CONVERTIBLE REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

12 Months Ended

Jul. 31, 2016

Jan. 31, 2016

The following table summarizes significant ranges of outstanding and exercisable options as of July 31, 2016:

	Options Outstanding				Options Vested and Exercisable
Range of Exercise Price	Number Outstanding	Weighted Average Remaining Contractual Life (in Years)	Weighted Average Exercise Price		Number Vested and Exercisable	Weighted Average Exercise Price
$0.25 - $0.62	2,547,259	9.05	$	0.54	781,418	$	0.42
$0.63 - $1.00	887,100	9.56	$	0.73	108,332	$	0.96
$1.01 - $1.67	1,365,666	9.12	$	1.52	209,890	$	1.57
$1.68 - $3.00	636,000	8.12	$	2.04	403,039	$	2.06
$3.01 - $3.25	45,000	0.14	$	3.25	45,000	$	3.25

	5,481,025	8.97	$	1.00	1,547,679	$	1.12

	Options Outstanding						Options Vested and Exercisable
Range of Exercise Price	Number Outstanding		Weighted Average Remaining Contractual Life (in Years)		Weighted Average Exercise Prices		Number Vested and Exercisable		Weighted Average Exercise Prices
$0.25 - $1.00		882,108		7.48	$	0.41		570,340	$	0.41
$1.01 - $1.67		1,264,000		9.74	$	1.49		51,664	$	1.48
$1.68 - $3.00		988,500		8.09	$	2.28		437,705	$	2.02
$3.01 - $3.25		230,000		9.33	$	3.25		—		—

		3,364,608		8.63	$	1.56		1,059,709	$	1.13

	Available for Grant		Shares		Weighted Average Exercise Prices		Remaining Contractual Life	Aggregate Intrinsic Value
								(in thousands)
Outstanding as of January 1, 2016	350,875		2,704,608		$	1.59	8.37	$	1,343
Exercised	—		(54,333	)	$	0.33
Cancelled	87,500		(87,500	)	$	1.85

Outstanding as of April 30 2016	438,375		2,562,775		$	1.61	8.42	$	340
Shares authorized for issuance	4,000,000		—
Granted	(2,635,000	)	2,635,000		$	0.64
Exercised	—		(18,334	)	$	0.35
Cancelled	358,416		(358,416	)	$	2.19
Expired upon termination of the 2014 Plan	(21,691	)	—		$	—

Outstanding as of July 31, 2016	2,140,100		4,821,025		$	0.95	8.94	$	502

Vested and exercisable			1,547,679		$	1.12	7.68	$	237

Vested and expected to vest			4,295,839		$	0.97	8.85	$	462

	Available for Grant			Shares			Weighted Average Exercise Prices		Remaining Contractual Life		Aggregate Intrinsic Value
											(in thousands)
Balance at January 1, 2013		1,550,000			1,150,000		$	0.06
Granted		(1,456,000	)		1,456,000			0.40

Balance at December 31, 2013		94,000			2,606,000		$	0.25
Additional shares authorized		1,800,000			—			—
Granted		(891,000	)		891,000			1.85
Exercised		—			(727,643	)		0.14
Cancelled		160,000			(160,000	)		0.37

Balance at December 31, 2014		1,163,000			2,609,357		$	0.82		8.52	$	5,686
Granted		(130,000	)		130,000			2.75
Exercised		—			(40,105	)		0.95
Cancelled		10,000			(10,000	)		1.85

Balance at January 31, 2015		1,043,000			2,689,252		$	0.91		8.58	$	5,625
Granted		(1,274,000	)		1,274,000			2.25
Exercised		—			(676,769	)		0.12
Cancelled		581,875			(581,875	)		1.59

Balance at January 31, 2016		350,875			2,704,608		$	1.59		8.37	$	1,343


Vested and exercisable					1,059,709		$	1.13		7.34	$	794


Vested and expected to vest					2,467,713		$	1.55		8.29	$	1,287

	Shares	Weighted Average Exercise Prices		Remaining Contractual Life	Aggregate Intrinsic Value
					(in thousands)
Balance at January 31, 2016, April 30, 2016 and July 31, 2016	660,000	$	1.44	9.22	$	—

Vested and exercisable	—	$	—	—	$	—

Vested and expected to vest	561,692	$	1.44	9.22	$	—

	Shares		Weighted Average Exercise Prices		Remaining Contractual Life		Aggregate Intrinsic Value
							(in thousands)
Balance at January 31, 2015		—		—		—		—
Granted		660,000	$	1.44

Balance at January 31, 2016		660,000	$	1.44		9.72	$	227


Vested and exercisable		—	$	—		—	$	—


Vested and expected to vest		529,212	$	1.44		9.72	$	182