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CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS EQUITY (DEFICIT) - USD ($) $ in Thousands | Total | Series E-1 Redeemable Convertible Preferred Stock | Series B Redeemable Convertible Preferred Stock | Series C Redeemable Convertible Preferred Stock | Series D-1 Redeemable Convertible Preferred Stock | Series F Redeemable Convertible Preferred Stock | Series A Redeemable Convertible Preferred Stock | Class A and Class B Common Stock | Crocodoc Inc | Crocodoc Inc Class A and Class B Common Stock | Redeemable Convertible Preferred Stock | Additional Paid-in Capital | Additional Paid-in Capital Crocodoc Inc | Treasury Stock | Accumulated Other Comprehensive Income | Accumulated Deficit
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Balance, Beginning at Jan. 31, 2013 | $ (183,656) |  |  |  |  |  |  |  | $ 1 |  |  | $ 281,899 | $ 10,129 |  | $ (1,177) |  | $ (192,609)
Balance, Beginning, Shares at Jan. 31, 2013 |  |  |  |  |  |  |  |  | 10,429,000 |  |  | 69,999,000 |  |  |  |  |
Issuance of Stock |  |  | $ 99,944 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Stock (in shares) |  |  | 5,555,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable convertible preferred stock exercise of warrants | 10,000 |  |  | $ 6,669 | $ 3,168 | $ 1,196 |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable convertible preferred stock exercise of warrants (in shares) |  |  |  | 423,000 | 199,000 | 62,000 |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with acquisition |  |  |  |  |  |  |  |  |  | $ 4,742 |  |  |  | $ 4,742 |  |  |
Issuance of common stock in connection with acquisition (in shares) |  |  |  |  |  |  |  |  |  |  | 813,000 |  |  |  |  |  |
Issuance of common stock upon exercise of stock options | 2,077 |  |  |  |  |  |  |  |  |  |  |  | 2,077 |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) |  |  |  |  |  |  |  |  | 2,268,000 |  |  |  |  |  |  |  |
Stock-based compensation related to stock awards | 11,749 |  |  |  |  |  |  |  |  |  |  |  | 11,749 |  |  |  |
Stock-based compensation related to stock awards (in shares) |  |  |  |  |  |  |  |  | 395,000 |  |  |  |  |  |  |  |
Issuance of common stock in connection with the purchase of intangible assets | 324 |  |  |  |  |  |  |  |  |  |  |  | 324 |  |  |  |
Issuance of common stock in connection with the purchase of intangible assets (in shares) |  |  |  |  |  |  |  |  | 50,000 |  |  |  |  |  |  |  |
Vesting of early exercised stock options | 1,135 |  |  |  |  |  |  |  |  |  |  |  | 1,135 |  |  |  |
Accretion of redeemable convertible preferred stock to redemption value | (341) |  |  |  |  |  |  |  |  |  |  | $ 341 | (341) |  |  |  |
Other comprehensive income (loss) | 15 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15 |
Net loss | (168,557) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (168,557)
Balance, Ending at Jan. 31, 2014 | (332,512) |  |  |  |  |  |  |  | $ 1 |  |  | $ 393,217 | 29,815 |  | (1,177) | 15 | (361,166)
Balance, Ending, Shares at Jan. 31, 2014 |  |  |  |  |  |  |  |  | 13,955,000 |  |  | 76,238,000 |  |  |  |  |
Issuance of Stock | 181,477 |  |  |  |  |  | $ 149,614 |  | $ 2 |  |  |  | 181,475 |  |  |  |
Issuance of Stock (in shares) |  |  |  |  |  |  | 7,500,000 |  | 14,375,000 |  |  |  |  |  |  |  |
Issuance of redeemable convertible preferred stock exercise of warrants | 1,220 |  |  |  |  |  |  | $ 1,220 |  |  |  |  |  |  |  |  |
Issuance of redeemable convertible preferred stock exercise of warrants (in shares) |  |  |  |  |  |  |  | 85,000 |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with acquisition | 5,239 |  |  |  |  |  |  |  |  |  |  |  | 5,239 |  |  |  |
Issuance of common stock in connection with acquisition (in shares) |  |  |  |  |  |  |  |  | 409,000 |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of stock options | $ 5,918 |  |  |  |  |  |  |  |  |  |  |  | 5,918 |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) | 2,306,816 |  |  |  |  |  |  |  | 2,307,000 |  |  |  |  |  |  |  |
