
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Number of shares issued in transaction, value												$ 1,041,000		$ 2,300,000
Preferred stock, shares outstanding				150,000
Proceeds from indebtedness				$ 250,000
Entities Controlled by Member of Management and by Lambda Investors, LLC [Member]
Class of Stock [Line Items]
Number of shares issued during period													50,739
Proceeds from warrants exercised							$ 12,000					$ 12,000	$ 22,000
Exercise of common stock warrants							4,444					4,444	8,147
Stock Purchase Agreement [Member] | Accredited Investors [Member] | May 2019 Private Placement [Member]
Class of Stock [Line Items]
Number of shares sold during the period			493,827
Gross proceeds from issuance of private placement			$ 2,000,000
Sale of stock, price per share			$ 4.05
Proceeds of equity issuance costs net			$ 8,000
Proceeds from private placement			1,992,000
Stock issued during period, value, new issues			12,346
Proceeds from issuance of common stock			$ 50,000
Stock Purchase Agreement [Member] | Accredited Investors [Member] | April 2018 Private Placement [Member]
Class of Stock [Line Items]
Number of shares sold during the period					726,735
Gross proceeds from issuance of private placement					$ 2,943,000
Sale of stock, price per share					$ 4.05
Proceeds of equity issuance costs net					$ 19,000
Proceeds from private placement					2,924,000
Stock issued during period, value, new issues					24,331
Proceeds from issuance of common stock					$ 98,550
Securities Purchase Agreement [Member] | Lincoln Park Capital Fund LLC [Member]
Class of Stock [Line Items]
Stock issued during period, value, new issues						$ 10,000,000
Proceeds from issuance of common stock													$ 854,000
Limited liability company description for purchase shares level						The Company had the right to sell to Lincoln Park, and Lincoln Park was obligated to purchase, up to $10.0 million in shares of the Company's common stock, subject to certain limitations, from time to time, over the 36-month period commencing on September 4, 2015.
Number of shares issued during period													200,000
Series A Preferred Stock Purchase Agreement [Member] | Specialty Renal Products, Inc. [Member]
Class of Stock [Line Items]
Number of shares sold during the period				600,000
Sale of stock, price per share				$ 5.00
Number of shares issued in transaction, value				$ 3,000,000
Equity interest				62.50%
Ownership percentage				100.00%
Dividends per share rate				$ 0.40
Series A Preferred Stock Purchase Agreement [Member] | Specialty Renal Products, Inc. [Member] | Entities Controlled by Member of Management [Member]
Class of Stock [Line Items]
Number of shares issued during period				18,000
Series A Preferred Stock Purchase Agreement [Member] | Specialty Renal Products, Inc. [Member]
Class of Stock [Line Items]
Transaction-related expenses									$ 30,000				$ 30,000
Series A Preferred Stock Purchase Agreement [Member] | Specialty Renal Products, Inc. [Member] | Lambda, Majority Shareholder [Member]
Class of Stock [Line Items]
Number of shares issued during period				400,000
Series A Preferred Stock Purchase Agreement [Member] | Holders of Series A Preferred [Member] | Specialty Renal Products, Inc. [Member]
Class of Stock [Line Items]
Equity interest				37.50%
Ownership percentage				100.00%
Maximum [Member]
Class of Stock [Line Items]
Reverse split shares of common stock issued and outstanding	69,000,000
Minimum [Member]
Class of Stock [Line Items]
Reverse split shares of common stock issued and outstanding	7,700,000