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Stockholders' Equity (Common Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 14, 2016 | Nov. 13, 2015 | Dec. 10, 2014 | Nov. 21, 2014 | Nov. 30, 2016 | Jul. 31, 2016 | Mar. 31, 2016 | Nov. 30, 2015 | Dec. 31, 2014 | Nov. 30, 2014 | Sep. 30, 2014 | Jan. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized, common stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 50,000,000 | 50,000,000 |
Shares authorized, preferred stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 |  |
Par value, common stock (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |
Par value, preferred stock (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001 |  |
Shares reserved for issuance upon completion of certain documentation (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 839,477 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in initial public offering (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 3,846,154
Proceeds from IPO issuance |  |  |  |  |  |  |  |  |  | $ 42,900 |  |  |  |  |
Issuance costs |  |  |  |  |  |  |  |  |  | $ 4,100 |  |  |  |  |
Issuance of common stock upon conversion of preferred stock (in shares) |  |  |  |  |  |  |  |  |  | 6,834,476 |  |  |  |  | 6,834,476
Issuance of common stock, acquisitions (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 1,344,463 | 233,679 | 577,486
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) |  |  |  |  |  |  |  |  |  | 41,664 | 294,010 |  | 778,097 | 242,500 | 401,244
Grant date fair value of awards granted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 12.00 | $ 8.73 |  |  |  |
Share-based Compensation Award, Tranche One [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) |  |  |  |  |  |  |  |  |  |  | 40,990 |  |  |  |
Vesting period of stock options (in years) |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Share-based Compensation Award, Tranche Two [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) |  |  |  |  |  |  |  |  |  |  | 253,020 |  |  |  |
Vesting period of stock options (in years) |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |
Hipcricket, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] | ComSci [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  |  |  |  |  |  |  |  |  | 1,803,574 |  |  |
Common Stock [Member] | Solution Q [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  | 150,977 |  |  |  |  |  | 150,977 |  |  |  |  |
Vesting period of stock options (in years) |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Value of shares issued in acquisition |  |  |  | $ 1,600 |  |  |  |  |  | $ 1,600 |  |  |  |  |
Common Stock [Member] | Mobile Commons [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  | 386,253 |  |  |  |  |  | 386,253 |  |  |  |  |  |
Issuance of common stock, acquisitions (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 316,747
Issuance of common stock to be held in escrow, acquisitions (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 44,192
Escrow holding period (in months) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 months
Shares reserved for issuance upon completion of certain documentation (in shares) |  |  |  |  |  |  |  |  | 25,314 |  |  |  |  |  | 25,314
Value of shares issued in acquisition |  |  | $ 4,500 |  |  |  |  |  | $ 4,500 |  |  |  |  |  | $ 4,500
Common Stock [Member] | Ultriva, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  | 179,298 |  |  | 24,587 |  |  | 179,298 |  |  |  |  |  |  |
Value of shares issued in acquisition |  | $ 1,400 |  |  | $ 200 |  |  | $ 1,388 |  |  |  |  |  |  |
Common Stock [Member] | Hipcricket, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |
Value of shares issued in acquisition |  |  |  |  |  |  | $ 5,700 |  |  |  |  |  |  |  |
Common Stock [Member] | LeadLander [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  |  |  | 318,302 |  |  |  |  |  |  |  |  |
Value of shares issued in acquisition |  |  |  |  |  | $ 2,400 |  |  |  |  |  |  |  |  |
IPO [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in initial public offering (in shares) |  |  |  |  |  |  |  |  |  | 3,846,154 |  |  |  |  |
Shares issued, price per share (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 12.00 |  |  |  |  |
Employee [Member] | Common Stock [Member] | Solution Q [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  |  |  |  |  |  |  | 65,570 |  |  |  |  |
Value of shares issued in acquisition |  |  |  |  |  |  |  |  |  | $ 700 |  |  |  |  |
Employee [Member] | Common Stock [Member] | Ultriva, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numbers of share issued in acquisition (in shares) |  |  |  |  |  |  |  | 45,767 |  |  |  |  |  |  |
Value of shares issued in acquisition |  |  |  |  |  |  |  | $ 400 |  |  |  |  |  |  |
Research and Development Expense [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in business combination |  |  |  |  |  |  |  |  |  |  |  | $ 11,200 |  |  |

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