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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings (Deficit) | Accumulated Other Comprehensive (Loss) Income | Total
--- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2014 | $ 142 | $ 99,084 | $ 95,336 | $ (344) | $ 194,218
Balance at beginning of period (in shares) at Dec. 31, 2014 | 14,216,540 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net loss |  |  | (26,279) |  | (26,279)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | (2,106) |
Income tax benefit (expense) |  |  |  | 626 |
Other comprehensive gain (loss) |  |  |  | (1,480) | (1,480)
Stock consideration issued in merger | $ 74 | 42,828 |  |  | 42,902
Stock consideration issued in merger (in shares) | 7,381,476 |  |  |  |
Issuance of common stock under stock compensation plans (in shares) | 14,212 |  |  |  |
Tax deficit recorded to hypothetical apic pool |  | (551) |  |  | (551)
Stock-based compensation expense |  | 890 |  |  | 890
Issuance of common stock as compensation |  | 266 |  |  | 266
Issuance of common stock as compensation (in shares) | 58,937 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (248) |  |  | (248)
Shares exchanged for taxes on stock-based compensation (in shares) | (41,855) |  |  |  |
Balance at end of period at Dec. 31, 2015 | $ 216 | 142,269 | 69,057 | (1,824) | 209,718
Balance at end of period (in shares) at Dec. 31, 2015 | 21,629,310 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net loss |  |  | (39,792) |  | (39,792)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | 496 |
Income tax benefit (expense) |  |  |  | (268) |
Other comprehensive gain (loss) |  |  |  | 228 | 228
Issuance of common stock under stock compensation plans (in shares) | 20,221 |  |  |  |
Tax deficit recorded to hypothetical apic pool |  | (77) |  |  | (77)
Stock-based compensation expense |  | 462 |  |  | 462
Issuance of common stock as compensation | $ 1 | 416 |  |  | 417
Issuance of common stock as compensation (in shares) | 66,200 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (72) |  |  | (72)
Shares exchanged for taxes on stock-based compensation (in shares) | (10,880) |  |  |  |
Balance at end of period at Dec. 31, 2016 | $ 217 | 142,998 | 29,265 | (1,596) | $ 170,884
Balance at end of period (in shares) at Dec. 31, 2016 | 21,704,851 |  |  |  | 21,656,406
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Impact of adopting ASU 2016-09 |  | 20 | (20) |  |
Net loss |  |  | (31,266) |  | $ (31,266)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | 1,091 |
Income tax benefit (expense) |  |  |  | (275) |
Other comprehensive gain (loss) |  |  |  | 816 | 816
Issuance of common stock under stock compensation plans | $ 1 | (1) |  |  |
Issuance of common stock under stock compensation plans (in shares) | 92,448 |  |  |  |
Stock-based compensation expense |  | 656 |  |  | 656
Issuance of common stock as compensation |  | 320 |  |  | 320
Issuance of common stock as compensation (in shares) | 67,498 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (158) |  |  | (158)
Shares exchanged for taxes on stock-based compensation (in shares) | (28,180) |  |  |  |
Balance at end of period at Dec. 31, 2017 | $ 218 | $ 143,835 | $ (2,021) | $ (780) | $ 141,252
Balance at end of period (in shares) at Dec. 31, 2017 | 21,836,617 |  |  |  | 21,788,172

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