Redeemable Convertible Preferred Stock (Details) $ / shares in Units, $ in Thousands	1 Months Ended					12 Months Ended
	Nov. 30, 2014 USD ($) shares	Nov. 30, 2013 USD ($) shares	May. 31, 2013 USD ($) shares	Nov. 30, 2012 USD ($) shares	Jan. 31, 2012 USD ($) shares	Dec. 31, 2015 $ / shares	Dec. 31, 2014 $ / shares shares	Dec. 31, 2013 USD ($) shares	Dec. 31, 2011 USD ($) shares
Series C Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Proceeds from Issuance of Redeemable Convertible Promissory Bridge Notes and Accrued Interest								$ 4,900
Preferred Stock [Member] | Series B Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Shares issued (in shares) | shares					1,701,909
Proceeds from issuance of stock					$ 10,400
Issuance costs					$ 22
Preferred stock dividend rate, (in USD per share) | $ / shares						$ 0.49
Preferred Stock [Member] | Series B-1 Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Preferred stock dividend rate, (in USD per share) | $ / shares						0.49
Preferred Stock [Member] | Series B-2 Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Preferred stock dividend rate, (in USD per share) | $ / shares						$ 0.49
Preferred Stock [Member] | Series C Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Shares issued (in shares) | shares								1,918,048
Proceeds from issuance of stock								$ 19,700
Issuance costs								$ 82
Preferred stock dividend rate, percentage							8.00%
Preferred Stock [Member] | Redeemable Convertible Preferred Stock, Series A Preferred Stock [Member]
Temporary Equity [Line Items]
Shares issued (in shares) | shares					169,054				2,652,110
Proceeds from issuance of stock					$ 1,000				$ 16,000
Issuance costs					$ 24				$ 199
Preferred stock dividend rate, (in USD per share) | $ / shares							$ 0.49
EPM Live [Member] | Preferred Stock [Member] | Series B-1 Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Numbers of share issued in acquisition | shares				131,168
Value of shares issued in acquisition				$ 800
Preferred stock vesting period				24 months
FileBound [Member] | Preferred Stock [Member] | Series B-1 Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Numbers of share issued in acquisition | shares			106,572
Value of shares issued in acquisition			$ 624
ComSci [Member] | Preferred Stock [Member] | Series B-2 Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Numbers of share issued in acquisition | shares		155,598
Value of shares issued in acquisition		$ 949
Common Stock [Member]
Temporary Equity [Line Items]
Issuance costs	$ 4,100
Issuance of common stock upon conversion of preferred stock (in shares) | shares	6,834,476						6,834,476
Conversion ratio for shares of preferred stock	1