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v3.19.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Class A | Class B | Class A common stock Class A | Class A common stock Class B | Treasury stock | Additional paid-in capital | Accumulated deficit
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2017 |  |  |  | 5,056 | 38,736 |  |  |
Beginning Balance at Dec. 31, 2017 | $ 89,999 |  |  | $ 53 | $ 387 |  | $ 343,268 | $ (253,709)
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net | 27 |  |  |  | $ 1 |  | 26 |
Issuance of common stock from exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net (in shares) |  |  |  |  | 36 |  |  |
Stock compensation from options and restricted stock, net of forfeitures | 951 |  |  |  |  |  | 951 |
Cumulative effect of a change in accounting principle related to revenue recognition | ASC 606 | 189 |  |  |  |  |  |  | 189
Net loss | (926) |  |  |  |  |  |  | (926)
Ending Balance at Mar. 31, 2018 | 90,240 |  |  | $ 53 | $ 388 |  | 344,245 | (254,446)
Ending Balance (in shares) at Mar. 31, 2018 |  |  |  | 5,056 | 38,772 |  |  |
Beginning Balance (in shares) at Dec. 31, 2018 |  | 5,056 | 36,965 | 5,056 | 36,965 |  |  |
Beginning Balance at Dec. 31, 2018 | 95,026 |  |  | $ 53 | $ 370 |  | 350,801 | (256,198)
Issuance of common stock upon exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net | 194 |  |  |  | $ 1 | $ (1) | 194 |
Issuance of common stock from exercise of options, issuance and vesting of restricted stock and under employee stock purchase plan, net (in shares) |  |  |  |  | 129 | (90) |  |
Stock compensation from options and restricted stock, net of forfeitures | 545 |  |  |  |  |  | 545 |
Net loss | (1,299) |  |  |  |  |  |  | (1,299)
Ending Balance at Mar. 31, 2019 | $ 94,466 |  |  | $ 53 | $ 371 | $ (1) | $ 351,540 | $ (257,497)
Ending Balance (in shares) at Mar. 31, 2019 |  | 5,056 | 37,004 | 5,056 | 37,094 |  |  |
Ending Balance, share at Mar. 31, 2019 |  |  |  |  |  | (90) |  |

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