CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total Santa Fe Shareholders' Deficit	Noncontrolling Interest [Member]
Balance at Jun. 30, 2017	$ (77,475,000)	$ 134,000	$ 8,808,000	$ (58,938,000)	$ (951,000)	$ (50,947,000)	$ (26,528,000)
Balance (in shares) at Jun. 30, 2017		1,339,638
Net (loss) income	85,000	$ 0	0	(84,000)	0	(84,000)	169,000
Balance at Sep. 30, 2017	(77,390,000)	$ 134,000	8,808,000	(59,022,000)	(951,000)	(51,031,000)	(26,359,000)
Balance (in shares) at Sep. 30, 2017		1,339,638
Balance at Jun. 30, 2017	(77,475,000)	$ 134,000	8,808,000	(58,938,000)	(951,000)	(50,947,000)	(26,528,000)
Balance (in shares) at Jun. 30, 2017		1,339,638
Net (loss) income	(4,367,000)
Balance at Dec. 31, 2017	(81,842,000)	$ 134,000	8,808,000	(62,224,000)	(951,000)	(54,233,000)	(27,609,000)
Balance (in shares) at Dec. 31, 2017		1,339,638
Balance at Sep. 30, 2017	(77,390,000)	$ 134,000	8,808,000	(59,022,000)	(951,000)	(51,031,000)	(26,359,000)
Balance (in shares) at Sep. 30, 2017		1,339,638
Net (loss) income	(4,452,000)	$ 0	0	(3,202,000)	0	(3,202,000)	(1,250,000)
Balance at Dec. 31, 2017	(81,842,000)	$ 134,000	8,808,000	(62,224,000)	(951,000)	(54,233,000)	(27,609,000)
Balance (in shares) at Dec. 31, 2017		1,339,638
Balance at Jun. 30, 2018	(74,057,000)	$ 134,000	8,808,000	(57,442,000)	(951,000)	(49,451,000)	(24,606,000)
Balance (in shares) at Jun. 30, 2018		1,339,638
Net (loss) income	1,067,000	$ 0	0	566,000	0	566,000	501,000
Balance at Sep. 30, 2018	(72,990,000)	$ 134,000	8,808,000	(56,876,000)	(951,000)	(48,885,000)	(24,105,000)
Balance (in shares) at Sep. 30, 2018		1,339,638
Balance at Jun. 30, 2018	(74,057,000)	$ 134,000	8,808,000	(57,442,000)	(951,000)	(49,451,000)	(24,606,000)
Balance (in shares) at Jun. 30, 2018		1,339,638
Net (loss) income	697,000
Balance at Dec. 31, 2018	(73,360,000)	$ 134,000	8,808,000	(57,402,000)	(951,000)	(49,411,000)	(23,949,000)
Balance (in shares) at Dec. 31, 2018		1,339,638
Balance at Sep. 30, 2018	(72,990,000)	$ 134,000	8,808,000	(56,876,000)	(951,000)	(48,885,000)	(24,105,000)
Balance (in shares) at Sep. 30, 2018		1,339,638
Net (loss) income	(370,000)	$ 0	0	(526,000)	0	(526,000)	156,000
Balance at Dec. 31, 2018	$ (73,360,000)	$ 134,000	$ 8,808,000	$ (57,402,000)	$ (951,000)	$ (49,411,000)	$ (23,949,000)
Balance (in shares) at Dec. 31, 2018		1,339,638