CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Total revenues	$ 82,598	$ 64,129
Cost of revenues
Total cost of revenues	16,065	13,618
Gross profit	66,533	50,511
Operating expenses
Sales and marketing	44,785	35,848
Research and development	11,747	10,307
General and administrative	17,338	13,679
Total operating expenses	73,870	59,834
Loss from operations	(7,337)	(9,323)
Other income (expense)
Interest income	2,409	695
Interest expense	(5,685)
Other income (expense), net	(3,276)	695
Loss before income taxes	(10,613)	(8,628)
Provision for income taxes	357	403
Net loss	(10,970)	(9,031)
Net loss attributable to non-controlling interest	(328)	(250)
Adjustment attributable to non-controlling interest	2,201
Net loss attributable to BlackLine, Inc.	$ (12,843)	$ (8,781)
Basic net loss per share attributable to BlackLine, Inc.	$ (0.23)	$ (0.16)
Shares used to calculate basic net loss per share	56,174	54,835
Diluted net loss per share attributable to BlackLine, Inc.	$ (0.23)	$ (0.16)
Shares used to calculate diluted net loss per share	56,174	54,835
Subscription and Support
Revenues
Total revenues	$ 77,035	$ 61,274
Cost of revenues
Total cost of revenues	11,380	10,832
Professional Services
Revenues
Total revenues	5,563	2,855
Cost of revenues
Total cost of revenues	$ 4,685	$ 2,786