EARNINGS PER SHARE - Schedule of Calculation of Basic and Diluted EPS (Details) (USD $)	3 Months Ended				12 Months Ended	11 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2014
Numerator:
Net income attributable to Class A common shareholders	$ 4,374,000	$ 14,656,000	$ 12,505,000	$ 12,652,000	$ 44,186,678
Denominator:
Weighted average number of shares of Class A common stock outstanding					49,296,417
Basic net income per share of Class A common stock (in dollars per share)	$ 0.09	$ 0.30	$ 0.26	$ 0.26
Numerator:
Net income attributable to Class A common shareholders	4,374,000	14,656,000	12,505,000	12,652,000	44,186,678
Denominator:
Weighted average number of shares of Class A common stock outstanding					49,296,417
Add - dilutive effect of:
Diluted weighted average number of shares of Class A common stock outstanding					97,583,310
Diluted net income per share of Class A common stock (in dollars per share)	$ 0.09	$ 0.28	$ 0.22	$ 0.24
Class A common stock
Numerator:
Net income attributable to Class A common shareholders					44,186,678	44,187,000
Denominator:
Weighted average number of shares of Class A common stock outstanding						49,296,417
Basic net income per share of Class A common stock (in dollars per share)					$ 0.90	$ 0.90
Numerator:
Net income attributable to Class A common shareholders					44,186,678	44,187,000
Add (deduct) - dilutive effect of:
Amounts attributable to operating partnership’s share of Ladder Capital Corp net income						66,436,000
Additional corporate tax						(26,395,000)
Diluted net income attributable to Class A common shareholders						$ 84,228,000
Denominator:
Weighted average number of shares of Class A common stock outstanding						49,296,417
Add - dilutive effect of:
Shares issuable relating to converted Class B common shareholders						48,145,875
Incremental shares of unvested Class A restricted stock						141,018
Diluted weighted average number of shares of Class A common stock outstanding						97,583,310
Diluted net income per share of Class A common stock (in dollars per share)					$ 0.86	$ 0.86