Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net loss from continuing operations					$ 25,876	$ 1,950	$ (1,170)
Net (income) loss attributable to noncontrolling interests					(750)		(80)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest					750	76	(97)
Preferred Stock Dividends, Income Statement Impact					(1,983)	0	0
Net income attributable to participating securities					(302)	(223)	(102)
Loss from continuing operations attributable to Rexford Industrial Realty, Inc.					22,841	1,651	(1,175)
Income from discontinued operations					0	0	2,146
Income from discontinued operations attributable to noncontrolling interests					0	0	(177)
Income from discontinued operations attributable to Rexford Industrial Realty, Inc.					0	0	1,969
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS					$ 22,841	$ 1,651	$ 794
Denominator:
Weighted average shares of common stock outstanding - basic and diluted (in shares)					62,723,021	54,024,923	31,953,506
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares					242,533	0	0
Weighted average shares of common stock outstanding - diluted (in dollars per share)					62,965,554	54,024,923	31,953,506
Earnings per share - Basic and Diluted:
Net income (loss) from continuing operations available to common stockholders (in dollars per share)					$ 0.36	$ 0.03	$ (0.04)
Net income from discontinued operations available to common stockholders (in dollars per share)					0.00	0.00	0.06
Net income (loss) available to common stockholders (in dollars per share)	$ 0.02	$ 0.01	$ 0.00	$ 0.00	$ 0.36	$ 0.03	$ 0.02