Segment Reporting (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Information

The tables below present segment information reconciled to total Company loss from operations, with segment operating loss including gross profit less direct research and development expenses and direct selling, general and administrative expenses to the extent specifically identified by segment:

	Three Months Ended March 31, 2019
	Water Filtration			Renal Products			Nephros, Inc. Consolidated
Total net revenues	$	1,769,000		$	-		$	1,769,000
Gross margin		998,000			-			998,000
Research and development expenses		345,000			411,000			756,000
Depreciation and amortization expense		50,000			-			50,000
Selling, general and administrative expenses		1,469,000			34,000			1,503,000
Change in fair value of contingent consideration		(10,000	)		-			(10,000	)
Total operating expenses		(1,854,000	)		(445,000	)		(2,299,000	)
Loss from operations	$	(856,000	)	$	(445,000	)	$	(1,301,000	)

	Three Months Ended March 31, 2018
	Water Filtration			Renal Products			Nephros, Inc. Consolidated
Total net revenues	$	985,000		$	-		$	985,000
Gross margin		467,000			-			467,000
Research and development expenses		189,000			100,000			289,000
Depreciation and amortization expense		41,000			-			41,000
Selling, general and administrative expenses		1,250,000			10,000			1,260,000
Total operating expenses		(1,480,000	)		(110,000	)		(1,590,000	)
Loss from operations	$	(1,013,000	)	$	(110,000	)	$	(1,123,000	)

The tables below present segment information reconciled to total Company loss from operations, with segment operating loss including gross profit less direct research and development expenses and direct selling, general and administrative expenses to the extent specifically identified by segment:

	Year Ended December 31, 2018
		Water Filtration			Renal Products			Nephros, Inc. Consolidated
Total net revenues		$	5,687,000		$	-		$	5,687,000
Gross margin			3,203,000			-			3,203,000
Research and development expenses			808,000			731,000			1,539,000
Depreciation and amortization expense			163,000			-			163,000
Selling, general and administrative expenses			4,340,000			177,000			4,517,000
Total operating expenses			(5,311,000	)		(908,000	)		(6,219,000	)
Loss from operations		$	(2,108,000	)	$	(908,000	)	$	(3,016,000	)

	Year Ended December 31, 2017
		Water Filtration			Renal Products			Nephros, Inc. Consolidated
Total net revenues		$	3,809,000		$	-		$	3,809,000
Gross margin			2,292,000			-			2,292,000
Research and development expenses			970,000			32,000			1,002,000
Depreciation and amortization expense			218,000			-			218,000
Selling, general and administrative expenses			3,286,000			12,000			3,298,000
Total operating expenses			(4,474,000	)		(44,000	)		(4,518,000	)
Loss from operations		$	(2,182,000	)	$	(44,000	)	$	(2,226,000	)