CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net revenues		$ 77,122	$ 88,105
Costs and expenses:
Cost of revenues	[1]	35,471	38,953
Research and development		19,788	19,681
Selling, general and administrative		26,344	29,246
Restructuring charges		1,450	421
Depreciation and amortization		11,356	20,143
Total costs and expenses	[1]	94,409	108,444
Loss from continuing operations		(17,287)	(20,339)
Interest income		58	189
Interest expense		(245)	(585)
Gain (loss) on extinguishment of debt		0	387
Other Income, net		1,692	463
Equity method investment loss		0	(1,243)
Loss from continuing operations, before taxes		(15,782)	(21,128)
Benefit for income taxes		12,432	1,391
Net loss		(3,350)	(19,737)
Net loss attributable to redeemable noncontrolling interests		(17)	(313)
Preferred stock dividend		(8,909)	(7,537)
Net loss attributable to Synchronoss		$ (12,276)	$ (27,587)
Earnings per share
Basic (in dollars per share)		$ (0.30)	$ (0.68)
Diluted (in dollars per share)		$ (0.30)	$ (0.68)
Weighted-average common shares outstanding:
Basic (in shares)		41,483	40,320
Diluted (in shares)		41,483	40,320

[1] Cost of revenues excludes depreciation and amortization which are shown separately.