Earnings Per Share (Details) (USD $)	3 Months Ended									12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income/(loss) attributable to ZAIS Financial Corp. common stockholders (Basic)	$ 194,337	[1]	$ 1,149,497	$ 23,173,931	$ 2,224,205	$ 8,062,847	$ 3,716,061	$ (6,780,401)	$ 1,659,222	$ 26,741,970	$ 6,657,728	$ 19,433,802
Effect of dilutive securities:
Net income allocated to non controlling interests										3,109,760	880,358	362,324
Exchangeable Senior Notes
Interest expense										3,240,561
Gain on derivative instruments										(256,068)
Total - Exchangeable Senior Notes										2,984,493
Net income/(loss) available to stockholders, after effect of dilutive securities										$ 32,836,223	$ 7,538,086	$ 19,796,126
Denominator:
Weighted average number of shares of common stock	7,970,886	[1]	7,970,886	7,970,886	7,970,886	7,970,886	7,970,886	7,970,886	5,142,053	7,970,886	7,273,366	2,724,252
Effect of dilutive securities:
Weighted average number of OP units										926,914	926,914	49,593
Weighted average number of shares convertible under Exchangeable Senior Notes										1,779,560
Diluted weighted average shares outstanding	8,897,800	[1]	8,897,800	10,677,360	8,897,800	9,594,150	8,897,800	8,897,800	6,068,967	10,677,360	8,200,280	2,773,845
Net income per share applicable to ZAIS Financial Corp. common stockholders - Basic	$ 0.02	[1]	$ 0.14	$ 2.91	$ 0.28	$ 1.01	$ 0.47	$ (0.85)	$ 0.32	$ 3.35	$ 0.92	$ 7.13
Net income per share applicable to ZAIS Financial Corp. common stockholders - Diluted	$ 0.02	[1]	$ 0.14	$ 2.47	$ 0.28	$ 0.98	$ 0.47	$ (0.85)	$ 0.32	$ 3.08	$ 0.92	$ 7.13

[1] On October 31, 2014 the Company, completed the acquisition of GMFS. The Company has recognized the revenues and earnings related to its investment in GMFS for the period from the acquisition date to December 31, 2014 which are reflected in its consolidated statements of operations.