Stock-based compensation related to stock awards | $ 31,929 |  |  |  |  |  |  |  |  |  |  |  | 31,929 |  |  |  |
Stock-based compensation related to stock awards (in shares) |  |  |  |  |  |  |  |  | 343,000 |  |  |  |  |  |  |  |
Vesting of restricted stock units and restricted stock awards, net of shares withheld for employee payroll taxes |  |  |  |  |  |  |  |  | 38,000 |  |  |  |  |  |  |  |
Employee payroll taxes withheld related to vesting of restricted stock units and restricted stock awards | (359) |  |  |  |  |  |  |  |  |  |  |  | (359) |  |  |  |
Vesting of early exercised stock options | 684 |  |  |  |  |  |  |  |  |  |  |  | 684 |  |  |  |
Accretion of redeemable convertible preferred stock to redemption value | (11,503) |  |  |  |  |  |  |  |  |  |  | $ 11,503 | (11,503) |  |  |  |
Deemed dividend on the conversion of Series F redeemable convertible preferred stock | (2,262) |  |  |  |  |  | $ 2,262 |  |  |  |  | $ 2,262 | (2,262) |  |  |  |
Deemed dividend on the conversion of Series F redeemable convertible preferred stock (in shares) |  |  |  |  |  |  | 4,405,000 |  |  |  |  | 4,405,000 |  |  |  |  |
Conversion of redeemable convertible preferred stock to common stock | 557,816 |  |  |  |  |  |  |  | $ 9 |  |  | $ (557,816) | 557,807 |  |  |  |
Conversion of redeemable convertible preferred stock to common stock (in shares) |  |  |  |  |  |  |  |  | 88,228,000 |  |  | (88,228,000) |  |  |  |  |
Other comprehensive income (loss) | (71) | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  | (71) |
Net loss | (168,227) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (168,227)
Balance, Ending at Jan. 31, 2015 | 268,129 |  |  |  |  |  |  |  | $ 12 |  |  |  | 798,743 |  | (1,177) | (56) | (529,393)
Balance, Ending, Shares at Jan. 31, 2015 |  |  |  |  |  |  |  |  | 119,655,000 |  |  |  |  |  |  |  |
Issuance of common stock in connection with acquisition | 6,108 |  |  |  |  |  |  |  |  |  |  |  | 6,108 |  |  |  |
Issuance of common stock in connection with acquisition (in shares) |  |  |  |  |  |  |  |  | 344,000 |  |  |  |  |  |  |  |
Issuance of common stock upon exercise of stock options | $ 7,164 |  |  |  |  |  |  |  |  |  |  |  | 7,164 |  |  |  |
Issuance of common stock upon exercise of stock options (in shares) | 2,196,516 |  |  |  |  |  |  |  | 2,197,000 |  |  |  |  |  |  |  |
Stock-based compensation related to stock awards | $ 59,504 |  |  |  |  |  |  |  |  |  |  |  | 59,504 |  |  |  |
Vesting of restricted stock units and restricted stock awards, net of shares withheld for employee payroll taxes |  |  |  |  |  |  |  |  | 1,016,000 |  |  |  |  |  |  |  |
Employee payroll taxes withheld related to vesting of restricted stock units and restricted stock awards | (10,436) |  |  |  |  |  |  |  |  |  |  |  | (10,436) |  |  |  |
Restricted stock awards granted to non-employees (in shares) |  |  |  |  |  |  |  |  | 11,000 |  |  |  |  |  |  |  |
Restricted stock awards forfeited due to termination (in shares) |  |  |  |  |  |  |  |  | (13,000) |  |  |  |  |  |  |  |
Vesting of shares subject to repurchase | 126 |  |  |  |  |  |  |  |  |  |  |  | 126 |  |  |  |
Repurchase of shares |  |  |  |  |  |  |  |  | (24,000) |  |  |  |  |  |  |  |
Common stock issued under employee stock purchase plan | 10,282 |  |  |  |  |  |  |  |  |  |  |  | 10,282 |  |  |  |
Common stock issued under employee stock purchase plan (in shares) |  |  |  |  |  |  |  |  | 935,000 |  |  |  |  |  |  |  |
Other comprehensive income (loss) | (28) | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  | (28) |
Net loss | (202,948) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (202,948)
Balance, Ending at Jan. 31, 2016 | $ 137,901 |  |  |  |  |  |  |  | $ 12 |  |  |  | $ 871,491 |  | $ (1,177) | $ (84) | $ (732,341)
Balance, Ending, Shares at Jan. 31, 2016 |  |  |  |  |  |  |  |  | 124,121,000 |  |  |  |  |  |  |  |
[1] | Tax effect was not material

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