Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($)	Total	Common Stock	Additional Paid-in- Capital	Accumulated Deficit	Non-Controlling Interest
Balance (in shares) at Sep. 30, 2017		12,437,916
Balance at Sep. 30, 2017	$ 38,903,000	$ 248,000	$ 66,955,000	$ (28,315,000)	$ 15,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation for restricted stock units	258,000		258,000
Net income (loss)	(8,040,000)			(8,040,000)
Balance (in shares) at Dec. 31, 2017		12,437,916
Balance at Dec. 31, 2017	31,121,000	$ 248,000	67,213,000	(36,355,000)	15,000
Balance (in shares) at Sep. 30, 2017		12,437,916
Balance at Sep. 30, 2017	38,903,000	$ 248,000	66,955,000	(28,315,000)	15,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Warrant liability reclassification	16,791,000
Balance (in shares) at Mar. 31, 2018		12,489,501
Balance at Mar. 31, 2018	45,981,000	$ 249,000	84,339,000	(38,607,000)	0
Balance (in shares) at Dec. 31, 2017		12,437,916
Balance at Dec. 31, 2017	31,121,000	$ 248,000	67,213,000	(36,355,000)	15,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation for restricted stock units	418,000		418,000
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding (in shares)		51,585
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding	(82,000)	$ 1,000	(83,000)
Warrant liability reclassification	16,791,000		16,791,000
Deconsolidation of subsidiary	(15,000)				(15,000)
Net income (loss)	(2,252,000)			(2,252,000)
Balance (in shares) at Mar. 31, 2018		12,489,501
Balance at Mar. 31, 2018	45,981,000	$ 249,000	84,339,000	(38,607,000)	0
Balance (in shares) at Sep. 30, 2018		12,541,890
Balance at Sep. 30, 2018	46,935,000	$ 250,000	86,510,000	(39,825,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation for restricted stock units	1,322,000		1,322,000
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding (in shares)		68,655
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding	(101,000)	$ 2,000	(103,000)
Net income (loss)	956,000			956,000
Balance (in shares) at Dec. 31, 2018		12,610,545
Balance at Dec. 31, 2018	48,977,000	$ 252,000	87,729,000	(39,004,000)	0
Balance (in shares) at Sep. 30, 2018		12,541,890
Balance at Sep. 30, 2018	46,935,000	$ 250,000	86,510,000	(39,825,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Warrant liability reclassification	0
Balance (in shares) at Mar. 31, 2019		12,899,866
Balance at Mar. 31, 2019	47,541,000	$ 258,000	89,072,000	(41,789,000)	0
Balance (in shares) at Dec. 31, 2018		12,610,545
Balance at Dec. 31, 2018	48,977,000	$ 252,000	87,729,000	(39,004,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares of common stock for warrant exercises		38
Stock-based compensation for restricted stock units	1,480,000		1,480,000
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding (in shares)		289,283
Issuance of shares of common stock with respect to vested restricted stock units, net of shares tendered for tax withholding	(131,000)	$ 6,000	(137,000)
Net income (loss)	(2,785,000)			(2,785,000)
Balance (in shares) at Mar. 31, 2019		12,899,866
Balance at Mar. 31, 2019	$ 47,541,000	$ 258,000	$ 89,072,000	$ (41,789,000)	$ 0